Ducane HVAC Heat Pump 2HP13 14 User Manual

2HP13/14 & 4HP13 SPLIT SYSTEM HEAT PUMP  
INSTALLATION / START-UP INSTRUCTIONS  
/HOMEOWNERS INFORMATION MANUAL  
These instructions must be read and understood completely before attempting installation.  
TABLE OF CONTENTS  
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Unit Location & Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Rooftop Installation & Recommendations . . . . . . . . . . . . . . . . . . . .  
Indoor Coil Piston Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Refrigeration Line Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Installation of Line Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Evacuating & Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Opening Service Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2
2
3
3
3
4
4
4
5
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Adjusting charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Defrost System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Single Phase Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
5
5
6
6
7
9
3 Phase Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Homeowner's Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
These units are designed for use in residential and light commercial type buildings. Heat Pumps may only be  
installed with indoor combinations listed in the Air-Conditioning and Refrigeration Institute (ARI) Directory of  
Certified Products.  
Inspect the unit for any damage before installation. If damage is found, notify the transportation company  
immediately and file a concealed damage claim.  
Installation or repairs made by unqualified persons can result in hazards to you and others. Installation  
MUST conform with local building codes and with the National Electrical Code NFPA 70/ANSI C1-1993 or  
current edition and Canadian Electrical Code Part 1 CSA C22.1.  
Improper installation, adjustment, alteration, service or maintenance will void the warranty. The qualified installer or  
agency must use factory-authorized kits or accessories when added to this products. Refer to the individual instructions  
included with the specific accessory kit.  
NOTE  
These instructions are intended as a general guide and do not supersede national, state or local codes in any way.  
These instructions must be left with the property owner.  
506162-02  
Issue 0847  
Page 1 of 14  
 
Elevate Unit  
DO LOCATE THE UNIT:  
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With proper clearances on sides and top of unit  
On a solid, level foundation or pad  
To minimize refrigerant line lengths  
Accumulation of water and ice in base pan may  
cause equipment damage.  
Elevate unit per local climate and code requirements to  
provide clearance above estimated snowfall level and  
ensure adequate drainage of unit. Use snow stand in  
areas where prolonged freezing temperatures are  
encountered.  
DO NOT LOCATE THE UNIT:  
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On brick, concrete blocks or unstable surfaces  
Near clothes dryer exhaust vents  
Near sleeping area or near windows  
Under eaves where water, snow or ice can fall  
directly on the unit  
If conditions or local codes require the unit be attached  
to pad or mounting frame, tie down bolts should be used  
and fastened through knockouts provided in unit base pan.  
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!
with clearance less than 2 ft. from a second unit  
with clearance less than 4 ft. on top of unit  
Operating Ambient  
The minimum outdoor operating ambient in cooling  
mode is 55/F, and the maximum outdoor operating  
ambient in cooling mode is 125/F. The maximum outdoor  
operating ambient in heating mode is 66/F.  
Roof Top Installations  
Mount on level platform or frame 6 inches above roof  
surface. Place unit above a load-bearing wall and isolate  
unit and tubing set from structure. Arrange supporting  
members to adequately support unit and minimize  
transmission of vibration to building. Ensure roof structure  
and anchoring method is adequate for location. Consult  
local codes governing rooftop applications.  
Indoor Coil Piston Selection  
The outdoor heat pump section must be matched to a  
factory approved indoor section. It is mandatory that the  
installer ensure that the correct piston is installed in the  
indoor section. If necessary remove the existing piston and  
Roof mounted units exposed to winds above 5 mph  
may require wind baffles to achieve adequate defrost. A  
sheet metal baffle should be spaced 6-1/2" from the fall of  
the coil. The height should cover the face of the coil and  
the length should be 6" from the access panel.  
replace it with the correct piston  
See  
indoor unit  
instructions for details of changing the piston. Contact  
your distributor for accessory piston kits.  
Indoor (Cooling) Piston Size  
NOTE: Unit must be level to within ± 2/ (± 3/8 in./ft) per  
compressor manufacturer specifications.  
13 SEER Heat Pump Indoor Piston Sizes  
Unit Size  
2HP13  
.055  
.063  
.068  
.076  
.076  
.082  
.098  
4HP13  
.051  
.055  
.059  
.070  
.070  
.082  
.082  
18  
24  
30  
36  
42  
48  
60  
Clearance Requirements  
When installing, allow sufficient space for airflow  
clearance, wiring, refrigerant piping, and service. For  
proper airflow, quiet operation and maximum efficiency.  
Position so water, snow, or ice from roof or eaves cannot  
fall directly on unit.  
The evaporator coil may use an expansion valve (TXV) in place of piston.  
NOTE: If a TXV is installed a hard start kit is required on  
all models with reciprocating compressors. See spec  
sheet for proper kit selection.  
14 SEER Heat Pump Models  
All 14 SEER heat pump models are only rated with TXV on  
the indoor side.  
14 SEER Heat Pump Indoor TXV  
Unit Size  
18 thru 36  
42 thru 48  
TXV Kit  
TXV3  
TXV5  
Refrigeration Line Sets  
Use only refrigerant grade copper tubes. Split  
systems may be installed with up to 50 feet of line set (no  
more than 20 feet vertical) without special consideration  
(see long line set guidelines).  
506162-02  
Issue 0847  
 
Page 3 of 14  
The following is the recommended method for making  
braze connections at the refrigerant line connections:  
1. Debur and clean refrigerant tube end with emery  
cloth or steel brush.  
Recommended Liquid & Vapor Tube Diameters (In.)  
Unit  
Size  
018  
024  
030  
036  
042  
048  
060  
LIQUID  
VAPOR  
Connection Dia. Tube Dia. Connection Dia. Tube Dia.  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/8"  
3/4  
3/4  
3/4  
3/4  
7/8  
7/8  
7/8  
3/4  
3/4  
3/4  
2. Insert tubing into swage fitting connection.  
3. Wrap wet rags over valves to protect from heat.  
4. Allow dry nitrogen to flow through refrigerant lines.  
5. Braze joint, using a suitable brazing alloy for copper  
to copper joints.  
3/4  
7/8  
7/8  
*1-1/8  
*FIELD SUPPLIED 7/8 X 1-1/8 CONNECTOR REQUIRED ON BOTH  
ENDS OF VAPOR TUBING.  
6. Quench the joint and tubing with water using a wet  
rag. Leave rag on fitting body and re-wet with water  
to help cool area.  
It is important that no tubing be cut or seals broken  
until you are ready to actually make connections to the  
evaporator and to the condenser section. DO NOT remove  
rubber plugs or copper caps from the tube ends until ready  
to make connections at evaporator and condenser. Under  
no circumstances leave the lines open to the atmosphere  
for any period of time, if so unit requires additional  
evacuation to remove moisture.  
Leak Check  
Refrigeration lines and indoor coil must be checked for  
leaks after brazing and before evacuation.  
The  
recommended procedure is to apply a trace amount of  
vapor refrigerant (approximately two ounces or 3 psig) into  
the line set and indoor coil, then pressurize with 150 psig  
of dry nitrogen. Use a refrigerant leak detector to check all  
joints. The system may also be checked for leaks using a  
Be extra careful with sharp bends. Tubing can "kink"  
very easily, and if this occurs, the entire tube length will  
have to be replaced. Extra care at this time will eliminate  
future service problems.  
halide torch or pressure and soapy solution.  
After  
completion of leak check, relieve all pressure from system  
before evacuation.  
It is recommended that vertical suction risers not be  
up-sized. Proper oil return to the compressor should be  
maintained with suction gas velocity.  
Evacuating And Charging Instructions  
NOTE: Intentional release of CFC or HCFC refrigerant  
to the atmosphere violates Federal Law. It may  
also violate State and Local Codes. Check all  
Federal, State and Local Codes before  
proceeding.  
Installation of Line Sets  
DO NOT fasten liquid or suction lines in direct contact  
with the floor or ceiling joist.  
Use an insulated or  
suspension type of hanger. Keep both lines separate, and  
always insulate the suction line. Long liquid line runs (30  
feet or more) in an attic will require insulation. Route  
refrigeration line sets to minimize length.  
These outdoor units are pre-charged at the factory with  
adequate refrigerant to handle 15 feet of refrigerant tubing.  
DO NOT let refrigerant lines come in direct contact with  
foundation. When running refrigerant lines through the  
foundation or wall, openings should allow for a sound and  
vibration absorbing material to be placed or installed  
NOTE: DO NOT use any portion of the charge for purging  
or leak testing. It is mandatory that a thorough  
evacuation of the refrigeration lines and indoor coil  
be performed.  
between tubing and foundation.  
Any gap between  
foundation or wall and refrigerant lines should be filled with  
a vibration damping material.  
The liquid line and suction line service valves have been  
closed after final testing at the factory. DO NOT disturb  
these valves until the lines have been leak checked and  
evacuated or the charge in the unit may be lost.  
If ANY refrigerant tubing is buried, provide a 6 inch  
vertical rise at service valve. Refrigerant tubing  
lengths up to 36 inches may be buried without further  
special consideration. For lengths above 36 inches,  
consult your local distributor.  
1. Connect the vacuum pump to the center hose of the  
manifold gauge set, the low-pressure manifold  
gauge to the vapor service valve and the high  
pressure manifold gauge to the liquid service valve.  
NOTE: Unnecessary switching of hoses can be avoided  
and complete evacuation of all lines can be  
achieved by also connecting a branch hose from  
the manifold gauge center port to a cylinder of the  
proper refrigerant. Provide a separate shut-off  
valve to vacuum pump to avoid contaminating  
vacuum pump oil with refrigerant.  
Before making braze connections, be sure all joints are  
clean. Before heat is applied for brazing, dry nitrogen  
should be flowing through the tubing to prevent oxidation  
and scale formation on the inside of the tubing.  
506162-02  
Issue 0847  
 
Page 4 of 14  
2. The valves should be kept in the "front seated"  
(closed) position. This will allow evacuation of the  
refrigeration lines and the indoor coil, without  
disturbing the factory charge in the outdoor unit.  
Provide line voltage power supply to unit from a properly  
sized disconnect switch. Route power and ground wires  
from disconnect switch to unit. Line voltage connections  
are made at the line side of the contactor in the control box  
of the outdoor unit. Follow the appropriate wiring diagram  
attached to inside of the access panel.  
3. Follow  
the  
vacuum  
pump  
manufacturer's  
instructions. Allow the pump to operate until the  
system has been evacuated down to 300 microns.  
Allow the pump to continue running for an additional  
15 minutes. Turn OFF the pump and leave the  
connections secured to the two (2) service valves.  
After 5 minutes, if the system fails to hold 500  
microns or less, check all connections for tight fit and  
repeat the evacuation procedure.  
Proper circuit protection recommendations are indicated  
on Unit Rating Plate. Time delay fuses are required to  
prevent blowing due to starting current (the current in rush  
when equipment starts is referred to as the Locked Rotor  
Amps or (LRA). A fuse of this kind properly sized will give  
maximum equipment protection.  
4. Isolate the vacuum pump from the system by closing  
the shutoff valves on the gauge-set. Disconnect the  
vacuum pump.  
Use copper wire only between disconnect switch and  
unit.  
Remove access panel to gain access to unit wiring.  
Extend wires from disconnect through power wiring hole  
provided and into unit control box. Flexible conduit is  
required for the swing out control box feature.  
Opening Service Valves  
After evacuation of the connecting lines, remove the  
service valve cap and fully insert the hex wrench into the  
stem. A back-up wrench is required on the valve body to  
open the valve stem. Back-out counterclockwise until the  
valve stem just touches the coined edge.  
The unit cabinet must have an 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.  
Wrench sizes:  
3/8 service valve: 3/16" Hex wrench  
3/4 service valve: 5/16" Hex wrench  
7/8 service valve: 5/16" Hex wrench  
Replace service valve cap and torque to 8-11 ft-lb on 3/8"  
valves; 12-15 ft-lb on 3/4" valves; 15-20 ft-lb on 7/8" valves.  
Use backup wrench on valve body when torqueing valve  
cap.  
Connect ground wire to ground connection in control box  
for safety. Connect power wiring to contactor.  
High voltage power connections to 3-phase models is  
made to "Pig Tail" leads with field supplied splice  
connectors.  
Install Electrical Accessories  
Refer to the instructions packaged with the accessories.  
Control Wiring  
The control voltage is 24 Vac. NEC Class I insulated 18  
AW G is required for control wiring. For lengths longer than  
150 feet, contact your local distributor for technical service.  
Electrical Connections  
ELECTRICAL SHOCK HAZARD!  
Turn OFF electricpower beforeconnecting unit,  
performing any maintenance or removing  
panels or doors. More than one disconnect  
may be required to turn off all power.  
Ensure the room thermostat is properly installed per  
instructions shipped with room thermostat. Generally the  
thermostat should not be exposed to sunlight, drafts or  
vibration and should not be mounted on exterior walls.  
Low voltage control wire connections should be made to  
the screw connection terminal board mounted on the  
defrost control as shown. All low voltage control wiring  
must be separated from incoming power leads.  
FAILURE TO DO SO COULD RESULT IN BODILY  
INJURY OR DEATH.  
Be sure to check all local codes to determine that the unit  
is installed accordance with local requirements. Consult  
the National Electric Code for wire size requirements. Use  
60/ C wire or higher. Always provide ground connections  
to the outdoor unit. Power supply must agree with rating  
on unit nameplate.  
506162-02  
Issue 0847  
 
Page 5 of 14  
Adjusting Charge  
Factory charge is shown on the rating label located on  
the access panel.  
All split system heat pumps are factory charged for  
15 feet of connecting line set and matched indoor fan  
coil. Nameplate refrigerant charge should initially be  
adjusted for line set lengths other than 15 feet. For line  
sets shorter than 15 feet in length, remove charge. For line  
sets longer than 15 feet, add charge. Oil charge is  
sufficient for all line lengths.  
Refrigeration Charge Adjustment  
Liquid Line Diameter Oz. Per Linear Foot *  
3/8" .6  
* Factory charge for series is for 15' (ft.) line sets and matched fan  
coil.  
Before final adjustment is made to the refrigerant charge,  
it is imperative that proper indoor airflow be established.  
Airflow will be higher across a dry coil versus a wet coil.  
Blower charts are calculated with a dry or wet coil basis.  
Recommended airflow is 350-450 CFM per ton (12,000  
Btuh) through a wet coil. Refer to indoor unit instructions  
for methods of determining air flow and blower  
performance.  
Heat Pump Application with Electric Heat  
Emergency Heat (heating heat pump)  
If selector switch on thermostat is set to the emergency  
heat position, the heat pump will be locked out of the  
heating circuit, and all heating will be electric heat ( if  
applicable). A jumper should be placed between W and E  
on the thermostat so that the electric heat control will  
transfer to the first stage heat on the thermostat. This will  
allow the indoor blower to cycle on and off with the electric  
heat when the fan switch is in the AUTO position.  
Cooling Cycle Charge Adjustment  
The optimum method for checking the charge is by  
weight. However the following methods may be used  
to confirm the proper charge:  
Units with Indoor Pistons  
Units installed with indoor pistons require charging with  
the superheat method.  
* Add Jumper on Subbase (Optional)  
The following procedure is valid when indoor airflow is  
within ± 20% of its rated CFM.  
Start-Up Procedure  
1. Check to ensure:  
1. Operate unit a minimum of 10 minutes before  
checking charge.  
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Service valve and gage port caps are installed and  
tightened.  
2. Measure suction pressure by attaching a gage to  
suction valve service port. Do not use compressor  
suction port. Determine saturation temp from T/P  
chart.  
Voltage supply at unit agrees with nameplate  
rating.  
Field wiring connections are tight and factory  
wiring has not been disturbed and are tight.  
Indoor fan motor is on correct speed tap.  
3. Measure suction temperature by attaching an  
accurate thermistor type or electronic thermometer  
to suction line at service valve.  
2. Set thermostat selector switch to OFF and fan control  
switch to "Auto" is so equipped.  
4. Calculate superheat (measured temp. — saturation  
temp.).  
3. Close electrical disconnects to energize system.  
4. Set room thermostat at desired temperature. Be sure  
set point is below indoor ambient temperature.  
5. Set the system switch of the thermostat on COOL (or  
HEAT if applicable) and fan switch for continuous  
operation (ON) or AUTO, as desired. There will be a  
5 minute short cycle compressor delay on startup.  
Operate unit for 15-20 minutes, then check the system  
refrigerant charge.  
5. Measure outdoor air dry-bulb temperature with  
thermometer.  
6. Measure indoor air (entering indoor coil) wet-bulb  
temperature with a sling psychrometer.  
7. Compare superheat reading at service valve with the  
chart located on control box cover.  
8. If unit has a higher suction line temperature than  
charted temperature, add refrigerant until charted  
temperature is reached.  
6. Adjust refrigerant charge per "Adjusting Charge"  
section.  
9. If unit has a lower suction line temperature than  
charted temperature, reclaim refrigerant until charted  
temperature is reached.  
506162-02  
Issue 0847  
 
Page 6 of 14  
10. Remove charge if superheat is low and add charge  
if superheat is high.  
SYSTEM OPERATION  
The outdoor unit and indoor blower cycle on demand  
from the room thermostat. When the thermostat blower  
switch is in the ON position, the indoor blower operates  
continuously.  
Required Subcooling  
(± I/F)  
Model  
2HP13  
2HP14  
4HP13  
18  
24  
30  
36  
42  
48  
60  
14  
9
10  
3
12  
14  
17  
10  
16  
7
13  
9
8
Filter Drier  
14  
3
The outdoor unit is equipped with a bi-flow filter drier. If  
replacement is necessary, order new dryer according to the  
service parts manual.  
11  
8
9
12  
-
13  
Emergency Heat Function (Room Thermostat)  
NOTE: If a TXV is installed on indoor unit, a hard start kit  
is required on all models with reciprocating compressors.  
Refer to the specification sheet for details. Hard start kits  
are also recommended for areas with utility power lower  
than 208 Vac.  
An emergency heat function is designed into some room  
thermostats. This feature is applicable when isolation of  
outdoor unit is required or when auxiliary electric heat is  
staged by outdoor thermostats. When the room thermostat  
is placed in the emergency heat position, the outdoor unit  
control circuit is isolated from power and field-provided  
Units with Indoor TXV  
Units installed with TXV on indoor side, require charging  
with the subcooling method.  
relays bypass the outdoor thermostats.  
An amber  
indicating light simultaneously comes on to remind the  
homeowner that he is operating in the emergency heat  
mode.  
1. Operate unit a minimum of 10 minutes before  
checking charge.  
2. Measure liquid service valve pressure by attaching  
Emergency heat is usually used during an outdoor unit  
shutdown, but it should also be used following a power  
outage. If power has been off for over an hour and the  
outdoor temperature is below 50/F (10/C). System should  
be left in the emergency heat mode at least six hours to  
allow the crankcase heater sufficient time to prevent  
compressor slugging. This applies only to systems with  
crank case heaters.  
an accurate gage to service port.  
saturation temp. from T/P chart.  
Determine  
3. Measure liquid line temperature by attaching an  
accurate thermistor type or electronic thermometer  
to liquid line near outdoor coil.  
4. Calculate subcooling (saturation temp.— measured  
temp.).  
5. Find the point where required subcooling  
temperature intersects measured liquid service valve  
pressure.  
Defrost System  
The defrost system includes two (2) components:  
defrost thermostat and a defrost control.  
a
6. Add refrigerant if subcooling is lower than table  
below. Recover refrigerant if subcooling is high.  
Defrost Thermostat  
Heating Check Chart Procedure  
The defrost thermostat is located on the outdoor coil of  
most models and on the liquid line between the  
check/expansion valve and the distributor on R-4110A TXV  
equipped models. When defrost thermostat senses 29/F  
(42/ on R-410A TXV’s) or cooler, the thermostat contacts  
close and send a signal to the defrost control board to start  
the defrost timing. It also terminates defrost when the  
liquid line warms up to 60/F.  
To check system operation during heating cycle, refer to  
the Heating Check Chart located on back of control box  
cover. This chart indicates whether a correct relationship  
exists between system operating pressure and air  
temperature entering indoor and outdoor units. If pressure  
and temperature do not match on chart, system refrigerant  
charge may not be correct. Do not use chart to adjust  
refrigerant charge.  
Defrost Control  
Charge must be rechecked again during the cooling  
season.  
The defrost control board includes the combined  
functions of a time/temperature defrost control, defrost  
relay, diagnostic LEDs and terminal strip for field wiring  
connections.  
Cold Weather Application  
A cold weather accessory kit may be required for heat  
pumps operating at ambient conditions below 25/ F.  
Supplemental heat should be provided for these conditions  
due to the expected performance degeneration.  
The control provides automatic switching from normal  
heating operation to defrost mode and back. During  
compressor cycle, the control accumulates compressor  
run times at 30-, 60-, or 90-minute field-adjustable  
506162-02  
Issue 0847  
 
Page 7 of 14  
intervals. If the defrost thermostat is closed when the  
selected compressor run time interval ends (call for  
defrost), the defrost relay is energized and defrost begins.  
The factory setting is 60 minutes. However, if frost  
defrost mode when the compressor delay jumper is  
removed.  
NOTE: The 30 second "off" cycle is not functional when  
jumpering the TEST pins.  
Time Delay  
The timed-off delay is 5 minutes long. The delay help to  
protect the compressor from short-cycling in case the  
power to the unit is interrupted or a pressure switch opens.  
The delay is bypassed by placing the timer select jumper  
across the TEST pins for 0.5 seconds.  
Pressure Switch Circuit  
The defrost control incorporates 2 pressure switch  
circuits. The optional high pressure switch connects to the  
boards HI PS terminals. The low pressure switch is factory  
installed.  
During a single demand cycle, the defrost control will lock  
out the unit after the fifth time that the circuit is interrupted  
by any pressure switch wired to the control board. In  
addition, the diagnostic LEDs will indicate a locked-out  
pressure switch after the fifth occurrence of an open  
pressure switch. The unit will remain locked out until  
power to the board is interrupted, then re-established or  
until the jumper is applied to the TEST pins for 0.5  
seconds.  
accumulation is easily cleared, the optimum efficiency  
setting is 90 minutes.  
Outdoor Unit Defrost Control Board  
Defrost Control Timing Pins  
Each timing pin selection provides  
a
different  
NOTE: The defrost control board ignores input from the  
low-pressure switch terminals as follows:  
accumulated compressor run time period for one defrost  
cycle. This time period must occur before a defrost cycle  
is initiated. The defrost interval can be adjusted to 30  
(/T1), 60 (T2), or 90 (T3) minutes. The defrost timing  
jumper is factory-installed to provided a 90-minute defrost  
interval. If the timing selector jumper is not in place the  
control defaults to a 90-minute defrost interval. The  
maximum defrost period is 14 minutes and cannot be  
adjusted.  
!
!
!
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During the TEST mode,  
During the defrost cycle,  
During the 90 second start-up period,  
and for the first 90 seconds each time the reversing  
valve switches heat/cool modes. If the TEST pins  
are jumpered and the 5 minute delay is being by-  
passed, the LO PS terminal signal is not ignored  
during the 90 second start-up period.  
A TEST option is provided for troubleshooting. The  
TEST mode may be started any time the unit is in the  
heating mode and the defrost thermostat is closed or  
jumpered. If the jumper is in the TEST position at power-  
up, the control will ignore the test pins. When the jumper  
is placed across the TEST pins for 2 seconds, the control  
will enter the defrost mode. If the jumper is removed  
before an additional 5 second period has elapsed ( 7  
seconds total), the unit will remain in defrost mode until the  
defrost thermostat opens or 14 minutes have passed. If  
the jumper is not removed until after the additional 5  
second period has elapsed, the defrost will terminate and  
the test option will not function again until the jumper is  
removed and re-applied.  
Diagnostic LEDS  
The defrost board uses 2 LEDs for diagnostics. The  
LEDs flash a specific sequence according to the condition.  
Defrost Control board Diagnostic LED  
Green LED (DS2)  
OFF  
Mode  
No power to control  
Red LED (DS1)  
OFF  
Normal operation/  
power to control  
Simultaneous Slow FLASH  
Alternating Slow FLASH  
Anti-short cycle  
lockout  
Low pressure switch  
fault (Optional)  
OFF  
Slow FLASH  
Low pressure switch  
lockout (Optional)  
High pressure switch  
fault (Optional)  
High pressure Switch  
lockout (Optional)  
OFF  
ON  
Slow FLASH  
ON  
OFF  
OFF  
Compressor Delay  
The defrost board has a field-selectable function to  
reduce occasional sounds that may occur while the unit is  
cycling in and out of the defrost mode. The compressor  
will be cycled "off" for 30 seconds going in and out of the  
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H/P SINGLE PHASE WIRING DIAGRAM  
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H/P 3 PHASE WIRING DIAGRAM  
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Homeowner's Information  
information below is typical for most thermostats. Ask your  
dealer for specific information regarding the model of  
thermostat installed.  
ELECTRICAL SHOCK HAZARD!  
Turn OFF electric power to unit before performing  
any maintenance or removing panels or doors.  
Temperature Setting Levers  
Most heat pump thermostats have 2 temperature  
selector levers: one for heating and one for cooling. Set  
the levers or dials to the desired temperature set points for  
both heating and cooling. Avoid frequent temperature  
adjustment; turning the unit off and back on before  
pressures equalize puts stress on the unit compressor.  
FAILURE TO DO SO COULD RESULT IN BODILY  
INJURY OR DEATH.  
Heat Pump Operation  
Your new heat pump has several characteristics that you  
should be aware of:  
On heat pump systems, increasing your thermostat  
setting by more than 2 degrees may cause supplemental  
heaters to turn on, reducing potential energy savings.  
!
Heat pumps satisfy heating demand by delivering  
large amounts of warm air into the living space. This  
is quite different from gas-or oil-fired furnaces or an  
electric furnace which deliver lower volumes of  
considerably hotter air to heat the space.  
Fan Switch  
!
Do Not be alarmed if you notice frost on the outdoor  
coil in the winter months. Frost develops on the  
outdoor coil during the heating cycle when  
temperatures are below 45/F. An electronic control  
activates a defrost cycle lasting 5 to 15 minutes at  
preset intervals to clear the outdoor coil of the frost.  
During the defrost cycle, you may notice steam rising  
from the outdoor unit. This is a normal occurrence.  
The thermostat may engage auxiliary heat during the  
defrost cycle to satisfy a heating demand; however.,  
the unit will run to normal operation at the conclusion  
of the defrost cycle.  
In AUTO or INT (intermittent ) mode, the blower operates  
only when the thermostat calls for heating or cooling. This  
mode is generally preferred when humidity control is a  
priority. The ON or CONT mode provides continuous  
indoor blower operation, regardless of whether the  
compressor or auxiliary heat are operating. This mode is  
required when constant air circulation or filtering is desired.  
!
System Switch  
Set the system switch for heating, cooling or auto  
operation. The auto mode allows the heat pump to  
automatically switch from heating mode to cooling mode to  
maintain predetermined comfort settings. Many heat pump  
thermostats are also equipped with an emergency heat  
mode which locks out heat pump operation and provides  
temporary heat supplied by the auxiliary heat.  
In case of extended power outage...  
If the outdoor temperature is below 50/F and power to  
your outdoor unit has been interrupted for 6 hours or  
longer, observe the following when restoring power to your  
heat pump system.  
!
!
!
Set the room thermostat selector to the "Emergency  
Heat" setting to obtain temporary heat for a minimum  
of 6 hours. This will allow system refrigerant  
pressures and temperatures enough time to return  
to a stabilized condition.  
Indicating Light  
Most heat pump thermostats have an amber light which  
indicates when the heat pump is operating in the  
emergency heat mode.  
In Emergency Heat mode, all heating demand is  
satisfied by auxiliary heat; heat pump operation is  
locked out. After a 6 hour "warm-up" period, the  
thermostat can then be switched to the "Heat" setting  
and normal heat pump operation my resume.  
Heat pumps (in the cooling mode) remove humidity  
from your home. Depending on the amount of  
moisture in the air inside your home, water will trickle  
from the condensate drain of the cooling coil.  
Temperature Indicator  
The temperature indicator displays the actual room  
temperature.  
Fan Control  
For fan control your thermostat may have a Fan  
Selection Switch that allows you to run the fan continuously  
or cycle it automatically with the heating or cooling system.  
Switch the lever to ON for continuous operation and to  
AUTO for automatic cycling.  
Thermostat Operation  
The wall-mounted thermostat controls your air  
For maximum comfort satisfaction and continual air  
cleaning/filtering, constant fan operation is recommended.  
conditioner. The thermostat is available in various  
configurations from different manufacturers. The  
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On models without a fan Selection Switch, the fan will  
cycle with the outdoor unit.  
Periodically, debris should be brushed from the condenser  
coils.  
Important System Information  
!
SHARP OBJECT HAZARD!  
Your system should never be operated without a  
clean air filter properly installed.  
Condenser coils have sharp edges. Wear adequate  
body protection on body extremities (e.g. gloves).  
FAILURE TO FOLLOW THIS WARNING COULD  
RESULT IN BODILY INJURY.  
!
Return air and supply air registers should be free  
from restrictions or obstructions to allow full flow of  
air.  
Regular Maintenance Requirements  
Use a soft bristle brush with light pressure only. DO NOT  
damage or bend condenser coil fins. Damaged or bent fins  
may affect unit operation.  
Your system should be regularly inspected by a qualified  
service technician. These regular visits may include  
(among other things) checks for:  
!
!
!
!
!
!
!
!
!
!
!
Motor operation  
Ductwork air leaks  
Painted Surfaces  
For maximum protection of the unit's finish, a good grade  
of automobile wax should be applied every year. In  
geographical areas where water has a high concentration  
of minerals (calcium, iron, sulfur, etc.). It is recommended  
that lawn sprinklers not be allowed to spray the unit. In  
such applications, the sprinklers should be directed away  
from the unit. Failure to follow this precaution may result  
in premature deterioration of the unit finish and metal  
components.  
Coil & drainpan cleanliness (indoor & outdoor)  
Electrical component operation & wiring check  
Proper refrigerant level & refrigerant leaks  
Proper airflow  
Drainage of condensate  
Air filter(s) performance  
Blower wheel alignment, balance & cleaning  
Primary & secondary drain line cleanliness  
Proper defrost operation (heat pumps)  
In sea coast areas, special maintenance is required due  
to the corrosive atmosphere provided by the high salt  
concentration in ocean mists and the air. Periodic washing  
of all exposed surfaces and coil will add additional life to  
your unit. Please consult your installing dealer for proper  
procedures in your geographic area.  
There is some routine maintenance procedures you can  
do to help keep your system operating at peak  
performance between visits.  
Air Filter  
Inspect air filters at least monthly and replace or clean as  
required. Disposable filters should be replaced. Washable  
filters may be cleaned by soaking in mild detergent and  
rinsing with cold water. Replace filters with the arrows  
pointing in the direction of airflow. Dirty filters are the most  
common cause of poor heating / cooling performance and  
compressor failures.  
IF YOUR SYSTEM DOES NOT WORK,  
BEFORE REQUESTING A SERVICE CALL:  
1. Ensure thermostat is set below (cooling) or above  
(heating) room temperature and that the system lever  
is in the "COOL", "HEAT" or "AUTO" position.  
Indoor Coil  
2. Inspect your return air filter: If it is dirty your air  
conditioner may not function properly.  
If the system has been operated with a clean filter in  
place, it should require minimal cleaning. Use a vacuum  
cleaner and soft brush attachment to remove any  
accumulation of dust from the top and underside of the  
finned coil surface. However, perform this maintenance  
only when the coil is completely dry.  
3. Check indoor and outdoor disconnect switches.  
Confirm circuit breakers are ON or that fuses have not  
blown. Reset breakers/replace fuses as necessary.  
4. Inspect the outdoor unit for clogged condenser coils,  
(grass cuttings, leaves, dirt, dust or lint). Ensure that  
branches, twigs or other debris are not obstructing the  
condenser fan.  
If the coil cannot be cleaned by this method, call your  
dealer for service. It may need a detergent solution and  
rinsing with water for cleaning, which may require coil  
removal. You should not attempt this yourself.  
IF YOUR SYSTEM STILL DOES NOT OPERATE,  
CONTACT YOU SERVICING DEALER.  
Condensate Drain  
During cooling season check at least monthly for free  
flow of drainage and clean if necessary.  
Be sure to describe the problem, and have the model  
and serial numbers of the equipment available.  
If warranted replacements parts are required, the  
warranty must be processed through a qualified distribution  
location.  
Condenser Coils  
Grass cuttings, leaves, dirt, dust, lint from clothes dryers,  
and fall off from trees can be drawn into coils by movement  
of the air. Clogged condenser coils will lower the efficiency  
of your unit and could cause damage to the condenser.  
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ALLIED AIR ENTERPRISES  
EQUIPMENT LIMITED WARRANTY  
APPLIES IN U.S.A. AND CANADA ONLY  
FAILURE TO MAINTAIN YOUR EQUIPMENT WILL VOID THIS WARRANTY  
COVERED EQUIPMENT  
The following Allied Air Enterprises heating and cooling equipment is covered by the Limited Warranty:  
Condensing Units: 2SCU13, 4SCU13, 4SCU14, 4SCU16, 4SCU18, 2AC13, 2AC14,4AC13  
Heat Pumps: 2SHP13, 4SHP13, 2SHP14, 4SHP14, 4SHP16, 4SHP18, 2HP13, 2HP14, 4HP13  
Gas Furnaces: G1N80, G1D80, G2D80, G1D91,G1D93, G2D93, G2D95, FPBB, CG80, CG90, CG93, CG90UA  
Oil Furnaces: LBR80, LBF80, LHF80, LUF80, RULF, RLBR, RLBU, RLHF, RLHR  
Electric Furnaces: EFC, EFV  
Evaporator Coils: EC, EU, EH, EM  
Air Handlers: BCS2, RBCS2  
Package Equipment:: 2PCE13, 4PCE13, 4PCE15, 2PGE13, 4PGE13, 4PGE15, 2PHP13, 4PHP13, 4PHP15, 2SG13, 2SH13, 2SA13  
PARTS and COMPRESSOR COVERAGE  
The covered equipment and covered parts and compressor are warranted by Allied Air for a period of five (5) years from the date of the original installation, when installed in a residential application  
(which includes homes, duplexes, apartments and condominiums). The covered equipment and covered parts and compressor are warranted by Allied Air for a period of one (1) year from the date  
of the original installation, when installed in non-residential applications. If during this period, a covered component fails because of a manufacturing defect, Allied Air will provide a free replacement  
part to the owner through a licensed service contractor utilizing an Allied Air distributor. You must pay shipping charges and all other costs of warranty service. Allied Air will not pay labor involved  
in diagnostic calls or in removing, repairing, servicing or replacing parts. Such cost may be covered by a separate warranty provided by the installer.  
HEAT EXCHANGER EXTENDED COVERAGE  
All covered heat exchangers are warranted by Allied Air for a period of twenty (20) years from the date of original installation.  
Heat Exchanger Availability: If a replacement heat exchanger is no longer available for a unit covered by this warranty, Allied Air will allow a credit toward the purchase of an equivalent Allied  
Air furnace (at the current suggested distributor’s cost).  
NOTE: If the date of original installation cannot be verified, the warranty period will be deemed to begin ninety (90) days after the date of manufacture.  
EXCLUDED COMPONENTS  
The following components are not covered by this warranty: cabinets, cabinet pieces, air filters, driers, refrigerant, refrigerant line sets, belts, wiring, fuses, oil nozzles, unit accessories and any parts  
not affecting unit operation.  
CARE OF EQUIPMENT  
Your newAllied Air unit must be properly installed, operated and maintained in accordance with the unit installation, operation and maintenance instructions provided with each Allied Air unit. Failure  
to provide maintenance per Allied Air instructions will void this warranty.  
WARRANTY PROCEDURE  
When service or warranty parts are required:  
1. Call your local licensed service dealer or contractor  
3. Be prepared to furnish the following information:  
a. complete model and serial number  
b. proof of required periodic maintenance, installation date and location  
c. an accurate description of the problem  
WARRANTY LIMITATIONS  
1. This warranty is void if the covered equipment is removed from the original installation site.  
2. This warranty does not cover damage or defect resulting from:  
a. flood, wind, fire, lightning, mold, or installation and operation in a corrosive atmosphere, or otherwise in contact with corrosive material (chlorine, fluorine, salt, recycled waste water, urine,  
fertilizers, or other damaging substances or chemicals); accident, or neglect or unreasonable use or operation of the equipment including operation of electrical equipment at voltages  
other than the range specified on the unit nameplate (includes damages caused by brownouts)  
b. modification, change or alteration of the equipment, except as directed in writing by Allied Air  
c. operation with system components (indoor unit. outdoor unit and refrigerant control devices) which are not an ARI match or meet the specifications recommended by Allied Air  
d. operation of furnaces with return air temperatures of less than 60/ F (16/ C) or operation of a furnace field installed downstream from a cooling coil  
e. use of contaminated or refrigerant not compatible with the unit  
The installation of replacement parts under the terms of this warranty does not extend the original warranty period.  
Allied Air makes no express warranties other than the warranty specified above. All implied warranties, including the implied warranties of merchantability and fitness for a particular  
purpose, are excluded to the extent to aperiodlegallypermissible. Should such exclusionor limitationof the warranty be unenforceable, such implied warranties are in any event limited  
to a period of one (1) year. Liability for incidental and consequential damages is excluded. Some states do not allow limitation of incidental damages, so the limitations or exclusions  
may not apply to you. Allied Air will not pay electricity or fuel costs, or increases in electricity or fuel costs, for any reason whatsoever, including additional or unusual use of  
supplemental electric heat. This warranty does not cover lodging expenses or labor charges.  
Allied Air shall not be liable for any default or delay in performance under this warranty caused by any contingency beyond its control.  
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.  
NOTE TO CUSTOMER  
Please complete information below and retain this warranty for your records and future reference.  
Outside Unit Model Number: __________________________________________ Serial Number: ___________________________ Installed Date: ______________  
Furnace / Air Handler: _______________________________________________ Serial Number: ___________________________ Installed Date: ______________  
Indoor Coil Model Number: ___________________________________________ Serial Number: ___________________________ Installed Date: ______________  
Installing Company Name: _________________________________________________________________________ Phone: ______________________________  
Installing Company Address: ___________________________________________ State / Province: ________________________ Zip / Postal Code: ___________  
215 Metropolitan Drive, West Columbia, SC 29170  
506162-02  
Issue 0847  
Page 13 of 14  
 
NOTES  
506162-02  
Issue 0847  
Page 14 of 14  
 

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