Carrier Saw 38TDB User Manual

38TDB  
WeatherMaker™ Two-Speed  
Air Conditioning Unit with Puron®  
Installation and Start-Up Instructions  
NOTE: Read the entire instruction manual before starting the  
installation.  
This symbol indicates a change since the last issue.  
SAFETY CONSIDERATIONS  
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.  
A98516  
Fig. 1—Model 38TDB  
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.  
3. Run refrigerant tubes as directly as possible by avoiding  
unnecessary turns and bends.  
Understand these signal words; DANGER, WARNING, CAU-  
TION, and NOTE. 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. When passing refrigerant tubes through the wall, seal opening  
with RTV or other pliable silicon-based caulk. (See Fig. 2.)  
5. Avoid direct tubing contact with water pipes, duct work, floor  
joists, wall studs, floors, and walls.  
6. 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.)  
7. Ensure that tubing insulation is pliable and completely sur-  
rounds vapor tube.  
8. When necessary, use hanger straps which are 1 in. wide and  
conform to shape of tubing insulation. (See Fig. 2.)  
Before installing, modifying, or servicing system, main elec-  
trical 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.  
9. Isolate hanger straps from insulation by using metal sleeves  
bent to conform to shape of insulation.  
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.  
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.  
IMPORTANT: Maximum liquid-line size is 3/8 in. O.D. for all  
residential applications.  
IMPORTANT: Only install the factory-supplied Puron® (R-  
410A) air conditioner liquid line filter drier. Obtain replacement  
filter driers from your local distributor.  
INSTALLATION RECOMMENDATIONS  
NOTE: In some cases noise in the living area has been traced to  
gas pulsations from improper installation of equipment.  
INSTALLATION  
Step 1—Check Equipment and Job Site  
1. Locate unit away from windows, patios, decks, etc. where unit  
operation sound may disturb customer.  
UNPACK UNIT  
2. Ensure that vapor and liquid tube diameters are appropriate to  
capacity of unit.  
Move to final location. Remove carton, taking care not to damage  
unit.  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Book  
Tab 3a 2a  
1
4
PC 101  
Catalog No. 533-80059  
Printed in U.S.A.  
Form 38TDB-4SI  
Pg 1  
8-02  
Replaces: 38TDB-3SI  
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SENSING BULB  
COIL  
STRAP  
SENSING  
BULB  
EQUALIZER  
TUBE  
8 O'CLOCK  
4 O'CLOCK  
A00399  
Fig. 6—Positioning of Sensing Bulb  
THERMOSTATIC  
EXPANSION  
VALVE  
4. Remove TXV using a backup wrench on flare connections to  
prevent damage to tubing.  
A91277  
5. Using wire cutters, cut equalizer tube off flush with vapor tube  
inside cabinet.  
Fig. 4—TXV Installed  
6. Remove bulb from vapor tube inside cabinet.  
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.  
7. Braze equalizer stub-tube closed. Use protective barrier as  
necessary to prevent damage to drain pan.  
IMPORTANT: Route the equalizer tube of the approved Puron®  
TXV through suction line connection opening in fitting door prior  
to replacing fitting panel around tubing.  
9. Connect equalizer tube of TXV to 1/4-in. equalizer fitting on  
vapor line adapter.  
8. Install TXV (Fig. 5A) with 3/8-in. copper tubing through  
small hole in service panel. Use wrench and backup wrench,  
to avoid damage to tubing valve.  
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.  
9. Reinstall TXV support clamp (removed in item 3).  
11. Proceed with remainder of unit installation.  
10. Attach TXV bulb to vapor tube inside cabinet, in same  
location as original was when removed, using supplied bulb  
straps. (See Fig. 5C.) See Fig. 6 for correct positioning of  
sensing bulb. Insulate bulb with factory-supplied insulation  
tape. (See Fig. 5E.)  
FAN COIL  
To obtain efficiency rating for 38TDB037 with FV4ANB006  
fancoil TXV must be replaced with factory supplied TXV.  
Replacing R-22 TXV or Non-Balance Port Puron TXV  
11. Route equalizer tube through suction connection opening  
(large hole) in fitting panel and install fitting panel in place.  
1. Remove any existing refrigerant and ensure coil has not been  
exposed to atmospheric pressure for more than 15 minutes.  
12. Sweat inlet of TXV, marked “IN” to liquid line. Avoid  
excessive heat which could damage valve.  
2. Remove coil access panel and fitting panel from front of  
cabinet.  
13. Install vapor elbow (see Fig. 5B) with equalizer adapter to  
vapor line of line set and vapor connection to indoor coil.  
Adapter has a 1/4-in. male connector for attaching equalizer  
tube. (See Fig. 5B.)  
3. Remove and save TXV support clamp using the 5/16-in. nut  
driver. Save the clamp.  
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.  
B
15. Proceed with the remainder of unit installation.  
INLET  
LONG-LINE APPLICATIONS  
A
D
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—Air Conditioners and Heat Pumps Using Pu-  
ron® Refrigerant.  
COIL  
E
Step 6—Make Piping Connections  
BULB  
INSULATION  
TAPE  
C
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.  
A01418  
Fig. 5—TXV Kit Contents  
3
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LIQUID-LINE  
FILTER-DRIER  
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.  
LIQUID  
SERVICE  
VALVE  
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. Do not bury  
lines for lengths over 36 in.  
A01215  
To prevent damage to unit or service valves, observe the  
following:  
• Use a brazing shield.  
Fig. 7—Filter Drier with Sweat Adapter Tube and  
Liquid Tube  
1. Braze 5–in. connector tube to liquid line service valve. Wrap  
filter drier with damp cloth.  
• Wrap service valves with wet cloth or use a heat sink  
material.  
2. Braze filter drier between connector tube and liquid tube to  
indoor coil. Flow arrow must point toward indoor coil.  
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 will occur.  
Follow the recommendations in the Application Guideline and  
Service Manual—Air Conditioners and Heat Pumps Using Pu-  
ron® Refrigerant to minimize losses.  
REFRIGERANT TUBING  
Connect vapor tube to fitting on outdoor unit vapor service valves.  
Connect liquid tube to filter drier. (See Fig. 7and Table 1.)  
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.  
Refer to Table 1 for field tubing diameters. Refer to Table 2 for  
accessory requirements.  
Do not bury lines over 36 in. long.  
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.  
LEAK CHECKING  
Leak test all joints in indoor, outdoor, and refrigerant tubing.  
EVACUATE REFRIGERANT TUBING AND INDOOR COIL  
Table 1—Refrigerant Connections and  
Recommended Liquid and Vapor Tube  
Diameters (In.)  
Never use the system compressor as a vacuum pump.  
LIQUID  
Connection  
Diameter Diameter Diameter Diameter Diameter Diameter  
VAPOR  
VAPOR (LONG-LINE)  
UNIT  
SIZE  
Tube  
Connection  
Tube  
Connection Tube  
Refrigerant tubes and indoor coil should be evacuated to 500  
microns. Always break a vacuum with dry nitrogen.  
024  
036  
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  
5/8  
3/4  
7/8  
7/8  
3/4  
7/8  
Deep Vacuum Method  
037, 048  
060  
7/8  
7/8  
The deep vacuum method requires a vacuum pump capable of  
pulling a minimum vacuum of 500 microns and a vacuum gage or  
thermistor 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.)  
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.  
Triple Evacuation Method  
OUTDOOR UNIT CONNECTED TO FACTORY-APPROVED  
INDOOR UNIT  
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:  
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  
1. Pump system down to 28 in. of mercury and allow pump to  
continue operating for an additional 15 minutes.  
2. Close service valves and shut off vacuum pump.  
3. Connect a nitrogen cylinder and regulator to system and open  
until system pressure is 2 psig.  
Installation of filter drier in liquid line is required.  
INSTALL LIQUID-LINE FILTER DRIER  
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.  
Installation of filter drier in liquid line is required. Refer to Fig. 7  
and install filter drier as follows:  
4
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DISCONNECT  
5000  
4500  
4000  
3500  
3000  
2500  
2000  
1500  
1000  
500  
PER N. E. C. AND/ OR  
LOCAL CODES  
CONTACTOR  
LEAK IN  
SYSTEM  
FIELD POWER  
WIRING  
VACUUM TIGHT  
TOO WET  
FIELD GROUND  
WIRING  
GROUND  
LUG  
TIGHT  
DRY SYSTEM  
A91306  
A95424  
0
1
2
3
4
5
6
7
Fig. 10—Line Power Connections  
MINUTES  
A95424  
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.  
Fig. 8—Deep Vacuum Graph  
5. Repeat this procedure as indicated in Fig. 9. System will then  
contain minimal amounts of contaminants and water vapor.  
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 Digest.  
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.  
The unit cabinet must have as uninterrupted 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.  
Step 7—Make Electrical Connections  
To avoid personal injury or death, do not supply power to unit  
with compressor terminal box cover removed.  
CONNECT GROUND AND POWER WIRES  
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.  
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.  
Connect ground wire to ground connection in control box for  
safety. Connect power wiring to leads provided as shown in Fig.  
10.  
CONNECT CONTROL WIRING  
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.  
NOTE: Use copper wire only between disconnect switch and  
unit.  
EVACUATE  
All wiring must be NEC Class 1 and must be separated from  
incoming power leads.  
BREAK VACUUM WITH DRY NITROGEN  
The outdoor unit requires a minimum of 27va, 24vac control  
power.  
WAIT  
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.  
EVACUATE  
BREAK VACUUM WITH DRY NITROGEN  
WAIT  
Step 8—Install Electrical Accessories  
GENERAL  
Refer to the individual instructions packaged with kits or acces-  
sories when installing.  
EVACUATE  
Available electrical accessories include latent capacity control. See  
Fig. 11 for typical accessory wiring diagrams.  
CHECK FOR TIGHT, DRY SYSTEM  
(IF IT HOLDS DEEP VACUUM)  
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, FV4A, or  
40FK fan coil or a 58CVA or 58MVP gas furnace), no LCC is  
CHARGE SYSTEM  
A95425  
Fig. 9—Triple Evacuation Method  
5
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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  
W2  
Y1  
Y2  
R
Y1/W2  
Y1  
Y2  
Y1/W2  
W/W1  
W/W1  
Y/Y2  
HEAT STAGE 1  
COOL STAGE 2  
W/W1  
Y/Y2  
W/W1  
Y/Y2  
G
R
FAN  
G
R
G
R
G
R
24 VAC HOT  
R
C
DEHUM  
DE JUMPER  
C
DHUM  
C
DEHUMIDIFY  
C
HUM  
24 VAC COMM  
HUMIDIFY  
N/A  
C
DHUM  
HUM  
HUM  
HUMIDIFIER  
(24 VAC)  
B
B
OUTDOOR  
SENSOR  
S1  
S2  
OUTDOOR  
SENSOR  
CONNECTION  
S1  
S2  
See notes 1, 2, 3, 6, 8, 10, and 12  
A01495  
NON-PROGRAMMABLE  
THERMOSTAT  
FK4C, FV4A  
OR 40FK  
FAN COIL  
TWO-SPEED  
AIR CONDITIONER  
MODEL 2S  
DH  
J1 JUMPER  
24 VAC HOT  
24 VAC COMM  
FAN  
R
C
R
C
R
C
G
G
COOL STAGE 2  
HEAT STAGE 1  
Y/Y2  
W/W1  
Y/Y2  
W1  
Y2  
REMOVE  
J2 JUMPER  
FOR HEAT  
STAGING  
HEAT STAGE 2  
COOL STAGE 1  
O/W2  
Y1  
W2  
Y1  
Y1  
O
N/A  
B
OUTDOOR  
SENSOR  
S1  
CONNECTION  
S2  
See notes 1, 2, 3, 4, and 7  
A01496  
THERMIDISTAT  
CONTROL  
MODEL RH  
TWO-SPEED  
AIR CONDITIONER  
SINGLE-STAGE  
FURNACE  
N/A  
O/W2  
Y1  
Y2  
Y1/ W2  
COOL STAGE 1  
W/W1  
Y/Y2  
HEAT STAGE 1  
COOL STAGE 2  
W
Y
FAN  
G
R
G
R
R
C
24 VAC HOT  
C
24 VAC COMM  
C
DHUM  
HUM  
N/A  
HUMIDIFIER  
(24 VAC)  
HUMIDIFY  
N/A  
B
OUTDOOR  
SENSOR  
S1  
S2  
OUTDOOR  
SENSOR  
CONNECTION  
See notes 1, 2, 3, 6, and 8  
A01497  
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  
S1  
S2  
MODEL 2S  
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)  
7
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PROGRAMMABLE  
THERMOSTAT  
MODEL 2S  
THERMIDISTAT  
CONTROL  
MODEL RH  
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)  
required. The LCC for standard PSC blower products consists of a  
standard humidistat which opens contacts on humidity rise and a  
pilot duty relay with 24v coil.  
AIRFLOW SELECTION FOR FK4C, FV4A, OR 40FK FAN  
COILS  
The FK4C and FV4A provide 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, FV4A,  
or 40FK Installation Instructions. The FK4C, FV4A, and 40FK  
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.  
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.  
Step 9—Make Airflow Selections  
AIRFLOW SELECTION FOR 58CVA/58MVP FURNACES  
The 58CVA/58MVP Non-Condensing Variable Speed Furnaces  
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.  
For other combinations of equipment consult the Product Data  
Digest.  
8
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LEGEND  
24 VOLT FACTORY WIRING  
24 VOLT 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  
A01222  
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.  
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  
Puron® Balance-Port Hard  
Shut-off TXV  
Yes†  
Yes†  
* For tubing line sets between 50 and 175 ft horizontal or 20 ft vertical differential, refer to Application Guideline and Service Manual—Air Conditioners and Heat Pumps  
Using Puron® Refrigerant. Crankcase heater and start assist are standard on two-speed units.  
† Required for all applications.  
9
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Control Box  
Side of Unit  
THERMISTOR PLACED  
UNDERNEATH BASE PAN  
(ATTACHED TO BASE PAN  
WITH ADHESIVE)  
CEBD430439-03A  
SS0ID  
C2  
R38  
R33  
R9  
J1  
Low Pressure  
Switch Connector  
High Pressure  
Switch Connector  
Thermistor  
A00430  
1
PL1  
PL2  
PL3  
PL4  
C31  
R61  
1
1
Fig. 14—View from Top of Base Pan  
R65  
PL5  
Connection  
PWM2  
PWM1  
DEFROST  
TIME (MIN)  
R39  
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 (counterclockwise) valve stem before  
removing gage port cap.  
S1  
120  
R44  
R42  
Defrost Time  
Selectors  
30  
60  
C18  
C16  
BRN  
1
2
60  
30  
R36  
90  
To Run  
Capacitor  
BLU  
0
Y2  
Y1  
W1  
C
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  
Do not vent refrigerant to atmosphere. Recover during system  
repair or final unit disposal.  
A01192  
Fig. 12—Control Board  
Follow these steps to properly start up the system:  
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.  
THERMISTOR CURVE  
90  
80  
NOTE: Starting the compressor without a minimum of 12 hr of  
crankcase heat prior to initial start-up, may result in a compressor  
chattering noise and possible damage to the compressor.  
70  
60  
50  
40  
30  
20  
2. Fully back seat (open) liquid and vapor tube service valves.  
3. Unit is shipped with valve stem(s) front seated and caps  
installed. Replace stem caps after system is opened to refrig-  
erant flow (back seated). Replace caps finger tight and tighten  
additional 1/12 turn (20 ft-lb torque) with wrench.  
10  
4. Close electrical disconnects to energize system.  
0
0
5. Set room thermostat at desired temperature. Be sure set point  
is below indoor ambient and is set low enough to energize  
desired speed.  
20  
40  
60  
80  
100  
120  
TEMPERATURE (DEG. F)  
A91431  
NOTE: Carrier 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.  
Fig. 13—Resistance Values Versus Temperature  
Step 10—Start-Up  
To prevent compressor damage or personal 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. Set room thermostat to COOL and fan control to AUTO or ON  
as desired. Wait for appropriate time delay(s). Operate unit for  
15 minutes. Check refrigerant charge.  
NOTE: If unit has not operated within the past 12 hr 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.  
10  
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Step 11—Check Charge  
Table 3—Required Liquid-Line Temperature (°F)  
REQUIRED SUBCOOLING  
TEMPERATURE  
(°F)  
LIQUID  
PRESSURE AT  
SERVICE VALVE  
(PSIG)  
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.  
8
12  
56  
14  
54  
16  
52  
18  
50  
18  
48  
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  
52404  
54  
50  
62  
60  
58  
56  
52  
64  
62  
60  
58  
56  
54  
UNIT CHARGE  
66  
64  
62  
60  
58  
56  
Factory charge and charging method are shown on pink charging  
label. With unit operating, charge Puron® units with liquid using  
a commercial type metering device in manifold hose. Charge  
refrigerant into suction line.  
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: Unit is to be charged in high capacity only. Charging in  
low capacity may cause compressor chattering and possible  
damage to the compressor.  
76  
74  
72  
70  
68  
66  
78  
76  
74  
72  
70  
68  
80  
78  
76  
74  
72  
70  
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.  
82  
80  
78  
76  
74  
72  
84  
82  
80  
78  
76  
74  
86  
84  
82  
80  
78  
76  
88  
86  
84  
82  
80  
78  
90  
88  
86  
84  
82  
80  
92  
90  
88  
86  
84  
82  
COOLING ONLY PROCEDURE  
94  
92  
90  
88  
86  
84  
1. Operate unit a minimum of 15 minutes before checking  
charge.  
96  
94  
92  
90  
88  
86  
98  
96  
94  
92  
90  
88  
2. Measure liquid service valve pressure by attaching an accurate  
gage to service port.  
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  
3. Measure liquid line temperature by attaching an accurate  
thermistor type or electronic thermometer to liquid line near  
outdoor coil.  
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  
4. Refer to Table 4 for required subcooling temperature.  
100  
102  
104  
106  
108  
110  
112  
114  
116  
118  
5. Refer to Table 3. Find the point where required subcooling  
temperature intersects measured liquid service valve pressure.  
6. To obtain required subcooling temperature at a specific liquid  
line pressure, add refrigerant if liquid line temperature is  
higher than indicated or reclaim refrigerant if temperature is  
lower. Allow a tolerance of ± 3°F.  
.
UNIT CHARGE  
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.  
the unit returns to low-speed operation until first stage is satisfied  
or until second stage is required again. When both first stage and  
second stage cooling are satisfied, the compressor will shut off.  
NOTE: If unit has not operated within the past 12 hr, or following  
a unit power-up, upon the next thermostat high- or low-speed  
demand, unit operates for a minimum of 5 minutes on high-speed.  
NOTE: Unit is to be charged in high capacity only. Charging in  
low capacity may cause compressor chattering and possible  
damage to the compressor.  
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.  
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.  
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.  
Step 12—System Functions and Sequence of Operation  
STATUS FUNCTION LIGHTS  
The outdoor unit control system has special functions. The  
following is an overview of the two-speed control functions:  
A system control STATUS function light is located on the outdoor  
unit control board. (See Fig. 12.) The STATUS light provides  
indication signals for several system operations. See Table 5 for  
codes and definitions. Table 5 also provides the order of signal  
importance.  
COOLING OPERATION  
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,  
NOTE: Only one code will be displayed on the outdoor unit  
control board (the most recent, with the highest priority).  
11  
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switch or compressor overload should open. 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.  
Table 4—High Capacity Only Subcooling  
TXV TYPE EXPANSION DEVICE  
UNIT  
HIGH CAPACITY ONLY  
COMPRESSOR VOLTAGE FAILURE (6 FLASHES)  
SUBCOOLING AT SERVICE VALVE  
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:  
024  
036  
037  
048  
060  
14°F  
15°F  
11°F  
12°F  
16°F  
Table 5—Control Function LED Code  
SIGNAL  
IMPORTANCE*  
CODE  
DEFINITION  
Constant flash  
No pause  
No demand  
Stand by  
10  
1 flash  
w/pause  
compressor internal overload trip (refer to Table 6 for correct  
winding resistance)  
Low-speed operation  
High-speed operation  
Outdoor thermistor failure  
9
8
7
2 flashes  
w/pause  
no 240 volt power supply to outdoor unit  
failed compressor contactor(s)  
failure of start relay to pick-up properly  
improper wiring  
3 flashes  
w/pause  
4 flashes  
PRESSURE SWITCH PROTECTION  
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:  
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.  
FACTORY DEFAULTS  
MAJOR COMPONENTS  
Factory defaults have been provided in the event of failure of  
outdoor air thermistor, coil thermistor, and/or furnace interface  
jumper.  
2-Speed Control  
The two-speed control board controls the following functions:  
- Low- and high-compressor contactor operation  
- Outdoor fan motor operation  
- Crankcase heater operation  
- Compressor protection  
- Pressure switch monitoring  
- Time delays  
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.  
COMPRESSOR OPERATION  
When the compressor operates in second stage 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 single stage operation the  
motor reverses direction (rotates counterclockwise). The lower  
piston becomes idle and the upper piston compresses refrigerant.  
The start and run windings are reversed.  
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.  
Dual Capacity Compressor  
The dual capacity compressor contains motor windings that  
provide 2-pole (3500 RPM) operation. Refer to Table 6 for correct  
winding resistance.  
CRANKCASE HEATER OPERATION  
The two-speed control board energizes the crankcase heater during  
unit off cycle.  
Compressor Internal Relief  
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.  
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 compressor speed change time delay and if a pressure  
with adhesive tape. A small piece of TXV bulb insulation tape may  
be used.  
Table 6—Two-Speed Compressor  
(Winding Resistance at 70°F ± 20°)  
IMPORTANT: If outdoor air thermistor is not properly placed  
underneath base pan, unit may see nuisance thermistor out of  
frame faults.  
WINDING  
Start (S-C)  
Run (R-C)  
024  
036–037  
1.850  
048  
060  
2.280  
0.770  
1.459  
0.552  
0.740  
0.356  
0.745  
Step 13—Final Checks  
IMPORTANT: Before leaving job, be sure to do the following:  
Compressor Control Contactors  
1. Ensure that all wiring and tubing is secure in unit before  
adding panels and covers. Securely fasten all panels and  
covers.  
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.  
2. Tighten service valve stem caps to 1/12-turn past finger tight.  
TEMPERATURE THERMISTORS  
3. Leave Owner’s Manual with owner. Explain system operation  
and periodic maintenance requirements outlined in manual.  
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.  
4. Fill out Dealer Installation Checklist and place in customer  
file.  
CARE AND MAINTENANCE  
If the outdoor ambient or coil thermistor should fail, a fault code  
appears at two-speed control.  
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.  
IMPORTANT: Outdoor Air Thermistor Placement  
Mount outdoor air thermistor underneath unit base pan lip on  
control box side of the unit as shown in Fig. 14. Attach to base pan  
13  
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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  
Fig. 15—Wiring Diagram—024, 036, 048  
A01513  
14  
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DUAL CAPACITY  
CONNECTION DIAGRAM L1  
BLK  
BRN  
BLK  
L2  
YEL  
208 / 230 - 1 - 60  
RED  
BLU  
POWER SUPPLY  
CH  
11  
11  
21  
23  
23  
23  
23  
C L  
EQUIP GND  
21  
YEL  
BLU  
NOTE #10  
COMP  
BRN  
BLK  
R
BLU  
BLU  
C
RED  
BLU  
BRN  
S
BRN  
1
2
3
4
5
1
2
PL1  
HP/AC  
C
EXV RVS  
C
HI LO PL2  
BRN  
LPS  
LPS  
START  
CAP  
1
2
3
YEL/PNK  
YEL/PNK  
PL3  
FORCED  
DEFROST  
C
H
COMP  
CAP  
HPS  
OAT  
OCT  
BRN  
HPS  
PL4  
BLU/PNK  
BLU/PNK  
1
2
BLU  
YEL  
PWM 2  
PWM 1  
DEFROST  
TIME (MIN)  
5
1
-t°  
-t°  
BLU  
BLK  
BLK  
BRN  
BRN  
YEL  
OAT  
PL5  
1
2
2
BLU  
START RELAY  
BRN  
4
5
COMM STATUS  
OCT  
O
Y
2
GRN/YEL  
BRN  
BLU  
VC  
Y
YEL  
1
BRN  
VH  
ODF  
L 2  
W
BLU  
BLK  
YEL  
RED  
1
A
B
C
D
C
R
OFM  
CCH  
RED  
CCH  
TO INDOOR UNIT  
Fig. 16—Wiring Diagram—037  
A01439  
15  
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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  
Fig. 17—Wiring Diagram—060  
A02212  
Copyright 2002 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231  
38tdb4si  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Book  
Tab 3a 2a  
1
4
PC 101  
Catalog No. 533-80059  
Printed in U.S.A.  
Form 38TDB-4SI  
Pg 16  
8-02  
Replaces: 38TDB-3SI  
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