installation, start-up
559F
Sizes 180-300
15 to 25 Tons
and service instructions
SINGLE PACKAGE ROOFTOP
ELECTRIC HEATING/ELECTRIC COOLING UNITS
Cancels: II 559F-180-3
II 559F-180-4
10/15/98
CONTENTS
INSTALLATION
I. STEP 1 — PROVIDE UNIT SUPPORT
A. Roof Curb
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
I. Step 1 — Provide Unit Support . . . . . . . . . . . . . . . 1
II. Step 2 — Rig and Place Unit . . . . . . . . . . . . . . . . . 1
III. Step 3 — Field Fabricate Ductwork . . . . . . . . . . . . 7
IV. Step 4 — Make Unit Duct Connections . . . . . . . . . 7
V. Step 5 — Trap Condensate Drain . . . . . . . . . . . . . . 7
VI. Step 6 — Make Electrical Connections . . . . . . . . . 8
VII. Step 7 — Make Outdoor-Air Inlet
Assemble and install accessory roof curb or horizontal adapter
roof curb in accordance with instructions shipped with the
curb or horizontal adapter. Accessory roof curb and horizon-
tal adapter roof curb and information required to field fabri-
cate a roof curb or horizontal adapter roof curb are shown in
Fig. 1 and 2. Install insulation, cant strips, roofing, and counter
flashing as shown. Ductwork can be secured to roof curb be-
fore unit is set in place.
Adjustments . . . . . . . . . . . . . . . . . . . . . . 11
VIII. Step 8 — Install Outdoor-Air Hood . . . . . . . . . . . 12
IX. Step 9 — Install All Accessories . . . . . . . . . . . . . 13
IMPORTANT: The gasketing of the unit to the roof curb or
adapter roof curb is critical for a leak-proof seal. Install gas-
ket supplied with the roof curb or adapter roof curb as shown
in Fig. 1. Improperly applied gasket can result in air leaks
and poor unit performance.
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-20
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-24
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1
Curb or adapter roof curb should be level. This is necessary
to permit unit drain to function properly. Unit leveling toler-
1
ance is Ϯ ⁄16 in. per linear ft in any direction. Refer to Ac-
cessory Roof Curb or Horizontal Adapter Roof Curb Installa-
tion Instructions for additional information as required.
B. Alternate Unit Support
SAFETY CONSIDERATIONS
When the curb or adapter cannot be used, support unit with
sleepers using unit curb or adapter support area. If sleepers
cannot be used, support long sides of unit with a minimum of
3 equally spaced 4-in. x 4-in. pads on each side.
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe pre-
cautions in the literature, tags and labels attached to the unit,
and other safety precautions that may apply.
II. STEP 2 — RIG AND PLACE UNIT
Inspect unit for transportation damage. File any claim with
transportation agency. Keep unit upright, and do not drop.
Use spreader bars over unit to prevent sling or cable dam-
age. Rollers may be used to move unit across a roof. Level by
using unit frame as
Ϯ ⁄16 in. per linear ft in any direction. See Fig. 3 for addi-
a
reference; leveling tolerance is
1
Follow all safety codes. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire ex-
tinguishers available for all brazing operations.
tional information. Unit weight is shown in Table 1.
Four lifting holes are provided in ends of unit base rails as
shown in Fig. 3. Refer to rigging instructions on unit.
WARNING: Before performing service or mainte-
nance operations on unit, turn off main power switch
to unit. Electrical shock could cause personal injury.
A. Positioning
Provide clearance around and above unit for airflow, safety,
and service access (Fig. 4 and 5).
Do not install unit in an indoor location. Do not locate air in-
lets near exhaust vents or other sources of contam-
inated air.
IMPORTANT: Units have high ambient operating limits. If
limits are exceeded, the units will automatically lock the com-
pressor out of operation. Manual reset will be required to re-
start the compressor.
Although unit is weatherproof, guard against water from higher
level runoff and overhangs.
B. Roof Mount
Check building codes for weight distribution requirements.
NOTES:
PKG.
CURB
1. Roof curb accessory is shipped disassembled.
DESCRIPTION
NO. REF.
HEIGHT
1
2. Insulated panels:
3. Dimensions in ( ) are in millimeters.
⁄
2Љ thick neoprene coated 2 lb density.
1Ј-2Љ
Standard Curb
3
3
3
Fig. 1 — Roof Curb Details
STD UNIT
WEIGHT
ECONOMIZER
WEIGHT
CORNER
A
CORNER
B
CORNER
C
CORNER
D
DIM A
DIM B
DIM C
UNIT
Lb
Kg
Lb
110
110
Kg
50
50
Lb
391 177 365 166 384 174 410 186 3-5 1041 3-6 1067 1-10 559
399 181 384 174 402 182 439 199 3-4 1016 3-6 1067 1- 508
Kg
Lb
Kg
Lb
Kg
Lb
Kg ft-in. mm ft-in. mm ft-in. mm
559F180
559F216
1550
1650
703
748
8
NOTES:
1. Refer to print for roof curb accessory dimensions.
2. Dimensions in ( ) are in millimeters.
3.
Center of Gravity.
4.
Direction of airflow.
5. Ductwork to be attached to accessory roof curb only.
6. Minimum clearance:
•
Rear: 7Ј-0Љ (2134) for coil removal. This dimension can be reduced to 4Ј-0Љ (1219)
if conditions permit coil removal from the top.
•
•
•
Left side: 4Ј-0Љ (1219) for proper condenser coil airflow.
Front: 4Ј-0Љ (1219) for control box access.
Right side: 4Ј-0Љ (1219) for proper operation of damper and power exhaust if so
equipped.
Top: 6Ј-0Љ (1829) to assure proper condenser fan operation.
Local codes or jurisdiction may prevail.
•
•
7. With the exception of clearance for the condenser coil and the damper/power ex-
haust as stated in Note #6,
clearance.
a
removable fence or barricade requires no
POWER EXHAUST/
BAROMETRIC RELIEF
(ACCESSORY ONLY)
8. Dimensions are from outside of corner post. Allow 0Ј-5⁄16Љ (8) on each side for top
cover drip edge.
Fig. 4 — Base Unit Dimensions, 559F180 and 216
STD UNIT ECONOMIZER CORNER CORNER CORNER CORNER
WEIGHT WEIGHT
DIM A
DIM B
DIM C
A
B
C
D
UNIT
Lb Kg
Lb
Kg
50
50
Lb Kg Lb Kg Lb Kg Lb Kg ft-in. mm ft-in. mm ft-in. mm
559F240 1700 771
559F300 1850 839
110
110
419 190 394 179 425 193 463 210 3-4 1016 3-5 1041 1-8 508
428 194 412 187 511 232 499 226 3-2
965
3-7 1092 1-8 508
NOTES:
1. Refer to print for roof curb accessory dimensions.
2. Dimensions in ( ) are in millimeters.
3.
Center of Gravity.
4.
Direction of airflow.
5. Ductwork to be attached to accessory roof curb only.
6. Minimum clearance:
•
Rear: 7Ј-0Љ (2134) for coil removal. This dimension can be reduced to 4Ј-0Љ (1219)
if conditions permit coil removal from the top.
•
•
•
Left side: 4Ј-0Љ (1219) for proper condenser coil airflow.
Front: 4Ј-0Љ (1219) for control box access.
Right side: 4Ј-0Љ (1219) for proper operation of damper and power exhaust if so
equipped.
Top: 6Ј-0Љ (1829) to assure proper condenser fan operation.
Local codes or jurisdiction may prevail.
•
•
7. With the exception of clearance for the condenser coil and the damper/power ex-
haust as stated in Note #6,
clearance.
a
removable fence or barricade requires no
POWER EXHAUST/
BAROMETRIC RELIEF
(ACCESSORY ONLY)
8. Dimensions are from outside of corner post. Allow 0Ј-5⁄16Љ (8) on each side for top
cover drip edge.
Fig. 5 — Base Unit Dimensions, 559F240 and 300
Table 1 — Physical Data
UNIT 559F
180
15
216
18
240
20
300
25
NOMINAL CAPACITY (tons)
OPERATING WEIGHT
COMPRESSOR
1550
1650
1700
1850
Scroll, Copeland
Quantity ... Model (Ckt 1 , Ckt 2)
1...ZR108KC,
1...ZR94KC
2
1...ZR125KC,
1...ZR108KC
2
1...ZR16M3,
1...ZR125KC
2
2...ZR94KC
Number of Refrigerant Circuits
Oil (oz) (Ckt 1 , Ckt 2)
2
81, 81
106,81
106, 106
136, 106
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb-oz)
Circuit 1 *
R-22
TXV
10-10
10-10
15-5
12-3
3
16-0
13-6
20-13
13- 0
Circuit 2
CONDENSER COIL
Cross-Hatched
⁄
8-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
Rows...Fins/in.
Total Face Area (sq ft)
2...17
21.7
3...15
21.7
3...15
21.7
4...15
21.7
CONDENSER FAN
Nominal Cfm
Propeller Type
10,500
10,500
3...22
2...1050
1100
3
14,200
2...30
14,200
2...30
Quantity...Diameter (in.)
Motor Hp...Rpm
3...22
1
1
⁄
2...1050
1100
⁄
1...1075
3400
1...1075
3400
Watts Input (Total)
EVAPORATOR COIL
Cross-Hatched ⁄8-in. Copper Tubes, Aluminum Lanced or
Copper Plate Fins, Face Split
Rows...Fins/in.
Total Face Area (sq ft)
2...17
17.5
3...15
17.5
3...15
17.5
4...15
17.5
EVAPORATOR FAN
Quantity...Size (in.)
Type Drive
Centrifugal Type
2...10 x 10
Belt
2...12 x 12
Belt
2...12 x 12
Belt
2...12 x 12
Belt
Nominal Cfm
6000
7200
5
8000
10,000
10
Motor Hp
Motor Nominal Rpm
Maximum Continuous Bhp
3.7
1725
7.5
1745
1745
1740
8.7 [208/230 v]
9.5 [460 v]
213T
10.2 [208/230 v]
11.8 [460 v]
215T
4.25
5.90
Motor Frame Size
Nominal Rpm High/Low
Fan Rpm Range
56H
—
184T
—
—
—
Low-Medium Static
High Static
891-1179
1227-1550
Ball
910-1095
1069-1287
Ball
1002-1225
1193-1458
Ball
1066-1283
1332-1550
Ball
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
Min/Max (in.)
1550
1550
1550
1550
Low-Medium Static
High Static
3.1/4.1
4.9/5.9
4.9/5.9
11⁄8
5.4/6.6
5.4/6.6
13⁄8
4.9/5.9
4.9/5.9
13⁄8
3.7/4.7
7
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
⁄8
Low-Medium Static
High Static
6.0
5.2
9.4
9.4
8.0
8.0
7.9
6.4
Nominal Fan Shaft Diameter (in.)
Belt, Quantity...Type...Length (in.)
13⁄16
17⁄16
17⁄16
17⁄16
Low-Medium Static
High Static
1...BX...42
1...BX...42
13.5-15.5
48
1...BX...50
1...BX...48
13.3-14.8
37
1...BX...53
1...BX...50
14.6-15.4
37
2...BX...50
2...BX...47
14.6-15.4
36
Pulley Center Line Distance (in.)
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full Turns
From Closed Position
Factory Speed
Factory Speed Setting (rpm)
Low-Medium Static
High Static
55
34
44
45
5
5
5
5
3.5
3.5
3.5
3.5
Low-Medium Static
High Static
1035
1389
13⁄16
1002
1178
17⁄16
1120
1328
17⁄16
1182
1470
17⁄16
Fan Shaft Diameter at Pulley (in.)
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto)
426
320
LOW-PRESSURE SWITCH (psig)
Cutout
Reset (Auto)
27
44
FREEZE PROTECTION THERMOSTAT (F)
Opens
Closes
30 ± 5
45 ± 5
OUTDOOR-AIR INLET SCREENS
Quantity...Size (in.)
Cleanable
2...20 x 25 x 1
1...20 x 20 x 1
RETURN-AIR FILTERS
Quantity...Size (in.)
Throwaway**
4...20 x 20 x 2
4...16 x 20 x 2
1
POWER EXHAUST
LEGEND
⁄
2
Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)
Bhp
TXV
—
—
Brake Horsepower
Thermostatic Expansion Valve
*Circuit 1 uses the lower portion of the condenser coil and lower portion of the evaporator coils; and
Circuit 2 uses the upper portion of both coils.
†The 559F300 unit requires 2-in. industrial-grade filters capable of handling face velocities up to 625 ft/min
(such as American Air Filter no. 5700 or equivalent).
NOTE: The 559F units have a low-pressure switch (standard) located on the suction side.
—6—
III. STEP 3 — FIELD FABRICATE DUCTWORK
IV. STEP 4 — MAKE UNIT DUCT CONNECTIONS
Secure all ducts to building structure. Use flexible duct con-
nectors between unit and ducts as required. Insulate and weath-
erproof all external ductwork, joints, and roof openings with
counter flashing and mastic in accordance with applicable codes.
Unit is shipped for thru-the-bottom duct connections. Duct-
work openings are shown in Fig. 6. Field-fabricated concen-
tric ductwork may be connected as shown in Fig. 7 and 8.
Attach all ductwork to roof curb and roof curb basepans. Re-
fer to installation instructions shipped with accessory roof curb
for more information.
Ducts passing through an unconditioned space must be in-
sulated and covered with a vapor barrier.
The 559F units with electric heat require a 1-in. clearance
for the first 24 in. of ductwork.
V. STEP 5 — TRAP CONDENSATE DRAIN
See Fig. 4, 5, and 9 for drain location. Plug is provided in
drain hole and must be removed when unit is operating. One
Outlet grilles must not lie directly below unit discharge.
3
⁄
4-in. half coupling is provided inside unit evaporator section
NOTE: A 90-degree elbow must be provided in the ductwork
to comply with UL (Underwriters’ Laboratories) codes for use
with electric heat.
for condensate drain connection. An 81⁄2 in. x ⁄4-in. diameter
nipple and a 2-in. x 3⁄4-in. diameter pipe nipple are coupled to
standard
3
3
⁄4-in. diameter elbows to provide a straight path
WARNING: For vertical supply and return units, tools
or parts could drop into ductwork and cause an injury.
Install a 90 degree turn in the return ductwork be-
tween the unit and the conditioned space. If a 90 de-
gree elbow cannot be installed, then a grille of sufficient
strength and density should be installed to prevent ob-
jects from falling into the conditioned space. Due to elec-
tric heater, supply duct will require 90 degree elbow.
down through holes in unit base rails (see Fig. 10). A trap at
least 4-in. deep must be used.
Shaded area indicates block-off panels.
NOTE: Dimension A, AЈ and B, BЈ are obtained from field-supplied ceil-
ing diffuser.
Fig. 8 — Concentric Duct Details
NOTE: Do not drill in this area, as damage to basepan may result in
water leak.
Fig. 6 — Air Distribution — Thru-the-Bottom
(559F216-300 Shown)
3/4" FPT DRAIN
CONNECTION
1-3/8"
DRAIN HOLES
Fig. 9 — Condensate Drain Details
(559F180,216 Shown)
NOTE: Do not drill in this area, as damage to basepan may result in
water leak.
Fig. 7 — Concentric Duct Air Distribution
(559F216-300 Shown)
—7—
This amount of phase imbalance is satisfactory as it is below
the maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is
more than 2%, contact your local electric utility company
immediately.
Unit failure as a result of operation on improper line voltage
or excessive phase imbalance constitutes abuse and may cause
damage to electrical components.
B. Field Control Wiring
Install a Bryant-approved accessory thermostat assembly ac-
cording to the installation instructions included with the ac-
cessory. Locate thermostat assembly on a solid wall in the
conditioned space to sense average temperature.
Fig. 10 — Condensate Drain Piping Details
VI. STEP 5 — MAKE ELECTRICAL CONNECTIONS
Route thermostat cable or equivalent single leads of
no. 18 AWG (American Wire Gage) colored wire from subbase
terminals through conduit in unit to low-voltage connections
as shown on unit label wiring diagram and in Fig. 12.
A. Field Power Supply
Unit is factory wired for voltage shown on nameplate.
When installing units, provide a disconnect, per NEC (Na-
tional Electrical Code) requirements, of adequate size
(Table 2).
NOTE: For wire runs up to 50 ft, use no. 18 AWG insulated
wire (35 C minimum). For 50 to 75 ft, use no. 16 AWG insu-
lated wire (35 C minimum). For over 75 ft, use no. 14 AWG
insulated wire (35
no. 18 AWG cannot be directly connected to the thermostat
and will require a junction box and splice at the thermostat.
C
minimum). All wire larger than
All field wiring must comply with NEC and local
requirements.
Route power lines through control box access panel or unit
basepan (Fig. 4 and 5) to connections as shown on unit wir-
ing diagram and Fig. 11.
Set heat anticipator settings as indicated in Table 3. Settings
may be changed slightly to provide a greater degree of com-
fort for a particular installation.
Operating voltage to compressor must be within voltage range
indicated on unit nameplate. On 3-phase units, voltages be-
tween phases must be balanced within 2% and the current
must be balanced within 10%.
Refer to accessory remote control instructions as
required.
CAUTION: The correct power phasing is critical in
the operation of the scroll compressors. An incorrect phas-
ing will cause the compressor to rotate in the wrong di-
rection. This may lead to premature compressor failure.
Use the following formula to determine the percentage of volt-
age imbalance.
Percentage of Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
EXAMPLE: Supply voltage is 460-3-60.
TB1 MAXIMUM WIRE SIZE
AB = 452 v
BC = 464 v
AC = 455 v
VOLTAGE
UNIT
559F
208/230
460
All
350 kcmil
2/0
452 + 464 + 455
Average Voltage =
3
LEGEND
1371
EQUIP
—
—
—
Equipment
Ground
NEC
—
—
National Electrical
Code
Terminal Block
=
3
GND
kcmil
Thousand Circular
Mils
TB
=
457
Determine maximum deviation from average voltage:
Fig. 11 — Field Power Wiring Connections
(AB) 457 − 452 = 5 v
(BC) 464 − 457 = 7 v
(AC) 457 − 455 = 2 v
Maximum deviation is 7 v.
Determine the percentage of voltage imbalance:
7
Percentage of Voltage Imbalance = 100 x
457
= 1.53%
UNIT LOW-VOLTAGE CONNECTIONS
Fig. 12 — Field Control Thermostat Wiring
—8—
Table 2 — Electrical Data
OFM
COMPRESSOR
No. 1 No. 2
VOLTAGE
RANGE
POWER
ELECTRIC
HEAT*
POWER
SUPPLY
NOMINAL
VOLTAGE
IFM
FLA
UNIT
559F
EXHAUST
(3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA Qty Hp FLA (ea) Hp
FLA LRA kW
FLA
MCA
81/81 100/100
85/86 110/110
102/116 110/125
4.6 18.8 26/34 71/82 108/122 110/125
42/56 117/135 159/149 175/175
4.6 18.8 42/56 117/135 165/155 175/175
56/75 156/180 169/194 200/225
4.6 18.8 56/75 156/180 175/200 200/225
MOCP†
—
—
—
—
—
—
4.6 18.8
—
—
26/34 71/82
208/230
187 253 28.8 195 28.8 195
3
3
3
3
2
2
0.5
0.5
0.5
0.5
1
1.7
0.8
1.7
0.8
6.6
3.3
3.7 10.5/11.0
—
—
—
—
180
(15 Tons)
—
2.3
—
6.0
—
—
—
—
40
43
50
50
—
2.3
—
6.0
32
32
39
39
55
58
60
60
460
414 508 14.7
95 14.7
95
3.7
4.8
—
2.3
—
6.0
55
55
66
66
72
75
80
80
—
2.3
—
6.0
80
80
96
96
102
105
110
110
—
—
—
—
—
—
87/87
92/92
110/110
110/110
4.6 18.8
—
—
26/34 71/82 109/122 110/125
4.6 18.8 26/34 71/82 114/128 125/150
208/230
187 253 30.1 225 28.8 195
5.0 15.8/15.8
—
—
42/56 117/135 166/155 175/175
4.8 18.8 42/56 117/135 172/161 175/175
—
—
56/75 156/180 176/200 200/225
4.6 18.8 56/75 156/180 182/206 200/225
216
(18 Tons)
—
2.3
—
6.0
—
—
—
—
44
47
50
60
—
2.3
—
6.0
32
32
39
39
59
61
60
70
460
414 508 15.5 114 14.7
95
5.0
7.9
—
2.3
—
6.0
55
55
66
66
76
79
90
90
—
2.3
—
6.0
80
80
96
96
106
109
125
125
—
—
—
—
—
—
116/116 150/150
120/120 150/150
4.6 18.8
—
—
26/34 71/82 120/134 150/150
4.6 18.8 26/34 71/82 126/140 150/150
208/230
187 253 37.8 239 30.1 225
7.5 25.0/25.0
—
—
42/56 117/135 178/166 200/175
4.6 18.8 42/56 117/135 183/172 200/175
—
—
56/75 156/180 187/211 200/225
4.6 18.8 56/75 156/180 193/217 200/225
240
(20 Tons)
—
2.3
—
6.0
—
—
—
—
57
59
70
70
—
2.3
—
6.0
32
32
39
39
65
68
70
70
460
414 508 17.2 125 15.5 114
1
7.5
13.0
—
2.3
—
6.0
55
55
66
66
82
85
90
90
—
2.3
—
6.0
80
80
96
96
112
115
125
125
—9—
Table 2 — Electrical Data (cont)
COMPRESSOR
No. 1 No. 2
VOLTAGE
RANGE
POWER
ELECTRIC
HEAT*
POWER
SUPPLY
NOMINAL
VOLTAGE
(3 Ph, 60 Hz)
OFM
IFM
FLA
UNIT
559F
EXHAUST
Min Max RLA LRA RLA LRA Qty Hp FLA (ea) Hp
FLA LRA kW
FLA
MCA
MOCP†
—
—
—
—
—
—
130/130 150/150
135/135 175/175
4.6 18.8
—
—
26/34 71/82 130/138 150/150
4.6 18.8 26/34 71/82 135/143 175/175
208/230
187 253 41.0 350 37.8 239
2
2
1
1
6.6
2.8
10.0 28.0/28.0
—
—
42/56 117/135 181/170 200/175
4.6 18.8 42/56 117/135 187/176 200/200
—
−
56/75 156/180 191/215 200/225
4.6 18.8 56/75 156/180 197/221 200/225
300
(25 Tons)
—
2.3
—
6.0
—
—
—
—
66
68
80
80
—
2.3
—
6.0
32
32
39
39
67
70
80
80
460
414 508 21.8 158 17.2 125
10.0
14.6
—
2.3
—
6.0
55
55
66
66
84
87
90
100
—
2.3
—
6.0
80
80
96
96
114
117
125
125
EXAMPLE: Supply voltage is 460-3-60.
LEGEND
Full Load Amps
FLA
—
—
—
—
—
—
—
—
—
AB = 452 v
BC = 464 v
AC = 455 v
HACR
IFM
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
LRA
452 + 464 + 455
Average Voltage =
MCA
MOCP
NEC
OFM
RLA
Minimum Circuit Amps
3
Maximum Overcurrent Protection
National Electrical Code
1371
=
=
Outdoor (Condenser) Fan Motor
Rated Load Amps
3
457
*Heater capacity (kW) is based on heater voltage of 208 v, 240 v,
and 480 v. Heaters are rated at 240 v and 480 v. If power distribution
voltage to unit varies from rated heater voltage, heater kW will vary
accordingly.
Determine maximum deviation from average voltage.
(AB) 457 − 452 = 5 v
(BC) 464 − 457 = 7 v
(AC) 457 − 455 = 2 v
†Fuse or HACR circuit breaker.
Maximum deviation is 7 v.
NOTES:
Determine percent of voltage imbalance.
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NEC Articles 430 and 440), the overcurrent protective
device for the unit shall be fuse or HACR breaker. The Canadian units
may be fuse or circuit breaker.
7
% Voltage Imbalance = 100 x
457
= 1.53%
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater
than 2%. Use the following formula to determine the percent of voltage
imbalance.
This amount of phase imbalance is satisfactory as it is below the maxi-
mum allowable 2%.
IMPORTANTIf the supply voltage phase imbalance is more than 2%, contact
your local electric utility company immediately.
% Voltage Imbalance =
max voltage deviation from average voltage
3. MCA calculation for units with electric heaters over 50 kW
= (1.25 x IFM amps) + (1.00 x heater FLA).
100 x
average voltage
—10—
VII. STEP 7 — MAKE OUTDOOR-AIR INLET ADJUSTMENTS
A. Manual Outdoor-Air Damper
Table 3 — Heat Anticipator Settings
UNIT
UNIT
559F
kW*
STAGE 1
STAGE 2
VOLTAGES
All units (except those equipped with a factory-installed econo-
mizer) have a manual outdoor-air damper to provide venti-
lation air. Damper can be preset to admit up to 25% outdoor
air into return-air compartment. To adjust, loosen securing
screws and move damper to desired setting. Then retighten
screws to secure damper (Fig. 13).
26/34
42/56
56/75
.40
.66
.66
.66
.40
.66
208/230-3-60
180-300
32
55
80
.40
.40
.66
.40
.66
.66
460-3-60
*Heater kW is based on heater voltage of 208 v, 240 v and 480 v.
B. Optional Economizer
Economizer Motor Control Module (Fig. 14-16)
Set to the ‘‘D’’ setting (Fig. 15). The control module is located
on the economizer motor. See Fig. 14 and 16.
Damper Vent Position Setting
1. Set fan switch at ON position (continuous fan opera-
tion) and close night switch if used.
2. Set system selector switch to OFF position.
3. Turn adjustment screw slowly until dampers assume de-
sired vent position. Do not manually operate economizer
motor since damage to motor will result.
LEGEND
LED
—
Light-Emitting Diode
Fig. 15 — Economizer Control Module
(Part Number W7459A)
Fig. 13 — 25% Outdoor-air Section Details
Fig. 16 — Economizer Control Module Location
Fig. 14 — Economizer Damper Assembly
— End View
—11—
VIII. STEP 8 — INSTALL OUTDOOR-AIR HOOD
BAFFLE (300 ONLY)
The same type of factory-installed hood is used on units with
25% air ventilation and units with an economizer.
NOTE: The hood top panel, upper and lower filter retainers,
hood drain pan, baffle (size 300), and filter support bracket
are secured opposite the condenser end of the unit. The screens,
hood side panels, remaining section of filter support bracket,
seal strip, and all other hardware are in a package located
inside the return-air filter access panel (Fig. 17).
LOWER FILTER
RETAINER
FILTER SUPPORT
BRACKET
1. Attach seal strip to upper filter retainer. See Fig. 18.
2. Assemble hood top panel and side panels, upper filter
retainer, and hood drain pan (Fig. 19).
3. Secure lower filter retainer and long section of filter sup-
port bracket to unit. See Fig. 19. Leave screws loose on
size 300 units.
HOOD SIDE
PANELS (2)
4. Slide baffle (size 300) unit behind lower filter retainer
and tighten screws.
HOOD TOP
PANEL
BAFFLE
(300
ONLY)
5. Loosen sheet metal screws for base unit top panel lo-
cated above outdoor-air inlet opening, and remove screws
for hood side panels located on the sides of the outdoor-
air inlet opening.
6. Match notches in hood top panel to unit top panel screws.
Insert hood flange between unit top panel flange and unit.
Tighten screws.
LOWER
FILTER
RETAINER
FILTER SUPPORT
BRACKET
7. Hold hood side panel flanges flat against unit, and in-
stall screws removed in Step 5.
8. Insert outdoor-air inlet screens and spacer in channel
created by lower filter retainer and filter support bracket.
HOOD DRAIN PAN
UPPER FILTER RETAINER
9. Attach remaining short section of filter support bracket.
NOTE: The outdoor-air hood comes with a baffle which is used on
size 300 units only; discard baffle for 180-240 units.
Fig. 19 — Outdoor-Air Hood Details
A. Enthalpy Control Installation
NOTE: The accessory outdoor-air enthalpy sensor must be
installed BEFORE the economizer hoods are installed on the
unit or hoods will have to be removed.
1. Remove and discard the factory-installed jumper assem-
bly containing the 800-ohm resistor on the economizer
control module (between terminals SR and +). See Fig. 15.
2. Remove black wire assembly containing the 620-ohm re-
sistor from between economizer control module termi-
nal SO and the outdoor-air thermostat (OAT). Place this
wire assembly (containing the 620-ohm resistor) be-
tween economizer control module terminals SR and +,
replacing the jumper removed in Step 1. See Fig. 15.
3. Disconnect the blue wire from the OAT.
Fig. 17 — Outdoor-Air Hood Component Location
4. Remove OAT from the outside of the economizer (see
Fig. 14).
5. Mount the enthalpy sensor (Fig. 20) to the economizer
on the outside of the unit (in the same location from which
the OAT was removed) using the 2 screws provided. See
Fig. 14.
6. Reconnect the blue wire removed in Step 3 to the en-
thalpy sensor terminal +.
7. Cut the violet wire provided to desired length and ter-
minate with quick-connect terminal provided. Route the
violet wire from the enthalpy sensor terminal S, through
the snap bushing, and to the economizer control module
terminal SO. See Fig. 15.
8. Set changeover set point to the desired location.
See Fig. 21.
Fig. 18 — Seal Strip Location (Air Hood Cross-Sectional View)
—12—
NOTE: For maximum benefit of outdoor air, set the enthalpy
control to the ‘‘A’’ setting. At this setting, when the relative
humidity is 50% and the outdoor air is below 74 F, the relay
contacts on the sensor will be closed.
3. Remove OAT and black wire assembly containing the
620-ohm resistor from the outside of the economizer
(see Fig. 14).
4. Mount the outdoor-air enthalpy sensor (first sensor) to
the economizer on the outside of the unit (in the same
location from which the OAT was removed) using the
2 screws provided. See Fig. 14.
9. Reinstall economizer hoods if removed.
IMPORTANT: Be sure all seal strips and RTV sealant are in-
tact. A watertight seal to inside of unit must be maintained.
5. Reconnect the blue wire removed in Step 2 to the en-
thalpy sensor terminal +.
6. Cut the violet wire provided to desired length and ter-
minate with quick-connect terminal provided. Route the
violet wire from the enthalpy sensor terminal S, through
the snap bushing, and to the economizer control mod-
ule terminal SO.
+
7. Mount the second enthalpy sensor in the return-air duct
(return-air sensor).
8. Route the blue wire (provided) from terminal + on the
return-air enthalpy sensor to the economizer control
module terminal +.
9. Route the violet wire (provided) from terminal S on the
return-air enthalpy sensor to the economizer control
module terminal SR.
Fig. 20 — Outdoor-Air and Return-Air
Enthalpy Sensor
10. Turn changeover set point dial clockwise past the ‘‘D’’
setting, or the control will not operate on a differen-
tial. See Fig. 15.
CONTROL POINT
CONTROL
(Approx Deg)
CURVE
AT 50% RH
11. Reinstall economizer hood if removed.
A
B
C
D
IMPORTANT: Be sure all seal strips and RTV sealant are in-
tact. A watertight seal to inside of unit must be maintained.
IX. STEP 9 — INSTALL ALL ACCESSORIES
After all the factory-installed options have been adjusted, in-
stall all field-installed accessories. Refer to the accessory in-
stallation instructions included with each accessory.
A. Motormasterா I Control Installation (559F180 and 216)
Install Field-Fabricated Wind Baffles
Wind baffles must be field-fabricated for all units to ensure
proper cooling cycle operation at low ambient temperatures.
See Fig. 22 for baffle details. Use 20-gage, galvanized sheet
metal, or similar corrosion-resistant metal for baffles. Use field-
supplied screws to attach baffles to unit. Screws should be
1
5
⁄
4-in. diameter and ⁄8-in. long. Drill required screw holes for
mounting baffles.
CAUTION: To avoid damage to the refrigerant coils
and electrical components, use recommended screw sizes
only. Use care when drilling holes.
Install Motormaster I Controls
RH
—
Relative Humidity
Fig. 21 — Psychrometric Chart for Solid-State
Enthalpy Control
Only one Motormaster I control is required per unit. The Motor-
master I control must be used in conjunction with the Acces-
sory 0° F Low Ambient Kit (purchased separately). The
Motormaster I device controls outdoor fan no. 1 while out-
door fans no. 2 and 3 are sequenced off by the Accessory 0° F
Low Ambient Kit.
B. Differential Enthalpy Control
NOTE: The accessory outdoor-air enthalpy sensor must be
installed BEFORE the economizer hoods are installed on the
unit or hoods will have to be removed.
Accessory 0° F Low Ambient Kit — Install the Accessory
0°
F
Low Ambient Kit per instruction supplied with
1. Remove and discard the factory-installed jumper as-
sembly containing the 800-ohm resistor on the econo-
mizer control module (between terminals SR and +. See
Fig. 15.
accessory.
Motor Mount — To ensure proper fan height, replace the ex-
isting motor mount with the new motor mount provided with
accessory.
2. Disconnect black wire from economizer control module
terminal SO and blue wire from the OAT (outdoor-air
thermostat).
—13—
Install Motormaster III Controls
Only one Motormaster III control is required per unit.
Sensor — Install the sensor for thermistor input control in
the location shown in Fig. 24. Connect sensor leads to the
purple and grey control signal leads on the Motormaster III
control.
Signal Selection Switch — Remove the cover of the Motor-
master III control. Set the switch to accept the thermistor
sensor input signal. Set the frequency to match the unit power
supply (60 Hz).
Motormaster III Control — Recommended mounting location
is beneath the control box, mounted to the partition that sepa-
rates the control box section from the indoor section.
NOTE: If unit power is supplied through the roof curb and
basepan of the unit, mount the Motormaster III control on
the corner post adjacent to the conduit running from the base-
pan to the bottom of the control box.
NOTE: Dimensions in ( ) are in mm.
Fig. 22 — Wind Baffle Details
Transformer (460-v Units Only) — On 460-v units, a trans-
former is required. The transformer is provided with the ac-
cessory and must be field-installed.
Sensor Assembly — Install the sensor assembly in the loca-
tion shown in Fig. 23.
SENSOR
LOCATION
Motormaster I Control — Recommended mounting location
is on the inside of the panel to the left of the control box. The
control should be mounted on the inside of the panel, verti-
cally, with leads protruding from bottom of extrusion.
SENSOR
LOCATION
B. Motormaster III Control Installation (559F240 and 300)
Install Field-Fabricated Wind Baffles
Wind baffles must be field-fabricated for all units to ensure
proper cooling cycle operation at low ambient temperatures.
See Fig. 22 for baffle details. Use 20-gage, galvanized sheet
metal, or similar corrosion-resistant metal for baffles. Use field-
supplied screws to attach baffles to unit. Screws should be
1
5
HAIRPIN END
HAIRPIN END
⁄4-in. diameter and ⁄8-in. long. Drill required screw holes for
mounting baffles.
559F180
559F216
NOTE: All sensors are located on the eighth hairpin up from the bottom.
CAUTION: To avoid damage to the refrigerant coils
and electrical components, use recommended screw sizes
only. Use care when drilling holes.
Fig. 23 — Motormaster I Sensor Locations
Replace Outdoor Motor
Replace outdoor fan motor no. 1 with motor included in
accessory kit. Existing motor is not Motormaster III
compatible.
—14—
addition, Schrader-type valves are located underneath the low-
pressure switches. Be sure that caps on the ports are tight.
VII. COMPRESSOR ROTATION
It is important to be certain the compressors are rotating in
the proper direction. To determine whether or not compres-
sors are rotating in the proper direction:
1. Connect service gages to suction and discharge pres-
sure fittings.
2. Energize the compressor.
3. The suction pressure should drop and the discharge pres-
sure should rise, as is normal on any start-up.
If the suction pressure does not drop and the discharge pres-
sure does not rise to normal levels:
1. Note that the evaporator fan is probably also rotating
in the wrong direction.
2. Turn off power to the unit.
3. Reverse any two of the incoming power leads.
4. Turn on power to the compressor.
SENSOR
LOCATION
SENSOR
LOCATION
The suction and discharge pressure levels should now move
to their normal start-up levels.
NOTE: When compressors are rotating in the wrong direc-
tion, the unit will have increased noise levels and will not
provide heating and cooling.
After a few minutes of reverse operation, the scroll compres-
sor internal overload protection will open, which will acti-
vate the unit’s lockout and requires a manual reset. Reset is
accomplished by turning the thermostat on and off.
HAIRPIN END
HAIRPIN END
VIII. EVAPORATOR FAN
559F240
559F300
Fan belt and variable pulleys are factory installed. Remove
tape from the fan pulley. See Table 4 for Air Quantity Limits.
See Tables 5-7 for Fan Performance data. Be sure that fans
rotate in the proper direction. See Tables 8 and 9 for Static
Pressure information for accessories and options. See
Table 10 for fan rpm at various fan motor pulley settings. To
alter fan performance, see Evaporator-Fan Performance Ad-
justment section, page 21.
NOTE: All sensors are located on the eighth hairpin up from the bottom.
Fig. 24 — Motormasterா III Sensor Locations
START-UP
Use the following information and Start-Up Checklist on
page CL-1 to check out unit PRIOR to start-up.
I. UNIT PREPARATION
Check that unit has been installed in accordance with these
installation instructions and all applicable codes.
Table 4 — Air Quantity Limits
UNIT 559F
MINIMUM CFM
MAXIMUM CFM
II. SERVICE VALVES
180
216
240
300
4500
5400
6000
7000
7,500
9,000
10,000
11,250
Ensure that optional suction, discharge, and standard liquid
line service valves are open. Damage to the compressor could
result if they are left closed.
IX. CONDENSER FANS AND MOTORS
III. INTERNAL WIRING
Fans and motors are factory set. Refer to Condenser-Fan Ad-
justment section (page 22) as required.
Check all electrical connections in unit control boxes; tighten
as required.
X. RETURN-AIR FANS
IV. CRANKCASE HEATER(S)
Check that correct filters are installed in filter tracks. See
Table 1. Do not operate unit without return-air filters.
Heater(s) is energized as long as there is power to unit and
compressor is operating.
XI. OUTDOOR-AIR INLET SCREENS
IMPORTANT: Unit power must be on for 24 hours prior to
Outdoor-air inlet screens must be in place before operating
unit.
start-up. Otherwise, damage to compressor may result.
V. COMPRESSOR MOUNTING
XII. ACCESSORY ECONOMIZER ADJUSTMENT
Compressors are internally spring mounted. Do not loosen or
remove compressor holddown bolts.
Remove filter access panel. Check that outdoor-air damper is
closed and return-air damper is open.
VI. REFRIGERANT SERVICE PORTS
Economizer operation and adjustment is described in Base
Unit Operation and Economizer Adjustment sections
(pages 20 and 22), respectively.
Each refrigerant system has a total of 3 Schrader-type serv-
ice gage ports. One port is located on the suction line, one on
the compressor discharge line, and one on the liquid line. In
—15—
Table 5 — Fan Performance — 559F180
Available External Static Pressure (in. wg)
559F180 (15 TONS)
Airflow
0.2
0.4
0.6
0.8
1.0
1.2
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
4500
4800
5100
5400
5700
6000
6300
6600
6900
7200
7500
684 1.28 1102
715 1.47 1265
747 1.67 1442
779 1.90 1635
812 2.14 1844
845 2.40 2068
878 2.68 2309
912 2.98 2566
791 1.49 1283
817 1.68 1451
844 1.89 1633
872 2.12 1831
901 2.37 2044
887 1.70 1466
910 1.90 1638
977 1.92 1652 1061 2.13 1841 1139 2.36 2034
997 2.12 1828 1078 2.34 2021 1155 2.57 2217
934 2.12 1825 1018 2.34 2019 1097 2.57 2216 1171 2.80 2416
959 2.35 2027 1040 2.58 2226 1117 2.81 2426 1189 3.05 2629
985 2.60 2245 1063 2.84 2448 1138 3.07 2652 1209 3.31 2858
931 2.64 2273 1011 2.87 2478 1087 3.11 2685 1160 3.35 2893 1229 3.60 3103
961 2.92 2518 1039 3.16 2728 1112 3.41 2939 1183 3.65 3151 1250 3.90 3365
992 3.22 2780 1067 3.47 2994 1138 3.72 3209 1207 3.97 3425 1273 4.22 3642
946 3.29 2841 1023 3.55 3059 1096 3.80 3277 1165 4.05 3496 1232 4.31 3716
—
—
—
—
—
—
—
—
—
981 3.63 3133 1055 3.89 3355 1125 4.15 3578
1016 3.99 3443 1087 4.25 3669
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
559F180 (15 TONS) (cont)
Available External Static Pressure (in. wg)
1.6 1.8 1.9
Airflow
1.4
2.0
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
4500
4800
5100
5400
5700
6000
6300
6600
6900
7200
7500
1214 2.59 2230 1285 2.82 2430 1353 3.05 2633 1386 3.17 2736 1418 3.29 2839
1228 2.80 2417 1297 3.04 2619 1364 3.27 2825 1396 3.40 2928 1428 3.52 3033
1243 3.04 2618 1311 3.27 2823 1376 3.51 3031 1408 3.64 3136 1439 3.76 3242
1259 3.29 2835 1326 3.53 3043 1390 3.77 3254 1421 3.90 3360 1452 4.02 3467
1277 3.56 3067 1342 3.80 3278 1405 4.05 3492 1435 4.17 3600 1466 4.30 3708
1295 3.84 3316 1359 4.09 3530 1421 4.34 3746
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1315 4.15 3580
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
——
LEGEND
Brake Horsepower
3. Static pressure losses (i.e., economizer) must be added to external
static pressure before entering Fan Performance table.
4. Interpolation is permissible. Do not extrapolate.
5. Fan performance is based on wet coils, clean filters, and
casing losses. See Table 8 for accessory/FIOP static pressure
information.
6. Extensive motor and drive testing on these units ensures that the full
horsepower and watts range of the motor can be utilized with confi-
dence. Using your fan motors up to the watts or bhp rating shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
7. Use of a field-supplied motor may affect wiring size. Contact your
Bryant representative for details.
Bhp
—
—
—
FIOP
Factory-Installed Option
Input Watts to Motor
Watts
NOTES:
1. Standard low-medium static drive range is 891 to 1179 rpm. Alter-
nate high-static drive range is 1227 to 1550. Other rpms require a
field-supplied drive.
2. Maximum continuous bhp is 4.25 and the maximum continuous watts
are 3775. Do not adjust motor rpm such that motor maximum bhp
and/or watts is exceeded at the maximum operating cfm.
—16—
Table 6 — Fan Performance — 559F216 and 240
Available External Static Pressure (in. wg)
559F216 and 240 (18 and 20 TONS)
Airflow
0.2
0.4
0.6
0.8
1.0
1.2
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
5,500
6,000
6,500
7,000
7,500
8,000
8,500
682 1.99 1675
730 2.38 2005
778 2.82 2373
828 3.31 2780
878 3.84 3227
928 4.42 3715
760 2.29 1922
802 2.68 2257
846 3.13 2630
892 3.62 3042
938 4.15 3494
832 2.59 2177
871 2.99 2516
911 3.44 2893
901 2.90 2441
935 3.31 2783
965 3.22 2712 1027 3.56 2990
997 3.63 3057 1056 3.97 3337
972 3.76 3164 1031 4.09 3440 1087 4.43 3722
953 3.94 3310 1011 4.26 3583 1067 4.59 3863 1121 4.93 4148
996 4.48 3766 1051 4.81 4043 1105 5.14 4326 1156 5.49 4613
985 4.74 3986 1040 5.07 4263 1093 5.40 4544 1144 5.74 4830 1194 6.09 5120
979 5.05 4245 1033 5.38 4521 1085 5.71 4801 1136 6.05 5086 1185 6.39 5375 1232 6.74 5669
9,000 1030 5.73 4817 1082 6.06 5098 1131 6.40 5382 1180 6.74 5671 1227 7.09 5964 1272 7.44 6260
9,500 1082 6.46 5433 1131 6.80 5718 1178 7.14 6007 1225 7.49 6299 1270 7.84 6595 1313 8.20 6895
10,000 1134 7.25 6093 1180 7.59 6382 1226 7.94 6675 1270 8.29 6971 1313 8.65 7271 1356 9.01 7574
559F216 and 240 (18 and 20 TONS) (cont)
Available External Static Pressure (in. wg)
Airflow
1.4
1.6
1.8
1.9
2.0
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
5,500 1086 3.89 3275 1142 4.24 3567 1197
6,000 1112 4.31 3623 1167 4.66 3915 1219
6,500 1142 4.77 4010 1194 5.12 4304 1245
7,000 1173 5.28 4438 1224 5.63 4733 1273
7,500 1207 5.83 4906 1255 6.19 5203 1302
8,000 1242 6.44 5415 1289 6.80 5714 1334
8,500 1279 7.10 5966 1324 7.45 6268 1368
9,000 1317 7.80 6561 1360 8.16 6865 1403
9,500 1356 8.56 7198 1398 8.93 7505 1440
4.59 3864 1223 4.77 4015 1249 4.96 4167
5.01 4213 1245 5.19 4364 1270 5.37 4516
5.47 4602 1270 5.65 4754 1294 5.83 4906
5.98 5033 1296 6.17 5184 1320 6.35 5337
6.55 5504 1326 6.73 5657 1348 6.91 5810
7.16 6018 1357 7.34 6171 1379 7.52 6325
7.82 6573 1389 8.00 6728 1411 8.18 6883
8.53 7173 1424 8.71 7328 1445 8.90 7484
9.29 7815 1460 9.48 7972 1480 9.67 8129
10,000 1397 9.37 7881 1438 9.74 8190 1477 10.11 8503
—
—
—
—
—
—
LEGEND
3. Static pressure losses (i.e., economizer) must be added to external
static pressure before entering Fan Performance table.
4. Interpolation is permissible. Do not extrapolate.
5. Fan performance is based on wet coils, clean filters, and
casing losses. See Table 9 for accessory/FIOP static pressure
information.
Bhp
FIOP
Watts
—
—
—
Brake Horsepower
Factory-Installed Option
Input Watts to Motor
NOTES:
1. Standard low-medium static drive range for the 216 size is 910 to
1095 rpm. Standard low-medium static drive range for the 240 size
is 1002 to 1225 rpm. Alternate high-static drive range for the
216 size is 1069 to 1287. Alternate high-static drive range for the
240 size is 1193 to 1458 rpm. Other rpms require a field-supplied
drive.
2. Maximum continuous bhp for the 216 size is 5.90. Maximum con-
tinuous bhp for the 240 size is 8.7 (208/230 v) or 9.5 (460 v). The
maximum continuous watts for the 216 size is 5180. The maximum
continuous watts for the 240 size is 7915 (208/230 v) or 8640
(460 v). Do not adjust motor rpm such that motor maximum bhp and/or
watts is exceeded at the maximum operating cfm.
6. Extensive motor and drive testing on these units ensures that the full
horsepower and watts range of the motor can be utilized with confi-
dence. Using your fan motors up to the watts or bhp rating shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
7. Use of a field-supplied motor may affect wiring size. Contact your
Bryant representative for details.
—17—
Table 7 — Fan Performance — 559F300
Available External Static Pressure (in. wg)
559F300 (25 TONS)
Airflow
0.2
0.4
0.6
0.8
1.0
1.2
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
7,000
7,500
8,000
845 3.26 2693
896 3.82 3156
909
956
3.60 2979
969
3.96 3272 1028
4.54 3752 1069
5.17 4278 1112
5.87 4853 1156
6.63 5478 1202
7.44 6155 1248
8.33 6886 1295
9.28 7671 1342
4.32 3574 1083
4.91 4060 1123
5.56 4593 1163
6.26 5175 1205
7.02 5808 1248
7.85 6492 1293
8.74 7229 1338
4.70 3883 1137
5.29 4375 1174
5.94 4915 1213
6.66 5504 1253
7.43 6142 1294
8.26 6833 1336
9.16 7577 1380
5.08
5.68
6.34
7.06
7.84
8.68
9.59
4,200
4,698
5,243
5,838
6,483
7,179
7,929
8,733
9,594
4.17 3450 1014
4.80 3969 1060
5.49 4537 1106
6.23 5155 1154
7.04 5824 1202
7.92 6547 1251
8.86 7325 1300
948 4.43 3667 1005
8,500 1001 5.11 4226 1054
9,000 1053 5.85 4836 1104
9,500 1106 6.65 5498 1155
10,000 1159 7.52 6214 1206
10,500 1213 8.45 6984 1257
11,000 1266 9.45 7810 1309
9.70 8020 1384 10.13 8375 1424 10.56
9.87 8159 1350 10.29 8511 1391 10.73 8868 1431 11.16 9229 1470 11.60
11,250 1293 9.97 8245 1334 10.40 8597 1375 10.83 8953 1415 11.26 9313 1454 11.70 9677 1493 12.15 10,045
559F300 (25 TONS) (cont)
Available External Static Pressure (in. wg)
Airflow
1.4
1.6
1.8
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
7,000 1189 5.47 4,524 1239 5.87 4,854 1288 4.91 5191
7,500 1224 6.08 5,026 1272 6.48 5,362 1320 5.56 5703
8,000 1261 6.75 5,577 1307 7.16 5,917 1353 6.26 6263
8,500 1299 7.47 6,177 1344 7.89 6,523 1388 7.02 6873
9,000 1338 8.26 6,828 1382 8.68 7,179 1424 7.85 7534
9,500 1379 9.11 7,530 1421 9.54 7,887 1462 8.74 8247
10,000 1421 10.02 8,286 1461 10.46 8,648 1501 9.70 9014
10,500 1464 11.00 9,096 1503 11.45 9,464 1541 10.73 9835
11,000 1508 12.05 9,963 1546 12.50 10,336
—
—
—
—
—
—
11,250 1530 12.60 10,417
—
—
—
LEGEND
3. Static pressure losses (i.e., economizer) must be added to external
static pressure before entering Fan Performance table.
4. Interpolation is permissible. Do not extrapolate.
5. Fan performance is based on wet coils, clean filters, and
casing losses. See Table 9 for accessory/FIOP static pressure
information.
6. Extensive motor and drive testing on these units ensures that the full
horsepower and watts range of the motor can be utilized with confi-
dence. Using your fan motors up to the watts or bhp rating shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
7. Use of a field-supplied motor may affect wiring size. Contact your
Bryant representative for details.
Bhp
—
—
—
Brake Horsepower
Factory-Installed Option
Input Watts to Motor
FIOP
Watts
NOTES:
1. Standard low-medium static drive range is 1066 to 1283 rpm. Alter-
nate high-static drive range is 1332 to 1550. Other rpms require a
field-supplied drive.
2. Maximum continuous bhp is 10.2 (208/230 v) or 11.8 (460 v) and the
maximum continuous watts are 9510 (208/230 v) or 11,000 (460 v).
Do not adjust motor rpm such that motor maximum bhp and/or watts
is exceeded at the maximum operating cfm.
—18—
Table 8 — Accessory/FIOP Static Pressure (in. wg) — 559F180
CFM
COMPONENT
4500
0.04
0.22
5000
0.05
0.26
6000
0.07
0.35
7200
0.09
0.44
7500
0.10
0.46
Economizer
Glycol Coil
Electric Heat (kW)
26/34
32
0.06
0.06
0.07
0.07
0.09
0.09
0.07
0.07
0.08
0.08
0.10
0.10
0.09
0.09
0.12
0.12
0.15
0.15
0.11
0.11
0.16
0.15
0.20
0.20
0.12
0.12
0.17
0.17
0.21
0.21
42/56
55
56/75
80
LEGEND
NOTES:
1. The static pressure must be added to external static pressure. The
sum and the evaporator entering-air cfm should then be used in con-
junction with the Fan Performance tables to determine blower rpm
and watts.
FIOP
—
Factory-Installed Option
2. Heaters are rated at 208/240 v and 480 v.
Table 9 — Accessory/FIOP Static Pressure (in. wg) — 559F216-300
CFM
COMPONENT
5400
0.06
0.30
6000
0.07
0.35
7200
0.09
0.44
9000
0.11
0.58
10,000
0.12
11,250
0.14
Economizer
Glycol Coil
0.66
0.77
Electric Heat (kW)
26/34
32
0.08
0.08
0.11
0.11
0.14
0.14
0.09
0.09
0.12
0.12
0.15
0.15
0.11
0.11
0.15
0.15
0.20
0.20
0.15
0.15
0.19
0.19
0.24
0.24
0.17
0.17
0.21
0.21
0.26
0.26
0.20
0.20
0.24
0.24
0.29
0.29
42/56
55
56/75
80
LEGEND
NOTES:
1. The static pressure must be added to external static pressure. The
sum and the evaporator entering-air cfm should then be used in con-
junction with the Fan Performance tables to determine blower rpm
and watts.
FIOP
—
Factory-Installed Option
2, Heaters are rated at 208/240 v and 480 v.
Table 10 — Fan Rpm at Motor Pulley Settings*
MOTOR PULLEY TURNS OPEN
UNIT
559F
1
0
⁄
2
1
11⁄2
2
21⁄2
3
31⁄2
4
41⁄2
978
5
51⁄2
6
180†
180**
216†
216**
240†
240**
300†
300**
††
††
††
††
††
††
††
††
††
††
††
††
††
††
††
††
1179
1559
1095
1287
1225
1458
1283
—
1150
1522
1077
1265
1209
1434
1269
—
1121
1488
1058
1243
1187
1407
1247
1551
1093
1455
1040
1222
1165
1381
1225
1524
1064
1422
1021
1200
1143
1354
1203
1497
1035
1389
1002
1178
1120
1328
1182
1470
1006
1356
984
949
920
891
1323
965
1289
947
1256
928
1227
910
1156
1098
1301
1160
1443
1134
1076
1275
1138
1415
1112
1053
1248
1116
1388
1091
1031
1222
1095
1361
1069
1002
1193
1066
1332
*Approximate fan rpm shown.
†Indicates standard drive package.
**Indicates alternate drive package.
††Due to belt and pulley size, pulley cannot be set to this number of turns open.
NOTE: For speeds not listed above, field-supplied drives are required.
—19—
XIII. BASE UNIT OPERATION
A. Evaporator Coil
Clean as required with a commercial coil cleaner.
A. Cooling, Units Without Economizer
NOTE: The 559F300 unit has a mist eliminator screen
attached to the evaporator coil to prevent condensate runoff
at high wet-bulb conditions. Check periodically and clean as
necessary.
When thermostat calls for cooling, terminals G and Y1 are
energized. The indoor (evaporator) fan contactor (IFC), and
compressor contactor no. 1 (C1) are energized and evaporator-
fan motor, compressor no. 1 and condenser fans start. The
condenser-fan motors run continuously while unit is cooling.
If the thermostat calls for a second stage of cooling by ener-
gizing Y2, compressor contactor no. 2 (C2) is energized and
compressor no. 2 starts.
B. Condenser Coil
Clean condenser coil annually and as required by location
and outdoor-air conditions. Inspect coil monthly — clean as
required.
B. Heating, Units Without Economizer (If Accessory or Op-
tional Heater is Installed)
C. Condensate Drain
Check and clean each year at start of cooling season.
Upon a call for heating through terminal W1, IFC and heater
contactor no. 1 (HC1) are energized. On units equipped for
2 stages of heat, when additional heat is needed, HC2 is en-
ergized through W2.
D. Filters
Clean or replace at start of each heating and cooling season,
or more often if operating conditions require. Refer to
Table 1 for type and size.
C. Cooling, Units With Economizer
NOTE: The 559F300 unit requires industrial grade throw-
away filters capable of withstanding face velocities up to
625 fpm. Ensure that replacement filters for the 559F300 units
are rated for 625 fpm.
Upon a call for cooling, when outdoor ambient temperature
is above the outdoor-air temperature control setting, the evapo-
rator and condenser fans and compressor energize. The econo-
mizer damper moves to VENT position.
Upon a first-stage call for cooling, when outdoor ambient
temperature is below the temperature control setting, the evapo-
rator fan starts and economizer damper modulates to main-
tain mixed-air temperature. The compressor(s) remains off.
E. Outdoor-Air Inlet Screens
Clean screens with steam or hot water and a mild detergent.
Do not use throwaway filters in place of screens.
II. LUBRICATION
A. Compressors
Upon a second-stage call for cooling, compressor no. 1 is en-
ergized and mechanical cooling is integrated with econo-
mizer cooling. Compressor no. 2 is locked out. If the outdoor-
air temperature is below 50 F, a cooling lockout switch prevents
the compressor(s) from running.
Each compressor is charged with the correct amount of oil at
the factory. Conventional white oil (Sontext 200LT) is used.
White oil is compatible with 3GS oil, and 3GS oil may be used
if the addition of oil is required. See compressor nameplate
for original oil charge. A complete recharge should be
four ounces less than the original oil charge. When a com-
pressor is exchanged in the field it is possible that a major
portion of the oil from the replaced compressor may still be
in the system. While this will not affect the reliability of the
replacement compressor, the extra oil will add rotor drag and
increase power usage. To remove this excess oil, an access
valve may be added to the lower portion of the suction line at
the inlet of the compressor. The compressor should then be
run for 10 minutes, shut down, and the access valve opened
until no oil flows. This should be repeated twice to make sure
the proper oil level has been achieved.
When supply-air temperature drops below a fixed set point,
the economizer damper modulates to maintain the tempera-
ture at the fixed set point.
D. Freeze Protection Thermostat
A freeze protection thermostat (FPT) is located on the evapo-
rator coil. It detects frost build-up and turns off the compres-
sor, allowing the coil to clear. Once frost has melted, the com-
pressor can be reenergized by resetting the compressor lockout.
E. Heating, Units With Economizer (If Accessory or Op-
tional Heater Is Installed)
The outdoor air damper stays at VENT position while the evapo-
rator fan is operating. Upon a call for heating through ter-
minal W1, the indoor (evaporator) fan contactor (IFC) and
heater contactor no. 1 (HC1) are energized. On units equipped
for 2 stages of heat, when additional heat is needed, HC2 is
energized through W2.
B. Fan Shaft Bearings
For size 180 units, bearings are permanently lubricated. No
field lubrication is required. For size 216-300 units, the bear-
ings are of the pillow block type and have grease fittings. The
bearing opposite the motor end has an extended tube line so
it can be lubricated from the motor side. Lubricate the bear-
ings twice annually.
SERVICE
WARNING: Before performing service or mainte-
nance operations on unit, turn off main power switch
to unit. Turn off accessory heater power switch if appli-
cable. Electrical shock could cause personal injury.
Typical lubricants are given below:
MANUFACTURER
LUBRICANT
Texaco
Mobil
Sunoco
Texaco
Regal AFB-2*
Mobilplex EP No. 1
Prestige 42
Multifak 2
I. CLEANING
*Preferred lubricant because it contains rust and oxidation inhibitors.
Inspect unit interior at beginning of each heating and cool-
ing season and as operating conditions require. Remove unit
top panel and/or side panels for access to unit interior.
C. Condenser and Evaporator-Fan Motor Bearings
The condenser and evaporator-fan motors have permanently-
sealed bearings, so no field lubrication is necessary.
—20—
III. EVAPORATOR FAN PERFORMANCE ADJUSTMENT
(Fig. 25-27)
Fan motor pulleys are factory set for speed shown in Table 1.
To change fan speeds:
1. Shut off unit power supply.
2. a. Size 180 Only: Loosen belt by loosening fan motor
mounting plate nuts.
b. Size 216-300 Only: Loosen nuts on the 2 carriage bolts
in the motor mounting base. Install jacking bolt and
plate under motor base (bolt and plate are shipped
in installer ’s packet). See Fig. 25. Using bolt and plate,
raise motor to top of slide and remove belt. Secure
motor in this position by tightening the nuts on the
carriage bolts.
3. Loosen movable-pulley flange setscrew (see Fig. 25).
4. Screw movable flange toward fixed flange to increase speed
and away from fixed flange to decrease speed. Increas-
ing fan speed increases load on motor. Do not exceed maxi-
mum speed specified in Table 1.
See Table 4 for air quantity limits.
5. Set movable flange at nearest keyway of pulley hub and
tighten setscrew. (See Table 1 for speed change for each
full turn of pulley flange.)
6. Replace and tighten belts. See Belt Tension Adjustment
section on page 22.
To align fan and motor pulleys:
1. Loosen fan pulley setscrews.
2. Slide fan pulley along fan shaft.
Fig. 25 — Evaporator-Fan Pulley Alignment
and Adjustment
3. Make angular alignment by loosening motor from mount-
ing plate.
IV. EVAPORATOR FAN SERVICE AND REPLACEMENT
A. 559F180 Units (See Fig. 26)
NOTE: To remove belts only, follow Steps 1-6.
1. Remove filter and supply-air section panels.
2. Remove unit top panel.
3. Loosen carriage nuts A and B holding motor mount as-
sembly to fan scroll side plates.
4. Loosen screw C.
5. Rotate motor mount assembly (with motor attached)
as far as possible away from evaporator coil.
6. Remove belt.
7. Rotate motor mount assembly back past original posi-
tion toward evaporator coil.
8. Remove motor mounting nuts D and E (both sides).
9. Lift motor up through top of unit.
10. Reverse above procedure to reinstall motor.
11. Check and adjust belt tension as necessary.
B. 559F216-300 Units (See Fig. 27)
The 559F216-300 units use a fan motor mounting system that
features a slide-out motor mounting plate. To replace or serv-
ice the motor, slide out the bracket.
1. Remove the evaporator-fan access panel and the heat-
ing control access panel.
2. Remove the center post (located between the evapora-
tor fan and heating control access panels) and all screws
securing it.
Fig. 26 — 559F180 Evaporator-Fan
Motor Section
3. Loosen nuts on the two carriage bolts in the motor mount-
ing base.
—21—
4. Using jacking bolt under motor base, raise motor to top
of slide and remove belt. Secure motor in this position
by tightening the nuts on the carriage bolts.
VI. CONDENSER-FAN ADJUSTMENT
A. 559F180-216 Units (Fig. 28)
1. Shut off unit power supply.
5. Remove the belt drive.
2. Remove access panel(s) closest to the fan to be adjusted.
3. Loosen fan hub setscrews.
6. Remove jacking bolt and tapped jacking bolt plate.
7. Remove the 2 screws that secure the motor mounting
plate to the motor support channel.
4. Adjust fan height on shaft using a straightedge placed
across the fan orifice.
8. Remove the 3 screws from the end of the motor sup-
port channel that interfere with the motor slide path.
5. Tighten setscrews and replace panel(s).
6. Turn on unit power.
9. Slide out the motor and motor mounting plate.
10. Disconnect wiring connections and remove the 4 mount-
ing bolts.
B. 559F240,300 Units (Fig. 29)
1. Shut off unit power supply.
11. Remove the motor.
2. Remove fan top-grille assembly and loosen fan hub screws.
12. To install the new motor, reverse Steps 1-11.
3. Adjust fan height on unit, using a straightedge placed
across the fan orifice.
4. Tighten setscrews and replace rubber hubcap to pre-
vent hub from rusting to motor shaft.
5. Fill hub recess with permagum if rubber hubcap is
missing.
NOTE: Dimensions are in inches.
Fig. 28 — Condenser Fan Adjustment, 559F180,216
NOTE: A 21⁄2-in. bolt and threaded plate are included in the installer’s
packet. They should be added to the motor support channel below the
motor mounting plate to aid in raising the motor. The plate part number
3
is 50DP503842. The adjustment bolt is
⁄
8
- 16 x 13⁄4-in. LG.
Fig. 27 — 559F216-300 Evaporator-Fan
Motor Section
NOTE: Dimensions are in inches.
Fig. 29 — Condenser-Fan Adjustment, 559F240,300
VII. ECONOMIZER ADJUSTMENT
V. BELT TENSION ADJUSTMENT
See Tables 11 and 12 for checkout and outdoor-air tempera-
ture simulation. Make certain the outdoor-air damper is fully
closed and the return-air damper is fully open before com-
pleting the following steps.
To adjust belt tension:
1. Loosen fan motor bolts.
2. Adjust belt tension:
a. Size 180 Units: Move motor mounting plate up or
down for proper belt tension (1⁄2 in. deflection with
one finger).
1. Turn on power to the unit.
2. Turn the thermostat fan switch to the ON position. The
damper will go to the vent position.
b. Size 216-300 Units: Turn motor jacking bolt to move
motor mounting plate up or down for proper belt
tension (3⁄8 in. deflection at midspan with one finger
[9 lb force]).
3. Adjust the vent position with the minimum damper po-
sition adjustment on the module. See Fig. 15.
4. Set the system selector switch to COOL position
and set the cooling temperature selector to its lowest
setting.
3. Tighten nuts.
4. Adjust bolts and nut on mounting plate to secure motor
in fixed position.
NOTE: The Cooling mode may also be simulated by remov-
ing the thermostat wires from terminals Y1 and Y2 and in-
stalling a jumper between terminals R and Y1. Refer to unit
label diagram for terminal locations.
—22—
Table 11 — Economizer Checkout Procedures
9. Remove the jumper from around the contacts of the OAT
if installed in Step 6. Remove the jumper from termi-
nals T and T1 installed in Step 7.
TEST PROCEDURE
RESULTS
A. Disconnect power at TR
and TR1.
10. If the Cooling mode was simulated to operate the unit
in Step 4, remove the jumper and reconnect the ther-
mostat wires to terminals Y1 and Y2.
Disconnect jumper
between P and
P1. See Fig. 15.
VIII. POWER FAILURE
B. Jumper TR to 1.
C. Jumper T1 to T.
D. Disconnect outdoor-air
thermostat connections
from SO and +.
Dampers have a spring return. In event of power failure, damp-
ers will return to fully closed position until power is restored.
Do not manually operate damper motor.
Factory-installed
IX. REFRIGERANT CHARGE
800 ohm resistor
should remain connected
Amount of refrigerant charge is listed on unit nameplate and
in Table 1. Refer to GTAC II; Module 5; Charging, Recovery,
Recycling, and Reclamation section for charging methods and
procedures. Unit panels must be in place when unit is oper-
ating during charging procedure.
to SR and +.
E. Reconnect power to
terminals TR and TR1.
1. LED (light-emitting diode)
should be off.
2. Motor is in closed position.
NOTE: Do not use recycled refrigerant as it may contain
contaminants.
TEST PROCEDURE
RESULTS
A. No Charge
A. Disconnect
factory-installed
resistor from
Use standard evacuating techniques. After evacuating
system, weigh in the specified amount of refrigerant (refer to
Table 1).
terminals SR and +.
1. LED (light-emitting diode)
should be on.
2. Motor drives toward open.
B. Low Charge Cooling
Using cooling charging chart (see Fig. 30), add or remove re-
frigerant until conditions of the chart are met. Note that charg-
ing chart is different from those normally used. An accurate
pressure gage and temperature-sensing device is required.
Charging is accomplished by ensuring the proper amount of
liquid sub-cooling. Measure liquid line pressure at the liquid
line service valve using pressure gage. Connect temperature
sensing device to the liquid line near the liquid ine service
valve and insulate it so that outdoor ambient temperature
does not affect reading.
Table 12 — High and Low Outdoor-Air
Temperature Simulation
TEST PROCEDURE
RESULTS
A. Reconnect factory-
installed 800 ohm resis-
tor between terminals
SR and +.
B. Connect 1200 ohm
checkout resistor
between terminals
SO and +.
C. To Use the Cooling Charging Chart
C. Turn set point poten-
Use the above temperature and pressure readings, and find
the intersection point on the cooling charging chart. If inter-
section point on chart is above line, add refrigerant. If inter-
section point on chart is below line, carefully recover some of
the charge. Recheck suction pressure as charge is adjusted.
tiometer to position A.
Low outdoor-air temperature
test results:
1. LED (light-emitting diode)
should be on.
2. Motor drives toward open.
NOTE: Indoor-air CFM must be within normal operating range
of unit. All outdoor fans must be operating.
D. Turn set point poten-
tiometer to position D.
E. Disconnect 1200 ohm
checkout resistor.
The TXV (thermostatic expansion valve) is set to maintain
between 15 and 20 degrees of superheat at the compressors.
The valves are factory set and should not require
re-adjustment.
High outdoor-air temperature
test results:
1. LED should be off.
2. Motor drives toward closed.
X. FILTER DRIER
Replace whenever refrigerant system is exposed to
atmosphere.
5. Set the outdoor-air thermostat (OAT) located in the econo-
mizer section of the unit (see Fig. 14) to 75 F.
XI. PROTECTIVE DEVICES
A. Compressor Protection
6. If the outdoor temperature is below 75 F, the econo-
mizer will control the mixed air with the mixed-air sen-
sor. If the outdoor air is above 75 F, place a jumper
around the contacts of the OAT.
Overtemperature
Each compressor has an internal protector to protect it against
excessively high discharge gas temperatures.
7. J umper terminal T to terminal T1 on the module (see
Fig. 15). The economizer will go to the full open posi-
tion. The outdoor-air damper will go to the full open
position, and the return-air damper will go to the full
closed position.
Overcurrent
Each compressor has internal line break motor protection,
except circuit no. 1 on the 559F300 unit. Compressor
no. 1 on the 559F300 unit uses an electronic module, located
with the compressor junction box, to provide motor protec-
tion. This electronic module monitors winding and discharge
temperatures. If these temperatures reach the trip values,
the module interrupts the control line and causes the com-
pressor to switch off.
8. Adjust mechanical linkage, if necessary, for correct po-
sitioning. It may be necessary to remove the filters to
adjust the linkage.
—23—
BOTH CIRCUITS
ALL OUTDOOR FANS MUST BE OPERATING
B. Evaporator Fan Motor Protection
A manual reset, calibrated trip, magnetic circuit breaker pro-
tects against overcurrent. Do not bypass connections or in-
crease the size of the breaker to correct trouble. Determine
the cause and correct it before resetting the breaker.
140
120
ADD CHARGE IF ABOVE CURVE
C. Condenser-Fan Motor Protection
Each condenser-fan motor is internally protected against
overtemperature.
100
80
D. High- and Low-Pressure Switches
If either switch trips, or if the compressor overtemperature
switch activates, that refrigerant circuit will be automati-
cally locked out by the CLO. To reset, manually move the ther-
mostat setting.
REDUCE CHARGE IF BELOW CURVE
60
E. Freeze Protection Thermostat
An FPT is located on the top and bottom of the evaporator
coil. It detects frost build-up and turns off the compressor, al-
lowing the coil to clear. Once the frost has melted, the com-
pressor can be reenergized by resetting the compressor
lockout.
40
100
150
200
250
300
350
400
50
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
Fig. 30 — Cooling Charging Chart — All Units
Crankcase Heater
XII. RELIEF DEVICES
Only the 559F300 unit is equipped with a 70-watt crankcase
heater to prevent absorption of liquid refrigerant by oil in the
crankcase when the compressor is idle. The crankcase heater
is energized whenever there is a main power to the unit and
the compressor is not energized.
All units have relief devices to protect against damage from
excessive pressures (e.g., fire). These devices protect the high
and low side.
XIII. CONTROL CIRCUIT, 24-V
IMPORTANT: After prolonged shutdown or servicing, ener-
gize the crankcase heaters for 24 hours before starting the
compressors.
This control circuit is protected against overcurrent by a
3.2-amp circuit breaker. Breaker can be reset. If it trips, de-
termine cause of trouble before resetting.
Compressor Lockout
XIV. REPLACEMENT PARTS
If any of the safeties (high-pressure, low-pressure, freeze pro-
tection thermostat, compressor internal thermostat) trip, or
if there is loss of power to the compressors, the CLO (com-
pressor lockout) will lock the compressors off. To reset, manu-
ally move the thermostat setting.
A complete list of replacement parts may be obtained from
any Carrier distributor upon request.
—24—
TROUBLESHOOTING
Refer to Table 13 for troubleshooting details.
Table 13 — Cooling Service Analysis
CAUSE
PROBLEM
REMEDY
Compressor and
condenser fan
will not start.
Power failure.
Call power company.
Fuse blown or circuit breaker tripped.
Replace fuse or reset circuit breaker.
Replace component.
Defective thermostat, contactor, transformer, or control
relay.
Insufficient line voltage.
Determine cause and correct.
Incorrect or faulty wiring.
Check wiring diagram and rewire correctly.
Lower thermostat setting below room temperature.
Check wiring and repair or replace.
Thermostat setting too high.
Compressor will not start
but condenser fan runs.
Faulty wiring or loose connections in compressor circuit.
Compressor motor burned out, seized, or internal
overload open.
Determine cause. Replace compressor.
Defective overload.
Determine cause and replace.
Compressor locked out.
One leg of 3-phase power dead.
Determine cause for safety trip and reset lockout.
Replace fuse or reset circuit breaker.
Determine cause.
Compressor cycles
(other than normally
satisfying thermostat).
Refrigerant overcharge or undercharge.
Recover refrigerant, evacuate system, and recharge
to nameplate.
Defective compressor.
Insufficient line voltage.
Blocked condenser.
Replace and determine cause.
Determine cause and correct.
Determine cause and correct.
Determine cause and replace.
Replace thermostat.
Defective overload.
Defective thermostat.
Faulty condenser-fan motor.
Restriction in refrigerant system.
Dirty air filter.
Replace.
Locate restriction and remove.
Replace filter.
Compressor operates
continuously.
Unit undersized for load.
Thermostat set too low.
Low refrigerant charge.
Air in system.
Decrease load or increase unit size.
Reset thermostat.
Locate leak, repair, and recharge.
Recover refrigerant, evacuate system, and recharge.
Clean coil or remove restriction.
Replace filter.
Condenser coil dirty or restricted.
Dirty air filter.
Excessive head pressure.
Dirty condenser coil.
Refrigerant overcharged.
Faulty TXV.
Clean coil.
Recover excess refrigerant.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Air in system.
Recover refrigerant, evacuate system, and recharge.
Determine cause and correct.
Condenser air restricted or air short-cycling.
Low refrigerant charge.
Restriction in liquid tube.
High heat load.
Head pressure too low.
Check for leaks, repair, and recharge.
Remove restriction.
Excessive suction
pressure.
Check for source and eliminate.
Faulty TXV.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Refrigerant overcharged.
Dirty air filter.
Recover excess refrigerant.
Replace filter.
Suction pressure too low.
Low refrigerant charge.
Metering device or low side restricted.
Faulty TXV.
Check for leaks, repair, and recharge.
Remove source of restriction.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Insufficient evaporator airflow.
Increase air quantity. Check filter and replace if
necessary.
Temperature too low in conditioned area.
Field-installed filter drier restricted.
Unit in economizer mode.
Reset thermostat.
Replace.
Compressor no. 2
will not run.
Proper operation; no remedy necessary.
—25—
Fig. 31 — Typical Wiring Schematic (559F180, 460-v Shown)
—26—
Fig. 31 — Typical Wiring Schematic (559F180, 460-v Shown) (cont)
LEGEND AND NOTES FOR FIG. 31 AND 32
AHA
BKR W/AT
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Adjustable Heat Anticipator
Breaks with Amp Turns
Contactor, Compressor
Capacitor
IFC
IFCB
IFM
IFR
L
LOR
LPS
LS
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Indoor-Fan Contactor
Indoor-Fan Circuit Breaker
Indoor-Fan Motor
Indoor-Fan Relay
Light
TH
TRAN
—
—
Thermostat Heating
Transformer
Terminal (Marked)
CAP
CB
Terminal (Unmarked)
Terminal Block
Splice
Circuit Breaker
CC
Cooling Compensator
Compressor Lockout
Compressor Lockout Switch
Compressor Motor
Current Transformer
Damper Motor
Dummy Terminal
Equipment
Fuse Link
Freeze Protection Thermostat
Fuse
Ground
Heater Contactor
High-Pressure Switch
Heater
Lockout Relay
CLO
CLS
COMP
CT
Low-Pressure Switch
Limit Switch
MAT
OAT
OFC
OFM
OP
Mixed-Air Thermostat
Outdoor-Air Thermostat
Outdoor-Fan Contactor
Outdoor-Fan Motor
Overcurrent Protector
Plug Assembly
DM
DU
Factory Wiring
Field Wiring
EQUIP
FL
PL
To Indicate Common
Potential Only, Not
To Represent Wiring
FPT
FU
PRI
QT
Primary
Quadruple Terminal
Solenoid Relay
GND
HC
SR
SW
TB
Switch
Option/Accessory Wiring
HPS
HTR
Terminal Block
TC
Thermostat Cooling
NOTES:
1. Compressor and fan motors thermally protected; 3-phase motors protected against
primary single-phasing conditions.
2. If any of the original wire furnished must be replaced, it must be replaced with
type 90 C wire or its equivalent.
3. Jumpers are omitted when unit is equipped with economizer.
4. The CLO locks out the compressor to prevent short cycling on compressor over-
load and safety devices. Before replacing CLO, check these devices.
5. Number(s) indicates the line location of used contacts. A bracket over (2) num-
bers signifies a single-pole, double-throw contact. An underlined number sig-
nifies a normally-closed contact. A plain (no line) number signifies a normally-
open contact.
—27—
Fig. 32 — Typical Component Arrangement (559F180 Shown)
—28—
SERVICE TRAINING
P a ck a ged Ser vice Tr a in in g programs are an excellent way to increase your knowledge of the
equipment discussed in this manual, including:
•
•
Unit Familiarization
Installation Overview
•
•
Maintenance
Operating Sequence
A large selection of product, theory, and skills programs are available, using popular video-based
formats and materials. All include video and/or slides, plus companion book.
Cla ssr oom Ser vice Tr a in in g which includes ‘‘hands-on’’ experience with the products in our labs
can mean increased confidence that really pays dividends in faster troubleshooting and fewer call-
backs. Course descriptions and schedules are in our catalog.
CALL F OR F REE CATALOG 1-800-962-9212
[
] Packaged Service Training
[
] Classroom Service Training
Copyright 1998 Bryant Heating & Cooling Systems
CATALOG NO. 5355-900
START-UP CHECKLIST
MODEL NO.:
DATE:
SERIAL NO.:
TECHNICIAN:
I. PRE-START-UP:
Ⅺ VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
Ⅺ VERIFY INSTALLATION OF INDOOR FAN MOTOR ADJ USTMENT BOLT (180 UNITS) OR ADJ USTMENT
BOLT AND PLATE (216-300 UNITS)
Ⅺ OPEN ALL SERVICE VALVES (SUCTION, DISCHARGE, AND LIQUID)
Ⅺ VERIFY INSTALLATION OF ECONOMIZER HOOD
Ⅺ VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
Ⅺ VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
Ⅺ CHECK THAT INDOOR-AIR FILTER IS CLEAN AND IN PLACE
Ⅺ VERIFY THAT UNIT IS LEVEL
Ⅺ CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SET SCREW
IS TIGHT
Ⅺ VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
Ⅺ VERIFY THAT SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION
II. START-UP:
ELECTRICAL
SUPPLY VOLTAGE
L1-L2
L2-L3
L3-L1
COMPRESSOR AMPS — COMPRESSOR NO. 1
— COMPRESSOR NO. 2
L1
L1
L2
L2
L3
L3
SUPPLY FAN AMPS
EXHAUST FAN AMPS
L1 L2
ELECTRIC HEAT AMPS (IF SO EQUIPPED)
L3
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
RETURN-AIR TEMPERATURE
COOLING SUPPLY AIR
F
DB (Dry-Bulb)
DB
F
F
WB (Wet-Bulb)
F
ELECTRIC HEAT SUPPLY AIR (IF SO EQUIPPED)
F
PRESSURES
REFRIGERANT SUCTION
CIRCUIT NO. 1
CIRCUIT NO. 1
PSIG
PSIG
CIRCUIT NO. 2 (216-300 ONLY)
CIRCUIT NO. 2 (216-300 ONLY)
PSIG
PSIG
REFRIGERANT DISCHARGE
Ⅺ VERIFY REFRIGERANT CHARGE USING CHARGING CHART ON PAGE 24
GENERAL
Ⅺ ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO J OB REQUIREMENTS
Ⅺ VERIFY INSTALLATION OF ALL OPTIONS AND ACCESSORIES
Copyright 1998 Bryant Heating & Cooling Systems
CATALOG NO. 5355-900
CL-1
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