42C,D,S,V Series
Fan Coil Air Conditioners
Installation, Start-Up and Service
Instructions
CONTENTS
SAFETY CONSIDERATIONS
Page
Installation of this unit can be hazardous due to electrical com-
ponents and equipment location (such as a ceiling or elevated
structure). Only trained, qualified installers and service
mechanics should install and service this equipment.
When installing this unit, observe precautions in the literature,
labels attached to the equipment, and any other safety precau-
tions that apply.
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
PRE-INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39
Unpack and Inspect Units . . . . . . . . . . . . . . . . . . . . . . . . 3
Protect Units From Damage . . . . . . . . . . . . . . . . . . . . . . 3
Prepare Jobsite for Unit Installation. . . . . . . . . . . . . . 3
Identify and Prepare Units. . . . . . . . . . . . . . . . . . . . . . . . 3
•
•
•
Follow all safety codes.
Wear safety glasses and work gloves.
Use care in handling and installing this accessory.
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-67
Step 1 — Place Units in Position . . . . . . . . . . . . . . . . 40
• 42C UNITS
WARNING
• 42V UNITS
ELECTRIC SHOCK HAZARD To avoid the possibility of
electrical shock, open and tag all service switches before
installing this equipment.
• 42D UNITS
• 42S UNITS
Step 2 — Make Piping Connections . . . . . . . . . . . . . 42
• VALVE PACKAGES
• 42C,D,V DRAIN CONNECTIONS
• 42C,D,V WATER SUPPLY/RETURN
CONNECTIONS
INTRODUCTION
This document contains general installation instructions for
the 42C,D,S,V unit fan coils. Refer to the unit-wiring diagram
installed on the blower housing or specific manufacturer litera-
ture for any other type of factory-mounted controls.
• 42C,D,V STEAM CONNECTIONS
• 42C,D,V DIRECT EXPANSION (DX) REFRIGERANT
PIPING
See drawings for unit configurations, dimensions, clearances,
and pipe connections. Refer to unit wiring label for all electrical
connections; follow NEC (National Electrical Code) and local
codes.
• TEST AND INSULATE
Step 3 — Make Electrical Connections . . . . . . . . . . 55
• STANDARD WIRING PACKAGES
Step 4 — Make Duct Connections . . . . . . . . . . . . . . . 66
Step 5 — Frame and Finish Unit. . . . . . . . . . . . . . . . . 66
Step 6 — Cut out Openings for Grilles and
Thermostats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Step 7 — Make Final Preparations. . . . . . . . . . . . . . . 67
PHYSICAL DATA
Component weight data, shipping weights, and filter data of
the 42C,D,S,V units are provided in Tables 1-4.
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67,68
Excessive Condensation on Unit. . . . . . . . . . . . . . . . 67
To Clean Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Coil Air Vent (Manual or Automatic) . . . . . . . . . . . . . 67
Check Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Fan Motor Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Clean Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Clean Electric Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Clean or Replace Air Filters . . . . . . . . . . . . . . . . . . . . . 68
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
START-UP CHECKLIST FOR 42C,D,S,V SERIES
FAN COIL AIR CONDITIONERS. . . . . . . . CL-1, CL-2
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53420004-01 Printed in U.S.A. Form 42-3SI Pg 1 12-09 Replaces: 42-2SI
Download from Www.Somanuals.com. All Manuals Search And Download.
Table 3 — Physical Data — 42D Series Units
UNIT SIZE 42D
06
08
10
12
14
16
18
20
NOMINAL AIRFLOW (cfm)
600
800
1000
1200
1400
1600
1800
2000
SHIPPING WEIGHT (lb)*
42DA
42DC
42DD
42DE
42DF
64
94
150
135
157
79
107
163
155
167
93
150
176
165
177
110
169
195
184
199
119
174
220
199
215
129
178
235
215
229
137
195
240
232
249
155
220
247
243
258
COIL WATER WEIGHT
(Approx lb per row of coil)
1.3
1.6
1.9
2.3
2.7
3.0
3.4
3.7
COILS
FPI
10 fins/inch
Coil Face Area (sq ft)
MOTOR (qty)
1.6
1
2.1
1
2.5
1
3.0
2
3.5
2
4.1
2
4.6
2
5.0
2
BLOWER (qty)
1
1
1
2
2
2
2
2
FILTERS
Nominal Size (in.) (1-in. thick)
42DA
NA
42DC
42DD
14 x 21
3
14 x 26
3
14 x 30
3
14 x 35
3
14 x 40
3
14 x 45
3
14 x 50
3
14 x 54
3
(Front Return)
(Bottom Return)
42DE
12 / x 21
12 / x 26
12 / x 30
12 / x 35
12 / x 40
12 / x 45
12 / x 50
12 / x 54
4
4
4
4
4
4
4
4
3
3
3
3
3
3
3
3
12 / x 21
12 / x 25
12 / x 29
12 / x 34
12 / x 39
12 / x 44
12 / x 49
12 / x 53
4
4
4
4
4
4
4
4
3
3
3
3
3
3
3
3
14 x 14 /
14 x 14
14 x 19 /
14 x 20
14 x 23 /
14 x 24
14 x 28 /
14 x 28
14 x 33 /
14 x 34
14 x 38 /
14 x 38
14 x 43 /
14 x 44
14 x 47 /
14 x 48
4
4
4
4
4
4
4
4
42DF
Qty
1
SUPPLY DUCT COLLAR
1-in.
PIPING CONNECTIONS
(Sweat - 4-Row)
Inlet (in. OD)
5
5
7
7
1
/
/
/
8
/
8
1 /
8
8
8
8
1
Outlet (in. OD)
1 /
*Calculate Operating Weight of unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.
Table 4 — Physical Data — 42S Series Units
UNIT SIZE 42S
03
04
06
08
10
12
NOMINAL AIRFLOW (cfm)
300
400
600
800
1000
1200
SHIPPING WEIGHT (lb)*
42SG,SU
42SH
180
202
360
225
247
450
240
262
480
260
286
520
280
311
560
305
336
610
42SJ
COIL WATER WEIGHT
(Approx lb per row of coil)
1.6
1.6
2.3
2.3
3.1
3.1
COILS
FPI
14 fins/inch
MOTOR (qty)
42SG,SH,SU
42SJ
1
2
1
2
1
2
1
2
1
2
1
2
BLOWER (qty)
42SG,SH,SU
42SJ
1
2
1
2
1
2
1
2
1
2
1
2
FILTERS
Nominal Size (in.) (1-in. thick)
Qty
1
1
1
3
1
1
12 / x 24 /
16 / x 26 /
4
20 / x 29 /
2
4
4
2
4
1†
PIPING CONNECTIONS
Inlet (in. OD)
1
/
2
*Calculate Operating Weight of Unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.
†42SJ units require two filters.
material is allowed to be deposited on the motor or blower
wheels of any unit.
PRE-INSTALLATION
Unpack and Inspect Units — Remove shipping wraps
from all units. Check the shipment against shipping order.
Make sure that furnished only items, such as thermostat,
grilles, etc., are accounted for, whether packaged separately or
shipped at a later date. If shipment is damaged or incomplete,
file claim with transportation company and advise Carrier im-
mediately.
Prepare Jobsite for Unit Installation — To save
time and to reduce the possibility of costly errors, set up a com-
plete sample installation in a typical room at jobsite. Check all
critical dimensions such as pipe, wire, and duct connection
requirements. Refer to job drawings and product dimension
drawings as required (see Fig. 1-36). Instruct all trades in their
part of the installation.
Protect Units from Damage — The equipment must
always be properly supported. Temporary supports used during
installation or service must be adequate to hold the equipment
securely. Equipment should always be stored in the proper ori-
entation as marked on the carton. To maintain warranty, protect
units against adverse weather, theft, vandalism, and debris on
jobsite. Equipment covered in this manual is not suitable for
outdoor installations. Do not allow foreign material to fall into
drain pan. Prevent dust and debris from being deposited on mo-
tor and fan wheels. Manufacturer's warranty is void if foreign
Identify and Prepare Units — Be sure power require-
ments match available power source. Refer to unit nameplate
and wiring diagram.
1. Check all tags on unit to determine if shipping screws are
to be removed. Remove screws as directed.
2. Rotate the fan wheel by hand to ensure that the fan is
unrestricted and can rotate freely. Check for shipping
damage and fan obstructions.
3
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Junction Box (remote mount)
2 — Flexible Metal Conduit
locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04
through 08 have one motor, 2 blowers; sizes 10 and 12 have
2 motors, 4 blowers.
3 — Drain Conn, 7/8-in. OD
4 — Tell-Tale Drain Conn, 5/8-in. OD (optional)
5 — Drip Lip (optional)
3. Standard 3-row coil shown.
6 — Hanger Slots (4), Rubber Grommet
4. Overall unit dimension increases by 4 in. with optional electric
heat.
has 3/8-in. Diameter Hole
7 — Supply Duct Collar, 1-in.
8 — Air Vent, 1/8-in. MPT
5. Not shown: 3-speed fan switch; wall plate, closed cell foam on
main drain pan.
9 — Return Conn, 5/8-in. OD
10— Supply Conn, 5/8-in. OD
6. Units have galvanized finish.
7. For optional coil connections, view 42CA-203-1 using the Fan Coil
Builder.
a42-4099.eps
8. Dimensions shown in inches (mm).
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
Blower Motor
FACE
AREA
(sq ft)
UNIT
WEIGHT*
(lb)
UNIT
SIZE
A
A’
B
D’
E
F
G
H
02
03
04
06
08
10
12
200
300
400
600
800
1000
1200
211/4
251/4
311/4
361/4
431/4
571/4
651/4
311/4
361/4
431/4
431/4
571/4
651/4
751/4
16
20
26
31
38
52
60
13
14
15
10
17
11
13
181/4
221/4
281/4
331/4
401/4
541/4
621/4
61/4
61/4
61/4
71/2
71/2
71/2
71/2
83/4
83/4
83/4
10
10
10
193/4
233/4
293/4
343/4
413/4
553/4
633/4
1
1
2
2
2
4
4
1
1
1
1
1
2
2
0.83
1.08
1.35
1.88
2.31
3.16
3.65
36
39
49
59
64
95
107
10
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 1 — 42CA Furred-In Horizontal Unit Dimensions
4
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Junction Box (remote mount)
2 — Flexible Metal Conduit
locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04
through 08 have one motor, 2 blowers; sizes 10 and 12 have
2 motors, 4 blowers.
3 — Strip Heater High Limit
4 — Electric Strip Heater Element
5 — Tell-Tale Drain Conn, 5/8-in. OD (optional)
6 — Drain Conn, 7/8-in. OD
3. Standard 3-row coil shown.
4. Overall unit dimension increases by 4 in. with optional electric
heat.
7 — Drip Lip (optional)
8 — Supply Duct Collar, 1-in.
5. Not shown: 3-speed fan switch; wall plate, closed cell foam on
main drain pan.
9 — Air Vent, 1/8-in. MPT
10— Return Conn, 5/8-in. OD
11— Supply Conn, 5/8-in. OD
12— Hanger Slots (4), Rubber Grommet
has 3/8-in. Diameter Hole
6. Units have galvanized finish.
7. For optional coil connections, view 42CA-203-1 using the Fan Coil
Builder.
a42-4100.eps
8. Dimensions shown in inches (mm).
DIMENSIONS (in.) QTY/UNIT
NOM
AIRFLOW
(Cfm)
FACE
AREA
(sq ft)
UNIT
WEIGHT*
(lb)
UNIT
SIZE
Blower
Motor
A
A’
B
D’
E
F
G
H
02
03
04
06
08
10
12
200
300
400
600
800
1000
1200
211/4
251/4
311/4
361/4
431/4
571/4
651/4
311/4
361/4
431/4
431/4
571/4
651/4
751/4
16
20
26
31
38
52
60
13
14
15
10
17
11
13
181/4
221/4
281/4
331/4
401/4
541/4
621/4
61/4
61/4
61/4
71/2
71/2
71/2
71/2
83/4
83/4
83/4
10
10
10
193/4
233/4
293/4
343/4
413/4
553/4
633/4
1
1
2
2
2
4
4
1
1
1
1
1
2
2
0.83
1.08
1.35
1.88
2.31
3.16
3.65
38
41
51
61
66
97
109
10
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 2 — 42CA Furred-In Horizontal Unit with Electric Heat Dimensions
5
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit with standard 3-row coil shown; left hand unit opposite. Coil
1 — Junction Box, 4 in. x 4 in.
2 — Flexible Metal Conduit
3 — Mounting Bracket
connection locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have
one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.
3. Standard 3-row coil shown.
4 — Drain Conn, 7/8-in. OD
5 — Tell-Tale Drain Conn, 5/8-in. OD (optional)
6 — Drip Lip (optional, shipped loose)
7 — Filter
4. Unit available with bottom or rear return air.
5. Dimension increases by 4 in. with optional electric heat.
6. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass insulation on
inside of plenum, closed cell foam on main drain pan.
7. Units have galvanized finish.
8 — Return Duct Collar, 1-in.
9 — Filter Access Panel
10 — Access Panel
11 — Supply Duct Collar, 1-in.
12 — Air Vent, 1/8-in. MPT
13 — Return Conn, 5/8-in. OD
14 — Supply Conn, 5/8-in. OD
15 — Hanger Slots (4), Rubber Grommet has
3/8-in. Diameter Hole
8. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.
9. Dimensions shown in inches (mm).
a42-4101
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
FACE
UNIT
UNIT
SIZE
AREA WEIGHT*
Blower Motor
A
A’
B
C
D’
E
F
G
H
(sq ft)
(lb)
55
60
70
82
95
135
154
02
03
04
06
08
10
12
211/4
251/4
311/4
361/4
431/4
571/4
651/4
311/4
361/4
431/4
431/4
571/4
651/4
751/4
16
20
26
31
38
52
60
181/4
221/4
281/4
331/4
401/4
541/4
621/4
13
14
15
10
17
11
13
193/4
233/4
293/4
343/4
413/4
553/4
633/4
61/4
61/4
61/4
71/2
71/2
71/2
71/2
83/4
83/4
83/4
10
10
10
153/8
193/8
253/8
303/8
373/8
513/8
593/8
1
1
2
2
2
4
4
1
1
1
1
1
2
2
0.83
1.08
1.35
1.88
2.31
3.16
3.65
10
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 3 — 42CE Furred-In Horizontal Unit with Plenum Dimensions
6
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit with standard 3-row coil shown; left hand unit opposite. Coil
1 — Junction Box, 4 in. x 4 in.
2 — Flexible Metal Conduit
3 — Mounting Bracket
connection locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have
one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.
3. Standard 3-row coil shown.
4 — Electric Strip Heater Element
5 — Drain Conn, 7/8-in. OD
6 — Strip Heater High Limit
7 — Tell-Tale Drain Conn, 5/8-in. OD (optional)
8 — Drip Lip (optional, shipped loose)
9 — Filter
4. Unit available with bottom or rear return air.
5. Dimension increases by 4 in. with optional electric heat.
6. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass insulation on
inside of plenum, closed cell foam on main drain pan.
7. Units have galvanized finish.
10 — Return Duct Collar, 1-in.
11 — Filter Access Panel
12 — Access Panel
8. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.
9. Dimensions shown in inches (mm).
13 — Supply Duct Collar, 1-in.
14 — Air Vent, 1/8-in. MPT
15 — Return Conn, 5/8-in. OD
16 — Supply Conn, 5/8-in. OD
17 — Hanger Slots (4), Rubber Grommet has
3/8-in. Diameter Hole
A42-4102
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
FACE
UNIT
UNIT
SIZE
AREA WEIGHT*
Blower Motor
A
A’
B
C
D’
E
F
G
H
(sq ft)
(lb)
57
62
72
84
97
137
156
02
03
04
06
08
10
12
211/4
251/4
311/4
361/4
431/4
571/4
651/4
311/4
361/4
431/4
431/4
571/4
651/4
751/4
16
20
26
31
38
52
60
181/4
221/4
281/4
331/4
401/4
541/4
621/4
13
14
15
10
17
11
13
193/4
233/4
293/4
343/4
413/4
553/4
633/4
61/4
61/4
61/4
71/2
71/2
71/2
71/2
83/4
83/4
83/4
10
10
10
153/8
193/8
253/8
303/8
373/8
513/8
593/8
1
1
2
2
2
4
4
1
1
1
1
1
2
2
0.83
1.08
1.35
1.88
2.31
3.16
3.65
10
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 4 — 42CE Furred-In Horizontal Unit with Plenum and Electric Heat Dimensions
7
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Junction Box, Installed with Plenum
2 — Flexible Metal Conduit
3 — Insulated Plenum
locations are 5/8-in.
2. Unit sizes 04 thru 08 have one motor, 2 blowers; size 10 has
2 motors, 4 blowers.
3. Refer to above figure for configuration of filter and track if
installed in optional plenum.
4 — Mounting Bracket
5 — Drain Conn, 7/8-in. OD
6 — Tell-Tale Drain Conn, 5/8-in. OD (optional)
7 — Drip Lip (optional, shipped loose)
8 — Filter
4. Dimension increases by 4 in. with optional electric heat.
5. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass
insulation on inside of plenum (when installed), closed cell
insulation on main drain pan.
9 — Return Duct Collar, 1-in.
10 — Access Panel
6. Units have galvanized finish.
11 — Supply Duct Collar, 1-in.
12 — Supply Conn, 5/8-in. OD
13 — Air Vent, 1/8-in. MPT
7. For optional coil connections, view 42CA-203-1 using the Fan
Coil Builder.
8. Dimensions shown in inches (mm).
14 — Return Conn, 5/8-in. OD
15 — Hanger Slots (4), Rubber Grommet has
3/8-in. Diameter Hole
A42-4103
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
FACE
UNIT
UNIT
SIZE
AREA WEIGHT*
Blower Motor
A
A’
B
C
D’
E
F
G
H
(sq ft)
(lb)
04
06
08
10
400
600
800
311/4
361/4
431/4
571/4
431/4
431/4
571/4
651/4
26
34
38
52
281/4
331/4
401/4
541/4
15
10
17
11
293/4
343/4
413/4
553/4
61/4
71/2
71/2
71/2
83/4
10
10
301/4
351/4
421/4
561/4
2
2
2
4
1
1
1
2
1.35
1.88
2.31
3.16
84
97
110
163
1000
10
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 5 — 42CF Furred-In High-Static Horizontal Unit with Plenum Dimensions
8
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Junction Box, Installed with Plenum
2 — Plenum
locations are 5/8-in.
2. Unit sizes 04 thru 08 have one motor, 2 blowers; size 10 has
2 motors, 4 blowers.
3. Refer to above figure for configuration of filter and track if
installed in optional plenum.
3 — Flexible Metal Conduit
4 — Mounting Bracket
5 — Electric Strip Heater Element
6 — Drain Conn, 7/8-in. OD
7 — Drip Lip (optional, shipped loose)
8 — Tell-Tale Drain Conn, 5/8-in. OD (optional)
9 — Filter
4. Dimension increases by 4 in. with optional electric heat.
5. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass
insulation on inside of plenum (when installed), closed cell
insulation on main drain pan.
10 — Return Duct Collar, 1-in.
11 — Air Vent, 1/8-in. MPT
12 — Access Panel
6. Units have galvanized finish.
7. For optional coil connections, view 42CA-203-1 using the Fan
Coil Builder.
13 — Return Conn, 5/8-in. OD
14 — Supply Conn, 5/8-in. OD
15 — Supply Duct Collar, 1-in.
16 — Hanger Slots (4), Rubber Grommet has
3/8-in. Diameter Hole
8. Dimensions shown in inches (mm).
A42-4104
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
FACE
UNIT
UNIT
SIZE
AREA WEIGHT*
Blower Motor
A
A’
B
C
D’
E
F
G
H
(sq ft)
(lb)
04
06
08
10
400
600
800
311/4
361/4
431/4
571/4
431/4
431/4
571/4
651/4
26
34
38
52
281/4
331/4
401/4
541/4
15
10
17
11
293/4
343/4
413/4
553/4
61/4
71/2
71/2
71/2
83/4
10
10
301/4
351/4
421/4
561/4
2
2
2
4
1
1
1
2
1.35
1.88
2.31
3.16
84
97
110
163
1000
10
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 6 — 42CF Furred-In Horizontal Unit with Plenum and Electric Heat Dimensions
9
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection locations
1 — Junction Box, 4 in. x 4 in.
are 5/8-in.
2 — Optional Return Air Location
3 — Optional Drip Lip, shipped loose
4 — Mounting Holes (4), Rubber Grommets
have 3/8-in. Diameter Hole
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08
have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.
3. Cabinet has an Arctic White baked finish.
4. Refer to supply and return connections above for coil stub-out locations.
5. Not shown: optional drip lip, 3-speed fan switch; wall plate, 1/2-in. fiber-
glass insulation on inside of casing, closed cell foam on main drain pan.
6. For optional coil connections, view 42CA-203-1 using the Fan Coil
Builder.
5 — Electrical KO, 7/8-in. Diameter
6 — Return KO, 1-in. Diameter
7 — Supply KO, 11/2-in. Diameter
8 — Drain KO, 11/2-in. Diameter
9 — Supply, Return Connections, 5/8-in. OD
10 — Drain Connection, 7/8-in. OD
11 — Optional Valve Package (inside cabinet)
12 — Filter
7. Valve package is factory-installed inside the cabinet when ordered with
the unit (based on component size).
8. Dimensions shown in inches (mm).
13 — Standard Stamped-Return Air Grille
14 — Removable Hinged Access Panel
15 — Supply Grille, Stamped, Standard
A42-4105
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
FACE
AREA
(sq ft)
0.83
1.08
1.35
1.88
2.31
3.16
3.65
UNIT
WEIGHT*
(lb)
UNIT
SIZE
Blower
Motor
A
B
C
E
F
G
02
03
04
06
08
10
12
38
42
48
53
60
74
82
171/8
211/2
257/8
345/8
39
107/16
101/4
111/16
93/16
34
38
44
49
56
70
78
53/4
53/4
53/4
63/4
63/4
63/4
63/4
11
11
11
12
12
12
12
1
1
2
2
2
4
4
1
1
1
1
1
2
2
98
118
126
168
176
215
245
101/2
521/8
607/8
1015
/
16
109/16
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 7 — 42CG Horizontal Cabinet Unit Dimensions
10
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Junction Box, 4 in. x 4 in.
locations are 5/8-in.
2 — Optional Stamped Rear Return Grille
3 — Optional Drip Lip, shipped loose
4 — Electric Strip Heater Element
5 — Mounting Holes (4), Rubber Grommets
have 3/8-in. Diameter Hole
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04
through 08 have one motor, 2 blowers; sizes 10 and 12 have
2 motors, 4 blowers.
3. Cabinet has an Arctic White baked finish.
4. Refer to supply and return connections above for coil stub-out
locations.
6 — Electrical KO, 7/8-in. Diameter
7 — Return KO, 1-in. Diameter
5. Not shown: optional drip lip, 3-speed fan switch; wall plate,
1/2-in. fiberglass insulation on inside of casing, closed cell foam
on main drain pan.
8 — Supply KO, 11/2-in. Diameter
9 — Drain KO, 11/2-in. Diameter
10 — Drain Connection, 7/8-in. OD
11 — Optional Valve Package (inside cabinet)
12 — Filter
6. For optional coil connections, view 42CA-203-1 using the Fan
Coil Builder.
7. Valve package is factory-installed inside the cabinet when
ordered with the unit (based on component size).
13 — Standard Stamped-Return Air Grille
14 — Removable Hinged Access Panel
15 — Supply, Return Connections, 5/8-in. OD
16 — Supply Grille, Stamped, Standard
8. Dimensions shown in inches (mm).
A42-4106
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
FACE
AREA
(sq ft)
0.83
1.08
1.35
1.88
2.31
3.16
3.65
UNIT
WEIGHT*
(lb)
UNIT
SIZE
Blower
Motor
A
B
C
E
F
G
02
03
04
06
08
10
12
38
42
48
53
60
74
82
171/8
211/2
257/8
345/8
39
107/16
101/4
111/16
93/16
34
38
44
49
56
70
78
53/4
53/4
53/4
63/4
63/4
63/4
63/4
11
11
11
12
12
12
12
1
1
2
2
2
4
4
1
1
1
1
1
2
2
98
118
126
168
176
215
245
101/2
521/8
607/8
1015
/
16
109/16
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 8 — 42CG Horizontal Cabinet with Electric Heat Dimensions
11
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
1. Right hand unit shown; left hand unit opposite.
2. Internal factory valve package and drains may not align with
cabinet knockouts.
A42-4149
3. Dimensions shown in inches (mm). All dimensions are 1/4 in.
4. Bottom panel is Arctic White polyester powder coat paint.
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
Blower Motor
UNIT
SIZE
BOTTOM RETURN
FILTER SIZE, (in.)
A
B
C
D
E
F
02
03
04
06
08
10
12
35
35
41
53
53
75
75
16
20
26
31
38
52
60
123/4
83/4
37
37
43
55
55
77
77
32
32
38
50
50
72
72
6
6
6
7
7
7
7
1
1
2
2
2
4
4
1
1
1
1
1
2
2
10 x 28
10 x 28
10 x 33
10 x 45
10 x 45
10 x 62
10 x 62
83/4
153/4
83/4
163/4
83/4
Fig. 9 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,
Front Supply, and Bottom Return Dimensions
12
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
1. Right hand unit shown; left hand unit opposite.
2. Internal factory valve package and drains may not align with
cabinet knockouts.
a42-4150
3. Dimensions shown in inches (mm). All dimensions are 1/4 in.
4. Bottom panel is Arctic White polyester powder coat paint.
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
Blower Motor
UNIT
SIZE
BOTTOM RETURN
FILTER SIZE, (in.)
A
B
C
D
E
F
02
03
04
06
08
10
12
35
35
41
53
53
75
75
16
20
26
31
38
52
60
123/4
83/4
37
37
43
55
55
77
77
32
32
38
50
50
72
72
6
6
6
7
7
7
7
1
1
2
2
2
4
4
1
1
1
1
1
2
2
10 x 28
10 x 28
10 x 33
10 x 45
10 x 45
10 x 62
10 x 62
83/4
153/4
83/4
163/4
83/4
Fig. 10 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,
Front Supply, Bottom Return, and Heater Dimensions
13
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
1. Right hand unit shown; left hand unit opposite.
2. Internal factory valve package and drains may not align with
cabinet knockouts.
a42-4151
3. Dimensions shown in inches (mm). All dimensions are 1/4 in.
4. Bottom panel is Arctic White polyester powder coat paint.
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
Blower Motor
UNIT
SIZE
REAR RETURN
FILTER SIZE, (in.)
A
B
C
D
E
F
02
03
04
06
08
10
12
35
35
41
43
43
75
75
16
20
26
31
38
52
60
123/4
83/4
37
37
43
55
55
77
77
32
32
38
50
50
72
72
6
6
6
7
7
7
7
1
1
2
2
2
4
4
1
1
1
1
1
2
2
7 x 21
7 x 21
7 x 27
7 x 38
7 x 38
7 x 52
7 x 52
83/4
153/4
83/4
163/4
83/4
Fig. 11 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,
Front Supply, and Rear Return Dimensions
14
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
1. Right hand unit shown; left hand unit opposite.
2. Internal factory valve package and drains may not align with
cabinet knockouts.
a42-4152
3. Dimensions shown in inches (mm). All dimensions are 1/4 in.
4. Bottom panel is Arctic White polyester powder coat paint.
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
UNIT
SIZE
REAR RETURN
FILTER SIZE, (in.)
A
B
C
D
E
F
Blower
Motor
02
03
04
06
08
10
12
35
35
41
43
43
75
75
16
20
26
31
38
52
60
123/4
83/4
37
37
43
55
55
77
77
32
32
38
50
50
72
72
6
6
6
7
7
7
7
1
1
2
2
2
4
4
1
1
1
1
1
2
2
7 x 21
7 x 21
7 x 27
7 x 38
7 x 38
7 x 52
7 x 52
83/4
153/4
83/4
163/4
83/4
Fig. 12 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,
Front Supply, Rear Return, and Heater Dimensions
15
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Junction Box, 4 in. x 4 in.
2 — Optional Drip Lip, shipped loose
3 — Mounting Holes (4), Rubber Grommets
have 3/8-in. Diameter Hole
locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04
through 08 have one motor, 2 blowers; sizes 10 and 12 have
2 motors, 4 blowers.
3. Bottom access panel has an Arctic White baked finish.
4. Refer to supply and return connections above for coil stub-out
locations.
5. Not shown: optional drip lip, 3-speed fan switch; wall plate,
1/2-in. fiberglass insulation on inside of casing, closed cell foam
on main drain pan.
6. For optional coil connections, view 42CA-203-1 using the Fan
Coil Builder.
4 — Piping KO, 11/2-in. Diameter
5 — Electrical KO, 7/8-in. Diameter
6 — Drain KO, 11/2-in. Diameter
7 — Supply Duct Collar
8 — Return Connection, 5/8-in. OD.
9 — Optional Rear Return. Consult factory for
collar dimensions.
10 — Drain, 7/8-in. OD.
11 — Stamped Bottom Return Air Grille
12 — Filter
7. Valve package is factory-installed inside the cabinet when
ordered with the unit (based on component size).
8. Bottom return or bottom supply is an ETO (engineering to order)
request.
13 — Stamped Air Supply Grille
14 — Hinged Bottom Access Panel
15 — Supply Connection, 5/8-in. OD.
A42-4107
9. Dimensions shown in inches (mm).
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
UNIT
SIZE
FACE AREA
UNITWEIGHT*
(lb)
Blower
Motor
(sq ft)
A
D
E
02
03
04
06
08
10
12
200
300
400
600
800
1000
1200
35
35
41
53
53
75
75
37
37
43
55
55
77
77
32
32
38
50
50
72
72
1
1
2
2
2
4
4
1
1
1
1
1
2
2
0.83
1.08
1.35
1.88
2.31
3.16
3.65
115
120
135
150
155
227
241
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 13 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel
16
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
1 — Junction Box, 4 in. x 4 in.
2 — Strip Heater High Limit
NOTES:
1. Right hand unit shown; left hand unit opposite. Coil connection
locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04
through 08 have one motor, 2 blowers; sizes 10 and 12 have
2 motors, 4 blowers.
3. Bottom access panel has an Arctic White baked finish.
4. Refer to supply and return connections above for coil stub-out
locations.
5. Not shown: optional drip lip, 3-speed fan switch; wall plate,
1/2-in. fiberglass insulation on inside of casing, closed cell foam
on main drain pan.
6. For optional coil connections, view 42CA-203-1 using the Fan
Coil Builder.
3 — Electric Strip Heater Element
4 — Optional Drip Lip, shipped loose
5 — Mounting Holes (4), Rubber Grommets
have 3/8-in. Diameter Hole
6 — Piping KO, 11/2-in. Diameter
7 — Electrical KO, 7/8-in. Diameter
8 — Drain KO, 11/2-in. Diameter
9 — Supply Duct Collar
10 — Optional Rear Return. Consult factory for
collar dimensions.
11 — Drain, 7/8-in. OD.
7. Valve package is factory-installed inside the cabinet when
ordered with the unit (based on component size).
8. Bottom return or bottom supply is an ETO (engineering to order)
request.
12 — Stamped Bottom Return Air Grille
13 — Filter
14 — Stamped Air Supply Grille
15 — Hinged Bottom Access Panel
16 — Supply Connection, 5/8-in. OD.
17 — Return Connection, 5/8-in. OD.
9. Dimensions shown in inches (mm).
A42-4108
DIMENSIONS (in.)
QTY/UNIT
NOM AIRFLOW
(Cfm)
FACE AREA
(sq ft)
UNITWEIGHT*
(lb)
UNIT SIZE
A
D
E
Blower
Motor
02
03
04
06
08
10
12
200
300
400
600
800
1000
1200
35
35
41
53
53
75
75
37
37
43
55
55
77
77
32
32
38
50
50
72
72
1
1
2
2
2
4
4
1
1
1
1
1
2
2
0.83
1.08
1.35
1.88
2.31
3.16
3.65
117
122
137
152
157
229
243
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 14 — 42CK Horizontal Cabinet with Telescopic Access Panel and Electric Heat Dimensions
17
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit shown; left hand unit opposite. Coil connection locations
1 — Optional Unit Mounted Control Box
2 — Wall Mounting Holes (4), 3/4-in. Diameter
3 — Drain, 3/4-in. MPT
are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08
have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.
3. Standard 3-row coil shown.
4 — Drain Pan, Auxiliary, Shipped Loose
5 — Supply Conn, 5/8-in. OD
6 — Return Conn, 5/8-in. OD
7 — Filter
4. Optional unit-mounted switch box and controls, when specified, are
installed on opposite side from cooling connections.
5. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass insulation on
inside of casing, closed cell foam on main drain pan.
6. Units have galvanized finish.
7. For optional coil connections, view 42VA-203-1 using the Fan Coil
Builder.
8. Dimensions shown in inches (mm).
8 — Air Vent, 1/8-in. MPT
9 — Discharge Opening
10 — Flexible Conduit
11 — Front Access Panel
A42-4109
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
FACE
AREA
(sq ft)
0.83
1.08
1.35
1.88
2.31
3.16
3.65
UNIT
WEIGHT*
(lb)
UNIT
SIZE
Blower
Motor
A
B
C
D
02
03
04
06
08
10
12
25
29
35
45
47
61
69
22
26
32
42
44
58
66
231/2
271/2
331/2
431/2
451/2
591/2
671/2
16
20
26
36
38
52
60
1
1
2
2
2
4
4
1
1
1
1
1
2
2
65
80
90
112
115
140
170
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 15 — 42VA Furred-In Vertical Unit Dimensions
18
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Standard Stamped Supply Grille
2 — Access Door, Fan Switch
3 — Supply Conn, 5/8-in. OD
4 — Return Conn, 5/8-in. OD
5 — Drain, 3/4-in. MPT
locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through
08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors,
4 blowers.
3. Standard 3-row coil shown.
6 — Filter
4. Cabinet has an Arctic White baked finish.
5. Stamped supply grille standard. Optional single or double deflec-
tion grilles available.
7 — Air Vent, 1/8-in. MPT
8 — Front Panel Fastener
9 — Drain Pan, Auxiliary, Shipped Loose
10 — Wall Mounting Holes (4), 3/4-in. Diameter
11 — Flexible Conduit
6. Not shown: 1/2-in. fiberglass insulation on inside of casing, closed
cell foam on main drain pan.
7. For optional coil connections, view 42VA-203-1 using the Fan Coil
Builder.
12 — Fan Switch, 3-speed
13 — Front Access Panel
A42-4110
8. Dimensions shown in inches (mm).
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
FACE
UNIT
WEIGHT*
(lb)
UNIT
SIZE
AREA
(sq ft)
Blower
Motor
A
B
C
D
E
02
03
04
06
08
10
12
41
45
51
61
63
77
85
22
26
32
42
44
58
66
231/2
271/2
331/2
431/2
451/2
591/2
671/2
171/4
211/2
26
39
39
35/8
31/2
41/4
23/4
33/4
41/4
33/4
1
1
2
2
2
4
4
1
1
1
1
1
2
2
0.83
1.08
1.35
1.88
2.31
3.16
3.65
89
95
116
134
137
169
192
52
61
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 16 — 42VB Vertical Cabinet Unit Dimensions
19
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Standard Stamped Supply Grille
2 — Access Door, Fan Switch
3 — Supply Conn, 5/8-in. OD
4 — Return Conn, 5/8-in. OD
5 — Drain, 3/4-in. MPT
locations are 5/8-in.
2. Unit sizes 02 and 03 have one motor, one blower; sizes 04
through 08 have one motor, 2 blowers; sizes 10 and 12 have
2 motors, 4 blowers.
3. Standard 3-row coil shown.
6 — Filter
4. Cabinet has an Arctic White baked finish.
5. Not shown: 1/2-in. fiberglass insulation on inside of casing,
closed cell foam on main drain pan.
7 — Air Vent, 1/8-in. MPT
8 — Front Panel Fastener
9 — Optional Valve Package (inside cabinet)
10 — Drain Pan, Auxiliary, Shipped Loose
11 — Wall Mounting Holes 3/4-in. Diameter
12 — Flexible Conduit
6. For optional coil connections, view 42VA-203-1 using the Fan
Coil Builder.
7. Valve package is factory-installed inside the cabinet when
ordered with the unit (based on component size).
13 — Fan Switch, 3 speed
14 — Access Doors
A42-4111
8. Dimensions shown in inches (mm).
NOM
AIRFLOW
(Cfm)
200
300
400
600
800
1000
1200
DIMENSIONS (in.)
QTY/UNIT
FACE
AREA
(sq ft)
0.83
1.08
1.35
1.88
2.31
3.16
3.65
UNIT
WEIGHT*
(lb)
UNIT
SIZE
Blower
Motor
A
B
C
D
E
02
03
04
06
08
10
12
41
45
51
61
63
77
85
22
26
32
42
44
58
66
231/2
271/2
331/2
431/2
451/2
591/2
671/2
171/4
211/2
26
35/8
31/2
41/4
23/4
33/4
41/4
33/4
1
1
2
2
2
4
4
1
1
1
1
1
2
2
92
98
122
141
144
178
205
39
39
521/8
61
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 17 — 42VF Vertical Cabinet Unit with Slant Top Dimensions
20
Download from Www.Somanuals.com. All Manuals Search And Download.
14-3/8
(368)
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Optional Unit Mounted Control Box
2 — Drain Pan, Auxiliary, Shipped Loose
3 — Supply Conn, 5/8-in. OD
4 — Drain, 3/4-in. MPT
locations are 5/8-in.
2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06
has 2 motors, 4 blowers.
3. Standard 2-row coil shown.
5 — Return Conn, 5/8-in. OD
6 — Air Vent, 1/8-in. MPT
7 — Discharge Opening
4. Optional unit-mounted switch box and controls, when specified,
are installed on opposite side from cooling connections.
5. Height increases by 2 in. with electric heat.
6. Not shown: 3-speed fan switch, 1/2-in. fiberglass insulation on
inside of casing, closed cell foam on main drain pan.
7. Units have galvanized finish.
8 — Filter
8. For optional coil connections, view 42VC-203-1 using the Fan
Coil Builder.
A42-4112
9. Dimensions shown in inches (mm).
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
B
QTY/UNIT
FACE AREA
(sq ft)
UNIT
WEIGHT* (lb)
UNIT SIZE
Blower
Motor
A
C
02
03
04
06
200
300
400
600
23
28
36
50
22
27
35
49
17
22
30
44
2
2
2
4
1
1
1
2
1.18
1.53
2.08
3.06
50
60
72
110
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 18 — 42VC Furred-In Lowboy Unit Dimensions
21
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Unit-Mounted Control Box (Optional)
2 — Drain Pan, Auxiliary, Shipped Loose
3 — Air Vent, 1/8-in. MPT
locations are 5/8-in.
2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has
2 motors, 4 blowers.
4 — Supply Conn, 5/8-in. OD
5 — Drain, 3/4-in. MPT
3. Standard 2-row coil shown.
6 — Return Conn, 5/8-in. OD
7 — Filter
4. Optional unit-mounted switch box and controls, when specified,
are installed on opposite side from cooling connections.
5. Height increases by 2 in. with electric heat.
6. Not shown: 3-speed fan switch, 1/2-in. fiberglass insulation on
inside of casing, closed cell foam on main drain pan.
7. Units have galvanized finish.
8 — Electrical Sheath Heater Element
9 — Discharge Opening
8. For optional coil connections, view 42VC-203-1 using the Fan Coil
Builder.
9. Dimensions shown in inches (mm).
A42-4113
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
FACE AREA
(sq ft)
UNIT
WEIGHT* (lb)
UNIT SIZE
Blower
Motor
A
B
C
02
03
04
06
200
300
400
600
23
28
36
50
22
27
35
49
17
22
30
44
2
2
2
4
1
1
1
2
1.18
1.53
2.08
3.06
50
60
72
110
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 19 — 42VC Furred-In Lowboy Unit with Electric Heat Dimensions
22
Download from Www.Somanuals.com. All Manuals Search And Download.
14-3/8
(368)
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Fan Switch, 3-Speed, behind Access Door
2 — Front Panel Fastener
locations are 5/8-in.
2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has
2 motors, 4 blowers.
3 — Stamped Supply Grille
4 — Supply Conn, 5/8-in. OD
5 — Return Conn, 5/8-in. OD
6 — Stamped Return Grille
7 — Filter
3. Cabinet has an Arctic White baked finish.
4. Height increases by 2 in. with electric heat.
5. Standard 2-row coil shown.
6. Not shown: 1/2-in. fiberglass insulation on inside of casing,
closed cell foam on main drain pan.
8 — Air Vent, 1/8-in. MPT
9 — Optional Valve Package (inside cabinet)
10 — Drain Pan, Auxiliary, with 3/4-in. MPT
Drain Connection
7. For optional coil connections, view 42VC-203-1 using the Fan
Coil Builder.
8. Valve package is factory-installed inside the cabinet when
ordered with the unit (based on component size).
11 — Return Air Grille
A42-4114
9. Dimensions shown in inches (mm).
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
UNIT
WEIGHT*
(lb)
FACE AREA
(sq ft)
UNIT SIZE
Blower
Motor
A
B
D
C
33/4
4
17
2
2
2
4
1
1
1
2
1.18
1.53
2.08
3.06
72
100
108
154
22
02
03
04
06
200
300
400
600
41
46
54
68
211/2
301/4
433/8
27
35
49
35/8
41/16
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 20 — 42VE Cabinet Lowboy Unit Dimensions
23
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES:
LEGEND
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Fan Switch, 3-Speed, behind Access Door
2 — Electrical Sheath Heater Element
3 — Stamped Supply Grille
4 — Supply Conn, 5/8-in. OD
5 — Return Conn, 5/8-in. OD
6 — Stamped Return Grille
7 — Filter
locations are 5/8-in.
2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has
2 motors, 4 blowers.
3. Cabinet has an Arctic White baked finish.
4. Height increases by 2 in. with electric heat.
5. Standard 2-row coil shown.
6. Not shown: 1/2-in. fiberglass insulation on inside of casing,
closed cell foam on main drain pan.
8 — Air Vent, 1/8-in. MPT
9 — Front Panel Fastener
7. For optional coil connections, view 42VC-203-1 using the Fan
Coil Builder.
10 — Optional Valve Package (inside cabinet)
11 — Drain Pan, Auxiliary, with 3/4-in. MPT
Drain Connection
8. Valve package is factory-installed inside the cabinet when
ordered with the unit (based on component size).
12 — Return Air Grille
9. Dimensions shown in inches (mm).
A42-4115
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
UNIT
WEIGHT*
(lb)
FACE AREA
(sq ft)
UNIT SIZE
Blower
Motor
A
B
C
D
02
03
04
06
200
300
400
600
41
46
54
68
22
27
35
49
33/4
4
17
2
2
2
4
1
1
1
2
1.18
1.53
2.08
3.06
72
100
108
154
211/2
301/4
433/8
35/8
41/16
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 21 — 42VE Cabinet Lowboy Unit with Electric Heat Dimensions
24
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
NOTES:
1. Right hand unit shown; left hand unit opposite. Coil connection
1 — Supply Conn, 5/8-in. OD
2 — Air Vent, 1/8-in. MPT
3 — Filter
4 — Return Air Grille, Stamped
5 — Stamped Supply Grille
6 — Return Conn, 5/8-in. OD
7 — Removable Front Panel
8 — Drain Conn, 7/8-in. OD
9 — Auxiliary Drain Pan
10 — Valve Compartment
11 — Junction Box
locations are 5/8-in.
2. Front panel has an Arctic White baked finish.
3. Standard 2-row coil shown.
4. Unit size 01 has one motor, one blower; size 03 has 2 motors,
2 blowers.
5. Unit has 1/2-in. flanges for mounting to wall surface.
6. Front panel hooks at top of unit, swing down and snap in at bottom
against a spring clip.
7. Not shown: 3-speed fan switch, wall plate, 1/2-in. fiberglass insula-
tion on inside of casing, closed cell foam on main drain pan.
8. Dimensions shown in inches (mm).
A42-4116
NOM
AIRFLOW
(Cfm)
DIMENSIONS (in.)
QTY/UNIT
UNIT
WEIGHT*
(lb)
UNIT SIZE
Blower
Motor
A
B
C
D
E
01
03
150
300
253/4
393/4
153/4
293/4
14
28
11/2
123/4
257/8
1
2
1
2
40
74
115
/
16
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 22 — 42VG Furred-In Wall Unit Dimensions
25
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
1
DIMENSIONS (in.
/ )
8
QTY/UNIT
UNIT
WEIGHT*
(lb)
NOM
AIRFLOW
(cfm)
1 — Motor Junction Box
2 — Motor-Blower Assembly
UNIT
SIZE
A
A’
B
D’
E
H
Blower Motor
3 — Electric Strip Heater Element (optional)
4 — Auxiliary Drip Lip (Optional, Shipped Loose)
1
1
06
08
10
12
14
16
18
20
600
800
23
28
32
37
42
47
52
56
32
37
42
47
52
56
62
66
14
19
23
28
33
38
43
47
13 /
17
22
26
31
36
41
46
50
18 /
1
1
1
2
2
2
2
2
1
1
1
2
2
2
2
2
64
79
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
5 — Tell-Tale Drain (optional)
1
1
13 /
23 /
7
6 — Drain Connection, / -in. OD
8
1
1
1
7 — Air Vent, / -in. MPT
1000
1200
1400
1600
1800
2000
14 /
27 /
90
8
8 — Supply Connection
9 — Supply Duct Collar, 1 inch
10 — Return Connection
1
1
14 /
32 /
108
119
124
141
151
1
1
14 /
37 /
3
11 — Mounting Holes (four, / -in. diameter) have
1
1
4
13 /
42 /
3
Rubber Grommets with / -in. holes.
8
1
1
14 /
47 /
1
1
14 /
51 /
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other
components.
a42-4120
NOTES:
5
1. Right hand unit shown; left hand unit opposite. Coil connection locations are
/
8
inches.
2. Sizes 06, 08 and 10 have one motor, one blower; sizes 12 through 20 have 2 motors, 2 blowers.
3. Standard 4-row coil shown. Other coil option dimensional data available on request.
4. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.
5. Fan switch, wall plate not shown.
6. Galvanized finish provided as standard.
7. Dimensions are in inches (mm).
Fig. 23 — 42DA Furred-In Ceiling Unit with Electric Heat Dimensions
26
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
1
DIMENSIONS (in.
/ )
8
QTY/UNIT
UNIT
WEIGHT*
(lb)
NOM
AIRFLOW
(cfm)
UNIT
SIZE
1 — Motor Junction Box Opposite Piping
2 — Insulated Return Air Plenum
A
A’
B
D’
E
F
G
H
Blower Motor
3 — Mounting Clips (Shipped Loose)
1
1
1
4 — Electrical Strip Heater Element (optional)
06
08
10
12
14
16
18
20
600
800
23
28
32
37
42
47
52
56
32
37
42
47
52
56
62
66
14
19
23
28
33
38
43
47
13 /
17
22
26
31
36
41
46
50
21
26
30
35
40
45
50
54
25 /
18 /
1
1
1
2
2
2
2
2
1
1
1
2
2
2
2
2
94
107
150
169
174
178
195
220
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
3
5 — Auxiliary Drip Lip (Shipped Loose) with / -in.
8
1
1
1
13 /
30 /
23 /
Hole
1
1
1
1000
1200
1400
1600
1800
2000
14 /
34 /
27 /
6 — Tell-Tale Drain (optional)
7
7 — Drain Connection, / -in. OD
1
1
1
8
14 /
39 /
32 /
8 — Filter Retainer Angle
1
1
1
14 /
44 /
37 /
9 — Access Panel
1
1
1
1
10 — Return Duct Collar, 2 / inches
13 /
49 /
42 /
2
1
11 — Air Vent, / -in. MPT
8
1
1
1
14 /
54 /
47 /
12 — Return Connection
13 — Filter, 1-in.
1
1
1
14 /
58 /
51 /
14 — Supply Duct Collar, 1 inch
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other
components.
15 — Supply Connection
3
16 — Mounting Holes (four, / -in. diameter) with
4
NOTES:
Rubber Grommet
5
1. Right hand unit shown; left hand unit opposite. Coil connection locations are
2. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.
3. Filter and filter rack are standard.
/
8
inches.
4. Standard 4-row coil shown. Other coil option dimensional data available on request.
5. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.
6. Fan switch, wall plate not shown.
A42-4121
7. Galvanized finish provided as standard.
8. Dimensions are in inches (mm).
Fig. 24 — 42DC Furred-In Ceiling Unit with Plenum and Electric Heat Dimensions
27
Download from Www.Somanuals.com. All Manuals Search And Download.
SEE NOTE 8
LEGEND
1
NOM
AIRFLOW
(cfm)
DIMENSIONS (in.
/ )
QTY/UNIT
UNIT
WEIGHT*
(lb)
8
UNIT
SIZE
1 — Motor Junction Box
2 — Air Vent, / -in. MPT
A
B
C
1
Blower
Motor
8
3 — Return Connection
4 — Optional 6-in. Legs
5 — Bottom Return (optional)
6 — Return Air Opening
7 — Supply Connection
06
08
10
12
14
16
18
20
600
800
23
28
32
37
42
47
52
56
21
26
30
35
40
45
50
54
15
20
24
29
34
39
44
48
1
1
1
2
2
2
2
2
1
1
1
2
2
2
2
2
135
145
155
180
190
200
215
230
1000
1200
1400
1600
1800
2000
7
8 — Drain Connection, / -in. OD
8
9 — Front Access Panel
10 — Filter, Throwaway
11 — Electric Strip Heater Element (optional)
12 — Supply Duct Connection, 1-in.
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other
components.
NOTES:
5
1. Right hand unit shown; left hand unit opposite. Coil connection locations are
/
8
inches.
2. Standard 4-row coil shown. Other coil option dimensional data available on request.
3. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.
4. Supply and return connections terminate within unit when valves are factory installed.
5. For optional coil connections, view 42DD-203-1 using the Fan Coil Builder.
6. Fan switch and wall plate are not shown.
7. Galvanized finish provided as standard.
8. Units with internal factory valve packages have external connections located in triangular section
above coil.
9. Consult Carrier for ducted front return air and external filter rack with 1-in. duct collar and throwaway
filters.
A42-4122
10. Units with electric heat require additional access on the side of unit for servicing contactor box.
11. With bottom return, access to filter is through the front access panel.
12. Dimensions are in inches (mm).
Fig. 25 — 42DD Vertical Unit with Full Casing and Electric Heat Dimensions
28
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
1 — Motor Junction Box
1
NOM
AIRFLOW
(cfm)
DIMENSIONS (in.
/ )
QTY/UNIT
UNIT
WEIGHT*
(lb)
8
UNIT
SIZE
2 — Unit Mounting Channel (2), 14-gage; 4 Mounting
A
B
C
D
Blower Motor
1
Slots, / -in. x 2-in.
2
06
08
10
12
14
16
18
20
600
800
31
36
40
45
50
55
60
64
15
20
24
29
34
39
44
48
15
20
24
29
34
39
44
48
26
31
35
40
45
50
55
59
1
1
1
2
2
2
2
2
1
1
1
2
2
2
2
2
150
160
170
195
205
215
230
235
3 — Auxiliary Drip Lip (optional, shipped loose)
4 — Side Access Panels
5 — Electrical Strip Heater Element (optional)
6 — Supply Air Duct Connection, 1 in.
7 — Manual Air Vent
1000
1200
1400
1600
1800
2000
8 — Filter, Throwaway, 1-in.
1
9 — Return Air Duct Connection, 2 / in.
2
7
10 — Drain, / -in. OD
8
11 — Bottom Access Panel
12 — Drain Pan
13 — Coil Inlet, Copper Sweat Connection
14 — Coil Outlet, Copper Sweat Connection
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves,
and other components.
NOTES:
1. Right hand unit shown; left hand unit opposite.
2. Coil stub-out location data available on request.
3. Unit fabricated of galvanized steel.
4. Internal parts fabricated of galvanized steel.
5. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors,
2 blowers.
6. Units must have drain line pitched and trapped externally.
7. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.
8. Fan switch, wall plate not shown.
9. Galvanized finished provided as standard.
10. Dimensions are in inches (mm).
A42-4123
Fig. 26 — 42DE Ceiling Unit with Full Casing and Electric Heat Dimensions
29
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
1
NOM
AIRFLOW
(cfm)
DIMENSIONS (in.
/ )
8
QTY/UNIT
UNIT
WEIGHT*
(lb)
UNIT
SIZE
1 — Junction Box
A
B
C
D
E
Blower Motor
2 — Return Air Grille, Hinged, Bar Type, with Filter
Frame (Anodized Aluminum Only)
1
1
06
08
10
12
14
16
18
20
600
800
31
36
40
45
50
55
60
64
13 /
14
20
24
28
34
38
44
48
26
31
35
40
45
50
55
59
8 /
1
1
1
2
2
2
2
2
1
1
1
2
2
2
2
2
150
160
170
195
205
215
230
235
2
2
2
2
2
2
2
2
2
3 — Unit Mounting Channel (2), 14-gage; 4 Mounting
1
1
Slots,
/
2
in. x 2-in.
18 /
8
4 — Auxiliary Drip Lip
1
1000
1200
1400
1600
1800
2000
22 /
8
5 — Electric Strip Heater Element (optional)
6 — Coil Inlet, Copper Sweat Connection
7 — Coil Outlet, Copper Sweat Connection
8 — Manual Air Vent
1
1
27 /
8 /
2
2
1
32 /
8
1
1
37 /
8 /
9 — Filter, Throwaway
1
10— Bottom Access Panel
42 /
8
8
7
11— Drain, / -in. OD
8
1
46 /
12— Drain Pan Insulated with Styrofoam
13— Side Access Panel (2)
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other
components.
14— Supply Air Grille (Double Deflection)
NOTES:
1. Right hand unit shown; left hand unit opposite.
2. Coil stub-out connection data available on request.
3. Units fabricated of galvanized steel with an Arctic White baked finish.
4. Internal parts fabricated of galvanized steel.
5. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.
6. Units must have drain line pitched and trapped externally.
7. Stamped supply and return grilles are not available.
8. Bottom return air is not available.
A42-4124
9. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.
10. Fan switch and wall plate are not shown.
11. Dimensions are in inches (mm).
Fig. 27 — 42DF Exposed Ceiling Unit with Supply and Return Grille and Electric Heat Dimensions
30
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
CR — Cold Water Return
CS
D
—
—
Cold Water Supply
Drain
HR — Hot Water Return
HS
R
S
—
—
—
Hot Water Supply
Return
Supply
*Drawing provided for reference only. Dimensions may vary with options ordered.
NOTES:
ITEM
DESCRIPTION
Electrical Knockouts
QTY
1
2
3
4
5
1
3/5
1
1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.
1
2. All risers are insulated with / -in. closed cell insulation.
2
3-in. Expanded Section
Strip Heater (Optional)
Limit Switch**†† (Optional)
3. Thermostats shipped loose for field connection.
4. Risers are piped to coil with valves as specified.
1
5. Blower, motor, valves, coil, and filter are accessible through the return air opening.
1
6. Unit and control box are insulated with / -in. coated fiberglass insulation.
2
1
/ -in. Isolation Ball Valves**
2
2/4
1
7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.
1
6
7
Flexible Drain Tube/P-Trap
8. Maximum riser size is 2 / -in. diameter. If larger sizes are required, please consult the factory.
2
9. Expansion loops in hot water heating circuits as required.
1
1
Coil / -in. OD Copper Tube
2
1
10. A 9-in. x 2 / -in. slot is provided in the inside back panel for coil connection penetration to permit expansion
4
8
9
Filter, Throwaway, 1-in.**
Return Air Opening
1
and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.
11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).
12. All dimensions are in inches.
1
A42-4125
10
11
12
13
14
15
16
17
18
19
20
21
22
Air Vent, Manual
1
Molex Connector for Field-Installed Stat
Control Box
1
1
DIMENSIONS (in.)
Single Supply Double Supply Top Supply
NOM
AIRFLOW
(cfm)
UNIT
WEIGHT†
(lb)
Knockout (For Optional Remote Mounting)
Riser, Supply and Return (Copper)
Riser, Drain (Copper)
2
UNIT
SIZE
2/4
1
E
G
H
I
A
B
A
B
C
D
1
1
03
04
06
08
10
12
300
400
14
8
14
6
14
10
17
17
20
20
24
24
1 /
1 /
14
14
18
18
22
22
180
225
240
260
280
305
2
2
2
Drain Pan
1
1
1
14
18
18
—
—
12
10
12
—
—
14
18
18
22
22
6
6
6
8
8
14
16
16
18
18
10
12
12
16
16
1 /
1 /
2
Return Air Blockoff Panel (Optional)
Blower
1
600
1
1
1
1
2
2
3
3
1
Motor, 3-Speed, PSC, with Quick Connect
Access Panel (Control Box)
Control Opening (Surface Mount Stat)
1
800
1
1000
1200
1
1
Duct Collar, / -in. Extension (Typical)
2
1/2/3
1/2/3
†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
23
Supply Air Opening(s)
**Factory-Installed.
††Field-Installed.
Fig. 28 — 42SG Furred-In Stack Dimensions
31
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
CR — Cold Water Return
CS
D
—
—
Cold Water Supply
Drain
HR — Hot Water Return
HS
R
S
—
—
—
Hot Water Supply
Return
Supply
*Drawing provided for reference only. Dimensions may vary with options ordered.
NOTES:
ITEM
1
DESCRIPTION
Full Riser Chase
QTY
1
1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck, painted with Arctic White.
2. 3-speed switch and thermostat are unit mounted.
2
3
4
5
6
Electrical Knockouts
1
3. Risers are piped to coil with valves as specified.
3-in. Expansion Section
Strip Heater (Optional)
Limit Switch**†† (Optional)
3/5
1
4. Blower, motor, valves, coil, and filter are accessible through the return air opening.
5. Unit is insulated with coated fiberglass.
1
6. Control box is insulated with / -in. insulation for unit mounted controls.
2
1
7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.
1
1
8. Maximum riser size is 2 / -in. diameter. If larger sizes are required, please consult the factory.
2
/ -in. Isolation Ball Valves**
2
2/4
1
9. Expansion loops in hot water heating circuits as required.
7
8
9
Flexible Drain Tube/P-Trap
Drain Pan
1
10. A 9-in. x 2 / -in. slot is provided in the inside back panel for coil connection penetration to permit expansion and
4
contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.
11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).
12. 42SHA available in front return only.
1
1
Coil / -in. OD Tube
2
1
A42-4126
13. All dimensions are in inches.
10
11
12
13
14
Filter, Throwaway, 1-in.**
Air Vent, Manual
Control Box
1
1
1
DIMENSIONS (in.)
NOM
AIRFLOW
(cfm)
UNIT
UNIT
SIZE
®
Cabinet Camloc Fasteners
2
Single Supply
Double Supply
WEIGHT†
(lb)
C
D
E
F
G
3-Speed Switch
1
A
B
A
B
3
1
1
3
15
16
17
18
19
Electrical Access Panel
1
03
04
06
08
10
12
300
400
14
8
14
6
17
17
20
20
24
24
22 /
1 /
22 /
14 /
202
247
262
286
311
336
8
8
8
8
8
8
2
2
8
8
8
8
8
8
4
4
4
4
4
4
Riser, Supply and Return (Copper)
Riser, Drain (Copper)
2/4
1
3
1
1
3
14
14
14
18
18
12
12
16
16
16
14
14
14
14
14
8
8
22 /
1 /
22 /
14 /
3
5
3
600
25 /
2
2
3
3
26 /
17 /
Return Air Panel
1
3
5
3
800
10
12
12
25 /
26 /
17 /
Return Air Blockoff Panel (Optional)
1
3
1
3
1000
1200
29 /
31 /
17 /
20
21
22
23
24
Motor, 3-Speed, PSC
Blower
1
3
1
3
29 /
31 /
17 /
1
Thermostat
1
†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Hinged Control Access Door
Double Deflection Steel Core Grille Assembly
1
1
**Factory-Installed.
††Field-Installed.
Fig. 29 — 42SH Cabinet Dimensions
32
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
CR — Cold Water Return
CS — Cold Water Supply
D
—
Drain
HR — Hot Water Return
HS — Hot Water Supply
R
S
—
—
Return
Supply
*Drawing provided for reference only. Dimensions may vary with options ordered.
NOTES:
ITEM
1
DESCRIPTION
QTY
Electrical Knockouts
5
2
1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.
1
2. All risers are insulated with / -in. closed cell insulation.
2
2
Gypsum Board, / -in. Type “X”
8
1
3/5
2
A42-4127
3. Thermostats shipped loose for field connection.
4. Risers are piped to coil with valves as specified.
3
4
5
6
7
3-in. Expanded Section
Strip Heater**(Optional)
5. Blower, motor, valves, coil, and filter are accessible through the return air opening.
1
6. Unit and control box are insulated with / -in. coated fiberglass insulation.
2
Limit Switch**†† (Optional)
1
2
7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.
1
8. Maximum riser size is 2 / -in. diameter. If larger sizes are required, please consult the factory.
2
/ -in. Isolation Ball Valves**
2
4/8
2
9. Expansion loops in hot water heating circuits as required.
Thermafiber Insulation
1
10. A 9-in. x 2 / -in. slot is provided in the inside back panel for coil connection penetration to permit expansion
4
and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.
11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).
12. All dimensions are in inches.
8
9
Flexible Drain Tube/P-Trap
2
1
Coil / -in. OD Copper Tube
2
2
10
11
12
13
14
15
16
17
18
19
Filter, Throwaway, 1-in.**
Return Air Opening
2
2
DIMENSIONS (in.)
NOM
UNIT
UNIT
WEIGHT†
(lb)
Air Vent, Manual
2
AIRFLOW Single Supply Double Supply
(cfm)
Top Supply
SIZE
Knockout (For Optional Remote Mounting)
Molex Connector for Field Installed Stat
Control Box
2
E
G
H
I
J
A
B
A
B
C
D
2
1
1
1
03
04
06
08
10
12
300
400
14
8
14
6
14
10
17
17
20
20
24
24
1 /
1 /
14
14
18
18
22
22
40 /
360
450
480
520
560
610
2
2
2
2
4
4
4
4
4
4
2
1
1
1
14
18
18
—
—
12
10
12
—
—
14
18
18
22
22
6
6
6
8
8
14
16
16
18
18
10
12
12
16
16
1 /
1 /
40 /
Riser, Drain (Copper)
1
1
600
1
1
1
1
2
2
3
3
46 /
Riser, Supply and Return (Copper)
Drain Pan
2/4
2
1
800
46 /
Return Air Blockoff Panel (Optional)
1
1
1000
1200
54 /
20
21
22
23
24
Blower
2
1
54 /
Motor, 3-Speed, PSC, with Quick Connect
Access Panel (Control Box)
Control Opening (Surface Mount Stat)
2
†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
2
2
1
Duct Collar, / -in. Extension (Typical)
2
1/2/3
1/2/3
25
Supply Air Opening(s)
**Factory-Installed.
††Field-Installed.
Fig. 30 — 42SJ Back-to-Back Furred-In Stack Dimensions
33
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
CR — Cold Water Return
CS — Cold Water Supply
D
—
Drain
HR — Hot Water Return
HS — Hot Water Supply
R
S
—
—
Return
Supply
*Drawing provided for reference only. Dimensions may vary with options ordered.
NOTES:
ITEM
1
DESCRIPTION
Electrical Knockouts
QTY
1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.
1
3/5
1
1
2. All risers are insulated with / -in. closed cell insulation.
2
2
3
4
5
6
7
3-in. Expanded Section
Strip Heater** (Optional)
3. Thermostats shipped loose for field connection.
4. Risers are piped to coil with valves as specified.
A42-4128
5. Blower, motor, valves, coil, and filter are accessible through the return air opening.
Limit Switch**†† (Optional)
1
1
1
6. Unit and control box are insulated with / -in. coated fiberglass insulation.
2
7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.
/ -in. Isolation Ball Valves**
2
2/4
1
1
8. Maximum riser size is 2 / -in. diameter. If larger sizes are required, please consult the factory.
2
Flexible Drain Tube/P-Trap
9. Expansion loops in hot water heating circuits as required.
1
1
Coil / -in. OD Copper Tube
2
1
10. A 9-in. x 2 / -in. slot is provided in the inside back panel for coil connection penetration to permit expansion
4
and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.
11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).
12. All dimensions are in inches.
8
9
Filter, Throwaway, 1-in.**
Return Air Opening
1
1
10 Air Vent, Manual
1
DIMENSIONS (in.)
11 Knockout (For Optional Remote Mounting)
12 Molex Connector for Field-Installed Thermostat
13 Control Box
2
NOM
UNIT
UNIT
WEIGHT†
(lb)
AIRFLOW
(cfm)
Single Supply
Double Supply
Top Supply
1
SIZE
E
G
H
I
A
B
A
B
C
D
1
1
1
14 Riser, Supply and Return (Copper)
15 Riser, Drain (Copper)
16 Drain Pan
2/4
1
03
04
06
08
10
12
300
400
14
8
14
6
14
10
17
17
20
20
24
24
1 /
1 /
14
14
18
18
22
22
180
225
240
260
280
305
2
2
2
2
1
1
14
18
18
—
—
12
10
12
—
—
14
18
18
22
22
6
6
6
8
8
14
16
16
18
18
10
12
12
16
16
1 /
1 /
1
600
1
1
1
1
2
2
3
3
17
Return Air Blockoff Panel (Optional)
1
800
18 Blower
1
1000
1200
19 Motor, 3-Speed, PSC, with Quick Connect
20 Access Panel (Control Box)
21 Control Opening (Surface Mount Thermostat)
1
1
1
†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
1
22 Duct Collar, / -in. Extension (Typical)
1/2/3
1/2/3
2
23 Supply Air Opening(s)
**Factory-Installed.
††Field-Installed.
Fig. 31 — 42SGM Furred-In Master Stack Dimensions
34
Download from Www.Somanuals.com. All Manuals Search And Download.
LEGEND
CR — Cold Water Return
CS — Cold Water Supply
D
—
Drain
HR — Hot Water Return
HS — Hot Water Supply
R
S
—
—
Return
Supply
*Drawing provided for reference only. Dimensions may vary with options ordered.
NOTES:
ITEM
1
DESCRIPTION
Electrical Knockouts
QTY
1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.
1
1
1
2. All risers are insulated with / -in. closed cell insulation.
2
2
3
4
5
6
7
8
Strip Heater** (Optional)
3. Thermostats shipped loose for field connection.
4. Risers are piped to coil with valves as specified.
A42-4129
Limit Switch**†† (Optional)
1
1
5. Blower, motor, valves, coil, and filter are accessible through the return air opening.
/ -in. Isolation Ball Valves**
2
2/4
2/4
2/4
1
1
6. Unit and control box are insulated with / -in. coated fiberglass insulation.
2
Coil Stub Outs
7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.
1
8. Maximum riser size is 2 / -in. diameter. If larger sizes are required, please consult the factory.
2
Shipping Brace
9. Expansion loops in hot water heating circuits as required.
Flexible Drain Tube/P-Trap
1
10. A 9-in. x 2 / -in. slot is provided in the inside back panel for coil connection penetration to permit expansion
4
1
and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.
11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).
12. All dimensions are in inches.
Coil / -in. OD Copper Tube
2
1
9
Filter, Throwaway, 1-in.**
1
10 Return Air Opening
1
11 Air Vent, Manual
1
DIMENSIONS (in.)
NOM
UNIT
UNIT
WEIGHT†
(lb)
12 Knockout (For Optional Remote Mounting)
13 Molex Connector for Field-Installed Stat
14 Control Box
15 Drain Pan
16 Return Air Blockoff Panel (Optional)
17 Blower
18 Motor, 3-Speed, PSC, with Quick Connect
19 Access Panel (Control Box)
20 Control Opening (Surface Mount Thermostat)
2
AIRFLOW
(cfm)
Single Supply
Double Supply
Top Supply
SIZE
E
G
H
I
1
A
B
A
B
C
D
1
1
1
03
04
06
08
10
12
300
400
14
8
14
6
14
10
17
17
20
20
24
24
1 /
1 /
14
14
18
18
22
22
162
203
216
234
252
275
2
2
2
2
1
1
1
14
18
18
—
—
12
10
12
—
—
14
18
18
22
22
6
6
6
8
8
14
16
16
18
18
10
12
12
16
16
1 /
1 /
1
600
1
1
1
1
2
2
3
3
1
800
1
1
1000
1200
1
1
21 Duct Collar, / -in. Extension (Typical)
1/2/3
1/2/3
2
†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
22 Supply Air Opening(s)
**Factory-Installed.
††Field-Installed.
Fig. 32 — 42SGS Furred-In Slave Stack Dimensions
35
Download from Www.Somanuals.com. All Manuals Search And Download.
3
3
Item
Description
Float Switch (Optional)
Drain Pan
Qty
1
(76)
(76)
3-5/8
(92)
1
2
3
3-5/8
(92)
1-1/4
(32)
1
HR HS
D
CR CS
1
2
3
Flexible Drain Tube/P-Trap
1
1-1/4
(32)
1 each
side
4
Drain Knockout (3 Sides)
D
4
5
6
7
8
Blower
1
2/4
2/4
1
(102)
1-1/4
(32)
Riser Knockouts (3 Sides)
1/2 in. Flare Adaptor (SWT x 37.5)
Coil, 1/2 in. OD Copper Tube
17
16
1 in. Throwaway Filter
(Factory Installed)
4
9
1
5
H
C
A
H
F
(127)
10
11
Manual Air Vent
1
1
C
L
Return Air Opening
23
22
15
Knockout (For Optional Thermostat
Remote Mounting)
12
3
Molex Connector for Field-Installed
Thermostat
13
14
15
1
1
B
Control Box
Duct Collar Extension
(1/2 in. Side, 1 in. Top)
1/2/3
14
13
Outside Air Knockout
(On Each Side Panel)
16
1
Electrical Knockouts
(Near Each Side)
17
18
19
1
1
1
88
(2235)
21
20
Service Switch (Optional)
18
5
6
12
Motor, 3-Speed, PSC, with Quick
Connect
20
21
Coil Blockoff Plate
1
1
19
Access Panel (Control Box)
Control Opening Knockout
(Surface Mount Thermostat)
H H
C C
22
23
1
11
10
R
S
R
S
Supply Air Openings
(4 Sides and Top, Stitch Cut)
1/2/3
7
63
(1600)
51
(1295)
9
39
(991)
8
LEGEND
5
CR
—
—
—
—
—
Cold Water Return
Cold Water Supply
Drain
(127)
CS
D
8
HR
HS
Hot Water Return
Hot Water Supply
(203)
PSC — Permanent Split Capacitor
SWT — Sweat
I
E
E
NOTES:
1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.
2. Thermostats shipped loose for field connection.
3. Blower, motor, valves, coil, and filter are accessible through the return air opening.
1
4. Unit and control box are insulated with / -in. (13 mm) coated fiberglass insulation.
2
5. All risers will ship separately from units. Riser dimensions are measured from centerline of knockout.
6. Drain knockouts on three sides of cabinet.
a42-4154
7. Flex hoses ship with unit.
8. Thread fittings on both ends of flex hoses must be field tightened and leak tested.
9. Return air panel not shown.
10. All dimensions are in inches (mm).
DIMENSIONS, in. (mm)
UNIT
UNIT
FILTER SIZE
in. (mm)
WEIGHT* lb
(kg)
Side Supply
B
Top Supply
E
SIZE
A
Size
C
D
Size
F
H
I
03
04
06
08
10
12
360 (163)
450 (204)
480 (218)
520 (236)
560 (254)
610 (277)
1
1
14 x 12
14 x 10
12 / x 24 / x 1
2
4
1
14 (356)
12 (305)
12 (305)
16 (406)
14 (356)
10 (254)
17 (432)
20 (508)
24 (610)
3 (76)
1 (25)
1 (25)
1 / (38)
2
14 (356)
18 (457)
22 (559)
(356 x 305)
(356 x 254)
(318 x 616 x 25)
1
3
18 x 12
(457 x 305)
16 x 12
(406 x 305)
16 / x 26 / x 1
4
4
18 (457)
22 (559)
16 (406)
18 (457)
12 (305)
16 (406)
2 (51)
3 (76)
(413 x 679 x 25)
1
1
22 x 16
(559 x 406)
18 x 16
(457 x 406)
20 / x 29 / x 1
2
4
(521 x 743 x 25)
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 33 — 42SU Universal Furred-In Stack Dimensions
36
Download from Www.Somanuals.com. All Manuals Search And Download.
3
(76)
3
(76)
1
3-5/8
(92)
3-5/8
(92)
1-1/4
(32)
2
3
HR HS
D
CR CS
1-1/4
(32)
4
(102)
D
1-1/4
(32)
19
5
18
(127)
4
H
C
A
H
C
L
F
25
17
Item
Description
Float Switch (Optional)
Drain Pan
Qty
1
B
1
2
3
1
5
6
24
16
Flexible Drain Tube/P-Trap
1
1 each
side
15
4
Drain Knockout (3 Sides)
5
6
7
8
9
Limit Switch (Factory Installed)
Strip Heater
1
1
88
(2235)
23
22
14
20
21
7
8
Blower
1
Riser Knockouts (3 Sides)
1/2 in. Flare Adaptor (SWT x 37.5)
2/4
2/4
1
13
12
10 Coil, 1/2 in. OD Copper Tube
H
R
H
S
C
R
C
S
1 in. Throwaway Filter
(Factory Installed)
11
1
9
63
12 Manual Air Vent
13 Return Air Opening
1
1
(1600)
51
(1295)
11
10
Knockout (For Optional
Thermostat Remote Mounting)
14
3
39
(991)
Molex Connector for
15
1
1
Field-Installed Thermostat
16 Control Box
5
(127)
Duct Collar Extension
(1/2 in. Side, 1 in. Top)
8
17
1/2/3
(203)
Outside Air Knockout
18
1
(On Each Side Panel)
I
E
E
Electrical Knockouts
19
1
1
1
(Near Each Side)
LEGEND
20 Service Switch (Optional)
CR — Cold Water Return
CS — Cold Water Supply
Motor, 3-Speed, PSC,
with Quick Connect
21
D
— Drain
22 Coil Blockoff Plate
23 Access Panel (Control Box)
1
1
HR — Hot Water Return
HS — Hot Water Supply
PSC — Permanent Split Capacitor
SWT — Sweat
Control Opening Knockout
(Surface Mount Thermostat)
24
1
Supply Air Openings
25
NOTES:
1/2/3
(4 Sides and Top, Stitch Cut)
1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.
2. Thermostats shipped loose for field connection.
3. Blower, motor, valves, coil, and filter are accessible through the return air opening.
1
4. Unit and control box are insulated with / -in. (13 mm) coated fiberglass insulation.
2
5. All risers will ship separately from units. Riser dimensions are measured from centerline of
knockout.
6. Drain knockouts on three sides of cabinet.
7. Flex hoses ship with unit.
a42-4155
8. Thread fittings on both ends of flex hoses must be field tightened and leak tested.
9. Return air panel not shown.
10. All dimensions are in inches (mm).
DIMENSIONS, in. (mm)
UNIT
UNIT
FILTER SIZE
in. (mm)
WEIGHT*
lb (kg)
Side Supply
B
Top Supply
E
SIZE
A
Size
C
D
Size
F
H
I
03
04
06
08
10
12
360 (163)
450 (204)
480 (218)
520 (236)
560 (254)
610 (277)
1
1
14 x 12
14 x 10
12 / x 24 / x 1
2
4
1
14 (356) 12 (305)
18 (457) 12 (305)
22 (559) 16 (406)
14 (356) 10 (254)
16 (406) 12 (305)
18 (457) 16 (406)
17 (432)
3 (76) 1 / (38) 14 (356)
2
(356 x 305)
(356 x 254)
(318 x 616 x 25)
1
3
18 x 12
(457 x 305)
16 x 12
(406 x 305)
16 / x 26 / x 1
4
4
20 (508)
24 (610)
1 (25)
1 (25)
2 (51) 18 (457)
3 (76) 22 (559)
(413 x 679 x 25)
1
1
22 x 16
(559 x 406)
18 x 16
(457 x 406)
20 / x 29 / x 1
2
4
(521 x 743 x 25)
*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.
Fig. 34 — 42SU Universal Furred-In Stack with Heater Dimensions
37
Download from Www.Somanuals.com. All Manuals Search And Download.
A
a42-4167
PANEL DIMENSIONS (in.)
A
A
PANEL NO.
UNIT SIZE
A
03, 04
06, 08
10, 12
15.5
19.5
23.5
1
2
03, 04
06, 08
10, 12
15.5
19.5
23.5
03, 04
06, 08
10, 12
15.2
19.2
23.2
3
03, 04
06, 08
10, 12
15.5
19.5
23.5
6
03, 04
06, 08
10, 12
15.1
19.1
23.1
7
61.1
55.3
55.5
03, 04
06, 08
10, 12
15.5
19.5
23.5
8
03, 04
06, 08
10, 12
15.2
19.2
23.2
10
NOTE: Dimensions in inches.
PANEL NO. 3
PANEL NO. 2
PANEL NO. 1
A42-4173
a42-4169
A
A
A
A
61.1
60.4
52.5
52.3
PANEL NO. 7
PANEL NO. 8
PANEL NO. 6
PANEL NO. 10
A42-4160
A42-4171
A42-4172
A42-4162
Fig. 35 — Return-Air Wall Panels for Furred-In Units — Panels with No Frame
38
Download from Www.Somanuals.com. All Manuals Search And Download.
PANEL AND FRAME DIMENSIONS (in.)
PANEL NO.
4
UNIT SIZE
A
03, 04
06, 08
10, 12
15.1
19.1
23.1
03, 04
06, 08
10, 12
15.1
19.1
23.1
5
9
03, 04
06, 08
10, 12
15.1
19.1
23.1
A42-4170
NOTE: Dimensions in inches.
A42-4168
A
A42-4161
A
A
60.4
54.7
51.7
PANEL NO. 4
PANEL NO. 5
PANEL NO. 9
Fig. 36 — Return-Air Wall Panels for Furred-In Units — Panels with Frame
39
Download from Www.Somanuals.com. All Manuals Search And Download.
7. Adjust 42VA, VB, VC, VE, VF units leveling legs so unit
is level. Unit must be level for proper operation and
condensate drainage.
INSTALLATION
Step 1 — Place Units in Position
42C UNITS
8. Mounting unit:
1. Select the unit location. Allow adequate space for free air
circulation, service clearances, piping and electrical
connections, and any necessary ductwork. For specific
unit dimensions, refer to Fig. 1-14. Allow clearances ac-
cording to local and national electric codes.
2. Make sure ceiling is able to support the weight of the unit.
See Table 1 for nominal unit weight.
3. Ensure bottom panel has been removed from 42CG, CK
units with mounting holes. When unit is lifted, access to
the 0.375-in. mounting holes is through the bottom of the
unit. Hanger rods and fasteners and other required hard-
ware must be field-supplied.
a. Use rods and fasteners to suspend the unit at the
factory-provided mounting holes with rubber
grommets on the top of the unit on 42VA, VB, VF
units. Reach into unit and attach unit to the wall
using the 0.375-in. mounting holes (4) in top
panel; do not use any other locations. The four
mounting holes and hanger slots with rubber
grommets are NOT for balancing unit.
b. On 42VG unit ensure unit is placed snug within
the wall.
c. On 42VC, VE unit ensure unit is flushed against
the wall.
4. Move unit into position. Ensure unit is level or pitched
towards drain to ensure proper drainage and operation.
Pitch of suspended unit can change after coil is filled;
recheck after filling coil.
NOTE: For any unit without a return-air duct connection,
applicable installation codes may limit unit to installation in
single story residence only.
42D UNITS
5. Mounting unit:
1. Select the unit location. Allow adequate space for free air
circulation, service clearances, piping and electrical con-
nections, and any necessary ductwork. For specific unit
dimensions, refer to the submittal drawings. Allow clear-
ances according to the local and national electrical codes.
2. Be sure either the ceiling (42DA, DC, DE, and DF units)
or floor (42DD unit) is able to support the weight of the
unit. See Table 3 for nominal unit weight.
3. Move unit into position. Ensure unit is level or pitched
towards drain to ensure proper drainage and operation.
See Fig. 23-27. Pitch of suspended unit can change after
coil is filled; recheck after filling coil.
a. Use rods and fasteners to suspend the unit at the
factory-provided mounting holes with rubber
grommets on the top of the unit on 42CG, CK
units. Reach into unit and attach unit to the ceiling
using the 0.375-in. mounting holes (4) in top
panel; do not use any other locations.
b. Use rods and fasteners to suspend the unit at the
factory-provided 0.375-in. hanger slots (4) with
rubber grommets on the top of the unit on the
42CA, CE, and CF units.
NOTE: The four mounting holes and hanger slots
with rubber grommets are NOT for balancing unit.
6. 42CA and 42CF units without plenums and 42CE and CF
with bottom inlet may be installed in noncombustible
areas only.
NOTE: The installation of horizontal concealed units must
meet the requirements of the National Fire Protection Associa-
tion (NFPA) Standard 90A or 90B concerning the use of con-
cealed ceiling space as return-air plenums.
4. Mounting units to the ceiling:
a. When unit is lifted, access to the 0.375-in. mount-
ing holes is on the top panel of the unit. Hanger
rods and fasteners and other required hardware
must be field-supplied.
b. Use rods and fasteners to suspend the unit at the
factory-provided mounting holes with rubber
grommets on the top of the unit. Attach unit to the
ceiling using the 0.375-in mounting holes (4) in
top panel; do not use any other locations.
c. Use the rods and fasteners to suspend the unit at
the factory-provided 0.375-in. hanger slots (4)
with the rubber grommets on the top of the unit on
the 42DA, DC, DE, and DF units.
42V UNITS
1. Select the unit location. Allow adequate space for free air
circulation, service clearances, piping and electrical
connections, and any necessary ductwork. For specific
unit dimensions, refer to the submittals. Allow clearances
according to local and national electric codes.
2. Make sure the floor is able to support the weight of the
unit. See Table 2 for nominal unit weight.
NOTE: The four mounting holes and hanger slots
with rubber grommets are NOT for balancing unit.
3. Ensure wall behind unit is smooth and plumb; if
necessary, install furring strips on walls with irregular
surfaces or mullions. Furring strips must be positioned
behind mounting holes in unit (42VA, VB, VF units).
Fasteners, furring strips, and other seals (if required) must
be field-supplied.
d. Models 42DA and 42DC with bottom inlet may be
installed in noncombustible return spaces only.
5. Mounting units on the floor:
a. Ensure wall behind the unit is smooth and plumb;
if necessary, install furring strips on walls with
irregular surfaces or mullions. Furring strips must
be positioned behind mounting holes on 42DD
units. Fasteners, furring strips, and other seals (if
required) must be field-supplied.
4. Remove all wall and floor moldings from behind the unit.
5. Ensure 42VA top panel (under window application) and
42VB, VF front panel has been removed from unit to
obtain access to the four 0.75-in. mounting holes. Hanger
rods and fasteners and other required hardware must be
field-supplied.
b. If the unit has leveling legs, adjust them correctly
to level the unit.
6. Protect units from damage caused by jobsite debris. Do
not allow foreign material to fall in unit drain pan.
Prevent dust and debris from being deposited on motor or
fan wheels.
6. Move unit into position. Ensure unit is level or pitched
towards drain to ensure proper drainage and operation.
Pitch of suspended unit can change after coil is filled;
recheck after filling coil.
40
Download from Www.Somanuals.com. All Manuals Search And Download.
42S UNITS — A factory tag is on top of each unit. Tag states
riser tier number, floor, room number if furnished and supply-
air arrangement. Check unit for any other labels that apply to
installation. Remove unit from pallet and take directly to
assigned space for installation. Great care must be taken to
assure that no force or pressure be applied to the coil, risers or
piping during handling. Never use the riser to lift the unit. To
maintain the straight and square cabinet alignment, avoid lift-
ing or supporting the cabinet only at the top and bottom.
1. Begin on lowest floor and progress upward, floor by
floor, to top.
2. Examine drain line (Fig. 28-34). Be sure both ends are in
place and that it forms a trap. Avoid pinching drain line.
CHASE
SIDE
PANEL
INSTALL WALL
STUD INTO
POCKET
FORMED BY
CHASE SIDE
PANEL
DRYWALL
TRACK AND
STUD
CONTROL
LINES
3. Tip unit over riser hole in building floor. As unit is
righted, align riser with unit below.
INSTALL STUDS FROM TOP OF
UNIT TO CEILING (4 CORNERS)
NOTE: The unit must be lowered into the space taking
care to properly align the risers to engage the riser swaged
section on the unit below. The riser should never be bent
or pushed together to be passed through the floor slot and
should never be lifted up or pulled down to meet the riser
on the floor below or above.
Fig. 38 — 42SJ Unit as Shipped
NOTE: Tracking may be installed now or after the
unit is set.
b. Position the 42SJ fan coil assembly between two
rooms with the unit drywall separation spotted
over the wall control lines.
4. Install isolator pads beneath the four corners of unit if
applicable.
c. If not already installed, install the floor and ceiling
tracks up to and over the 42SJ fan coil unit.
d. Position the vertical studs and fasten into each of
the stud pockets formed into the chase side panels
(see Fig. 38).
5. Before anchoring the equipment in place, the unit must be
leveled and the cabinet must be squared and brought into
line with any adjacent or included walls. The unit may be
anchored in place by bolting directly through the unit
floor or attaching to the cabinet in some location that will
not interfere with drywall or other items such as the sup-
ply grille, thermostat, or return access panel. When at-
taching to the unit cabinet, care must be taken to not pen-
etrate the cabinet in locations that may damage internal
components or wiring. The mounting technique is a mat-
ter of choice; however, the unit should always be an-
chored securely to prevent movement during construction
and riser expansion and contraction. On certain units,
shipping screws or braces must be removed after the unit
is installed. Be sure to check all tags on the unit to deter-
mine which, if any, of these devices need to be removed.
NOTE: The studs may be mechanically fastened
to the 42SJ fan coil. Care should be taken, how-
ever, not to penetrate the supply or return water
risers or internal piping. Given the levelness of the
floor and/or the fan coil assembly, some shimming
may be necessary.
e. Assemble the specified wall construction up to
and over the top of the fan coil unit (see Fig. 39).
f. With the fire-wall separation being complete, the
drywall skin on the surface of the individual fan
coils can be applied. Drywall can be applied
directly to the surface, or, if necessary, studding
may be installed on the corners for vertical control
(see Fig. 39).
g. For ease of installation of the access panel, apply
drywall on the return air side directly to the sur-
face of the unit (see Fig. 39). When applying the
wall board directly to the unit cabinet, it may be
necessary to shim the wall board in some areas to
achieve the desired finished wall surface.
6. If installing a 42SJ unit, follow Steps a-h. For all other
42S units, continue to Step 7.
NOTE: The 42SJ back-to-back fan coils have been de-
signed to serve two separate rooms. These products are
classified by Underwriters Laboratories Inc. for use in
penetration firestop systems, control number 27WL when
ordered with 1-hr rated chase. See UL Fire Resistance
Directory for more information. Figure 37 shows the
42SJ unit with standard risers and with Siamese risers.
a. Lay out the control lines for the drywall track and
studs in the floor and ceiling (see Fig. 38).
INSTALL WALL
GYPSUM
BOARD
WALL STUDS
(TO WALL AND
OVER TOP OF
UNIT)
42SJA
42SJB
42SJA
42SJB
INSTALL
GYPSUM
BOARD TO
UNIT SIDES
INSTALL
GYPSUM
BOARD TO
FACE OF
UNIT WITH
CUT OUTS
FOR SUPPLY,
RETURN AND
THERMOSTAT
Fig. 37 — 42SJ Unit with Standard and Siamese
Risers
Fig. 39 — 42SJ Unit Installation
41
Download from Www.Somanuals.com. All Manuals Search And Download.
h. After all drywalling and painting is complete,
install thermostats, supply air grilles and return air
panels.
IMPORTANT: Chilled water and hot water risers should
never be piped to drain down into the condensate riser.
Extensive water damage can occur due to drain over-
flow. Drain chilled and hot water risers to a remote loca-
tion away from the unit such as sink, room and floor
drains.
7. Attach unit risers:
CAUTION
8. Anchor risers as required:
Toxic residues and loose particles resulting from manufac-
turing and field piping techniques such as joint compounds,
soldering flux, and metal shavings may be present in the
unit and the piping system. Special consideration must be
given to system cleanliness when connecting to solar,
domestic or portable water systems. Failure to heed this
warning could result in equipment damage.
a. Do not fasten risers rigidly within each unit.
Risers must be free to move within pipe chase
in response to normal vertical expansion and
contraction.
b. Built in risers must be anchored at some point
to building structure. Unit design accommodates
1
up to 1 / -in. expansion and contraction in riser
2
NOTE: The supply and return connections are marked on
the coil stub-outs and the valve package with an “S”
meaning supply or inlet and “R” meaning return or outlet
indicating flow direction to and from the coil. Blue letters
mark the chilled water connections and red letters mark
the hot water connections.
a. Each riser has a 3-in. swaged portion at top and
sufficient extension at bottom for an inserted
length of approximately 2-in. This unit-to-unit
joint is NOT intended for full bottoming in the
joint, but allows for variations in floor-to-floor
dimensions and for correct riser positioning.
assemblies when positioned properly at the job
site. Risers must be anchored to the building struc-
ture to limit expansion and contraction movement
1
to a maximum of 1 / -inches. Riser anchoring and
2
expansion compensation is not included in the fac-
tory-supplied unit and must be provided.
9. Test the system for leaks after the connections are com-
pleted. When testing with air or some other gas, it might
be necessary to tighten stem packing nuts on some valves
to maintain air pressure in the riser. Pressure testing risers
with water should be done with the unit service valves
closed to prevent flushing debris into the unit valve pack-
ages. This will also allow risers to be drained down after
testing in the winter to avoid freeze-up problems.
10. After system integrity has been established, pull the riser
insulation back into place over the joint and glue or seal
to prevent sweating and heat loss or gain. Internal chilled
water piping and valves are located over the drain pan
and need not be insulated.
11. If required, fireproof were necessary. Any fireproofing re-
quirements where risers or piping penetrate floors or
walls are the responsibility of the installer. This work
should be done only after all pressure testing is complet-
ed. The fireproofing method used must accommodate
pipe expansion and contraction and the piping must be
protected from abrasion and chemical attack. The pipe in-
sulation also must be maintained to prevent sweating and
must be protected from wear or erosion at the joint be-
tween the insulation and the fireproofing material.
If job requires that unit risers be supplemented
with between-the-floor extensions pieces may be
field-supplied or factory-supplied. If factory-
supplied, insulation is also provided.
b. Level unit to ensure proper coil operation and
condensate drainage. Proper riser installation and
vertical positioning in the unit provides for a unit
piping run-out to the service valves which are cen-
tered in the access slots and level or sloping down
slightly away from the riser. This prevents con-
densation from running back to the riser and pos-
sible damage from dripping at the bottom of a
riser column. After units are positioned and riser
centered in pipe chase, make unit plumb in two
directions, using unit frame as a reference.
c. Anchor unit to building. Use bolts or lag screws
through holes provided in unit frame.
d. After all units in a stack are anchored, make unit-
to-unit riser joints. First, center each coil-to-riser
line within the expansion slot in the unit back
panel. Each riser joint must be in vertical
alignment with at least 1-in. penetration into the
swaged joint. This condition is met if floor-to-
floor dimension is as specified and coil-to-riser
lines are properly centered. Wide variations in
floor-to-floor dimensions may necessitate cutting
off or extending individual risers. Such modifica-
tions are the full responsibility of the installing
contractor.
e. Before making the riser joints, the riser insulation
must be pulled back away from the joint and pro-
tected from heat during the soldering process. Sol-
der riser joints with phos-copper, silfos, or other
high temperature alloy. The riser joint filler mate-
rial must be selected to withstand the total operat-
ing pressure (both static and pumping head) to
which the system will be subjected. Soft solder
(50-50, 60-40, or 85-15) or other low temperature
lead alloy is not suitable for this application.
Step 2 — Make Piping Connections — Access to
piping is available through the access panels at the side of the
units or front of the unit. Qualified personnel in accordance
with local and national codes must perform all piping connec-
tions. Refer to Tables 1-4 for piping connections.
NOTE: It is important to have a common understanding of
which side of the unit is the right hand side and which is the
left hand side.
When facing the supply air outlet from the front of the unit
(air blowing in your face), your right hand will be on the right
side of the unit and your left hand will be on the left side of the
unit. See Fig. 40. Refer to Fig. 41 and 42 for typical piping
connections.
The supply and return piping connections of the factory-
provided valve package are either swaged for field brazing
(standard) or union fitted (optional) for field connection to the
coil.
42
Download from Www.Somanuals.com. All Manuals Search And Download.
VALVE PACKAGES — There are limitations on physical
size of pneumatic valves, quantity and type of matching
components, and required control interface. See Fig. 43.
Consult factory before ordering any special valve package
components that are not covered in this book.
Valve packages are shipped with the units or in unit cartons.
Valve packages include belled ends for field soldering to coil
connections.
All factory-furnished cooling valve packages are arranged
to position as much of the package as possible over an auxiliary
drain pan or drip lip. This helps minimize field piping insula-
tion requirements. Refer to Fig. 44-47 for pipe connection
configurations. See Table 5 for descriptions of common piping
components.
Fig. 40 — Unit End Reference
NOTE: Chilled water piping determines the hand of the unit.
NOTE: Chilled water piping determines the hand of the unit.
SAME END CONNECTION
OPPOSITE END CONNECTION
Valve Packages For 2-Pipe Systems — Valve packages for standard 2-pipe units are piped for same end
connection (L.H. or R.H.).
Valve Packages for 4-Pipe Systems — Select 2 valve packages per unit.
NOTE: Hot water valve package requirements may not be the same as chilled water valve package!
SAME END CONNECTION
OPPOSITE END CONNECTION
LEGEND
CW — Chilled Water
HW — Hot Water
LH — Left Hand
RH — Right Hand
Fig. 41 — Pipe Connection Configurations
43
Download from Www.Somanuals.com. All Manuals Search And Download.
Hydronic Coil Arrangement
Field Piping Connections*
VERTICAL FLOOR UNITS — 42VB, VE, VF
Pipe into cabinet end compartment (opening in bottom and
back).
VERTICAL FLOOR UNITS — 42VA, VC
Pipe to external connections (no cabinet).
CEILING UNITS (EXPOSED) — 42CG, CK, DE, DF
Pipe through knock-outs in rear of cabinet to coil and valve
package connections.
CEILING UNITS (CONCEALED) — 42CA, CE, CF, DA, DC
Pipe to connections extending from end of unit.
VERTICAL UNITS — 42DD
Pipe to stub connections extending from side of unit.
WALL UNITS, FURRED-IN
Pipe to stub connections at the side of unit.
42VG
42VG
a42-4177
or into optional piping compartment. Optional piping compart-
ment is required if valves are factory installed. Factory-installed
valve package is limited to one 2-way or 3-way motorized valve
and 2 hand valves.
*Location of field piping connections will vary depending on number of coil rows on factory-supplied coil or
arrangement of factory-supplied valves.
Fig. 42 — Piping Connection Positions
44
Download from Www.Somanuals.com. All Manuals Search And Download.
Coil Connections (Positions A & B) — When isolation valve only is added to supply or return line, the isolation valve will
be factory brazed to the coil stub-out. Addition of any other component or connection to the supply or return line will change
the respective coil connection(s).
Service Fittings (Positions C & D) — Optional fittings for attaching pressure/temperature sensing devices to obtain pres-
sure drop or temperature differential across coil. Used with ball valve or balance valve where extremely accurate water flow
balancing is required.
Water Flow Balancing (Positions E, F, & H) — Only one device per total valve package to be used for balancing water
flow through the coil. When isolation valve (ball valve or ball valve with memory stop at position H) is used for water flow bal-
ancing, do not specify additional balancing device at position E or F. When balancing device is specified at position E or F,
isolation valve does not require balancing feature at position H (with a 3-way motorized valve, a bypass balancing valve
may be specified in the bypass line to permit equal flow balancing).
Strainer (Position G) — Does not include blow down fitting and should not be used in lieu of main piping strainers.
Isolation Valves (Positions H & J) — Normally requires one each on supply and return line (see exception under circuit
setter). When position H is used for balancing (ball valve or ball valve with memory stop), check specifications for service
valve requirements.
Fig. 43 — Symbols and Placement of Valves
45
Download from Www.Somanuals.com. All Manuals Search And Download.
The 2-way motorized valve motor drives valve open and a
spring returns valve to normally closed position (no water
flow with unit OFF).
a42-4174
Supply connection at coil will be swage fit for field braze
(standard) or union (option). Return connection at coil will
be factory brazed if isolation valve only. Addition of any
other component will require swage fit for field braze or
optional union connection.
Check job specifications for system pressure, pressure drop
limitations and flow rate prior to selecting valve package
MOTORIZED
M
1
3
components or valve package size ( / in., / in., etc.).
2
4
2-PIPE SYSTEM (One Valve Package) or 4-PIPE SYSTEM
(Two Valve Packages) Application:
• 2 Pipe — Hydronic Heating Only
• 2 Pipe — Hydronic Cooling Only
• 2 Pipe — Hydronic Cooling with Total Electric Heat
• 4 Pipe — Hydronic Cooling and Heating
1
LEGEND
Ball Valve
NOTE: A / -in. bypass line is included in the piping pack-
4
age when a 2-way valve is specified with a control package
containing an automatic changeover device.
Motorized 2-Way Valve
Fig. 44 — Two-Way Motorized Control Valve Package
a42-4175
The 2-way motorized valve motor drives valve open and a
spring returns valve to normally closed position (no water
flow through coil with unit OFF).
The aquastat bleed bypass bleeds a small amount of water
from supply to return when control valve is closed (required
for system water temperature sensing by aquastat).
Aquastat (A) clips on supply line upstream from aquastat
bleed bypass (as shown at right). It senses system water
temperature to prevent cooling operation with hot water in
system piping or heating operation with chilled water in
system piping. Additional aquastat required to lock out the
optional auxiliary electric heat when hot water in system.
MOTORIZED
M
BALL VALVE
(1) GATE
(1) BALL
R
S
Supply and return connections at coil will be swage fit for
field braze (standard) or unions (option).
(1) 2-WAY MOTORIZED
MOTORIZED
2-WAY VALVE
GATE
SHUT OFF
COIL
M
Check job specifications for system pressure, pressure drop
limitations and flow rate prior to selecting valve package
A
1
3
components or valve package size ( / in., / in., etc.).
BYPASS
2
4
2-PIPE SYSTEM (One Valve Package) Application:
• 2 Pipe — Hydronic Cooling and Heating
• 2 Pipe — Hydronic Cooling and Heating with Auxiliary
Electric Heat
BALL VALVE
BALL VALVE
BALANCING
(2) BALL
VALVE
(1) BALANCING
(1) 2-WAY MOTORIZED
R
S
NOTES: Additional aquastat required as noted above.
COIL
M
BYPASS
A
LEGEND
MOTORIZED
2-WAY VALVE
Balancing Valve
CIRCUIT SETTER
Ball Valve
(1) BALL
(1) CIRCUIT SETTER
(1) 2-WAY MOTORIZED
Circuit Setter
Gate Shut Off Valve
R
S
MOTORIZED
2-WAY VALVE
BALL VALVE
A
COIL
M
Motorized 2-Way Valve
BYPASS
Fig. 45 — Two-Way Motorized Control Valve Package with Aquastat Bleed Bypass Line
46
Download from Www.Somanuals.com. All Manuals Search And Download.
On the 3-way motorized valve flow is normally closed to coil
and open to system return. Motor closes bypass flow to sys-
tem return while opening flow through coil. Water bypasses
coil and flows directly to system return when unit is OFF.
a42-4176
The aquastat (A) clips on supply line upstream from 3-way
valve (as shown above). It senses system water tempera-
ture to prevent cooling operation with hot water in system
piping or heating operation with chilled water in system pip-
ing. Aquastat(s) required for 2-pipe cooling and heating with
automatic changeover control and/or auxiliary electric heat.
MOTORIZED
M
A bypass balancing valve may be specified in the bypass
line to permit equal flow balancing.
Supply and return connections at coil will be swage fit for
field braze (standard) or unions (option).
BALANCING
VALVE
BALL VALVE
MOTORIZED
3-WAY VALVE
(1) BALL
(1) 3-WAY MOTORIZED
R
S
BYPASS
M
Check job specifications for system pressure, pressure drop
limitations and flow rate prior to selecting valve package
COIL
BALL VALVE
1
3
components or valve package size ( / in., / in., etc.).
2
4
2-PIPE SYSTEM (One Valve Package) or 4-PIPE SYSTEM
(Two Valve Packages) Application:
BALL VALVE
• 2 Pipe — Hydronic Heating Only
(WITH MEMORY STOP)
MOTORIZED
3-WAY VALVE
• 2 Pipe — Hydronic Cooling Only
(2) BALL (ONE WITH
MEMORY STOP)
• 2 Pipe — Hydronic Cooling with Total Electric Heat
• 2 Pipe — Hydronic Cooling and Heating
• 2 Pipe — Hydronic Cooling and Heating with Auxiliary
Electric Heat
M
R
S
(1) 3-WAY MOTORIZED
BYPASS
M
COIL
BALL VALVE
BALL VALVE
• 4 Pipe — Hydronic Cooling and Heating
MOTORIZED
3-WAY VALVE
(1) GATE
(1) BALL
R
S
(1) 3-WAY MOTORIZED
LEGEND
Balancing Valve
Ball Valve
M
BYPASS
GATE
COIL
SHUT OFF VALVE
Ball Valve with Memory Stop
M
BALL VALVE
Circuit Setter
BALANCING
VALVE
(2) BALL
Gate Shut Off Valve
(1) BALANCING
(1) 3-WAY MOTORIZED
R
S
M
BYPASS
Motorized 3-Way Valve
BALL VALVE
COIL
MOTORIZED
3-WAY VALVE
*When aquastat is used for automatic changeover, bypass is
required as indicated by dashed line.
NOTES:
CIRCUIT SETTER
1. Packages factory furnished and installed.
2. Valves are 5/8-in. ODS unless otherwise specified.
3. If an automatic flow control valve is added, it will be
located on supply line between shutoff valve and coil (or
motorized control valve, if supplied).
MOTORIZED
3-WAY VALVE
(1) BALL
(1) CIRCUIT SETTER
(1) 3-WAY MOTORIZED
R
S
BYPASS
M
COIL
COIL
BALL VALVE
Fig. 46 — Three-Way Motorized Control Valve Package
47
Download from Www.Somanuals.com. All Manuals Search And Download.
When isolation valves only are specified, they will be brazed
to the coil stub-outs.
Check job specifications for system pressure, pressure drop
limitations and flow rate prior to selecting specific compo-
1
3
nents or valve package size ( / in., / in., etc.).
2
4
2-PIPE SYSTEM ONLY (One Valve Package) Application:
• 2 Pipe - Hydronic Heating Only
• 2 Pipe - Hydronic Cooling Only
NOTES:
1. Continuous water flow, chilled water or hot water.
2. Not recommended for high humidity applications.
3. Not recommended with unit-mounted thermostat on
vertical units (except package R).
4. The addition of any other component(s) will
require swage fitting for field braze or optional union
connection.
WITH HAND VALVES ONLY
(2) BALL
BALL VALVE
BALL VALVE
LEGEND
Balancing Valve
Ball Valve
R
S
COIL
Ball Valve with Memory Stop
M
Circuit Setter
Gate Shut Off Valve
BALL VALVE
(1) BALL
(1) GATE
Motorized 2-Way Valve
R
S
GATE SHUT
OFF VALVE
COIL
*When aquastat is used for automatic changeover, bypass is
required as indicated by dashed line.
NOTES:
1. Packages factory furnished and installed.
2. Valves are 5/8-in. ODS unless otherwise specified.
3. If an automatic flow control valve is added, it will be
located on supply line between shutoff valve and coil (or
motorized control valve, if supplied).
BALL VALVE
BALL VALVE
(2) BALL
(1) BALANCING
R
S
BALANCING
VALVE
COIL
CIRCUIT SETTER
(1) BALL
(1) CIRCUIT SETTER
R
S
COIL
BALL VALVE
BALL VALVE
BALL VALVE
(2) BALL
(1) 2-WAY MOTORIZED
R
S
MOTORIZED
2-WAY VALVE
M
COIL
BALL VALVE (WITH
MEMORY STOP)
(2) BALL (ONE WITH
MEMORY STOP)
M
R
S
(1) 2-WAY MOTORIZED
MOTORIZED
2-WAY VALVE
M
BALL VALVE
COIL
Fig. 47 — Valve Package without Motorized Control
48
Download from Www.Somanuals.com. All Manuals Search And Download.
42C,D,V DRAIN CONNECTIONS — Install drain line in
accordance with all applicable codes. A continuous pitch of
1 in. per 10 ft of condensate drain line run is necessary for
adequate condensate drainage. Insulate the drain line to
prevent sweating. Extend the drain line straight from the drain
pan before making any turns. The installer must provide proper
support for the drain line to prevent undue stress on the
auxiliary drain pan.
Install trapped drain line in accordance with all applicable
codes (see Fig. 48). A drain trap may be required by local
codes and is recommended for odor control. The differential
height inlet to outlet must be at least 1-in. wg greater than the
total static pressure of the unit. The differential height of the
outlet to the bottom of the trap must not be less than the total
static pressure of the unit.
NOTE: The project specifications for system pressure, pres-
sure drop limitations, and flow rate should be checked prior to
selection of specific components or the valve package size.
42C,D,V STEAM CONNECTIONS — On units with steam
heating coils, the maximum steam pressure applied to the unit
should never exceed 10 psig. However, when steam is used on
a 4-pipe application system with 1-row and 2-row coils the
maximum steam pressure should never exceed 5 psig (suitable
for only low pressure steam).
Do not drain the steam mains or take-off through the coils.
Drain the mains ahead of the coils through a steam trap to the
return line. Overhead returns require 1 psig of pressure at the
steam trap discharge for each 2 ft elevation to ensure continu-
ous condensate removal.
Proper steam trap selection and installation is necessary. As a
guideline in creating a steam trap locate the steam trap dis-
charge at least 12 in. below the condensate return connection.
This provides sufficient hydrostatic head pressure to overcome
trap losses and ensure complete condensate removal.
Provide a trap of at least 2-in. near the end of the drain line
to prevent odors from entering the rooms.
42C,D,V DIRECT EXPANSION (DX) REFRIGERANT
PIPING — Use the condensing unit manufacturer's recom-
mended line sizes and requirements. Suction line must be
insulated for correct operation. Use refrigerant-grade copper
lines only. The unit is not applied as a heat pump.
Thermostatic expansion valve (TXV) and sensing bulb are
factory-installed on units when DX coil option is chosen with
distributor and TXV.
2 IN. MIN
NOTE: If a hot water coil is used in the reheat position, a field-
supplied freezestat must be installed to protect the coil.
CONDENSATE
PAN STUB-OUT
TRAP
7/8 IN. FIELD-SUPPLIED
DRAIN EXTENSION
TEST AND INSULATE — When all joints are complete,
perform hydrostatic test for leaks. Vent all coils at this time.
Check interior unit piping for signs of leakage from shipping
damage or mishandling. If leaks are found, notify a Carrier
representative before initiating any repairs. Release trapped air
from system (refer to Make Final Preparations section).
Never pressurize any equipment beyond specific test pres-
sure. Always pressure test with an inert fluid or gas, such as
clear water or dry nitrogen to avoid possible damage or injury
in the event of a leak or component failure during testing.
Fig. 48 — Typical Drain Line Details
(42D Unit Shown)
42C,D,V WATER SUPPLY/RETURN CONNECTIONS —
Install piping in accordance with all applicable codes. Position
valves over the drain pan. Be sure valves are in proper operat-
ing position and are easily accessible for adjustment. See
Fig. 44-47. Refer to Fig. 49 for copper water tube and joint
material pressure ratings.
If coil and valve package connections will be made with a
solder joint, care should be taken to ensure that the components
in the valve package are not subjected to high temperatures,
which may damage seals or other materials. Many 2-position
electric control valves are provided with a manual operating
lever. This lever should be in the OPEN position during all
soldering operations.
CAUTION
All water coils must be protected from freezing after initial
filling with water. Even if system is drained, unit coils may
still have enough water to cause damage when exposed to
temperatures below freezing.
If coil connection is made with a union, the coil side of the
union must be prevented from turning (it must be backed up)
during tightening. See Fig. 44-47 for common valve packages.
Following the hydrostatic test, insulate all piping to prevent
sweating.
To ensure compliance with building codes, restore the struc-
ture's original fire resistance rating by sealing all holes with
material carrying the same fire rating as the structure.
CAUTION
DO NOT OVERTIGHTEN! Overtightening will distort
(egg shape) the union seal surface and destroy the union.
49
Download from Www.Somanuals.com. All Manuals Search And Download.
Table 5 — Piping Components
C FACTOR
RATING*
V
STEAM
USE
SYMBOL/SKETCH
DESCRIPTION
1
3
/ in.
/ in.
4
PSI
F
2
MANUAL AIR VENT: Threaded brass needle
valve with screwdriver slot for adjustment.
Application — Body brazed into high point of
heating and cooling coils for bleeding air from
coil. Standard item on all hydronic coils (not
used on steam or DX coils). Should not be
used in lieu of main system air vents.
N/A
N/A
400
100
NO
AUTOMATIC AIR VENT: Nickel plated brass
valve, fiber-disc type, with positive shut-off ball-
check and quick vent feature via knurled vent
screw.
Application — Optional replacement for man-
ual air vent. Automatically passes minute
quantities of air through the fiber discs which
expand upon contact with water, completely
sealing the valve. As air accumulates, the fiber
discs dry and shrink, repeating the cycle. Not
recommended for removing large quantities of
air encountered during initial start-up or subse-
quent draining and refilling. Should not be
used in lieu of main system air vents.
N/A
N/A
125
240
NO
SWAGE: Copper tube end expanded to accept
a copper tube of the same size for factory or
field brazing.
Application — Used where possible for all tub-
ing joints for best joint integrity.
N/A
N/A
N/A
N/A
300
300
200
200
YES
YES
UNION: Combination wrought copper/cast
brass union assembly, solder by solder.
Application — Used for quick connect (and dis-
connect) of valve package components to min-
imize field labor and facilitate servicing of unit.
INSERTION TEST PORT: Brass body valve
1
for acceptance of test probe (up to / in.
8
diameter).
N/A
N/A
250
250
NO
Application — Installed on one (or both) sides
of the coil to allow for temperature or pressure
sensing. Used for close tolerance water bal-
ancing and service analysis.
LEGEND
Cv — Coefficient of Velocity
DX — Direct Expansion
NOTES:
1. Motorized 2-way valves have a maximum close-off differential
of 25 psi.
2. Motorized 3-way valves have a maximum close-off differential
of 10 psi.
*Check all system component pressure ratings (coils, values,
pumps, etc.) with manufacturer and any applicable local or national
piping codes prior to specifying system pressure rating.
50
Download from Www.Somanuals.com. All Manuals Search And Download.
Table 5 — Piping Components (cont)
C FACTOR
RATING*
V
STEAM
USE
SYMBOL/SKETCH
DESCRIPTION
1
3
/ in.
2
/ in.
4
PSI
F
1
PRESSURE TEST PORT: Brass body / in.
4
service access fitting with removable depres-
sor type core.
N/A
N/A
N/A
N/A
400
200
210
NO
Application — Installed on both sides of the
coil to allow for pressure sensing. Attach
pressure gages to facilitate close tolerance
water balancing.
GAGE COCK: Brass shut-off valve with
1
/ in. FPT fitting for attachment of pressure
4
gages.
Application — Installed on both sides of the
coil to allow for pressure sensing. Attach
pressure gages to facilitate close tolerance
water balancing. May be used in bleed
bypass line to regulate water flow.
250
250
N/A
CIRCUIT SETTER: Variable water flow bal-
ancing valve with manual adjustment knob,
pointer, percent-open scale, memory stop
and integral pressure read-out ports.
Application — Used for close tolerance water
flow balancing. Positive shut-off ball valve
feature allows usage as combination balanc-
ing and shut-off valve.
2.12
3.9
8.9
300
150
NO
NO
BALANCE VALVE: Variable water flow man-
ual balancing valve with screwdriver slot
adjustment screw.
Application — Often used in conjunction with
test port fittings for water flow balancing. Bal-
ance by temperature differential or coil pres-
sure drop (check specifications for service
fittings required if balancing by pressure
drop). May be used in 3-way valve bypass
line to permit equal flow balancing.
3.0
200
FIXED FLOW VALVE: Flexible orifice type
(non-adjustable).
Valve orifice size
determines C fac-
V
tor. The orifice of
these fixed flow
valves changes as
flow is regulated.
As the water pres-
sure increases,
the orifice size
decreases,
Application — Used for water flow balancing.
Valve automatically adjusts the flow to within
10% of set point. Requires 15 psi
(35 ft) of additional pump head for proper
operation.
FLOW
150
160
NO
thereby automati-
cally limiting the
flow rate to the
specified gpm
( 10%).
LEGEND
Cv — Coefficient of Velocity
DX — Direct Expansion
NOTES:
1. Motorized 2-way valves have a maximum close-off differential
of 25 psi.
2. Motorized 3-way valves have a maximum close-off differential
of 10 psi.
*Check all system component pressure ratings (coils, values,
pumps, etc.) with manufacturer and any applicable local or national
piping codes prior to specifying system pressure rating.
51
Download from Www.Somanuals.com. All Manuals Search And Download.
Table 5 — Piping Components (cont)
C FACTOR
RATING*
V
STEAM
USE
SYMBOL/SKETCH
DESCRIPTION
1
3
/ in.
2
/ in.
4
PSI
F
STRAINER: Y-type body with 50 mesh stain-
less steel screen.
Application — Used for removal of small parti-
cles from system water during normal system
operation. Should not be used in lieu of main
system strainers. Strainer screen may have to
be removed during initial high pressure sys-
tem flushing during start-up. Screen should be
removed and cleaned per normal mainte-
nance schedule (provisions for strainer blow-
down not provided).
9.0
19.0
400
200
250
N/A
NO
Clean
Clean
GATE VALVE: Manual shut-off valve.
Application — Used for unit isolation during
system flushing, servicing, etc. Do not use for
water balancing.
19.8
36.0
200
GLOBE VALVE: Standard pattern, manual
shut-off and throttling valve.
Application — Used for unit isolation. Not rec-
ommended for high flow rates due to relatively
high pressure drop.
1.8
2.3
3.9
5.4
200
150
200
200
NO
NO
COMPRESSION STOP VALVE:
Manual shut-off valve.
Application — Used for unit isolation during
system flushing, servicing, etc. Not recom-
mended for high flow rates due to relatively
high pressure drop.
BALL VALVE: Manual balance and shut-off
valve.
Application — Used for unit isolation and
water flow balancing. Without memory stop
feature water balance point must be marked
by installer (if necessary). Check specifica-
tions for service fittings required when used
for water balancing.
4.0
4.0
7.5
7.5
400
400
200
200
YES
N/A
BALL VALVE WITH MEMORY STOP:
Manual balance and shut-off valve.
Application — Used for unit isolation and
water flow balancing. The adjustable memory
stop feature allows return to the balance point
after shut-off. Check specifications for
service fittings required when used for water
balancing.
LEGEND
Cv — Coefficient of Velocity
DX — Direct Expansion
NOTES:
1. Motorized 2-way valves have a maximum close-off differential
of 25 psi.
2. Motorized 3-way valves have a maximum close-off differential
of 10 psi.
*Check all system component pressure ratings (coils, values,
pumps, etc.) with manufacturer and any applicable local or national
piping codes prior to specifying system pressure rating.
52
Download from Www.Somanuals.com. All Manuals Search And Download.
Table 5 — Piping Components (cont)
DESCRIPTION
C FACTOR
RATING*
V
STEAM
USE
SYMBOL/SKETCH
1
3
/ in.
2
/ in.
4
PSI
F
2-WAY MOTORIZED VALVE: Electric 2-position flow
control valve (open/closed). Normally closed body
with manual override lever. Installed in supply line to
unit.
Application — All standard control and valve pack-
ages are based upon normally closed valves (valve
electrically powered open and closed by spring
return when electric power removed). Manual
override lever allows valve to be placed in the open
position for secondary (unit) flushing, constant water
flow prior to start-up, etc. Manual override is auto-
matically disengaged when valve is electrically acti-
vated. Consult factory for normally open valve
applications.
YES
15
2.3
5.0
2.3
5.0
300
200
PSI
MAX.
3-WAY MOTORIZED VALVE: Electric 2-position flow
control valve (closed to coil/open to bypass or open
to coil/closed to bypass). Normally closed with man-
ual override lever. Installed in supply line to unit.
SERVICE
2.8 2.8
Application — Same comments as 2-way motorized
valve except with manual override lever engaged the
valve is open to both ports and water flow will take
the path of least resistance through the valve pack-
age (not necessarily 100% through the coil).
BYPASS
300
200
N/A
MODULATING VALVE (Optional)
(Non-Spring Return, Floating Point Actuator):
Modulating valves are designed to control the flow in
the circuit by making incremental adjustments to the
flow path within the valve.
Application — To control fluid flow in fan coil units.
300
200
N/A
4.0
On the 42DD,SG,SJ,SH commercial fan coil units,
the factory-provided modulating valve has applica-
tion restrictions. In these models, the valve packages
are located in the air stream, downstream of the coil.
Due to the ambient temperature limitations of the
modulating valves, the valves can be used in the
units listed above only with a 2-pipe cooling system.
MODULATING VALVE (Requires ETO [Engineer-
ing to Order])
(Spring Return): Modulating valves are designed to
control the flow in the circuit by making incremental
adjustments to the flow path within the valve.
Application — Same comments as non-spring return
except when powered, the actuator moves to the
desired position, at the same time tensing the spring
return system. When power is removed for more
than two minutes the spring returns the actuator to
the normal position.
4.0
300
200
N/A
AQUASTAT: Water temperature sensing electrical
switch.
1
Application — Clips directly on nominal size / in. or
2
3
/ in. copper tubing for water temperature sensing.
4
Must be correctly located for proper control
operation.
LEGEND
Cv — Coefficient of Velocity
DX — Direct Expansion
NOTES:
1. Motorized 2-way valves have a maximum close-off differential
of 25 psi.
2. Motorized 3-way valves have a maximum close-off differential
of 10 psi.
*Check all system component pressure ratings (coils, values,
pumps, etc.) with manufacturer and any applicable local or national
piping codes prior to specifying system pressure rating.
53
Download from Www.Somanuals.com. All Manuals Search And Download.
IMPORTANT: THE ABOVE CHART IS FOR
REFERENCE ONLY. Check all system component
pressure ratings (coils, valves, pumps, etc.) and any
applicable local or national piping codes prior to
specifying system pressure rating.
JOINT MATERIALS
A
B
C
50-50 Lead-Tin at 200 F
50-50 Lead-Tin at 150 F
50-50 Lead-Tin at 100 F
D
E
F
95-5 Tin-Antimony at 200 F
95-5 Tin-Antimony at 150 F
95-5 Tin-Antimony at 100 F
Note 1
Note 2
NOTES:
1. Not recommended for high system water pressures.
2. Standard factory joint material.
Fig. 49 — Copper Water Tube and Joint Material Pressure Ratings
54
Download from Www.Somanuals.com. All Manuals Search And Download.
Step 3 — Make Electrical Connections — Refer
to unit nameplate for required supply voltage, fan and heater
amperage and required circuit ampacity. Refer to unit wire dia-
gram for unit and field wiring. Make sure all electrical connec-
tions are in accordance with unit wiring diagram and all appli-
cable codes.
The fan motor(s) should never be controlled by any wiring
or device other than the factory-supplied switch or thermostat/
switch combination unless prior factory authorization is
obtained. Fan motor(s) may be temporarily wired for use
during construction only with prior factory approval and only
in strict accordance with the instructions issued at that time.
Floor cabinet type units have factory-wired integral fan
switches. Connect power wires to leads in unit junction box per
unit wiring diagram. On the other units, install remote fan
switch according to job drawings. Hook up switch and power
wiring per unit wiring diagram.
Install optional, wall-mounted thermostat per instructions
shipped with thermostat. Connect as shown on unit wiring
diagram.
Units with factory-supplied and factory-installed aquastats
may be shipped with the aquastats mounted on a coil stub-out.
If this is the case, remove the aquastat before installing valve
package. When reinstalling aquastats, consult the factory-
piping diagram in the submittal for proper location. If the valve
package is field-supplied, the aquastat must be installed in a
location where it will sense the water temperature regardless of
the control valve position. A bleed bypass may be required to
guarantee proper aquastat operation. The aquastat bypass line
allows a small amount of water to flow from the supply to the
return piping when the control valve is closed.
NOTE: The aquastat must be able to sense whether the
flowing water is being chilled or heated and switches a contact
closed to provide automatic summer or winter changeover for
the system. When a two-pipe cooling/heating system with
optional auxiliary electric heat is desired, an additional
aquastat is required.
All field wiring must be in accordance with governing
codes and ordinances. Any modification of unit wiring without
factory authorization will invalidate all factory warranties and
nullify any agency listings.
NOTES:
IMPORTANT: Wiring diagrams shown depict typical
control functions. Refer to unit wiring label for specific
functions.
1. Motors are thermally protected.
2. Use copper conductors only.
3. See unit nameplate for power supply. Provided disconnect
means and overload protection as required.
4. Unit-mounted thermostats are not recommended for fan control
because of poor temperature sensing. Fan control not available
on 42VC,VE lowboy units.
Units may be equipped with line voltage controls or
24 VAC control systems. The following descriptions are for
line voltage controls only. For 24 v control operating sequence,
refer to thermostat operating instructions.
Fig. 50 — Manual Fan Control
STANDARD WIRING PACKAGES
Manual Fan Control — On all vertical cabinet units, the stan-
dard fan-speed switch is furnished unit-mounted and wired.
See Fig. 50. On all vertical furred-in units and all horizontal
units, the switch is shipped separately on a decorative wall
plate for field mounting and wiring.
The standard switch has LOW, MEDIUM, HIGH and OFF
positions plus an auxiliary contact to energize thermostats,
valves, dampers, etc.
NOTE: Wiring diagrams are for 120-v power supply. If other
voltages for heaters or controls are specified, wiring may differ
from that shown.
55
Download from Www.Somanuals.com. All Manuals Search And Download.
Thermostatic Fan Control, 2-Pipe Systems — The thermo-
stat cycles the fan on and off from any selected speed setting to
maintain selected room temperature. Controls can be wired for
heating-only, cooling-only or for heating/cooling by the addi-
tion of an automatic changeover device that senses water tem-
perature and changes the action of the thermostat as required.
See Fig. 51.
Thermostatic Fan Control, 2-Pipe System with Safety
Cycle — This control is used for high humidity situations in
which condensate problems can occur if fan is turned off while
chilled water is still running through the coil.
The wiring provides fan cycling from HIGH to LOW on the
cooling cycle and from LOW to OFF on the heating cycle. An
ON-OFF toggle switch replaces the standard 3-speed fan
switch. The toggle switch can be concealed to ensure that the
unit runs on low speed when cooling. This action greatly
reduces the chance of condensation problems that exist with
other standard fan cycling controls. See Fig. 52.
NOTES:
1. Motors are thermally protected.
2. Use copper conductors only.
3. See unit nameplate for power supply. Provide disconnect
means and overload protection as required.
Fig. 52 — Thermostatic Fan Control
(2-Pipe System with Safety Cycle)
Thermostatic Electric Valve Control, 2-Pipe — A thermo-
statically controlled 2-position valve provides superior control
to fan cycling. With this control, the fan runs continuously un-
less it is manually switched to the OFF position. The fan must
be on before the valve can be opened to supply water to the
coil.
This system can be used for normal 2-pipe changeover
systems and can also be furnished for cooling-only or heating-
only applications by omitting the changeover and specifying
which application is intended. See Fig. 53 and 54 for line volt-
age control. See Fig. 55 and 56 for 24-v control.
NOTES:
1. Motors are thermally protected.
2. Use copper conductors only.
3. See unit nameplate for power supply. Provide disconnect
means and overload protection as required.
4. Unit-mounted thermostats are not recommended for fan control
because of poor temperature sensing. Fan control not available
on 42VC,VE lowboy units.
Fig. 51 — Thermostatic Fan Control
(2-Pipe System)
56
Download from Www.Somanuals.com. All Manuals Search And Download.
120-V WHT ALL OTHERS BLK
NEC CLASS 1 WIRING
a42-4060
Fig. 53 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with
Automatic Changeover — Unit-Mounted Thermostat (Line Voltage)
THERMOSTAT PART # 702893-36
REMOTE DEVICE BOX
UNIT MOUNTED
J BOX
NEC CLASS 1 WIRING
BLK
2
L
RED
BLU
BLK
RED
BLU
4
3
2
1
RED
RISE
1
M
BLOWER
MOTOR
BLU
3
H
BLK
AQUASTAT
VALVE
WHT
COM
*WHT
L2 or N
L1
BLK
2
*WHT
WHT
1
EQUIPMENT
GROUND
ONLY 120V WHT/ALL OTHERS BLK
Fig. 54 — 42C,S,V and 42D (600-1000) 2-Pipe Heating and Cooling with Automatic Changeover —
Remote/Wall-Mounted Thermostat (Line Voltage)
57
Download from Www.Somanuals.com. All Manuals Search And Download.
a42-4059
Fig. 55 — 42SG,SH,SJ,VA,VB,VF 2-Pipe Heating and Cooling with Automatic Changeover —
®
Unit-Mounted Debonair Thermostat (24-v), Duct Sensor
a42-4061
NEC CLASS 2 WIRING
Fig. 56 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling with
®
Automatic Changeover — Remote/Wall-Mounted Debonair Thermostat (24-v)
58
Download from Www.Somanuals.com. All Manuals Search And Download.
Thermostatic 2-Pipe Auxiliary Electric Heat with Valve
Control — This system, also called twilight or intermediate
season electric heat, goes a long way towards solving the
spring and fall control problems of 2-pipe systems.
Chilled water can be run late into the fall, turned on early in
the spring and heat will still be available to all units whenever
required.
In winter the system is switched over to hot water. Two
changeover devices are required for this. One device switches
the action of the thermostat and the other locks out the electric
heat when hot water is in the coil.
With this system, the fan runs continuously unless manually
switched to OFF position. Fan must be on before thermostat
can send signal to open chilled water valve or turn on electric
heater.
Two control methods are available:
1. Use the standard automatic changeover thermostat with a
dead band between heating and cooling.
2. Use a manual changeover thermostat. With this method
only one changeover is required.
Be sure to include a 2-way or 3-way electric valve with this
system.
NOTE: Wiring diagrams are for 120-v power supply. If other
voltages for heaters or controls are specified, wiring may differ
from that shown. See Fig. 57 and 58 for line voltage control.
See Fig. 59 and 60 for 24-v control.
a42-4066
120-V WHT ALL OTHERS BLK
NEC CLASS 1 WIRING
Fig. 57 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with Auxiliary Heat —
Unit-Mounted Thermostat (Line Voltage)
59
Download from Www.Somanuals.com. All Manuals Search And Download.
THERMOSTAT PART # 702893-36
REMOTE DEVICE BOX
UNIT MOUNTED
J BOX
AQUASTATS
RISE
QUICK CONNECT
OPTIONAL
BRN
PUR
BLK
RED
BLU
L
RED
RED
BLU
M
H
BLU
BLK
BLOWER
MOTOR
BLK
BLK
RED
BLU
WHT
COM
*WHT
*WHT
RED
BRN
RISE
VALVE
EQUIPMENT
GROUND
L2 or N
L1
BLK
RED
WHT
*WHT
CONTACTOR
1
*WHT
LIMIT SWITCH
BLK
BLK
BLK
*WHT
ONLY 120V WHT/ALL OTHERS BLK
Fig. 58 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling with
Auxiliary Heat — Remote/Wall-Mounted Thermostat (Line Voltage) and Dual Power Source
THERMOSTAT #33CSSN2-FC
RS+5 RS
R
G
Y1 G3 W1 G2
C
H2O CK1
DUCT SENSOR 33CSSEN-DS
RED
WHT
BLK
CHANGE OVER
SENSOR
BLK
BLK
VALVE
BLK
2
Q/C
1
YEL
BLK
33
QUICK CONNECT
RED
BLU
BLK
G
FAN
BLK
G2/(W)
G3/(Y)
COM
(VALVE)
(COOL)
(HEAT)
RED
BLU
RED
L
4
BLU
BLK
M
3
2
BLOWER
MOTOR
HI
BLK
H
*WHT
WHT
COM
ORG
YEL
MED
1
24
TRANSFORMER
BLK WHT/RED
LOW
EQUIPMENT
GROUND
BLK
*WHT
BLK
*WHT
L1
L2 or N
YEL
0
1
YEL
06
NC
3
7
BLK
LIMIT SWITCH
BLK
COM8
L1
N
4
2
NO
6
BLK
WHT
CONTACTOR
EQUIPMENT
GROUND
ELEC. HEATER
Fig. 59 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with Auxiliary Heat —
®
Unit-Mounted Debonair Thermostat (24-v), Duct Sensor and Dual Power Source
60
Download from Www.Somanuals.com. All Manuals Search And Download.
a42-4067
NEC CLASS 2 WIRING
Fig. 60 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling with
®
Auxiliary Heat — Remote/Wall-Mounted Debonair Thermostat (24-v)
Thermostat 2-Pipe Total Electric Heat with Valve Con-
Normally, an automatic changeover thermostat with a dead
band between heating and cooling is used, but a manual
changeover thermostat is also suitable. A 2-way or 3-way valve
must also be used so that the chilled water is off whenever the
heater is on. No changeover device to sense water temperature
is necessary.
trol — With this system, the complete heating requirement for
the space is provided by the electric heater; the water system is
never changed over for heating. It is therefore possible, just as
with 4-pipe systems, to have heating or cooling at any time of
the year.
The fan runs continuously unless it is manually switched to
OFF position. Fan must be on before thermostat can send
signal to open chilled water valve or turn on electric heater.
NOTE: Wiring diagrams are for 120-v power supply. If other
voltages for heaters or controls are specified, wiring may differ
from that shown. See Fig. 61 and 62 for line voltage control.
See Fig. 63 and 64 for 24-v control.
61
Download from Www.Somanuals.com. All Manuals Search And Download.
a42-4073
120-V WHT ALL
OTHERS BLK
NEC CLASS 1 WIRING
Fig. 61 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Cooling with Total Electric Heat —
Unit-Mounted Thermostat (Line Voltage)
Fig. 62 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Cooling with Total Electric Heat —
Remote/Wall-Mounted Thermostat (Line Voltage)
62
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTE: Units may have 2 or 4
elements. Elements wired in
parallel.
a42-4072
Fig. 63 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Cooling with Total Electric Heat —
®
Unit-Mounted Debonair Thermostat (24-v) and Duct Sensor
THERMOSTAT #33CSSN2-FC
REMOTE DEVICE BOX
RS+5 RS
R
G
Y1 G3 W1 G2
C
H2O CK1
NEC CLASS 2 WIRING
VALVE
COOL
BLK
BLK
2
Q/C
1
YEL
33ZCRLYBRD
QUICK CONNECT
G
FAN
G2/(W)
G3/(Y)
COM
BLK
HI
YEL
(VALVE)
(COOL)
(HEAT)
RED
BLU
RED
BLU
L
4
3
2
1
M
BLOWER
MOTOR
BLK
BLK
H
*WHT
WHT
COM
ORG
YEL
MED
24
TRANSFORMER
BLK WHT/RED
LOW
EQUIPMENT
GROUND
BLK
L1
*WHT
*WHT
L2 or N
0
3
1
7
YEL
BRN
06
NC
EQUIPMENT
GROUND
LIMIT SWITCH
BLK
4 COM 8
NO
BLK
L1
2
6
BLK
WHT
N
ELEC. HEATER
Fig. 64 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Cooling with Total Electric Heat —
®
Remote/Wall-Mounted Debonair Thermostat (24-v) and Dual Power Source
63
Download from Www.Somanuals.com. All Manuals Search And Download.
Thermostatic Valve Control, 4-Pipe — The 4-pipe system
provides the ultimate in economy and room temperature con-
trol. Both hot water and chilled water are available at any time.
Normally an automatic changeover thermostat is used, but a
manual changeover thermostat is also suitable. Two 2-way
valves, two 3-way valves, or one 2-way plus one 3-way valve
must be selected. An automatic changeover device to sense
water temperature is not required.
With this system, the fan runs continuously unless it is
manually switched to OFF position. Fan must be on before
thermostat can send signal to open the chilled water or hot
water valve.
NOTE: Wiring diagrams are for 120-v power supply. If other
voltages for heaters or controls are specified, wiring may differ
from that shown. See Fig. 65 and 66 for line voltage control.
See Fig. 67 and 68 for 24-v control.
a42-4079
120-V WHT ALL OTHERS BLK
NEC CLASS 1 WIRING
Fig. 65 — 42SG,SH,SJ,VA,VB,VC,VE,VF 4-Pipe Heating and Cooling —
Unit-Mounted Thermostat (Line Voltage)
64
Download from Www.Somanuals.com. All Manuals Search And Download.
ONLY 120V WHT/ALL
OTHERS BLK
Fig. 66 — 42C,S,V (except VG), and 42D (600-1000 cfm) 4-Pipe Heating and Cooling —
Remote/Wall-Mounted Thermostat (Line Voltage)
a42-4078
Fig. 67 — 42SG,SH,SJ,VA,VB,VC,VE,VF 4-Pipe Heating and Cooling —
®
Unit-Mounted Debonair Thermostat (24-v) and Duct Sensor
65
Download from Www.Somanuals.com. All Manuals Search And Download.
THERMOSTAT #33CSSN2-FC
REMOTE DEVICE BOX
RS+5 RS
R
G
Y1 G3 W1 G2
C
H2O CK1
NEC CLASS 2 WIRING
VALVE
COOL
PUR
YEL
BLK
BLK
2
Q/C
1
33ZCRLYBRD
QUICK CONNECT
G
FAN
BLK
VALVE
HEAT
G2/(W)
G3/(Y)
COM
BLK
BLK
BRN
YEL
2
Q/C
1
YEL
(VALVE)
(COOL)
(HEAT)
RED
BLU
L
RED
BLU
4
3
2
1
M
BLOWER
MOTOR
HI
BLK
H
BLK
YEL
YEL
WHT
COM
MED
24
TRANSFORMER
LOW
EQUIPMENT
GROUND
BLK
*WHT
BLK
*WHT
L1
L2 or N
Fig. 68 — 42C,S,V (except VG), and 42D (600-1000 cfm) 4-Pipe Heating and Cooling —
®
Remote/Wall-Mounted Debonair Thermostat (24-v)
Do not secure wallboard to drain pan edges or to control
Step 4 — Make Duct Connections — Install all
box enclosure. Condensate leaks or electrical shorts may result.
ductwork to and from unit in accordance with all applicable
codes. Duct construction must allow unit to operate within duct
external static pressure limits as shown on job submittals. Units
designed to operate with ductwork may be damaged if operated
without intended ductwork attached.
An alternate method of enclosing the unit is to frame one or
more sides with studding and apply the wall board to this fram-
ing. This method requires specific unit features and return ac-
cess panels when used on the return-air side of a unit. Units not
properly equipped will exhibit poor cooling and/or heating per-
formance and could experience excessive or premature compo-
nent failures.
Units provided with outside air should have some method
of low-temperature protection to prevent freeze-up.
Insulate ductwork as required. Use flexible connections to
minimize duct-to-unit alignment problems and noise transmis-
sion where specified.
Prevent sheetrock dust or other debris from settling on coil
fins, motor-blower assembly or other unit interior surfaces.
Return access and exposed cabinet units may be furnished
with a baked enamel finish. Small scratches in this finish may
be repaired with touch-up paint available from the factory.
Some colors of touch-up paint are available in aerosol contain-
ers and all touch-up paint is available in pint, quart, and gallon
cans.
To repaint the factory-baked enamel, the finish should be
prepared by light sanding with no. 280 grit sand paper or
no. 000 or no. 0000 fine steel wool. The surface may also be
wiped with a liquid surface etch cleaning product such as “No
Sand” or “Pasceo.” These items should be available at most
paint product stores. It should be noted that the more conscien-
tiously this preparation is done, the more effective it will be.
After this preparation is accomplished, the factory finish
should provide excellent adhesion for a variety of air-dried top
coats. Enamel will give a more durable, higher gloss finish,
while latex will not adhere as well and will give a dull, softer
finish. Top coats involving an exothermic chemical process be-
tween two components, such as epoxies and urethanes, should
be avoided.
Set unit markings for minimum clearance to combustible
materials and first 3 ft of ductwork. Install ductwork, accessory
grilles and plenums so that they do not restrict access to filter.
Cut openings for supply-air and return-air grilles, thermostats
and switch plates where specified on job drawings. Be careful
not to cut wires, piping or structural supports. Use a steel ther-
mostat shield ring to protect drywall from thermostat wiring
where applicable.
CAUTION
Prevent dust and debris from settling in unit. If wall finish
or color is to be spray applied, cover all openings to pre-
vent spray from entering unit. Failure to do so could result
in the reduction of unit efficiency.
Step 5 — Frame and Finish Unit — Models 42SG,
SH and SJ have factory enclosures and may be finished with
normally accepted wall covering. However, drywall secured
with adhesive bonding alone is not recommended.
Use low-profile sheet metal panhead screws to secure
wallboard to unit frame.
Do not apply sheet metal screw or nails where they can pen-
etrate coil, riser pipes, or electrical junction box and raceways.
Factory aerosol touch-up paint may require a number of
light “dust coats” to isolate the factory-baked enamel finish
from the quick drying touch-up paint.
66
Download from Www.Somanuals.com. All Manuals Search And Download.
there is no flow through valve. Ball valves may be
used as shutoff valves.
Step 6 — Cut out Openings for Grilles and
Thermostats — On all units with optional supply-air or
return-air grilles, dampers, thermostats, and switch plates, cut
out openings where specified on the job plans. Be careful not to
cut wires, piping or structural supports.
For remote-mounted thermostats use a steel thermostat
shield ring to protect drywall from thermostat wiring where
applicable.
START-UP
Start-up procedures vary depending on time of year (sum-
mer or winter) and building characteristics (new building/old
building, occupied/unoccupied, etc.)
Start-up in the cooling mode requires that proper care be
given to avoid condensation problems. Condensation forms on
surfaces that are colder than the dew point of the surrounding
air. If a unit is started and is piped with low-temperature chilled
water in a hot, humid atmosphere, condensation will form on
many parts of the unit. In order to avoid excessive condensa-
tion, higher temperature water should initially be used (approx-
imately 65 to 70 F) and set the fan coil control at low or medi-
um fan speed. Be sure the fan current does not exceed motor
nameplate values. Also, the building should be as completely
closed as possible and outside air supply fans, and bathroom
and kitchen exhaust fans should be off.
As the building temperature drops, the chilled water temper-
ature can be gradually reduced until it reaches 50 F. At this
point the outside air fans can be turned on. When the chilled
water temperature is reduced to its design point, the exhaust
fans can be turned on.
Prevent dirt, dust, and debris from settling in unit. If wall
finish or color is to be spray applied, cover all openings to
prevent overspray entering unit.
Step 7 — Make Final Preparations
1. Turn off power to the unit (open unit electrical disconnect).
2. Install thermostats and perform any other final wiring as
applicable.
3. Clean dirt, dust, and other construction debris from unit
interior. Be sure to check fan wheel and housing.
4. Rotate fan wheel by hand to be sure it is free and does not
rub housing. Check that wing nuts securing fan assembly
to fan deck are tight.
5. Ensure all panels and filters are installed before checking
fan operation. Turn on power to the unit.
6. Install filter in frame at front of coil. If field-supplied
filters are used, be sure size is as specified in Tables 1-4.
SERVICE
IMPORTANT: Do not start up or operate unit without
filter. Be sure filter and unit interior are clean.
Excessive Condensation on Unit — Running chilled
water through a fan coil unit with the unit fan off can cause
excessive condensation. If fan cycling is used, a water flow
control valve should be installed to shutoff the water when the
fan stops.
Other methods of control, which avoids condensation prob-
lems, are as follows:
1. Continuous fan operation with motorized chilled water
valve controlled by a thermostat.
2. Continuous fan operation with thermostat control to
switch fan from high to low speed (instead of off).
7. Check the fan and motor operation. The fan switch is
located in a switch box behind spring-loaded access door
on unit cabinet or is wall-mounted. Speeds are marked on
switch plate as follows:
OFF
H - High Speed
M - Medium Speed
L - Low Speed
Rotate knob clockwise to desired speed. To turn off,
rotate knob counterclockwise to OFF.
8. Be sure drain line is properly and securely positioned and
that the line is clear. Pour water into drain to check
operation.
To Clean Coil
1. Be sure electrical service switch is open, locked, and
tagged while working on unit.
2. Remove return-air grille access panel and brush between
coil fins with stiff wire brush. Follow-up by cleaning with
vacuum cleaner. If coil is cleaned with air hose and
nozzle, take care not to drive dirt and dust into other
components.
3. Install clean filter. Refer to Clean or Replace Air Filters
section.
9. Vent all air from unit coil and related piping. If air vent is
manual, release air from system by turning air vent
1
screw 1 / turns counterclockwise with screwdriver.
2
When steady steam of water begins to escape, close
valve. If air vent is automatic, trapped air will be vented
automatically. Vent release air slowly, usually dripping
water into drain pan in the process.
Coil Air Vent (Manual or Automatic) — Turn vent
cap clockwise (closed) while filling system; turn counterclock-
wise (open) to vent air. Tighten clockwise after venting. Turn
automatic vent cap slightly counterclockwise until water leaks
at about 10 drops per minute. Leak will stop within one-half
minute.
Make sure all service valves are open and that the motor-
ized control valves, if supplied, are set for automatic
operation.
10. Check all control valves in the system for proper opera-
tion in accordance with valve manufacturer's instructions.
Check Drain — Lock open and tag unit electrical service
11. For units with factory-installed balancing valves, adjust
as follows:
switch.
Check drain pan, drain line and trap at start of each cooling
a. Butterfly Valves — Turn valve gate by inserting
screwdriver into slot in valve top and rotating up
to 90 degrees. Valve is fully open when slot is par-
allel with valve body. When slot is perpendicular
to body, flow through valve is at minimum. Valve
does not seal against flow.
3
season. A standard type pipe cleaner for / -in. ID pipe can be
4
used to ensure that pipe is clear of obstruction so that conden-
sate is carried away. Check the drain line at filter cleaning time
during the cooling season. Be sure that debris has not fallen
into unit through supply-air grille.
a. Ball Valves with Lever Handles — Valve gate
action is similar to butterfly valves above except
that when handle is perpendicular to valve body,
Fan Motor Bearings — Lock open and tag unit electri-
cal service switch.
67
Download from Www.Somanuals.com. All Manuals Search And Download.
Standard motors are permanently sealed and lubricated. No
lubrication is required unless special motors have been
supplied or unusual operating conditions exist.
After proper airflow and supply power are assured, regular
filter maintenance is important to provide clean air over the
heater. Dirt that is allowed to deposit on the heating element
will cause hot spots and eventual element burn through. These
hot spots will normally not be enough to trip the high-limit
thermal cutout device and may not be evident until actual heat-
er element failure.
Clean Fan Wheel — Lock open and tag unit electrical
service switch.
For access to fan assembly, remove front or bottom panel.
Fan assembly may be removed from its tracks if unit has a long
conduit lead. Use a stiff brush or vacuum to remove dirt and
debris from scroll. Wipe all fan surfaces with a damp cloth.
Clean or Replace Air Filters — Lock open and tag
unit electrical service switch.
At the start of each cooling season and after each month of
operation (more or less depending on operating conditions) re-
place throwaway filter or clean permanent filter.
THROWAWAY FILTER — Replace filter with a good qual-
ity filter of the size shown in Tables 1-4. Do not attempt to
clean and reuse disposable filters.
PERMANENT FILTER (FIBERGLASS TYPE)
1. Tap on solid surface to dislodge heavy particles.
2. Wash in hot water. If needed, use mild solution of com-
mercial solvent such as sal soda or trisodium phosphate.
3. Set filter on end so that water drains out through slots in
frame. Allow filter to dry thoroughly.
4. Recharge filter with Film-Cor or similar recharging oil.
Three ounces is sufficient for medium size filter. Oil may
be applied by insect spray gun. For easier spraying, the oil
can be warmed.
If the filter is dipped in the recharging oil, remove it im-
mediately and allow draining through slots in frame.
5. Replace filter in unit.
Clean Electric Heater — Lock open and tag unit elec-
trical service switch.
1. Remove dust, dirt, or foreign material before start-up. Do
not block normal airflow to and from units; blockage may
damage electric heaters.
2. Clean heater elements with soft brush or vacuum cleaner
as necessary.
3. To replace blown fusible links (nichrome heaters only):
a. Remove fan deck (horizontal units only) for
access to heater.
b. Remove nut securing link at each end; install new
link; reinstall nuts.
c. Reinstall fan deck (if removed).
Electric resistance heaters typically require no normal peri-
odic maintenance when unit air filters are changed properly.
The operation and service life may be affected by other condi-
tions and equipment in the system. The two most important op-
erating conditions for an electric heater are proper airflow and
proper supply voltage. High supply voltage and/or poorly dis-
tributed or insufficient airflow over the element will result in
element overheating. This condition may result in the heater
cycling on the high-limit thermal cutout. The high-limit ther-
mal cutout device is a safety device only and is not intended for
continuous operation. With proper unit application and opera-
tion, the high-limit thermal cutout will not operate. This device
only operates when a problem exists, and ANY condition that
causes high-limit cutout MUST be corrected immediately.
High supply voltage also causes excessive amperage draw and
may trip the circuit breaker or blow the fuses on the incoming
power supply.
If another type of filter is used, follow the filter manufacturer's
instructions.
Warranty — All equipment and components sold through
the Parts Department are warranted under the same conditions
as the standard manufacturer's warranty with the exception that
the warranty period is thirty (30) days unless the component is
furnished as a warranty replacement. Parts furnished as war-
ranty replacements are warranted for the remaining term of the
original unit warranty or not less than thirty (30) days.
68
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
Copyright 2009 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53420004-01
Printed in U.S.A.
Form 42-3SI
Pg 70
12-09
Replaces: 42-2SI
Download from Www.Somanuals.com. All Manuals Search And Download.
START-UP CHECKLIST FOR 42C,D,S,V SERIES FAN COIL AIR CONDITIONERS
I. Project Information
Job Name _______________________________________________________________________
Address ________________________________________________________________________
City ______________________________________________State __________ Zip __________
Installing Contractor _______________________________________________________________
Sales Office _____________________________________________________________________
Start-up Performed By _____________________________________________________________
INSPECTION, INSTALLATION, AND START-UP CHECKLIST
ITEM
COMPLETE
ITEM
COMPLETE
Receiving & Inspection
Electrical Connections
1. Unit received undamaged
33. Refer to unit wiring diagram
2. Unit received complete as ordered
3. “Furnish only” parts accounted for
4. Unit arrangement/hand correct
5. Unit structural support complete and correct
Handling & Installation
34. Connection incoming power service(s)
35. Install and connection “furnish only” parts
36. All field wiring in code compliance
Unit Start-Up
37. General visual unit and system inspection
38. Check for proper fan rotation
39. Record electrical supply voltage
40. Record ambient temperatures
41. Check all wiring for secure connections
42. Close all unit isolation valves
43. Flush water systems
44. Fill systems with water/refrigerant
45. Vent water systems as required
46. All ductwork and grilles in place
47. All unit panels and filters in place
48. Start fans, pumps, chillers, etc.
49. Check for overload condition of all units
50. Check all ductwork and units for air leaks
51. Balance air systems as required
52. Record all final settings for future use
53. Check piping and ductwork for vibration
54. Check all dampers for proper operation
55. Verify proper cooling operation
56. Verify proper heating operation
57. Reinstall all covers and access panels
6. Mounting grommets/isolators used
7. Unit mounted level and square
8. Proper access provided for unit and accessories
9. Proper electrical service provided
10. Proper overcurrent protection provided
11. Proper service switch/disconnect provided
12. Proper chilled water line size to unit
13. Proper hot water line size to unit
14. Proper refrigerant line sizes to unit
15. Proper steam line sizes to unit
16. Proper steam condensate trap on return line
17. Proper steam supply pressure to unit (10 psi max)
18. All service to unit in code compliance
19. All shipping screws and braces removed
20. Unit protected from direct & foreign matter
Cooling/Heating Connections
21. Protect valve package components from heat
22. Mount valve packages
23. Connect field piping to unit
24. Pressure test all piping for leaks
25. Install drain line and traps as required
26. Insulate all piping as required
27. Install drip lip under piping as required
Ductwork Connections
28. Install ductwork, fittings, and grilles as required
29. Flexible duct connections at unit
30. Proper supply and return grille type and size used
31. Control outside air for freeze protection
32. Insulate all ductwork as required
CL-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Copyright 2009 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53420004-01
Printed in U.S.A.
Form 42-3SI
CL-2
12-09
Replaces: 42-2SI
Download from Www.Somanuals.com. All Manuals Search And Download.
|
Black Decker Saw 7662 User Manual
Blue Rhino Gas Grill NSG3902D User Manual
Bogen Car Speaker WB1EZ User Manual
Bose Speaker System 901 Series II User Manual
Brilliant Label Flat Panel Television 532H User Manual
Broan Ventilation Hood AP1 User Manual
Bush Hog Lawn Mower ATH 720 User Manual
Canon Digital Camera 300V, 300V Date User Manual
Canon Projector SX60 User Manual
Cecilware Coffeemaker FE 100G User Manual