INSTALLATION
MANUAL
SINGLE PACKAGED GAS/ELECTRIC
AIR COOLED AIR CONDITIONERS
3 THROUGH 5 NOMINAL TON
DYA: 036
042
048
060
CONTENTS
See the following page for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
The installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions are given to
prevent equipment damage. Warnings are given to alert
installer that personal injury and/or equipment damage may
result if installation procedure is not handled properly.
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
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GENERAL
APPROVALS
Design certified by CGA and AGA listed as follows:
Model DYA units are cooling/heating air conditioners
designed for outdoor installation. Only gas piping, electric
power and duct connections are required at the point of
installation.
1. For use as a forced air furnace with cooling unit.
2. For outdoor installation only.
3. For installation directly on combustible flooring or, in
U.S., on wood flooring or Class A; B; C roof covering
material.
The gas-fired heaters have spark to pilot ignition. The tubular
heat exchangers are aluminized steel.
This appliance is not to be used for temporary heating of
buildings or structures under construction.
4. For installation on combustible material.
5. For use with natural gas and/or propane (LP) gas. Not
suitable for use with conventional venting systems.
Installer should pay particular attention to the words; NOTE,
CAUTION, and WARNING. NOTES are intended to clarify or
make the installation easier. CAUTIONS are given to prevent
equipment damage. WARNINGS are given to alert the
installer that personal injury and/or equipment damage may
result if installation procedure is not handled properly.
This product must be installed in strict compliance
with the enclosed installation instructions and any
applicable local, state, and national codes includ-
ing, but not limited to, building, electrical and
mechanical codes.
INSPECTION
As soon as a unit is received, it should be inspected for possi-
ble damage during transit. If damage is evident, the extent of
the damage should be noted on the carrier's freight bill. A
separate request for inspection by the carrier's agent should
be made in writing.
RENEWAL PARTS
Improper installation may create a condition where
the operation of the product could cause personal
injury or property damage.
Contact your local UPG parts distribution center for autho-
rized replacement parts.
D
A
Y
A
-
F
0
3
6
N
0
4
5
PRODUCT CATEGORY
D = Single Package Air Conditioner
NOMINAL GAS HEATING
INPUT CAPACITY
PRODUCT GENERATION
A = 1st Generation
B = 2nd Generation
045 = 45,000 BTUH
070 = 70,000 BTUH
080 = 80,000 BTUH
090 = 90,000 BTUH
110 = 110,000 BTUH
135 = 135,000 BTUH
PRODUCT IDENTIFIER
YA = 10 SEER Gas Heat/Electric
VOLTAGE CODE
NOMINAL COOLING
CAPACITY (MBH)
FACTORY
INSTALLED GAS HEAT
T = 208/230-3-60
W = 460-3-60
036 = 36,000 BTUH
042 = 42,000 BTUH
048 = 48,000 BTUH
060 = 60,000 BTUH
N = Natural Gas Heat Installed
FIGURE 1 - PRODUCT NOMENCLATURE
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INSTALLATION
LIMITATIONS
Excessive exposure of this furnace to contami-
These units must be installed in accordance with the follow-
ing national and local safety codes.
nated combustion air may result in equipment
damage or personal injury. Typical contaminants
include: permanent wave solution, chlorinated
wastes and cleaners, chlorine based swimming
pool chemicals, water softening chemicals, carbon
tetrachloride, halogen type refrigerants, cleaning
solvents (e.g. perchloroethylene), printing inks,
paint removers, varnishes, hydrochloric acid,
cements and glues, antistatic fabric softeners for
clothes dryers, masonry acid washing materials.
1. National Electrical Code ANSI/NFPS No. 70 or Canadian
Electrical Code Part 1, C22.1 (latest editions).
2. National Fuel Gas Code Z223.1 or CAN/CGA B149.1
or.2 Installation Code.
3. Local gas utility requirements.
4. Local plumbing and waste water codes and other appli-
cable local codes.
3. For ground level installation, a level pad or slab should
be used. The thickness and size of the pad or slab used
should meet local codes and unit weight. Do not tie the
slab to the building foundation.
gas heat application data.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer's and/or the customer's
expense.
4. For roof top installation, be sure the structure will support
the weight of the unit plus any field installed components.
Unit must be installed on a level roof curb or appropriate
angle iron frame providing adequate support under the
compressor/condenser section.
Size of unit for proposed installation should be based on heat
loss/heat gain calculations made in accordance with industry
recognized procedures identified by the Air Conditioning
Contractors of America.
5. Maintain level tolerance of unit to 1/8" maximum.
TABLE 1: UNIT APPLICATION DATA
RIGGING OR HANDLING
208/230V2
460V
Voltage Variation
Min. / Max.1
187 / 253
414 / 504
Care must be exercised when moving the unit. Do not
remove any packaging until the unit is near the place of
installation. Rig unit with slings placed under the unit.
Spreader bars of sufficient length should be used across the
Wet Bulb Temperature (°F) of Air on
Evaporator Coil, Min. / Max.
57 / 72
Dry Bulb Temperature (°F) of Air on
Condenser Coil, Min.3 / Max.
45 / 120
top of the unit.
1.
Rated in accordance with ARI Standard 110, utilization range
“A”.
2.
3.
“T1” transformer primary tap must be moved from the 230 volt
connection to the 208 volt connection for low voltage applica-
tions of 208 volt and below
Before lifting a unit, make sure that its weight is dis-
tributed equally on the cables so that it will lift
evenly.
A low ambient accessory is available for operation down to 0 °F.
LOCATION
Use the following guidelines to select a suitable location for
these units.
Units may also be moved or lifted with a fork-lift. Slotted
openings in the skid are provided for this purpose. Forks
must pass completely through the base.
1. Unit is designed for outdoor installation only.
mate center of gravity.
2. Condenser must have an unlimited supply of air. Where
a choice of location is possible, position unit on either
north or east side of building.
4
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Duct work should be designed and sized according to the
methods of the Air Conditioning Contractors of America
(ACCA), as set forth in their Manual D.
TABLE 2: UNIT WEIGHTS AND CENTER OF
GRAVITY
CORNER WEIGHTS
(LOCATION, LBS.)
SHIPPING
WEIGHT
(LBS.)
OPERATING
WEIGHT
(LBS.)
UNIT
SIZE
A closed return duct system shall be used. This shall not pre-
clude use of economizers or ventilation air intake. Flexible
joints may be used in the supply and return duct work to min-
“A”
“B”
“C”
“D”
036
042
048
060
400
410
475
480
395
405
470
475
100
104
119
120
96
98
101
105
120
122
imize the transmission of noise.
100
115
116
101
116
117
When fastening duct work to the side duct flanges
on the unit, insert the screws through the duct
flanges only. Do not insert the screws through the
casing. Outdoor ductwork must be insulated and
waterproofed.
NOTE: Be sure to note supply and return openings.
supply and return air duct openings.
ROOF CURB
On applications when a roof curb is used, the unit must be
positioned on the curb so the front of the unit is tight against
the curb.
FIGURE 2 - UNIT CENTER OF GRAVITY
CLEARANCES
FILTERS
All units require certain clearances for proper operation and
combustion, construction, servicing and proper unit opera-
A filter rack and a high velocity filters are standard.
tion.
Filters must always be used and must be kept clean. When
filters become dirt laden, insufficient air will be delivered by
the blower, decreasing your units efficiency and increasing
operating costs and wear-and-tear on the unit and controls.
Do not permit overhanging structures or shrubs to
obstruct the condenser air discharge, combustion
air inlet or vent outlet.
Filters should be checked monthly especially since this unit is
used for both heating and cooling.
CONDENSATE DRAIN
DUCT WORK
A condensate trap is recommended to be installed in the con-
densate drain. The plumbing must conform to local codes.
Use a sealing compound on male pipe threads. Install the
condensate drain line (NPTF) to spill into an open drain.
These units are adaptable to downflow use as well as rear
supply and return air duct openings. To convert to downflow,
use the following steps:
SERVICE ACCESS
1. Remove the duct covers found in the bottom return and
supply air duct openings. There are four (4) screws
securing each duct cover (save these screws to use
later).
Access to all serviceable components is provided by the fol-
lowing removable panels:
•
•
Blower compartment
Gas control/electrical service access
2. Install the duct covers, removed in step one, to the rear
supply and return air duct openings. Secure with the four
(4) screws used in step one.
imum clearances.
3. Seal duct covers with silicone caulk.
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The wiring entering the cabinet must be provided with
mechanical strain relief.
THERMOSTAT
The room thermostat should be located on an inside wall
approximately 56" above the floor where it will not be subject
to drafts, sun exposure or heat from electrical fixtures or
appliances. Follow manufacturer's instructions enclosed with
the thermostat for general installation procedure. Four color
coded insulated wires (minimum #18 AWG) should be used
A fused disconnect switch should be field provided for the
unit. If any of the wire supplied with the unit must be replaced,
replacement wire must be of the type shown on the wiring
diagram.
Electrical line must be sized properly to carry the load. Each
unit must be wired with a separate branch circuit fed directly
from the meter panel and properly fused.
POWER AND CONTROL WIRING
Field wiring to the unit must conform to provisions of the cur-
rent N.E.C. ANSI/NFPA No. 70 or C.E.C. and/or local ordi-
nances. The unit must be electrically grounded in accordance
with local codes or, in their absence, with the N.E.C./C.E.C.
Voltage tolerances which must be maintained at the com-
pressor terminals during starting and running conditions are
unit wiring diagram for control circuit and power wiring infor-
mation.
FIGURE 3 - TYPICAL FIELD CONTROL WIRING DIAGRAM
COMPRESSORS
CONTACTOR
Units are shipped with compressor mounting factory-adjusted
for shipping.
FIELD-SUPPLIED
DISCONNECT
THREE
PHASE
POWER
SUPPLY
GROUND
LUG
REFER TO ELECTRICAL
DATA TABLES TO SIZE
THE DISCONNECT
Loosen compressor mounting bolts a half turn
before operating unit.
FIGURE 4 - TYPICAL FIELD POWER WIRING
DIAGRAM
6
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TABLE 3: NATURAL GAS APPLICATION DATA
TEMP. RISE °F AT FULL
INPUT3
OUTPUT
CAPACITY
(MBH)
GAS RATE2
FT.3/HR.
NUMBER OF
BURNERS
INPUT CAPACITY
(MBH)1
AVAILABLE ON MODELS
MIN.
25
MAX.
55
3 & 3-1/2 TON
3 & 3-1/2 TON
4 & 5 TON
3 & 3-1/2 TON
4 & 5 TON
4 & 5 TON
1.
45
70
36
56
42
65
2
3
3
4
4
5
25
55
80
64
74
25
55
90
72
84
30
60
108
135
87
100
126
30
60
108
35
65
Heating capacity valid for elevations up to 2000 feet above sea level. For elevations above 2,000 feet, rated capacity should be reduced by 4% for
each 1,000 feet above sea level.
3
2.
3.
Based on 1075 BTU/Ft. .
The air flow must be adjusted to obtain a temperature rise within the range shown. Continuous return air temperature should not be below 55°F.
1
TABLE 4: PROPANE (LP) GAS APPLICATION DATA
TEMP. RISE °F AT FULL
INPUT4
GAS RATE3
FT.3/HR.
NUMBER OF
BURNERS
INPUT CAPACITY
OUTPUT
AVAILABLE ON MODELS
(MBH)2
CAPACITY (MBH)
MIN.
25
MAX.
55
3 & 3-1/2 TON
3 & 3-1/2 TON
4 & 5 TON
45
70
36
56
18
28
32
36
43
54
2
3
3
4
4
5
25
55
80
64
25
55
3 & 3-1/2 TON
4 & 5 TON
90
72
30
60
108
135
87
30
60
4 & 5 TON
108
35
65
1.
2.
Propane applications are accomplished by field installation of a Propane Conversion Accessory, Model 1NP0807 for 3 and 3-1/2 ton units with
33-1/2” tall cabinets and Model 1NP0808 for 4 and 5 ton units with 41-1/2” tall cabinets.
Heating capacity valid for elevations up to 2,000 feet above sea level. For elevations above 2,000 feet, rated capacity should be reduced by 4% for
each 1,000 feet above sea level.
3
3.
4.
Based on 2500 BTU/Ft. .
The air flow must be adjusted to obtain a temperature rise within the range shown. Continuous return air temperatures should not be below 55°F.
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GAS PIPING
1
TABLE 5: NATURAL GAS PIPE SIZING CHART
Proper sizing of gas piping depends on the cubic feet per
hour of gas flow required, specific gravity of the gas and the
length of run. National Fuel Gas Code Z223.1 or CAN/CGA
B149.1 or .2 should be followed in all cases unless super-
seded by local codes or gas company requirements. Refer to
Tables 5 and 6.
NOMINAL INCHES IRON PIPE SIZE
LENGTH
IN FEET
1/2”
132
92
3/4”
278
190
152
130
115
105
96
1”
1-1/4”
1,050
730
10
20
30
40
50
60
70
80
90
520
350
285
245
215
195
180
170
160
150
The heating value of the gas may differ with locality. The
value should be checked with the local gas utility.
73
590
63
500
NOTE: There may be a local gas utility requirement specify-
ing a minimum diameter for gas piping. All units
require a 1/2 inch pipe connection at the gas valve.
56
440
50
400
GAS CONNECTION
46
370
The gas supply line can be routed through the hole located
access openings. Typical supply piping arrangements are
shown in Figure 5.
43
90
350
40
84
320
100
38
79
305
Gas piping recommendations:
1.
Maximum capacity of pipe in cubic feet of gas per hour (based
upon a pressure drop of 0.3 inch water column and 0.6 specific
gravity gas).
1. A drip leg and a ground joint union must be installed in
the gas piping.
2. When required by local codes, a manual shut-off valve
may have to be installed outside of the unit.
TABLE 6: PROPANE (LP) GAS PIPE SIZING
1
CHART
3. Use wrought iron or steel pipe for all gas lines. Pipe dope
should be applied sparingly to male threads only.
NOMINAL INCHES IRON PIPE SIZE
LENGTH
.
IN FEET
A
G
U
T
O
M
A
T
V
I
C
1/2”
275
189
152
129
114
103
96
3/4”
567
393
315
267
237
217
196
185
173
162
1”
1,071
732
590
504
448
409
378
346
322
307
1-1/4”
2,205
1,496
1,212
1,039
913
A
S
V
A
L
E
10
20
30
40
50
60
70
80
90
100
1
/
2
x
1
/
2
K
U
N
I
O
N
1
/
2
x
1
/
2
G
A
S
C
O
C
1
/
2
-
1
4
N
P
T
834
771
89
724
D
R
I
P
L
E
G
FIGURE 5 - EXTERNAL SUPPLY CONNECTION
EXTERNAL SHUT-OFF
83
677
78
630
1.
Maximum capacity of pipe in thousands of BTU per hour (based
upon a pressure drop of 0.5 inch water column).
8
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FLUE VENT HOOD
The flue vent hood with screen is not shipped attached. This
hood must be installed to assure proper unit operation. The
hood must be fastened to the outside of the side gas control/
electrical compartment with the screws provided in the bag
attached to the inside of the gas control/electrical compart-
ment, see Figure 6.
If flexible stainless steel tubing is allowed by the
authority having jurisdiction, wrought iron or steel
pipe must be installed at the gas valve and extend
a minimum of two (2) inches outside of the unit
casing.
i
Flue hood surfaces may be hot.
Natural gas may contain some propane. Propane
being a excellent solvent, will quickly dissolve
white lead or most standard commercial com-
pounds. Therefore, a special pipe dope must be
applied when wrought iron or steel pipe is used.
Shellac base compounds such as gaskoloc or sta-
lastic, and compounds such as rectorseal # 5,
Clyde’s or John Crane may be used.
V
E
N
T
O
U
T
L
E
T
S
C
R
E
E
N
F
L
U
E
V
E
N
T
O
U
T
L
E
T
A
I
R
H
O
O
D
4. All piping should be cleaned of dirt and scale by ham-
mering on the outside of the pipe and blowing out the
loose dirt and scale. Before initial start-up, be sure that
all of the gas lines external to the unit have been purged
of air.
FIGURE 6 - FLUE VENT OUTLET AIR HOOD
5. The gas supply should be a separate line and installed in
accordance with all safety codes as prescribed under
Limitations. After the gas connections have been com-
pleted, open the main shut-off valve admitting normal
gas pressure to the mains. Check all joints for leaks with
soap solution or other material suitable for the purpose.
NEVER USE A FLAME.
The flue exhaust hood must be properly installed
and within the recommended clearances. Further
communications and action must be given to the
home or building owner(s) to eliminate any unau-
thorized human contact around this area during
the heating cycle. Flue hood surface and immedi-
6. The furnace and its individual manual shut-off valve must
be disconnected from the gas supply piping system dur-
ing any pressure testing of that system at test pressures
in excess of 1/2 psig (3.48 kPa).
ate area are designed to operate at high tempera-
tures during the heating cycle.
The furnace must be isolated from the gas supply piping sys-
tem by closing its individual manual shut-off valve during any
pressure testing of the gas supply piping system at test pres-
sures equal to or less than 1/2 psig (3.48 kPa).
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TABLE 7: PHYSICAL DATA
DYA
MODEL
036
11 x 10
3/4
042
11 x 10
3/4
048
12 x 11
1
060
12 x 11
1
CENTRIFUGAL BLOWER (Dia. x W. in.)
FAN MOTOR HP (3 Speed)
ROWS DEEP
EVAPORATOR
BLOWER
2
3
3
3
EVAPORATOR
COIL
FINS PER INCH
15
13
13
13
FACE AREA (Sq. Ft.)
PROPELLER DIA. (in.)
FAN MOTOR HP
3.5
3.5
4.5
4.5
22
22
22
22
CONDENSER
FAN
1/4
1/4
1/4
1/4
NOM. CFM TOTAL
2,400
1
2,400
1
3,000
1
3,000
1
ROWS DEEP
CONDENSER
COIL
FINS PER INCH
20
20
20
20
FACE AREA (Sq. Ft.)
REFRIGERANT 22 (lbs./oz.)
FACE AREA (Sq. Ft.) Size (Nominal)
11.7
4 / 3
2.6/20x20
11.7
4 / 9
2.6/20x20
14.8
6 / 0
14.8
5 / 4
CHARGE
1
3.3/20x12
40
3.3/20x12
40
FILTER
NATURAL GAS BURNER ORIFICE NO.
(Drill Size)
43
43
FURNACE
SECTION
PROPANE BURNER ORIFICE NO.
(Drill Size)
55
1/2 NPTI
R
55
1/2 NPTI
R
53
1/2 NPTI
S
53
1/2 NPTI
S
GAS CONNECTION SIZE
COMPRESSOR
TYPE
HERMETICALLY SEALED
(R = RECIPROCATING, S = SCROLL)
1.
Three phase 036 thru 042 size units are supplied with one (1) filter and on three phase 048 and 060 size units two (2) filters are
supplied. See FILTERS on page 5.
TABLE 8: ELECTRICAL DATA
VOLTAGE
SUPPLY
AIR
BLOWER
MOTOR AMPACITY
FLA
MAX.
HACR
BREAKER POWER
SIZE,
MAX.
FUSE
SIZE,
COND.
FAN
MOTOR,
FLA
COMPRESSOR
1
MINIMUM
CIRCUIT
UNIT
LIMITATIONS
MODEL
DYA
POWER
SUPPLY
TRANSFORMER
SIZE (VA)
FACTOR
2
MIN.
MAX.
RLA
LRA
AMPS
AMPS
036
036
042
042
048
048
060
060
208/230-3-60
460-3-60
187
414
187
414
187
414
187
414
253
504
253
504
253
504
253
504
10.9
5.8
78.0
40.0
88.0
42.0
105
1.1
0.6
1.1
0.6
1.3
0.7
1.3
0.7
3.5
1.8
3.5
1.8
7.0
3.5
7.0
3.5
18.2
9.6
25
15
25
15
35
20
40
20
25
15
25
15
35
20
40
20
.96
.96
.96
.96
.96
.96
.96
.96
75
75
75
75
75
75
75
75
208/230-3-60
460-3-60
11.5
5.8
19.0
9.7
208/230-3-60
460-3-60
14.1
7.1
25.9
13.1
29.5
15.4
55.0
125
208/230-3-60
460-3-60
15.5
8.9
66.5
1.
2.
Utilization range “A” in accordance with ARI Standard 110.
Dual element, time delay type.
10
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341426-BIM-A-0108
All dimensions are in inches.
They are subject to change with-
out notice. Certified dimensions
will be provided upon request.
FIGURE 7 - UNIT DIMENSIONS - FRONT
TABLE 9: UNIT DIMENSIONS FRONT
1 2
TABLE 10: UNIT MINIMUM CLEARANCES
DIMENSION
UNIT SIZE
CLEARANCES
“A”
“B”
FRONT
BACK
36”
0”
036 and 042
048 and 060
33-1/2
41-1/2
18-1/4
23-1/8
LEFT SIDE (Filter-Access)
RIGHT SIDE
24”
12”
0”
3
BELOW UNIT
4
36” (For Condenser Air Discharge
ABOVE UNIT
1.
A 1” clearance must be provided between any combustible
material and the supply 7 air ductwork.
2.
3.
4.
The products of combustion must not be allowed to accumulate
within a confined space and recirculate.
Units may be installed on combustible floors made from wood
or class A, B, or C roof covering material.
Units must be installed outdoors. Overhanging structures or
shrubs should not obstruct condenser air discharge outlet.
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341426-BIM-A-0108
1
9
-
1
/
4
1
1
-
7
/
8
H
C
K
I
O
G
H
V
O
L
T
A
G
E
8
-
7
/
8
N
N
.
1
-
3
/
3
2
"
D
I
A
.
F
R
O
N
T
N
O
C
K
O
U
T
G
K
C
A
S
S
U
P
P
L
Y
1
-
5
/
8
"
D
I
A
.
N
O
C
K
O
U
T
T
(
1
/
2
"
N
P
T
I
O
N
N
E
C
I
O
N
)
L
1
O
/
W
V
O
L
T
A
G
E
C
O
N
N
.
8
"
D
I
A
.
K
N
O
C
K
O
U
T
4
-
5
/
8
C
D
O
R
N
D
E
N
S
A
T
E
A
I
N
3
/
4
"
'
N
P
T
I
2
6
-
3
/
4
6
FIGURE 8 - UNIT DIMENSIONS - FRONT & BOTTOM
1
4
-
1
/
2
S
A
I
I
D
R
E
S
U
P
P
L
Y
O
P
E
N
I
N
G
2
8
-
3
/
8
C
O
N
D
E
N
S
E
R
C
O
I
L
1
4
-
1
/
2
B
A
C
K
B
O
T
T
O
M
S
U
P
P
L
Y
A
I
R
O
P
E
N
I
N
G
3
-
3
/
8
S
I
D
E
R
E
T
U
R
N
A
I
R
O
P
E
N
I
N
G
1
4
-
1
/
2
3
-
1
/
2
4
1
-
3
/
4
1
5
1
5
1
-
3
/
4
1
5
B
O
T
T
O
M
R
E
T
U
R
N
A
I
R
O
P
E
N
I
N
G
3
-
1
/
2
2
9
-
9
/
1
6
1
-
3
/
4
FIGURE 9 - UNIT DIMENSIONS - BACK & BOTTOM
12
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begins pressure switch proving before an inter-purge and re-
ignition attempt.
SEQUENCE OF OPERATION
The unit is controlled by a conventional heating/cooling ther-
mostat common to this class of equipment.
PILOT FLAME STABILIZATION PERIOD
The control board de-energizes the spark output, and waits
for a 2 second flame stabilization period before energizing the
main gas valve.
HEATING
The control board begins a call for heat when W1 is ener-
gized (connected to R). The control ignores W2 until pilot
ignition has been established.
If flame is lost during the flame stabilization period, the con-
trol board counts it as a flame loss and retries ignition or locks
out flashing a "5" on the LED.
The control checks to see if the pressure switch is open. If the
pressure switch is closed, the control board flashes "3" on the
LED and waits indefinitely for it to open. When the pressure
switch is sensed as open, the control begins pressure switch
proving period. If the call for heat is lost, the control goes
back to Standby.
HEAT BLOWER ON DELAY
The control board waits for 30 seconds and then energizes
the indoor blower heat speed. Blower on delay time begins at
the start of flame proving period in the trial for ignition.
PRESSURE SWITCH PROVING
If the thermostat demand for heat is removed, the control de-
energizes the gas valve, energizes the blower on heat speed
and initiates a post-purge and heat blower off delay.
The control board energizes the induced draft motor (High
speed for 2 stage model) and waits for the low pressure
switch to close. When the low pressure switch closes, the
control begins Pre-purge period. If the call for heat is lost, the
control de-energizes the inducer without post-purge and
returns to standby.
MAIN BURNER OPERATION
High heat warm-up
Two stage models run high heat for the first 60 seconds fol-
lowing Pilot Flame Stabilization period regardless of W2
demand. If W2 is not energized at the end of this 60 second
period the control de energizes the high gas output and steps
the inducer to low speed. If W2 is energized the control
remains on high heat.
If the low pressure switch does not close within 10 seconds of
inducer energizing, the control board flashes "2" on the LED.
If the pressure switch does not close within 5 minutes of
inducer energizing, the control shuts off the inducer for 30
seconds, then energizes the inducer for another 5 minute try
to close the pressure switch. This cycle continues indefinitely
until either the pressure switch is proved closed, or the call
for heat ends.
There is no high heat warm-up on single stage models
Low heat
PRE-PURGE
The control board keeps the pilot gas valve, main gas valve
and induced draft motor energized while continuously moni-
toring the call for heat, low pressure switch, and flame status.
The control board monitors the low pressure switch and
ensures it remains closed during pre-purge. If the pressure
switch opens, the control goes back to pressure switch prov-
ing mode. The control waits for a 15 second pre-purge
period, then begins the ignition trial
If the call for heat (W1) is lost, the control de-energizes the
gas valve and begins post purge.
If low pressure switch opens, the control de-energizes the
gas valve and begins pressure switch proving mode.
IGNITION TRIAL PERIOD
The control board energizes the pilot gas valve and spark
outputs for an 85 second Ignition trial. The control de-ener-
gizes the spark when flame is sensed and enters a flame sta-
bilization period.
If flame is lost, the control de-energizes the gas valve within
2.0 second and counts the flame loss. If flame has been lost
more than 16 times within the same call for heat, the control
board locks out flashing "5" on the LED. If flame has been
lost less than 16 times, the control attempts re-ignition after a
300 second inter-purge period.
If flame is not established within the ignition trial period, the
control de-energizes the spark and gas valve and begins an
inter-purge period before attempting another ignition trial.
High heat
If the call for heat is lost during an ignition trial period, the
control immediately de-energizes spark and gas. The control
runs the inducer motor through a post purge period before
de-energizing.
If the W2 terminal was energized more than 1 second before
W1 at the start of the call for heat, and remains continuously
energized through the call for heat, the control considers it to
be connected to a single stage thermostat and implements a
10 minute Auto staging feature. The 2nd stage thermostat
call is ignored until 10 minutes into steady heat (9 minutes
after high heat warm-up ended).
If the pressure switch is lost during an ignition trial period, the
control immediately de-energizes spark and gas. The control
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The control recognizes a call for 2nd stage heat when W2 is
energized (connected to "R"). The control energizes the high
gas output and induced draft motor on high speed.
Rollout switch lockout shall not reset automatically.
POWER INTERRUPTIONS
Power interruptions of any duration shall not cause lockout or
any operation requiring manual intervention.
If the call for 2nd stage heat goes away and the 1st stage call
remains, the control de energizes the high gas valve, drops
inducer speed to low, and returns to low heat operation.
FLAME PRESENT WITH GAS OFF
Response to loss of W1, low pressure switch, and flame are
identical to low heat operation.
If flame is sensed for longer than 4.0 seconds during a period
when the gas valve should be closed, the control will enter
lockout flashing "8" on the LED. The control will turn on the
inducer blower while the flame is present.
POST PURGE
The control board runs the induced draft motor for a 30 sec-
ond post-purge period, and then de-energizes the inducer. If
a call for heat occurs during post-purge, the control finishes
the post-purge, drops inducer out to re-prove open pressure
switch before continuing with the heat cycle.
GAS VALVE STUCK OPEN OR CLOSED
If either or both Pilot and Main Gas valve outputs are sensed
to be off for more than 1 second when commanded to be on,
the control board shuts off all outputs and enters a hard
lockout flashing "9" on the LED.
HEAT BLOWER OFF DELAY
If the Pilot valve or Main valve output is sensed to be
energized for more than 1 second when commanded to be
off, the control de-energizes the induced draft motor (if flame
is not present) to attempt to open the pressure switch to de-
energize the gas valve. If the pilot or main gas valve is still
sensed as energized after the inducer has been off for 5
seconds, the control re-energizes the inducer to attempt to
vent the unburned gas. In either case, the control enters a
hard lockout flashing "9" on the LED. If the pilot or main valve
becomes Un-Welded the inducer will de-energize, but the
control will remain in a hard lockout and not respond to any
thermostat demands.
The control board de-energizes the indoor blower motor after
a delay time as selected by movable shunt (60, 90, 120 or
180 seconds). Blower timing begins when the thermostat is
satisfied or heat cycle was interrupted. The control returns to
standby when the blower off delay is complete.
If the thermostat call for heat returns before the blower off
delay is complete, the control begins an ignition sequence
with pre-purge while the blower off delay continues.
LOCKOUT
While in lockout, the control board keeps the pilot gas valve,
main gas valve and induced draft motor de-energized.
The only way to recover from a hard lockout is to remove and
then reapply 24VAC power to the control board.
Lockouts due to failed ignition or flame losses may be reset
by removing the call for heat (W1) for more than 1 second,
but less than 20 seconds, or by removing power from the
control for over 0.25 seconds. The control will automatically
reset lockout after 60 minutes.
FLAME SENSE CIRCUIT FAILURE
If the control detects an internal hardware failure in the flame
sense circuit, it shuts off all outputs and enters a hard lockout
flashing "10" on the LED. The control will not respond to
thermostat demands during a hard lockout.
Lockouts due to detected internal control faults will reset after
60 minutes or power interruption.
The only way to recover from a hard lockout is to remove and
then reapply 24VAC power to the control. If problem persist
after removal and reapplication of 24VAC power, the board
may need to be replaced.
HIGH TEMPERATURE LIMIT SWITCH
Any time the high temperature limit switch is open the control
board will run the indoor blower motor on heat speed, the
inducer (on high speed for 2 stage models), de-energize the
gas valve, and flash "6" on the LED. When the high tempera-
ture switch closes, the control will restart the ignition
sequence beginning with pre-purge.
SAFETY CONTROLS
The control circuit includes the following safety controls:
1. Limit Switch (LS) - This control is located inside the
heat exchanger compartment and is set to open at the
temperature indicated in the Temperature Controls Table
of the unit wiring diagram. It resets automatically. The
limit switch operates when a high temperature condition
caused by inadequate supply air flow occurs, thus shut-
ting down the ignition control and closing the main gas
valve and energizing the blower.
ROLLOUT SWITCH
If the rollout switch opens for more than 0.25 seconds, the
control board will run the inducer (on high speed for 2 stage
models) for a post-purge period, immediately de-energize the
gas valve, and flash "7" on the LED. The blower output will be
energized during an open rollout condition.
If the rollout switch closes, the control shall remain locked out
until power removed or "W" is removed.
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2. Pressure Switch (PS) - If the draft motor should fail, the
pressure switch prevents the ignition controls and gas
valves from being energized.
CIRCULATING FAN
When the thermostat calls for FAN, the thermostat terminal G
is energized signaling the circulating fan to run at the cool
speed.
3. Flame Sensor - The flame sensor and controls are
ignition control fails to detect a signal from the flame sen-
sor indicating the pilot flame is properly ignited, then the
main gas valve will not open.
If a call for COOL occurs, the circulating fan continues to run
at the cool speed.
If a call for HEAT occurs, the circulating fan switches to heat
speed after a 30 second delay.
4. Rollout Switch (RS) - This switch is located in the
burner vestibule. In the event of a sustained main burner
flame rollout, it shuts off the ignition control and closes
the main gas valve.
When the thermostat ends the call for FAN, the thermostat
terminal G is de-energized, de-energizing the circulating fan.
NOTE: The manual reset Rollout Switch (RS) must be reset
before allowing furnace operation.
START-UP
5. Auxiliary Limit Switch (ALS) - This control is located
inside the heat exchanger compartment and is set to
open at 160°F. It is a manual reset switch. If ALS trips,
then the primary limit (LS) has not functioned correctly.
Replace the primary limit LS.
PRE-START CHECK LIST
Complete the following checks before starting the unit.
1. Check the type of gas being supplied. Be sure that it is
the same as listed on the unit nameplate.
TABLE 11: IGNITION CONTROL BOARD FLASH
CODES
2. Make sure that the vent outlet air hoods has been prop-
erly installed.
Flash Code
Heart Beat
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
9 Flashes
10 Flashes
Description
OPERATING INSTRUCTIONS
Normal Operation
Pressure switch open with inducer on
Pressure switch closed with inducer off
Not Used
1. STOP! Read the information on the unit safety label.
2. Set the thermostat to the OFF position.
3. Turn off all electrical power to the unit.
Lockout from too many flame losses
High temperature switch open
Rollout switch open
4. DO NOT try to light the burners by hand. This appliance
is equipped with an ignition device which automatically
lights the burners.
Flame present with gas off
Gas valve stuck OFF or ON
Flame sense circuit failure
5. Remove the access panel.
6. Turn the gas valve switch to the OFF position.
7. Wait five (5) minutes to clear out any gas. If you then
smell gas, STOP! Follow B in the information on the unit
safety label. If you don't smell gas, go to the next step.
COOLING
When the thermostat calls for COOL, the thermostat termi-
nals G and Y are energized signaling the compressor and
outdoor fan to run.
8. Turn the gas valve switch to the ON position.
9. Replace the control access panel.
With a call for Y, the circulating fan is energized at cooling
speed.
10. Turn on all electric power to the unit.
11. Set the thermostat to the desired setting.
When the thermostat is satisfied, terminals G and Y are de-
energized, de-energizing the compressor and outdoor fan.
12. If the unit will not operate, follow the instructions To Turn
Off Gas To Appliance and call your service technician or
gas supplier.
After a cool fan off delay timing of 30 seconds the circulating
fan is de-energized.
TO TURN OFF GAS TO UNIT
1. Set the thermostat to the OFF position.
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2. Turn off all electric power to the appliance if service is to
be performed.
3. Remove the control access panel.
4. Turn the gas valve switch to the OFF position. DO NOT
FORCE.
5. Replace the control access panel.
POST-START CHECK LIST (GAS)
After the entire control circuit has been energized and the
heating section is operating, make the following checks:
Line
Pressure
Tap
½ NPT
(Inlet)
1. Check for gas leaks in the unit piping as well as the sup-
ply piping.
2. Check for correct manifold gas pressures. See Checking
Gas Input.
FIGURE 11 - GAS VALVE - REAR
Adjust as follows:
3. Check the supply gas pressure. It must be within the lim-
its shown on rating nameplate. Supply pressure should
be checked with all gas appliances in the building at full
fire. At no time should the standby gas line pressure
exceed 10.5", nor the operating pressure drop below
4.5" for natural gas units. If gas pressure is outside these
limits, contact the local gas utility for corrective action.
location.
2. To decrease the gas pressure, turn the adjusting screw
counterclockwise.
3. To increase the gas pressure, turn the adjusting screw
clockwise.
MANIFOLD GAS PRESSURE ADJUSTMENT
Small adjustments to the gas flow may be made by turning
the pressure regulator adjusting screw on the automatic gas
NOTE: The correct manifold pressure for natural gas fur-
naces is 3.5 IWG. The correct manifold pressure for
propane (LP) is 10.0 IWG.
BURNER INSTRUCTIONS
Manual
To check or change the burners, CLOSE THE MAIN MAN-
UAL SHUT-OFF VALVE AND SHUT OFF ALL POWER TO
THE UNIT.
Gas Switch
Pilot
Adjustment
(Remove Cap)
Electrical
Connection
1. Remove the two (2) #8 screws holding each burner in
place.
2. Remove the burner assembly from the manifold assem-
bly by moving the burner assembly forward, turn at an
angle and pull back.
Manifold
Pressure
Adjustment
(Remove Cap)
½ NPT
(Outlet)
3. Burners are now accessible for service.
PILOT INSTRUCTIONS
Pilot Gas
Manifold
Pressure Tap
Connection
To check, adjust or remove the pilot assembly, CLOSE THE
MAIN MANUAL SHUT-OFF VALVE AND SHUT OFF ALL
POWER TO THE UNIT.
FIGURE 10 - GAS VALVE - FRONT
The pilot flame should envelope 3/8 inch of the end of the
flame sensor and not contain any yellow color, see Figure 12.
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The temperature rise (or temperature difference between the
return air and the heated air from the furnace) must lie within
the range shown on the rating plate and the data in Tables 3
and 4.
3
"
8
min.
After the temperature rise has been determined, the CFM can
be calculated as follows:
After about 20 minutes of operation, determine the furnace
temperature rise. Take readings of both the return air and the
heated air in the ducts about six feet from the furnace where
they will not be affected by radiant heat. Increase the blower
CFM to decrease the temperature rise; decrease the blower
CFM to increase the rise.
Spark Ignitor
Pilot Flame Sensor
DIRECT DRIVE BLOWER
All units have direct drive multi-speed blower motors. Refer to
the unit wiring diagram and connect the blower motor for the
desired motor speed.
FIGURE 12 - PROPER FLAME ADJUSTMENT
To adjust the pilot flame:
CHECKING GAS INPUT
NATURAL GAS
1. Remove the pilot adjustment cover screw.
2. Adjust the pilot adjustment screw to achieve the proper
pilot flame.
1. Turn off all other gas appliances connected to the gas
meter.
3. Replace the pilot adjustment cover screw after the pilot
flame is set.
2. With the furnace turned on, measure the time needed for
one revolution of the hand on the smallest dial on the
meter. A typical gas meter usually has a 1/2 or a 1 cubic
foot test dial.
To remove the pilot assembly:
1. Disconnect the wiring from the control board to the pilot
assembly.
3. Using the number of seconds for each revolution and the
size of the test dial increment, find the cubic feet of gas
2. Remove the two (2) #8 screws holding the pilot assem-
bly in place.
3. Remove the pilot assembly.
If the actual input is not within 5% of the furnace rating with
allowance being made for the permissible range of the regu-
lator setting, replace the orifice spuds with spuds of the
proper size.
ADJUSTMENT OF TEMPERATURE RISE
NOTE: To find the BTU input, multiply the number of cubic
feet of gas consumed per hour by the BTU content
of the gas in your particular locality. (Contact your
gas company for this information since it varies
widely from city to city.)
BTUH Output
1.08 × CFM
-----------------------------------
Degrees F Temp Rise =
OR
BTUH Output
-------------------------------------------------------------------------
CFM =
1.08 × Degrees F Temp Rise
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CHECKING SUPPLY AIR CFM
1
TABLE 12: GASE RATE - CUBIC FEET PER HOUR
SECONDS
FOR ONE
REV.
SIZE OF TEST DIAL
To check the supply air CFM after the initial balancing
has been completed:
1/2 CU. FT.
1 CU. FT.
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
180
150
129
113
100
90
82
75
69
64
60
56
53
50
47
45
43
41
39
37
36
35
34
32
31
30
360
300
257
225
200
180
164
150
138
129
120
113
106
100
95
1. Remove the two ¼ inch dot plugs in the duct panel.
2. Insert at least 8 inches of ¼ inch tubing into each of
these holes for sufficient penetration into the airflow on
both sides of the indoor coil.
3. Using an inclined manometer, determine the pressure
drop across the dry evaporator coil. Since the moisture
on an evaporator coil may vary greatly, measuring the
pressure drop across a wet coil under field conditions
would be inaccurate. To ensure a dry coil, the compres-
sors should be deactivated while the test is being run.
4. Knowing the pressure drop across a dry coil, the actual
CFM through the unit can be determined from the curve
in Coil Delta P vs. Supply Air CFM figure.
90
86
82
Failure to properly adjust the total system air quan-
tity can result in extensive system damage.
78
75
72
After readings have been obtained, remove the tubes and
reinstall the two ¼ inch plugs removed in Step 1.
69
67
64
De-energize the compressors before taking any test mea-
surements to ensure a dry indoor coil.
62
60
1.
EXAMPLE: By actual measurement, it takes 38 seconds for the
hand on the 1-cubic foot dial to make a revolution with just a
100,000 BTUH furnace running. Using this information, locate
column headed “1 Cubic Foot,” where you will see that 95 cubic
feet of gas per hour are consumed by the furnace at that rate.
Multiply 95 x 1050 (the BTU rating of the gas obtained from the
local gas company). The result is 99,750 BTUH, which is close
to the 100,000 BTUH rating of the furnace.
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DYA Coil Delta P vs Airflow
DYA042
DYA048 - 060
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
DYA036
DYA036
DYA042
DYA048-060
400
600
800
1000
1200
1400
1600
1800
2000
2200
Airflow (CFM)
FIGURE 13 - DYA COIL DELTA P VS. AIRFLOW
TABLE 13: SUPERHEAT CHARGING TABLE FOR DYA036
SUPERHEAT AT COMPRESSOR SUCTION (F), AIRFLOW = 400 CFM
INDOOR WB TEMP. (°F)
OUTDOOR
TEMP. °F
55
27.1
23.3
19.5
15.7
11.9
8.6
5.3
-
57
28.4
24.8
21.1
17.5
13.8
10.6
7.4
5.6
-
59
29.7
26.2
22.7
19.2
15.7
12.6
9.5
7.6
5.7
-
61
31.1
27.7
24.4
21.0
17.6
14.6
11.5
9.6
63
65
67
69
71
73
75
65
70
32.4
29.2
26.0
22.8
19.6
16.6
13.6
11.6
9.6
33.7
30.6
27.6
24.5
21.5
18.6
15.7
13.6
11.5
9.4
35.0
32.1
29.2
26.3
23.4
20.6
17.8
15.6
13.5
11.3
9.2
35.9
33.5
31.2
28.8
26.5
24.1
21.7
20.1
18.4
16.7
15.0
36.8
34.9
33.1
31.3
29.5
27.6
25.7
24.5
23.3
22.1
20.9
37.6
36.4
35.1
33.8
32.6
31.1
29.7
28.9
28.2
27.4
26.7
38.5
37.8
37.1
36.3
35.6
34.6
33.7
33.4
33.1
32.8
32.5
75
80
85
90
95
100
105
110
115
-
7.6
-
-
5.6
7.5
-
-
-
-
5.5
7.4
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TABLE 14: SUPERHEAT CHARGING TABLE FOR DYA042
SUPERHEAT AT COMPRESSOR SUCTION (F), AIRFLOW = 400 CFM
INDOOR WB TEMP. (°F)
OUTDOOR
TEMP. °F
55
57
59
61
23.0
19.3
15.5
11.7
7.9
6.7
5.5
-
63
24.7
21.2
17.8
14.3
10.8
9.3
7.8
6.3
-
65
26.3
23.2
20.0
16.9
13.7
11.9
10.2
8.0
67
28.0
25.2
22.3
19.5
16.6
14.6
12.5
9.8
69
71
73
75
65
70
18.0
19.7
21.4
29.1
26.6
24.2
21.7
19.3
17.4
15.5
12.9
10.3
7.8
30.2
28.1
26.1
24.0
21.9
20.2
18.5
16.1
13.7
11.2
8.8
31.3
29.6
28.0
26.3
24.6
23.1
21.5
19.2
16.9
14.7
12.4
32.4
31.1
29.9
28.6
27.3
25.9
24.5
22.4
20.3
18.1
16.0
13.4
15.3
17.3
75
8.7
10.9
13.2
80
-
-
-
-
-
-
-
-
6.6
9.1
85
-
-
-
-
-
-
-
5.1
90
-
-
-
-
-
-
95
100
105
110
115
-
5.9
7.1
-
-
-
-
-
-
-
-
5.2
TABLE 15: SUPERHEAT CHARGING TABLE FOR DYA048
SUPERHEAT AT COMPRESSOR SUCTION (F), AIRFLOW = 400 CFM
INDOOR WB TEMP. (°F)
OUTDOOR
TEMP. °F
55
20.9
17.6
14.4
11.1
7.8
5.8
-
57
21.8
18.7
15.5
12.4
9.2
7.0
-
59
22.7
19.7
16.6
13.6
10.6
8.2
5.8
5.4
-
61
23.6
20.7
17.8
14.9
12.0
9.3
6.7
6.0
5.3
-
63
24.4
21.7
18.9
16.1
13.3
10.5
7.7
6.7
5.7
-
65
25.3
22.7
20.0
17.4
14.7
11.7
8.6
7.4
6.1
-
67
26.2
23.7
21.2
18.6
16.1
12.9
9.6
8.0
6.5
-
69
71
73
75
65
70
27.4
25.2
22.9
20.7
18.4
15.7
13.0
11.6
10.2
8.7
28.6
26.6
24.7
22.7
20.8
18.6
16.5
15.2
13.9
12.6
11.3
29.8
28.1
26.4
24.8
23.1
21.5
19.9
18.7
17.6
16.4
15.3
31.0
29.6
28.2
26.8
25.4
24.4
23.3
22.3
21.3
20.3
19.3
75
80
85
90
95
100
105
110
115
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7.3
TABLE 16: SUPERHEAT CHARGING TABLE FOR DYA060
SUPERHEAT AT COMPRESSOR SUCTION (F), AIRFLOW = 400 CFM
INDOOR WB TEMP. (°F)
OUTDOOR
TEMP. °F
55
57
9.2
8.4
7.6
6.8
6.0
-
59
11.4
10.7
9.9
9.2
8.4
6.5
-
61
13.6
13.0
12.3
11.6
10.9
8.7
6.5
5.9
5.3
-
63
15.9
15.2
14.6
14.0
13.3
10.8
8.3
65
18.1
17.5
16.9
16.3
15.8
12.9
10.1
8.6
67
69
71
73
75
65
70
7.0
20.3
19.8
19.3
18.7
18.2
15.1
11.9
10.0
8.0
21.8
21.2
20.7
20.2
19.6
17.1
14.5
12.9
11.3
9.6
23.2
22.7
22.2
21.6
21.1
19.1
17.1
15.8
14.5
13.2
11.8
24.7
24.1
23.6
23.1
22.5
21.1
19.7
18.7
17.7
16.7
15.7
26.1
25.6
25.0
24.5
23.9
23.1
22.3
21.6
20.9
20.2
19.6
6.1
75
5.3
80
-
-
-
-
-
-
-
-
85
90
95
-
100
105
110
115
-
-
7.3
-
-
6.2
7.1
-
-
5.2
5.6
6.1
-
-
-
-
-
-
8.0
20
Johnson Controls Unitary Products
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341426-BIM-A-0108
MED SPEED
BLK (HI)
LOW SPEED
HI SPEED
BLK (HI)
BLK (HI)
(BR-LI)
BLK / WHT
BLU (MED)
BLU / WHT
RED (LOW)
BLK / WHT
BLU (MED)
BLU / WHT
RED (LOW)
BLK / WHT
BLU (MED)
BLU / WHT
RED (LOW)
(BR-LI)
(BR-LI)
1
FIGURE 16: WIRING DIAGRAM DETAIL A (460-3-60 POWER SUPPLY)
1.
801/BL and 805/BL are connected to M1 coil. If only
ASCT is present wire 202/Y is connected to ASCT-3. If
neither LR or ASCT are present, wire 202/Y is connected
to M1 coil as shown.
TYPICAL WIRING DIAGRAM NOTES
(SEE FIGURES 14 AND 15)
1. All field wiring to be accomplished following city, local
and/or national codes in effect at time of installation of
this unit.
7. Shunt contact also used with crankcase heater.
(optional)
2. Caution: Label all wires prior to disconnection when ser-
vicing controls. Wiring errors can cause improper and
dangerous operation. If any of the wire as supplied with
this unit must be removed it must be replaced with type
105°C, 600V wire or equivalent clearly renumbered for
identification. Verify proper operation after servicing.
8. Unit factory wired for low or medium speed indoor blower
operation. To change motor speed, connect speed tap
Tape unused speed tap wires to prevent shorting and
secure.
9. Select indoor blower speed to remain within the temper-
ature rise range on the nameplate in heating.
3. Motors inherently protected.
4. Factory wired for 460V operation.
5. See unit nameplate for maximum fuse size and/or circuit
breaker size and minimum circuit ampacity.
6. If both LR and ASCT are present, wire 801/BL and 805/
BL are connected to ASCT-3. If only LR is present wire
Open all disconnects before servicing this unit.
Johnson Controls Unitary Products
23
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LEGEND
ALS
ASCT
BR
AUXILARY LIMIT SWITCH
ANTI-SHORT CYCLE TIMER (OPTIONAL)
BLOWER RELAY
CB
CIRCUIT BREAKER
CCH
COMPR
DM
CRANK CASE HEATER (OPTIONAL)
COMPRESSOR
DRAFT MOTOR
FCB
GND
FS
FAN CONTROL BOARD
GROUND
FREEZE STAT SWITCH (OPTIONAL)
HIGH PRESSURE SWITCH OPENS @ 380 PSIG
INDOOR FAN MOTOR
HP
IDFAN
LP
LOW PRESSURE SWITCH OPENS @ 7 PSIG
LIMIT SWITCH
LS
LR
LOCK OUT RELAY (OPTIONAL)
CONTACTOR, COMPR. AND OD FAN
OUTDOOR FAN MOTOR
M1
ODFAN
PS
PRESSURE SWITCH
RC1 / RC2
RS
COMPRESSOR START & OUTDOOR FAN RUN CAPACITOR
ROLLOUT SWITCH
TB4
T1
TERMINAL BLOCK
TRANSFORMER, 24V, 230V
TRANSFORMER, 460V / 575V
T2
FIGURE 17 - TYPICAL WIRING DIAGRAM LEGEND
Subject to change without notice. Printed in U.S.A.
341426-BIM-A-0108
Copyright © 2008 by Johnson Controls, Inc. All rights reserved.
Supersedes: 284590-BIM-B-0807
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069
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