installation and
start-up instructions
TWO-SPEED PURON® PLUS
AIR CONDITIONING UNIT
598B
Cancels: II 598B-24-3
II 598B-24-4
5-03
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
SAFETY CONSIDERATIONS
O
-
S
P
W
E
•
E
D
•
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
™
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions thor-
oughly and follow all warnings or cautions included in literature
and attached to the unit. Consult local building codes and National
Electrical Code (NEC) for special requirements.
A01050
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Fig. 1—Model 598B
3. Run refrigerant tubes as directly as possible by avoiding
unnecessary turns and bends.
Understand these signal words; DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
4. Leave some slack between structure and unit to absorb
vibration.
5. When passing refrigerant tubes through the wall, seal
opening with RTV or other pliable silicon-based caulk. (See
Fig. 2.)
6. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.
WARNING: Before installing, modifying, or servicing
system, main electrical disconnect switch must be in the
OFF position. There may be more than 1 disconnect
switch. Lock out and tag switch with a suitable warning
label. Electrical shock can cause personal injury or death.
7. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with
tubing. (See Fig. 2.)
8. Ensure that tubing insulation is pliable and completely
surrounds vapor tube.
9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 2.)
CAUTION: Puron® (R-410A) systems operate at higher
pressures than standard R-22 systems. Be certain that
service equipment is rated for Puron®. Some R-22
service equipment may not be acceptable. Check with
your distributor.
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
When outdoor unit is connected to factory-approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
indoor unit of the same size when connected by 15 ft of
field-supplied or factory accessory tubing. For proper unit opera-
tion, check refrigerant charge using charging information located
on control box cover.
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installation of equipment.
IMPORTANT: Maximum liquid-line size is 3/8-in. O.D. for all
1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.
residential applications.
IMPORTANT: Always install the factory-supplied Puron® air
conditioner liquid line filter drier. Obtain replacement filter driers
from your local distributor or branch.
2. Ensure that vapor and liquid tube diameters are appropriate
to capacity of unit.
—1—
2. Remove coil access panel and fitting panel from front of
cabinet.
B
3. Remove TXV support clamp using the 5/16-in. nut driver.
Save the clamp.
4. Remove TXV using a backup wrench on flare connections
to prevent damage to tubing.
INLET
A
D
5. Using wire cutters, cut equalizer tube off flush with vapor
tube inside cabinet.
COIL
6. Remove bulb from vapor tube inside cabinet.
7. Braze equalizer stub-tube closed. Use protective barrier as
necessary to prevent damage to drain pan.
E
BULB
INSULATION
TAPE
IMPORTANT: Route the equalizer tube of approved Puron®
TXV through suction line connection opening in fitting panel prior
to replacing fitting panel around tubing.
C
8. Install TXV with 3/8-in. copper tubing through small hole
in service panel. (See Fig. 5A.) To avoid damage to tubing
or valve, use wrench and backup wrench to attach TXV to
distributor.
A01418
Fig. 5—TXV Kit Contents
INSTALLING TXV IN PLACE OF PISTON
9. Reinstall TXV support clamp (removed in item 3).
10. Attach TXV bulb to vapor tube inside cabinet, in same
location as original was when removed, using supplied bulb
strap. (See Fig. 5C.) See Fig. 6 for correct positioning of
sensing bulb.
1. Remove any existing refrigerant and ensure coil has not
been exposed to atmospheric pressure for more than 15
minutes.
2. Remove indoor coil inlet tube at piston body inlet. Use
back-up wrench to prevent damage.
11. Route equalizer tube through suction connection opening
(large hole) in fitting panel and install fitting panel in place.
3. Remove piston retainer, begin careful not to damage scaling
surface of O-ring.
12. Sweat inlet of TXV, marked “IN” to liquid line. Avoid
excessive heat which could damage valve.
4. Remove and discard factory-installed piston. (Replace re-
tainer if O-ring is damaged.)
13. Install vapor elbow with equalizer adapter to vapor line of
line set and vapor connection to indoor coil. (See Fig. 5B.)
Adapter has a 1/4-in. male connector for attaching equalizer
tube. (See Fig. 5B.)
5. Reinstall piston retainer in piston body.
6. Replace indoor coil inlet tube. Use back-up wrench to
prevent damage.
14. Connect equalizer tube of TXV by 1/4-in. equalizer fitting,
on vapor line adapter. Use backup wrench to prevent
damage to equalizer fitting.
CAUTION: To prevent damage to the unit, use a brazing
shield and wrap TXV with wet cloth.
15. Proceed with the remainder of unit installation.
7. Sweat swivel adapter (see Fig. 5D) to inlet of indoor coil
and attach to TXV (see Fig. 5A) outlet. Use backup wrench
to avoid damage to tubing or valve. Sweat Inlet of TXV,
marked “IN” to liquid line. Avoid excessive heat which
could damage valve
B. LONG-LINE APPLICATIONS
For refrigerant piping arrangements with equivalent lengths
greater than 50 ft or when elevation difference between indoor
and/or outdoor unit is more than 20 ft, follow all requirements of
the Long-Line Guideline section in the Application Guideline and
Service Manual for Residential Split-System Air Conditioners and
Heat Pumps Using Puron Refrigerant.
8. Install vapor elbow (see Fig. 5B) with equalizer adapter to
suction tube of line set and suction connection to indoor
coil. Adapter has a 1/4-in. male connector or attaching
equalizer tube.
VI. MAKE PIPING CONNECTIONS
9. Connect equalizer tube of TXV to 1/4-in. equalizer fitting
on vapor line adapter.
WARNING: Relieve pressure and recover all refrigerant
before system repair or final unit disposal to avoid
personal injury or death. Use all service ports and open all
flow-control devices, including solenoid valves.
10. Attach TXV bulb to horizontal section of suction line using
bulb straps provided. (See Fig. 5C.) Insulate bulb with
factory-supplied insulation tape. (See Fig. 5E.) See Fig. 6
for correct positioning of sensing bulb.
11. Proceed with remainder of unit installation.
CAUTION: Do not leave system open to atmosphere
any longer than minimum required for installation. POE
oil in compressor is extremely susceptible to moisture
absorption. Always keep ends of tubing sealed during
installation.
REPLACING R-22 TXV OR NON-BALANCE PORT
PURON TXV
1. Remove any existing refrigerant and ensure coil has not
been exposed to atmospheric pressure for more than 15
minutes.
—3—
SENSING BULB
CAUTION: If ANY refrigerant tubing is buried, provide
6–in. vertical rise at service valve. Refrigerant tubing
lengths up to 36 in. may be buried without further special
consideration. Buried refrigerant tubing lengths greater
than 36 in. are NOT recommended.
STRAP
SUCTION
TUBE
CAUTION: To prevent damage to unit or service valves,
observe the following:
8 O'CLOCK
4 O'CLOCK
A02000
• Use a brazing shield.
• Wrap service valves with wet cloth or use a heat sink
material.
Fig. 6—Positioning of Sensing Bulb
CAUTION: To avoid valve damage while brazing, ser-
vice valves must be wrapped in heat-sink material, such
as a wet cloth.
Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refrigerant grade tubing of correct
size and condition. Tubing diameters listed in Table 1 are adequate
for equivalent lengths up to 50 ft. For tubing requirements beyond
50 ft, substantial capacity and performance losses can occur.
Follow the recommendations in the Application Guideline and
Service Manual for Residential Split-System Air Conditioners and
Heat Pumps Using Puron® Refrigerant to minimize losses. Refer
to Table 1 for field tubing diameters. Refer to Table 2 for
accessory requirements.
D. SWEAT CONNECTION
Service valves are closed from factory and ready for brazing. After
wrapping service valve and filter drier with a wet cloth, braze
sweat connections using industry accepted methods and materials.
Do not use soft solder (materials which melt below 800°F).
Consult local code requirements. Refrigerant tubing and indoor
coil are now ready for leak testing. This check should include all
field and factory joints.
If refrigerant tubes or indoor coil are exposed to atmosphere, they
must be evacuated to 500 microns to eliminate contamination and
moisture in the system.
IMPORTANT: Check factory tubing on both indoor and outdoor
unit to ensure tubes are not rubbing against each other or any sheet
metal. Pay close attention to feeder tubes making sure wire ties on
feeder tubes are secure and tight.
TABLE 1—REFRIGERANT CONNECTIONS AND
RECOMMENDED LIQUID AND VAPOR TUBE
DIAMETERS (IN.)
E. LEAK CHECKING
Leak test all joints in indoor, outdoor, and refrigerant tubing.
F. EVACUATE REFRIGERANT TUBING AND INDOOR
COIL
LIQUID
Connection Tube Connection Tube
Diameter Diameter Diameter Diameter Diameter Diameter
VAPOR
VAPOR (LONG-LINE)
Connection Tube
UNIT
SIZE
024
036
048
060
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
5/8
3/4
7/8
7/8
5/8
3/4
7/8
5/8
3/4
7/8
7/8
3/4
7/8
7/8
CAUTION: Never use the system compressor as a
vacuum pump.
1-1/8
1-1/8
Notes:
1. Tube diameters are for lengths up to 50 equivalent ft.
2. Do not apply capillary tube indoor coils to these units.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used if the procedure outlined
below is followed. Always break a vacuum with dry nitrogen.
A. OUTDOOR UNIT CONNECTED TO FACTORY-
APPROVED INDOOR UNIT
DEEP VACUUM METHOD
The deep vacuum method requires a vacuum pump capable of
pulling a vacuum of 500 microns and a vacuum gage capable of
accurately measuring this vacuum depth. The deep vacuum
method is the most positive way of assuring a system is free of air
and liquid water. (See Fig. 8.)
Outdoor unit contains correct system refrigerant charge for opera-
tion with indoor unit of same size when connected by 15 ft of
field-supplied or factory-accessory tubing. Check refrigerant
charge for maximum efficiency
CAUTION: Installation of filter drier in liquid line is
TRIPLE EVACUATION METHOD
required.
The triple evacuation method should only be used when vacuum
pump is capable of pumping down to 28 in. of mercury and system
does not contain any liquid water. Refer to Fig. 9 and proceed as
follows:
B. INSTALL LIQUID-LINE FILTER DRIER
1. Pump system down to 28 in. of mercury and allow pump to
continue operating for an additional 15 minutes.
Installation of filter drier in liquid line is required. Refer to Fig. 7
and install filter drier as follows:
2. Close service valves and shut off vacuum pump.
1. Braze 5-in. connector tube to liquid service valve. Wrap
filter drier with damp cloth.
3. Connect a nitrogen cylinder and regulator to system and
open until system pressure is 2 psig.
2. Braze filter drier between connector tube and liquid tube to
indoor coil. Flow arrow must point toward indoor coil.
4. Close service valve and allow system to stand for 1 hr.
During this time, dry nitrogen will be able to diffuse
throughout the system, absorbing moisture.
C. REFRIGERANT TUBING
Connect vapor tube to fitting on outdoor unit vapor service valves.
Connect liquid tube to filter drier. (See Fig. 7 and Table 1.) Use
refrigerant grade tubing.
5. Repeat this procedure as indicated in Fig. 9. System will
then contain minimal amounts of contaminants and water
vapor.
—4—
LIQUID-LINE
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
FILTER-DRIER
LIQUID
SERVICE
VALVE
LEAK IN
SYSTEM
A
CONNECTOR
TUBE
VACUUM TIGHT
TOO WET
TIGHT
DRY SYSTEM
A95424
0
1
2
3
4
5
6
7
MINUTES
A95509
A95424
Fig. 7—Filter Drier with Sweat Adapter Tube
Fig. 8—Deep Vacuum Graph
and Liquid Tube
EVACUATE
G. FINAL TUBING CHECK
IMPORTANT: Check to be certain factory tubing on both indoor
and outdoor unit has not shifted during shipment. Ensure tubes are
not rubbing against each other or any sheet metal. Pay close
attention to feeder tubes, making sure wire ties on feeder tubes are
secure and tight.
BREAK VACUUM WITH DRY NITROGEN
WAIT
VII. MAKE ELECTRICAL CONNECTIONS
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
WARNING: To avoid personal injury or death, do not
supply power to unit with compressor terminal box cover
removed.
Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit rating plate. Contact local power company for correction of
improper voltage. See unit rating plate for recommended circuit
protection device.
EVACUATE
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACUUM)
NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit rating plate. Do not
install unit in system where voltage may fluctuate above or below
permissible limits.
CHARGE SYSTEM
A95425
Fig. 9—Triple Evacuation Method
NOTE: Use copper wire only between disconnect switch and
unit.
NOTE: Install branch circuit disconnect of adequate size per
NEC to handle unit starting current. Locate disconnect within sight
from and readily accessible from unit, per Section 440-14 of NEC.
C. CONNECT CONTROL WIRING
A. ROUTE GROUND AND POWER WIRES
Remove access panel to gain access to unit wiring. Extend wires
from disconnect through power wiring hole provided and into unit
control box. Size wires per NEC but not smaller than minimum
wire size shown in Product Data Sheet.
Route 24v control wires through control wiring grommet and
connect to leads provided in control box. (See Fig. 11.)
Use No. 18 AWG color-coded, insulated (35°C minimum) wire. If
thermostat is located more than 100 ft from unit, as measured
along the control voltage wires, use No. 16 AWG color-coded wire
to avoid excessive voltage drop.
WARNING: The unit cabinet must have as uninter-
rupted or unbroken ground to minimize personal injury if
an electrical fault should occur. The ground may consist
of electrical wire or metal conduit when installed in
accordance with existing electrical codes. Failure to
follow this warning can result in an electric shock, fire, or
death.
All wiring must be NEC Class 1 and must be separated from
incoming power leads.
The outdoor unit requires a minimum of 27va, 24vac control
power.
IMPORTANT: Check factory wiring and wire connections to
ensure terminations are secured properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.
B. CONNECT GROUND AND POWER WIRES
Connect ground wire to ground connection in control box for
safety. Connect power wiring to leads provided as shown in Fig.
10.
—5—
TABLE 2—ACCESSORY USAGE
REQUIRED FOR
LONG-LINE
REQUIRED FOR
SEACOAST
APPLICATIONS
(WITHIN 2 MILES)
ACCESSORY
APPLICATIONS*
(50-175 FT)
Coastal Filter
Support Feet
No
No
Yes
Recommended
Yes†
Puron® Balance-Port Hard Shutoff TXV
Yes†
* For tubing line sets between 50 and 175 ft horizontal or 20 ft vertical differential refer to Service Manual for Air Conditioners and Heat Pumps Using Puron® Refrigerant.
Crankcase heater and start assist are standard on two-speed units.
† All two-speed units require hard shut-off TXV.
de-energized, the system operates on high-speed compressor and
DISCONNECT
PER N. E. C. AND/ OR
LOCAL CODES
high-speed airflow until humidistat closes. Fig. 11 shows the
wiring with a Bryant Thermidistat which controls temperature and
humidity level without the need for an additional humidistat and
relay.
CONTACTOR
FIELD POWER
WIRING
LCC OPERATION FOR TYPICAL PSC FURNACES
The standard blower operation of systems with typical PSC
furnaces is covered in Fig. 11. The blower runs in high or low
speed in conjunction with compressor high- or low-speed opera-
tion. When the LCC is wired according to Fig. 11, humidity rises,
the humidistat contacts open and de-energize the relay. If relay is
de-energized, the system operates on high-speed compressor and
low-speed airflow until humidistat closes. Fig. 11 shows the wiring
with a Bryant Thermidistat which controls temperature and hu-
midity level without the need for an additional humidistat and
relay.
FIELD GROUND
WIRING
GROUND
LUG
A91306
Fig. 10—Line Power Connections
VIII. INSTALL ELECTRICAL ACCESSORIES
A. GENERAL
IX. MAKE AIRFLOW SELECTIONS
Refer to the individual instructions packaged with kits or acces-
sories when installing.
A. AIRFLOW SELECTION FOR 315AAV/355MAV FUR-
NACES
Available electrical accessories include latent capacity control. See
Fig. 11 for typical accessory wiring diagrams.
The 315AAV/355MAV Non-Condensing Variable Speed Fur-
naces provide high- and low-speed blower operation to match the
capacities of the compressor at high and low speeds. To select the
recommended airflow and for adjustments to the manual switches
labeled SW1, A/C and CF on the control board refer to the furnace
Installation, Start-Up, and Operating Instructions. The 315AAV
utilizes a control center that allows the installing technician to
select the proper airflows. The A/C switch determines the airflow
during high speed compressor operation. Airflow for hight and low
speed can be calculated at either 350 CFM per ton or 400 CFM per
ton based on the positions of SW1-5.
B. LATENT CAPACITY CONTROL (LCC)
The purpose of an LCC is to provide a dehumidification mode to
assure a 75 percent or less system sensible heat ratio. If indoor unit
installed contains an ECM blower (such as an FK4C or FV4A fan
coil or a 315(A,J)AV or 355MAV gas furnace), no LCC is
required. Indoor products with ECM blowers have enough CFM
range to provide proper airflow for low-speed cooling. If indoor
unit installed has a standard PSC blower motor, the low-speed
airflow available is too great to assure 75 percent or less system
sensible heat ratio. The LCC for standard blower products consists
of a standard humidistat which opens contacts on humidity rise and
a pilot duty relay with 24v coil.
B. AIRFLOW SELECTION FOR FK4C OR FV4A FAN
COILS
The FK4C and FV4A provides high- and low-speed blower
operation to match the capacities of compressor at high and low
speeds. To select recommended airflow, refer to the FK4C or
FV4A Installation Instructions. The FK4C and FV4A utilize an
EASY SELECT control board that allows the installing technician
to select proper airflows. For adjustments to control board and
recommended A/C SIZE and CFM ADJUST selections, refer to
the fan coil Installation Instructions. This fan coil has an adjustable
blower off delay factory set at 90 sec. for high- and low-speed
blower operation.
NOTE: If an LCC is desired, low-speed airflow must be main-
tained so that a minimum of 300 CFM/ton can be supplied during
high-speed LCC operation.
LCC OPERATION FOR TYPICAL PSC FAN COILS
The standard blower operation for systems with typical PSC fan
coils is covered in Fig. 11. The blower runs in high speed
regardless if compressor operation is high or low speed. When the
LCC is wired according to Fig. 11 and humidity rises, the
humidistat contacts open and de-energize the relay. If relay is
—6—
VARIABLE-SPEED
CONDENSING
FURNACE
THERMIDISTAT
CONTROL
MODEL RH
TWO-STAGE
FURNACE
THERMIDISTAT
CONTROL
MODEL RH
TWO-SPEED
AIR CONDITIONER
WITH PSC
TWO-SPEED
AIR CONDITIONER
BLOWER MOTOR
O/W2
HEAT STAGE 2
COOL STAGE 1
W2
O/W2
Y1/W2
HEAT STAGE 2
COOL STAGE 1
W2
Y1
Y2
R
Y1/W2
Y1
Y2
W/W1
Y/Y2
HEAT STAGE 1
COOL STAGE 2
W/W1
Y/Y2
HEAT STAGE 1 W/W1
W/W1
Y/Y2
Y/Y2
G
COOL STAGE 2
FAN
G
R
FAN
G
R
G
R
24 VAC HOT
R
C
24 VAC HOT
R
DEHUM
DE JUMPER
C
DHUM
C
DEHUMIDIFY
C
24 VAC COMM
C
HUM
24 VAC COMM
HUMIDIFY
N/A
C
DHUM
HUM
N/A
HUM
HUMIDIFIER
(24 VAC)
HUMIDIFIER
(24 VAC)
HUMIDIFY
N/A
B
B
OUTDOOR
SENSOR
S1
S2
OUTDOOR
SENSOR
OUTDOOR
SENSOR
CONNECTION
S1
S2
OUTDOOR
SENSOR
CONNECTION
See notes 1, 2, 3, 6, 8, 10, and 12
A01495
See notes 1, 2, 3, 6, 8, and 10
A01498
NON-PROGRAMMABLE
THERMOSTAT
VARIABLE SPEED
80% NON-CONDENSING FURNACE
FK4C, FV4A
OR 40FK
TWO-SPEED
MODEL 2S
AIR CONDITIONER
FAN COIL
O
AFS
BOARD
THERMIDISTAT
Y1
CONTROL
MODEL RH
DH
J1 JUMPER
24 VAC HOT
24 VAC COMM
FAN
TWO-SPEED
R
C
R
C
R
C
FURNACE
AIR CONDITIONER
COOL STAGE 1 Y1/W2
BOARD
O/W2
W2
HEAT STAGE 2
Y1
Y2
G
G
HEAT STAGE 1
COOL STAGE 2
FAN
W/W1
Y/Y2
W/W1
Y/Y2
COOL STAGE 2
HEAT STAGE 1
Y/Y2
W/W1
Y/Y2
W1
Y2
G
R
G
R
R
C
24 VAC HOT
REMOVE
J2 JUMPER
FOR HEAT
STAGING
COM
HUM
HEAT STAGE 2
COOL STAGE 1
O/W2
Y1
24 VAC COM
DEHUMIDIFY
C
W2
Y1
Y1
DHUM
DEHUM
PL9-10
O
N/A
B
HUMIDIFY
N/A
HUMIDIFIER
(24 VAC)
HUM
OUTDOOR
SENSOR
S1
B
OUTDOOR
SENSOR
CONNECTION
S2
S1
S2
OUTDOOR
SENSOR
CONNECTIONS
See notes 1, 2, 3, 4, and 7
A01496
See notes 1, 2, 3, 6, 8, 10, and 11
A01499
THERMIDISTAT
CONTROL
MODEL RH
TWO-SPEED
AIR CONDITIONER
SINGLE-STAGE
FURNACE
NON-PROGRAMMABLE
THERMOSTAT
SINGLE-STAGE
FURNACE
TWO-SPEED
AIR CONDITIONER
MODEL 2S
N/A
O/W2
24 VAC HOT
R
Y1
Y2
R
C
Y1/ W2
R
C
COOL STAGE 1
24 VAC COMM
C
W/W1
Y/Y2
HEAT STAGE 1
COOL STAGE 2
W
Y
HEAT STAGE 1 W/W1
W
Y
FAN
G
R
G
R
COOL STAGE 2
Y/Y2
Y2
R
C
24 VAC HOT
FAN
G
G
C
24 VAC COMM
C
N/A
COOL STAGE 1
N/A
O/W2
Y1
DHUM
HUM
N/A
Y1
HUMIDIFIER
(24 VAC)
HUMIDIFY
N/A
B
B
OUTDOOR
SENSOR
S1
S2
OUTDOOR
SENSOR
S1
S2
OUTDOOR
SENSOR
CONNECTION
CONNECTION
See notes 1, 2, 3, 6, and 8
A01497
See notes 1, 2, 3, and 5
A01500
Fig. 11—Typical 24V Wiring Diagram
—7—
VARIABLE SPEED
PROGRAMMABLE
THERMOSTAT
MODEL 2S
SINGLE-STAGE
FURNACE
TWO-SPEED
80% NON-CONDENSING FURNACE
AIR CONDITIONER
O
AFS
BOARD
NON-PROGRAMMABLE
THERMOSTAT
Y1
COOL STAGE 1
FAN
Y1/W2
G
Y1
MODEL 2S
G
W
Y
TWO-SPEED
AIR CONDITIONER
FURNACE
BOARD
COOL STAGE 1 Y1/W2
HEAT STAGE 1 W/W1
COOL STAGE 2 Y/Y2
O/W2
W2
HEAT STAGE 2
Y1
Y2
Y2
R
HEAT STAGE 1
COOL STAGE 2
FAN
W/W1
Y/Y2
W/W1
Y/Y2
N/A
O/W2
R
R
C
24 VAC HOT
G
R
G
R
R
C
24 VAC HOT
24 VAC COMM
N/A
C
B
C
COM
HUM
24 VAC COM
C
OUTDOOR
SENSOR
S1
DEHUM
PL9-10
S2
CONNECTION
N/A
B
See notes 1, 2, 3, and 5
A01501
S1
S2
OUTDOOR
SENSOR
CONNECTIONS
TWO-STAGE
FURNACE WITH
PSC BLOWER
MOTOR
NON-PROGRAMMABLE
THERMOSTAT
TWO-SPEED
MODEL 2S
AIR CONDITIONER
See note 1, 2, 3, 4, and 10
A01504
24 VAC HOT
R
C
R
C
R
C
VARIABLE SPEED
80% NON-CONDENSING FURNACE
24 VAC COMM
O
AFS
BOARD
PROGRAMMABLE
THERMOSTAT
MODEL 2S
HEAT STAGE 1 W/W1
W/W1
Y1
COOL STAGE 2
FAN
Y/Y2
G
Y2
Y/Y2
G
TWO-SPEED
AIR CONDITIONER
FURNACE
BOARD
COOL STAGE 1 Y1/W2
O/W2
W2
HEAT STAGE 2
Y1
Y2
HEAT STAGE 1
COOL STAGE 2
FAN
W/W1
Y/Y2
W/W1
Y/Y2
HEAT STAGE 2
COOL STAGE 1
N/A
W2
O/W2
Y1
Y1
G
R
G
R
R
C
HUM
B
24 VAC HOT
S1
S2
OUTDOOR
SENSOR
COM
HUM
24 VAC COM
C
CONNECTION
DEHUM
PL9-10
See notes 1, 2, 3, 4, and 10
A01502
TWO-STAGE
N/A
B
NON-PROGRAMMABLE
THERMOSTAT
TWO-SPEED
FURNACE WITH
PSC BLOWER
MOTOR
AIR CONDITIONER
MODEL 2S
S1
S2
OUTDOOR
SENSOR
CONNECTIONS
COOL STAGE 1
FAN
Y1/W2
G
Y1
See notes 1, 2, 3, 5, and 10
A01505
G
W/W1
VARIABLE-SPEED
NON-PROGRAMMABLE
THERMOSTAT
HEAT STAGE 1 W/W1
COOL STAGE 2 Y/Y2
HEAT STAGE 2 O/W2
CONDENSING
FURNACE
TWO-SPEED
MODEL 2S
AIR CONDITIONER
Y2
R
Y/Y2
W2
R
O/W2
Y1
HEAT STAGE 2
COOL STAGE 1
W2
Y1
Y2
R
R
24 VAC HOT
W/W1
Y/Y2
HEAT STAGE 1
COOL STAGE 2
W/W1
Y/Y2
G
R
24 VAC COMM
N/A
C
B
C
C
FAN
G
R
24 VAC HOT
HUM
DEHUM
DE JUMPER
OUTDOOR
SENSOR
S1
C
C
S2
HUM
CONNECTION
24 VAC COMM
N/A
C
See notes 1, 2, 3, 5, and 10
A01503
B
S1
S2
OUTDOOR
SENSOR
CONNECTION
See notes 1, 2, 3, and 4
A01506
Fig. 11—Typical 24V Wiring Diagram (Cont)
—8—
THERMIDISTAT
CONTROL
MODEL RH
PROGRAMMABLE
THERMOSTAT
MODEL 2S
FK4C, FV4A
OR 40FK
FAN COIL
TWO-SPEED
AIR CONDITIONER
FK4C, FV4A
OR 40FK
FAN COIL
TWO-SPEED
AIR CONDITIONER
HEAT STAGE 2 O/W2
HEAT STAGE 1 W/W1
W2
W1
DH
R
REMOVE J2 JUMPER
FOR HEAT STAGING
J1
JUMPER
24 VAC HOT
FAN
R
R
Y1/W2
Y/Y2
COOL STAGE 1
COOL STAGE 2
Y1
Y2
Y1
Y/Y2
G
G
G
Y1
Y/Y2
COOL STAGE 1
COOL STAGE 2
HEAT STAGE 1
HEAT STAGE 2
Y1
Y2
Y1/W2
Y/Y2
G
R
FAN
R
R
O
REMOVE
24 VAC HOT
W1
W2
W/W1
O/W2
J2 JUMPER
FOR HEAT
STAGING
REMOVE
J1 JUMPER
DH
C
DHUM
DEHUMIDIFY
C
C
24 VAC COMM
HUMIDIFY
N/A
24 VAC COMM
N/A
C
O
C
C
B
HUM
HUMIDIFIER
(24 VAC)
B
OUTDOOR
SENSOR
S1
OUTDOOR
SENSOR
S1
S2
OUTDOOR
SENSOR
CONNECTION
CONNECTION
S2
See notes 1, 2, 3, 5, and 7
A01493
See notes 1, 2, 3, 6, 7, 8, and 9
A01494
VARIABLE-SPEED
CONDENSING
FURNACE
PROGRAMMABLE
THERMOSTAT
MODEL 2S
TWO-SPEED
AIR CONDITIONER
O/W2
HEAT STAGE 2
COOL STAGE 1
W2
Y1
Y2
R
Y1/W2
W/W1
Y/Y2
HEAT STAGE 1
COOL STAGE 2
W/W1
Y/Y2
G
R
FAN
G
R
24 VAC HOT
DEHUM
DE JUMPER
C
C
HUM
24 VAC COMM
N/A
C
B
S1
S2
OUTDOOR
SENSOR
CONNECTION
See notes 1, 2, 3, and 5
A01507
Fig. 11—Typical 24V Wiring Diagram (Cont)
—9—
LEGEND
24-V FACTORY WIRING
24-V FIELD WIRING
FIELD SPLICE CONNECTION
RELAY SPDT, PILOT DUTY
24-V COIL (HN61KK324)
OR EQUIVALENT
R1
H
HUMIDISTAT, OPENS ON
HUMIDITY RISE (HL38MG026)
AIRFLOW SELECTOR
AFS
A97466
WIRING DIAGRAM NOTES:
1. WIRING MUST CONFORM TO NEC OR LOCAL CODES.
2. UNDERLINED LETTER ON THERMOSTAT TERMINAL INDICATES USAGE. FOR EXAMPLE: O/W2 MEANS O IS ENERGIZED
IN COOLING MODE.
3. REFER TO INDOOR UNIT INSTALLATION INSTRUCTIONS FOR ANY ADDITIONAL FEATURES AND WIRING INFORMA-
TION.
4. NON-PROGRAMMABLE MODEL 2S01–B, WHEN USED IN AIR CONDITIONING INSTALLATION THE R19 JUMPER MUST BE
CUT AND REMOVED.
5. PROGRAMMABLE MODEL 2S01–B MUST HAVE DIP SWITCH C ON WHEN USED IN AIR CONDITIONER APPLICATIONS.
6. THERMIDISTAT DIP SWITCH NO. 1 SHOULD BE SET IN OFF POSITION FOR AIR CONDITIONER APPLICATIONS (FACTORY
DEFAULT).
7. AS AN OPTION O/W2CAN CONTROL SECOND-STAGE HEAT.
8. THERMIDISTAT DIP SWITCH NO. 2 SHOULD BE SET IN THE ON POSITION FOR DUAL CAPACITY COMPRESSOR
OPERATION.
9. TO ACTIVATE DEHUMIDIFY FUNCTION ON FK4 OR FV4, REMOVE J1 JUMPER AT FAN COIL CONTROL BOARD.
10. AS AN OPTION, LOCK FURNACE INTO LOW-FIRE OPERATION AND LET O/W2 CONTROL HIGH FIRE OPERATION. REFER
TO FURNACE INSTALLATION INSTRUCTIONS FOR PROPER SETUP.
11. TO ACTIVATE DEHUMIDIFY FEATURE ON CURRENT STYLE, VARIABLE-SPEED, 80 PERCENT NON-CONDENSING,
FURNACE DISCONNECT GREEN (DEHUM) WIRE FROM G ON FURNACE CONTROL BOARD AND CONNECT TO
DEHUMIDIFY TERMINAL DHUM ON THERMIDISTAT.
12. THE DE JUMPERS MUST BE REMOVED TO ENABLE THE DEHUMIDIFICATION FEATURE ON FURNACE.
—10—
X. START-UP
CAUTION: To prevent compressor damage or personal
2. Measure liquid service valve pressure by attaching an
accurate gage to service port.
3. Measure liquid line temperature by attaching an accurate
thermistor type or electronic thermometer to liquid line near
outdoor coil.
4. Refer to Table 4 for required subcooling temperature.
5. Refer to Table 3. Find the point where required subcooling
temperature intersects measured liquid service valve pres-
sure.
injury, observe the following:
• Do not overcharge system with refrigerant.
• Do not operate unit in a vacuum or at negative pressure.
• Do not disable low-pressure switch.
6. To obtain required subcooling temperature at a specific
liquid line pressure, add refrigerant if liquid line tempera-
ture is higher than indicated or reclaim refrigerant if
temperature is lower. Allow a tolerance of ± 3°F.
CAUTION: To prevent personal injury wear safety
glasses, protective clothing, and gloves when handling
refrigerant and observe the following:
• Back seating service valves are not equipped with
Schrader valves. Fully back seat (counter clockwise)
valve stem before removing gage port cap.
TABLE 3—REQUIRED LIQUID-LINE TEMPERATURE (°F)
REQUIRED SUBCOOLING
TEMPERATURE
(°F)
LIQUID
PRESSURE AT
SERVICE VALVE
(PSIG)
8
10
56
12
54
14
52
16
50
18
48
CAUTION: Do not vent refrigerant to atmosphere. Re-
cover during system repair or final unit disposal.
189
195
202
208
215
222
229
236
243
251
259
266
274
283
291
299
308
317
326
335
345
354
364
374
384
395
406
416
427
439
450
462
474
486
499
511
58
60
58
56
54
52
50
62
60
58
56
54
52
Follow these steps to properly start up the system:
64
62
60
58
56
54
66
64
62
60
58
56
1. The outdoor unit is equipped with a crankcase heater which
operates when the compressor is off. Energize crankcase
heater 24 hr. before starting unit. To energize heater only,
set indoor thermostat to OFF position and close power
disconnect to unit.
68
66
64
62
60
58
70
68
66
64
62
60
72
70
68
66
64
62
74
72
70
68
66
64
NOTE: Starting the compressor without a minimum of 12 hours
of crankcase heat prior to initial start-up may result in compressor
chattering noise and possible damage to the compressor.
76
74
72
70
68
66
78
76
74
72
70
68
80
78
76
74
72
70
2. Fully back seat (open) liquid and vapor tube service valves.
82
80
78
76
74
72
3. Unit is shipped with valve stem(s) front seated and caps
installed. Replace stem caps after system is opened to
refrigerant flow (back seated). Replace caps finger tight and
tighten additional 1/12 turn (20 ft-lb torque) with wrench.
84
82
80
78
76
74
86
84
82
80
78
76
88
86
84
82
80
78
90
88
86
84
82
80
4. Close electrical disconnects to energize system.
92
90
88
86
84
82
5. Set room thermostat at desired temperature. Be sure set
point is below indoor ambient and is set low enough to
energize desired speed.
94
92
90
88
86
84
96
94
92
90
88
86
98
96
94
92
90
88
NOTE: Bryant electronic thermostats are equipped with a 15
minute staging timer. This timer prevents the two-speed system
from operating at high speed until unit has been operating in low
speed for 15 minutes unless there is at least a 5°F difference
between room temperature and thermostat set point. To force high
speed (after a minimum of 2 minutes in low speed), adjust the set
point at least 5° below room ambient.
100
102
104
106
108
110
112
114
116
118
120
122
124
126
128
98
96
94
92
90
100
102
104
106
108
110
112
114
116
118
120
122
124
126
98
96
94
92
100
102
104
106
108
110
112
114
116
118
120
122
124
98
96
94
100
102
104
106
108
110
112
114
116
118
120
122
98
96
100
102
104
106
108
110
112
114
116
118
120
98
100
102
104
106
108
110
112
114
116
118
6. Set room thermostat to COOL and fan control to AUTO or
ON as desired. Wait for appropriate time delay(s) and 2
minute minimum low-speed run time. Operate unit for 15
minutes. Check refrigerant charge.
NOTE: If unit has not operated within the past 12 hours or
following a unit power-up, upon the next thermostat high- or
low-speed demand, unit operates for a minimum of 5 minutes in
high speed.
XI. CHECK CHARGE
B. UNIT CHARGE
WARNING: Service valve gage ports are not equipped
with Schrader valves. To prevent personal injury, make
sure gage manifold is connected to the valve gage ports
before moving valves off fully back seated position. Wear
safety glasses and gloves when handling refrigerant.
Factory charge and charging method are shown on pink charging
label. Puron® refrigerant cylinders contain a dip tube which
allows liquid refrigerant to flow from cylinder in upright
position. Charge Puron units with cylinder in upright position and
a commercial type metering device in manifold hose. Charge
refrigerant into suction line.
NOTE: Unit is to be charged in high capacity only. Charging in
low capacity may cause compressor chattering and possible
damage to the compressor.
A. COOLING ONLY PROCEDURE
1. Operate unit a minimum of 15 minutes before checking
charge.
—11—
TABLE 4—SUBCOOLING TEMPERATURES
TABLE 5—CONTROL FUNCTION LED CODE
TXV TYPE EXPANSION DEVICE
SIGNAL
IMPORTANCE*
CODE
DEFINITION
UNIT
HIGH CAPACITY ONLY
SUBCOOLING AT SERVICE VALVE
Constant flash
No pause
No demand
Stand by
10
024
036
048
060
14°F
15°F
12°F
16°F
1 flash
w/pause
Low-speed operation
High-speed operation
9
8
7
6
2 flashes
w/pause
3 flashes
w/pause
Outdoor thermistor failure
Outdoor coil thermistor failure
NOTE: If subcooling charging conditions are not favorable,
charge must be weighed in accordance with unit rating plate ± 0.6
oz/ft of 3/8-in. liquid line above or below 15 ft respectively.
EXAMPLE: To calculate additional charge required for a 25 ft line
set: 25 ft - 15 ft = 10 ft x 0.6 oz/ft = 6 oz of additional charge.
4 flashes
w/pause
3 flashes
pause
4 flashes
Thermistor out of range
Low pressure switch trip
5
4
XII. SYSTEM FUNCTIONS AND SEQUENCE OF OPERA-
TION
5 flashes
pause
1 flash
The outdoor unit control system has special functions. The
following is an overview of the two-speed control functions:
5 flashes
pause
2 flashes
High pressure switch trip
Compressor VC/VH trip
Board failure
3
2
1
A. COOLING OPERATION
6 flashes
w/pause
This product utilizes a 2-stage cooling indoor thermostat. With a
call for first stage cooling (Yl), the outdoor fan and low capacity
compressor are energized. If low capacity cannot satisfy cooling
demand, high capacity is energized (Yl and Y2 or Y2 only) by the
second stage of indoor thermostat. After second stage is satisfied,
the unit returns to low-speed operation until first stage is satisfied
or until second stage is required again. When both one stage and
two stage cooling are satisfied, the compressor will shut off.
Constant light
No pause
No flash
*Function light signal order of importance in case of multiple signal request; 1
is most important.
TABLE 6—DUAL CAPACITY COMPRESSOR
(WINDING RESISTANCE AT 70° ± 20°)
NOTE: If unit has not operated within the past 12 hours or
following a unit power-up, upon the next thermostat high- or
low-speed demand, unit operates for a minimum of 5 minutes in
high speed.
WINDING
Start (S-C)
Run (R-C)
024
036
048
060
2.280
0.770
1.850
0.745
1.457
0.552
0.740
0.356
NOTE: When two-speed unit is operating at low speed, system
vapor (suction) pressure will be higher than a standard single-
speed system or high-speed operation. This normal operation is
due to the reduced capacity operating with typically larger indoor
and outdoor coils.
F. CRANKCASE HEATER OPERATION
The two-speed control energizes crankcase heater during unit off
cycle.
NOTE: Outdoor fan motor will continue to operate for one
minute after compressor shuts off, when outdoor ambient is greater
than or equal to 100°F.
G. OUTDOOR FAN MOTOR OPERATION
The outdoor unit control energizes outdoor fan any time compres-
sor is operating. The outdoor fan remains energized during the 1
minute speed change time delay and if a pressure switch or
compressor overload should trip. Outdoor fan motor will continue
to operate for one minute after the compressor shuts off when the
outdoor ambient is greater than or equal to 100°F.
B. STATUS FUNCTION LIGHTS
A system control STATUS function light is located on the outdoor
unit control board (see Fig. 12). The STATUS light provides
signals for several system operations. See Table 5 for codes and
definitions. Table 5 also provides the order of signal importance.
H. COMPRESSOR VOLTAGE FAILURE (6 FLASHES)
NOTE: Only one code will be displayed on the outdoor unit
The control senses the voltage of the compressor run winding. If
compressor voltage (Vc) is less than 90v when control board is
calling for compressor operation, control shuts compressor off for
15 minutes with outdoor fan running. After 15 minutes (provided
there is a call for Y1 or Y2), control attempts to start compressor.
During this time, a code of 6 flashes appears at control board. If Vc
trip occurs 3 consecutive times during a Y1 request, then low
capacity operation is locked out and control responds to Y2
requests until a reset occurs. If 3 consecutive trips occur in a
combination of Yl and Y2 or all Y2 requests, then both low and
high capacity operation will be locked out. The compressor voltage
failure (6 flashes) can be caused by:
control board (the most recent with the highest priority).
C. FACTORY DEFAULTS
Factory defaults have been provided in the event of failure of
outdoor air thermistor, coil thermistor, and/or furnace interface
jumper.
D. ONE MINUTE SPEED CHANGE TIME DELAY
When compressor changes speeds from high to low or low to high,
there is a 1 minute time delay before compressor restarts. The
outdoor fan motor remains running.
E. COMPRESSOR OPERATION
•
compressor internal overload trip (refer to Table 6 for correct
winding resistance).
When the compressor operates in high capacity operation, the
motor rotates clockwise. Both the lower and upper pistons are
eccentric with the rotating crankshaft and both compress refriger-
ant. When the compressor operates in low capacity the motor
reverses direction (rotates counterclockwise). The lower piston
becomes idle and the upper piston compresses refrigerant. The
start and run windings are reversed.
•
•
•
•
no 240 volt power supply to outdoor unit.
failed compressor contactor(s).
failure of start relay to pick up properly.
improper wiring.
—12—
I. PRESSURE SWITCH PROTECTION
THERMISTOR CURVE
The outdoor unit is equipped with high- and low-pressure
switches. If the control senses the opening of a high or low
pressure switch, it will respond as follows:
90
80
1. De-energize the compressor low or high speed contactor,
2. Keep the outdoor fan operating for 15 minutes,
3. Display the appropriate error code on the status light (see
Table 5).
4. After a 15 minute delay, if Yl or Y2 inputs are on and the
LPS or HPS is reset, energize appropriate compressor
contactor, either low or high.
5. If LPS or HPS has not closed after a 15 minute delay, the
outdoor fan is turned off. If the open switch closes anytime
after the 15 minute delay, then resume operation on call for
Y1 and/or Y2.
70
60
50
40
30
20
10
0
0
20
40
60
80
100
120
TEMPERATURE (DEG. F)
A91431
J. MAJOR COMPONENTS
Fig. 13—Resistance Values Versus Temperature
TWO-SPEED CONTROL
COMPRESSOR CONTROL CONTACTORS
The two-speed control board controls the following functions:
- Low- and high-compressor contactor operation
- Outdoor fan motor operation
Low and high capacity contactor coils are 24 volts. The electronic
control board controls the operation of the low speed (C-L) and the
high speed (C-H) contactors.
- Crankcase heater operation
- Compressor protection
- Pressure switch monitoring
- Time delays
K. TEMPERATURE THERMISTORS
Thermistors are electronic devices which sense temperature. As
the temperature increases, the resistance decreases. Thermistors
are used to sense outdoor ambient and coil temperature. Refer to
Fig. 13 for resistance values versus temperature.
FIELD CONNECTIONS
The two-speed control received 24vac low-voltage control system
inputs through the screw connections on the left side of the control
board.
If the outdoor ambient or coil thermistor should fail, a fault code
appears at two-speed control.
TWO-SPEED COMPRESSOR
IMPORTANT: Outdoor Air Thermistor Placement Mount out-
door air thermistor underneath unit base pan lip on control box side
of the unit. Attach to base pan with adhesive tape.
The two-speed compressor contains motor windings that provide
2-pole (3500 RPM) operation.
COMPRESSOR INTERNAL RELIEF
IMPORTANT: If outdoor air thermistor is not properly placed
underneath base pan, unit may see nuisance thermistor out of range
faults.
The compressor is protected by an internal pressure relief (IPR)
which relieves discharge gas into compressor shell when differen-
tial between suction and discharge pressures exceeds 525 psi. The
compressor is also protected by an internal overload attached to
motor windings.
CEBD430439-03A
SS0ID
R38
C2
R33
R9
J1
Low Pressure
1
PL1
PL2
Switch Connector
High Pressure
Switch Connector
Thermistor
PL3
PL4
C31
R61
1
1
R65
PL5
Connection
PWM2
PWM1
DEFROST
TIME (MIN)
R39
S1
120
R44
R42
Defrost Time
Selectors
30
60
C18
C16
BRN
1
2
60
30
R36
90
To Run
BLU
0
Y2
Y1
W1
C
Capacitor
BLK
YEL
RED
Thermostat
Low Voltage
Connector
C O M M S TAT U S
D52
CEPL130439-01
K1
O.D.F. Connection
Crankcase Heater
Connection
D51
R
R89
R85
R91
R86
R87
HK38EA001
A
B
C
D
Reserved for
Future Use
A01192
Fig. 12—Control Board
—13—
1. Ensure that all wiring and tubing is secure in unit before
adding panels and covers. Securely fasten all panels and
covers.
2. Tighten service valve stem caps to 1/12 turn past finger
tight.
Control Box
Side of Unit
3. Leave Owner’s Manual with owner. Explain system opera-
tion and periodic maintenance requirements outlined in
manual.
THERMISTOR PLACED
UNDERNEATH BASE PAN
(ATTACHED TO BASE PAN
WITH ADHESIVE)
4. Fill out Dealer Installation Checklist and place in customer
file.
CARE AND MAINTENANCE
A02218
For continuing high performance and to minimize possible equip-
ment failure, periodic maintenance must be performed on this
equipment. Frequency of maintenance may vary depending upon
geographic areas, such as coastal applications.
Fig. 14—View from Top of Base Pan
XIII. FINAL CHECKS
IMPORTANT: Before leaving job, be sure to do the following:
—14—
DUAL CAPACITY
CONNECTION DIAGRAM L1
BLK
BLK
RED
L2
YEL
208 / 230 - 1 - 60
BLK
POWER SUPPLY
CH
11
C L
11
23
23
EQUIP GND
21
21
YEL
BLU
NOTE #11
COMP
BRN
BLK
R
S
C
RED
BLU
BRN
BRN
1
2
3
4
5
1
2
PL1
HP/AC
C
SEV RVS
C
HI LO PL2
BRN
START
CAP
LPS
LPS
1
2
3
YEL/PNK
YEL/PNK
PL3
C
H
COMP
CAP
FORCED
DEFROST
HPS
OAT
OCT
BRN
HPS
PL4
BLU/PNK
BLU/PNK
1
2
YEL
DEFROST
TIME (MIN)
5
1
-t°
-t°
BLU
OAT
PL5
BLK
BLK
BRN
BRN
1
2
2
BLU
START
RELAY
BRN
4
5
OCT
O
COMM STATUS
Y
2
VC
VH
BRN
BLU
OFM
RED
YEL
Y
1
YEL
FAN CAP
W
BLK
1
A
B
C
D
ODF
L 2
BLK
YEL
RED
BRN
BLK
C
R
CCH
CCH
TO INDOOR UNIT
A01513
Fig. 15—Wiring Diagram—024, 036, 048
—15—
DUAL CAPACITY
CONNECTION DIAGRAM L1
BLK
L2
YEL
208 / 230 - 1 - 60
POWER SUPPLY
BLK
BLK
CH
CL
13
11
21
11
21
RED
EQUIP GND
23
YEL
BLU
NOTE #11
COMP
BRN
BLK
R
S
C
RED
1
BLU
2
BRN
BRN
1
2
3
4
5
PL1
HP/AC
C
SEV RVS
C
HI LO PL2
BRN
LPS
START
CAP
LPS
PL3
1
2
3
YEL/PNK
YEL/PNK
C
H
COMP
CAP
FORCED
DEFROST
HPS
OAT
OCT
BRN
BLU/PNK
BLU/PNK
HPS
PL4
1
2
YEL
5
1
DEFROST
TIME(MIN)
-t∞
-t∞
BLU
BLK
BLK
BRN
BRN
OA T
PL5
1
2
2
BLU
START
RELAY
BRN
4
5
COMM STATUS
OC T
O
Y
2
1
VC
OFM
RED
Y
BRN
BLU
BLK
YEL
YEL
FA N CAP
VH
ODF
L 2
W
BLK
1
A
B
C
D
BLK
BRN
C
R
YEL
CCH
RED
CCH
TO INDOORUNIT
A02212
Fig. 16—Wiring Diagram—060
© 2003 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231
Printed in U.S.A.
ii598b244
Catalog No. 5359-810
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