Page 1
INSTALLATION INSTRUCTIONS
Split System Heat Pump & Air Conditioner
WARNING
These instructions are intended as an aid to qualified
licensed service personnel for proper installation, adjustment and operation of this unit. Read these instructions
thoroughly before attempting installation or operation.
Failure to follow these instructions may result in improper
installation, adjustment, service or maintenance possibly
resulting in fire, electrical shock, property damage,
personal injury or death.
RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION
DO NOT DESTROY THIS MANUAL
Please read carefully and keep in a safe place for future reference by a serviceman.
NOTE: Appearance of unit may vary.
16 SEER
Heating & Air Conditioning
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TABLE OF CONTENTS
1.0 SAFETY..................................................................................................................3
1.1 INSPECTION....................................................................................................4
1.2 LIMITATIONS....................................................................................................4
2.0 GENERAL..............................................................................................................4
3.0 UNIT INSTALLATION............................................................................................6
3.1 LOCATION.......................................................................................................6
3.2 GROUND INSTALLATION...............................................................................6
3.3 ROOF INSTALLATION.....................................................................................6
3.4 UNIT PLACEMENT..........................................................................................6
3.5 PRECAUTIONS DURING LINE INSTALLATION.............................................7
3.6 PRECAUTIONS DURING BRAZING OF LINES..............................................8
3.7 PRECAUTIONS DURING BRAZING SERVICE VALVE..................................9
3.8 UNIT MOUNTING...........................................................................................10
3.9 FACTORY-PREFERRED TIE-DOWN METHOD............................................11
3.10 REMOVING THE TOP PANEL AND MOTOR..............................................12
4.0 ELECTRICAL CONNECTIONS...........................................................................13
4.1 GENERAL INFORMATION & GROUNDING .................................................13
4.2 FIELD CONNECTIONS POWER WIRING ....................................................13
5.0 EVACUATION......................................................................................................14
6.0 INTERCONNECTING TUBING............................................................................14
6.1 VAPOR AND LIQUID LINES .........................................................................14
6.2 MAXIMUM LENGTH OF LINES ....................................................................14
6.3 VERTICAL SEPARATION .............................................................................14
7.0 SYSTEM OPERATION........................................................................................14
7.1 COMPRESSOR CRANKCASE HEATER (CCH)...........................................14
7.2 LINE SIZING..................................................................................................15
7.3 PROTECTION FUNCTION INTRODUCTION...............................................16
7.4 DEFROST MODE..........................................................................................16
7.5 MANUA
DEFROST MODE.............................................................................17
8.0 CHECKING REFRIGERANT CHARGE ..............................................................17
8.1 CHARGING BY LIQUID PRESSURE.............................................................17
8.2 CHARGING BY WEIGHT ..............................................................................18
8.3 FINAL LEAK TESTING ..................................................................................18
9.0 OWNER INSTRUCTIONS .........................……...................................................18
10.0 WIRING DIAGRAM............................................................................................19
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1.0 SAFETY
This is a safety alert symbol. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury.
Understand and pay particular attention to the signal words DANGER, WARNING, or
CAUTION.
DANGER indicates an imminently hazardous situation, which, if not avoided, will result
in death or serious injury.
WARNING indicates a potentially hazardous situation, which, if not avoided, could result
in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not avoided may result
in minor or moderate injury. It is also used to alert against unsafe practices and hazards
involving only property damage.
WARNING
Improper installation may create a condition where the operation of the product
could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or maintenance can cause
injury or property damage. Refer to this manual for assistance or for additional
information, consult a qualified contractor, installer or service agency.
This is an attention alert symbol. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury.
CAUTION
This product must be installed in strict compliance with the installation instructions and any applicable local, state, and national codes including, but not
limited to building, electrical, and mechanical codes.
This document is customer property and is to remain with this unit.
These instructions do not cover all the different variations of systems nor does
it provide for every possible contingency to be met in connection with installation.
All phases of this installation must comply with NATIONAL STATE AND LOCAL
CODES. If additional information is required please contact your local distributor.
3
WARNING
FIRE OR ELECTRICAL HAZARD
Failure to follow the safety warnings exactly could result in serious injury, death
or property damage.
A fire or electrical hazard may result causing property damage, personal injury
or loss of life.
Page 4
The outdoor units are designed to be connected to a matching indoor coil with sweat
connect lines. Sweat connect units are factory charged with refrigerant for a matching indoor coil plus 25 feet of field supplied lines.
Matching indoor coils are available with a thermostatic expansion valve or an orifice
for the most common usage. The orifice size and/or refrigerant charge may need to
be changed for some indoor-outdoor unit combinations, elevation differences or
total line lengths.
2.0 GENERAL
1.Limitations for the indoor unit, coil and appropriate accessories must also be observed.
2.The outdoor unit must not be installed with any duct work in the air stream. The outdoor fan is
the propeller type and is not designed to operate against any additional external static
pressure.
3.The maximum and minimum conditions for operation must be observed to assure a system
that will give maximum performance with minimum service.
4.This unit is not designed to operate with a low ambient kit. Do not modify the control system
to operate with any kind of Iow ambient kit.
5.The maximum allowable line length for this product is 150 feet Just for Scroll compressor .
1.2 LIMITATIONS
The unit should be installed in accordance with all National, State and Local Safety
Codes and the limitations listed below:
As soon as a unit is received, it should be inspected for possible damage during transit.
If damage is evident, the extent of the damage should be noted on the carrier's delivery
receipt. A separate request for inspection by the carrier's agent should be made in
writing. See Local distributor for more information.
1.1 INSPECTION
LARGE SERVICE VALVE
Fig.1 Underside Clapboard Location
4
Requirements For Installing/Servicing R410A Equipment
Gauge sets, hoses, refrigerant containers, and recovery system must be designed
to handle the POE or PVE type oils.
Manifold sets should be 800 PSIG high side and 250 PSIG low side with 550 PSIG
Iow side restart.
All hoses must have a 700 PSIG service pressure rating.
Leak detectors should be designed to detect refrigerant.
Recovery equipment (including refrigerant recovery containers) must be specifi cally designed to handle R410A.
Do not use an R-22 TXV.
It will be more convenient to open the Service valve after removing the Underside
Clpboard. see the Fig.1
Underside Clapboard
SMALL SERVICE VALVE
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5
FIG.2 DIMENSIONS
DIMENSIONAL DATA
"H" in. [mm]"W" in. [mm]
"L" in. [mm
]
Liqui
d in.
Vapor in.
18
24-15/16[633]
28[710]
28[710]
3/83/
4
24 29-1/8[740]
29-1/8[740]3/83/4
30 29-1/8[740]
29-1/8[740]3/83/4
36 29-1/8[740]29-1/8[740]
3/87/
8
42 29-1/8[740]
29-1/8[740]3/87/8
Model SIZE(Btu/h)
Dimensions (Inches)
Refrigerant Connection
Service Valve Size
24-15/16[633]
24-15/16[633]
33-3/16[843]
33-3/16[843]
AIR DISCHARGE: ALLOW 60”
MINIMUM CLEARANCE.
VAPOR LINE
CONNECTION
CONTROL WIRING
7/8” (22.2mm)
KNOCKOUT
1-11/32” (34.5mm)
LIQUID LINE
CONNECTION
SERVICE
FITTING
SERVICE
FITTING
POWER WIRING
SEE DETAIL A
DETAIL A
HOLE
1-3/32” (27.8mm)
SERVICE ACCESS
ALLOW 24” CLEARANCE
AIR INLETS
LOUVERED PANELS
ALLOW 18”
MINIMUM
CLEARANCE
NOTE: GRILL APPEARANCE
MAY VARY.
W
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3.0 UNIT INSTALLATION
3.1 LOCATION
Before starting the installation, select and check the suitability of the location for both
the indoor and outdoor unit. Observe all limitations and clearance requirements. The
outdoor unit must have sufficient clearance for air entrance to the condenser coil, for air
discharge and for service access. See Fig.2
NOTE
For multiple unit installations, units must be spaced a minimum of 18 inches
apart. (Coil face to coil face.)
If the unit is to be installed on a hot sun exposed roof or a black-topped ground area, the
unit should be raised sufficiently above the roof or ground to avoid taking the accumulated layer of hot air into the outdoor unit.
Provide an adequate structural support.
WARNING
The outdoor unit should not be installed in an area where mud or ice could cause
personal injury.
Elevate the unit sufficiently to prevent any blockage of the air entrances by snow in
areas where there will be snow accumulation. Check the local weather bureau for the
expected snow accumulation in your area. Isolate the unit from rain gutters to avoid any
possible wash out of the foundation.
When installing units on a roof, the structure must be capable of supporting the total
weight of the unit, including a padded frame unit, rails, etc., which should be used to
minimize the transmission of sound or vibration into the conditioned space.
3.3 ROOF INSTALLATION
3.4 UNIT PLACEMENT
1. Provide a base in the pre-determined location.
2. Remove the shipping carton and inspect for possible damage.
3. Compressor tie-down bolts should remain tightened.
4. Position the unit on the base provided.
The unit may be installed at ground level on a solid base that will not shift or settle, causing strain on the refrigerant lines and possible leaks. Maintain the clearances shown in
Fig.2 and install the unit in a level position.
3.2 GROUND INSTALLATION
Normal operating sound levels may be objectionable if the unit is placed directly under
windows of certain rooms (bedrooms, study, etc.).
Top of unit discharge area must be unrestricted for at least 60 inches above the unit.
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Page 7
1. Install the lines with as few bends as possible. Care must be taken not to damage
the couplings or kink the tubing. Use clean hard drawn Copper tubing where no
appreciable amount of bending around obstruction is necessary, if soft copper must
be used, care must be taken to avoid sharp bends which may cause a restriction.
2. The lines should be installed so that they will not obstruct service access to the coil,
air handling system or filter.
3.5 PRECAUTIONS DURING LINE INSTALLATION
CAUTION
This system uses R410A refrigerant which operates at higher pressure than
R-22. No other refrigerant may be used in this system. Gauge sets, hoses,
refrigerant containers, and recovery system must be designed to handle
R410A. If you are unsure, consult the equipment manufacturer.
The outdoor unit must be connected to the indoor coil using field supplied refrigerant
grade copper tubing that is internally clean and dry. Units should be installed only with
the tubing sizes for approved system combinations. The charge given is applicable for
total tubing lengths up to 25 feet.
NOTE
Using a larger than specified line size could result in oil return problems. Using
too small a line will result in loss of capacity and other problems caused by insufficient refrigerant flow. Slope horizontal vapor lines at least 1" every 20 feet
toward the outdoor unit to facilitate proper oil return.
3. Care must also be taken to isolate the refrigerant lines to minimize noise transmis sion from the equipment to the structure.
4. The vapor line and liquid line must be insulated with a minimum of 1/2" foam rubber
insulation (Armafiex or equivalent). Tape and suspend the refrigerant lines as shown.
DO NOT allow tube metal-to-metal contact. See Fig. 3.
5. Use PVC piping as a conduit for all underground installations as shown in Fig. 4.
Buried lines should be kept as short as possible to minimize the build up of liquid
refrigerant in the vapor line during long periods of shutdown.
6. Pack fiberglass insulation and a sealing material such as perma gum around refrig erant lines where they penetrate a wall to reduce vibration and to retain some flexi bility.
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Page 8
Insulated Liquid Line
Tape
Sheet Metal Hanger
CorrectIncorrect
Fig.5 Typical Installation
Fig.3 Tubing Hanger
Fig.4 Underground Installation
All outdoor unit and evaporator coil connections are copper-to-copper and should be
brazed with a phosphorous-copper alloy material such as Silfos-5 or equivalent. DO
NOT use soft solder. The outdoor units have reusable service valves on both the liquid
and vapor connections. The total system refrigerant charge is retained within the
outdoor unit during shipping and installation. The reusable service valves are provided
to evacuate and charge per this instruction.
Serious service problems can be avoided by taking adequate precautions to assure an
internally clean and dry system.
3.6 PRECAUTIONS DURING BRAZING OF LINES
8
Insulated Vapor Line
TO
INDOOR
BLOWER
TO
POWER
SUPPLY
TO
COIL
WEATHERPROOF
DISCONNECT
SWITCH
Seal opening(s) with
permagumor equivalent
NOTE:All outdoor wiring must be weather proof
Page 9
CAUTION
Dry nitrogen should always be supplied through the tubing while it is being
brazed, because the temperature required is high enough to cause oxidation
of the copper unless an inert atmosphere is provide. The flow of dry nitrogen
should continue until the joint has cooled. Always use a pressure regulator
and safety valve to insure that only low pressure dry nitrogen is introduced into
the tubing.Only a small flow is necessary to displace air and prevent oxidation.
Precautions should be taken to prevent heat damage to service valve by wrapping a wet
rag around it as shown in Fig. 6. Also, protect all painted surfaces, insulation, during
brazing. After brazing cool joint with wet rag.
3.7 PRECAUTIONS DURING BRAZING SERVICE VALVE
Valve can be opened by removing the plunger cap and fully inserting a hex wrench into
the stem and backing out counter-clockwise until valve stem just touches the chamfered retaining wall.
1. Remove the cap and Schrader core from both the liquid and vapor service valve
service ports at the outdoor unit. Connect Iow pressure nitrogen to the liquid line
service port.
Connect the refrigerant lines using the following procedure:
2. Braze the liquid line to the liquid valve at the outdoor unit. Be sure to wrap the valve
body with a wet rag. Allow the nitrogen to continue flowing. Refer to the Tabular Data
Sheet for proper liquid line sizing.
3. Carefully remove the rubber plugs from the evaporator liquid and vapor connections
at the indoor coil.
4. Braze the liquid line to the evaporator liquid connection. Nitrogen should be flowing
through the evaporator coil.
5. Slide the plastic cap away from the vapor connection at the indoor coil. Braze the
vapor line to the evaporator vapor connection. Refer to the Table 1 for proper vapor
line sizing.
6. Protect the vapor valve with a wet rag and braze the vapor line connection to the
outdoor unit. The nitrogen flow should be exiting the system from the vapor service
port connection. After this connection has cooled, remove the nitrogen source from
the liquid fitting service port.
7. Replace the Schrader core in the liquid and vapor valves.
8. Leak test all refrigerant piping connections including the service port flare caps to be
sure they are leak tight. DO NOT OVER TIGHTEN (between 40 and 60 inch -lbs.
maximum).
9. Evacuate the vapor line, evaporator and the liquid line, to 500 microns or less.
9
Fig.6 Heat Protection
service valve
wet rag
Page 10
10. Replace cap on service ports. Do not remove the flare caps from the service ports
except when necessary for servicing the system.
CAUTION
Do not connect manifold gauges unless trouble is suspected. Approximately 3/4
ounce of refrigerant will be lost each time a standard manifold gauge is
connected.
11. Release the refrigerant charge into the system. Open both the liquid and vapor
valves by removing the plunger cap and with an hex wrench back out counter
-clockwise until valve stem just touches the chamfered retaining wall.
12. Replace plunger cap finger tight, then tighten an additional 1/12 turn (1/2 hex flat).
Cap must be replaced to prevent leaks.
Table 1: Refrigerant Connections and Recommended Liquid and Vapor Tube
Diameters (ln.)
WARNING
Never attempt to repair any brazed connections while the system is under pressure. Personal injury could result.
See "System Charge" section for checking and recording system charge.
10
3.8 UNIT MOUNTING
2. If elevating a unit on a flat roof , use 4”× 4”(or equivalent) stringers
positioned to distribute unit weight evenly and prevent noise and vibration
(See fig. 7) .
NOTE:Do not block drain openings shown in fig.7.
3. If unit must be elevated because of anticipated snow fall, secure unit and
elevating stand such that unit and/or stand will not tip over or fall off.
If elevating the heat pump, either on a flat roof or on a slab, observe the following guidelines.
1.The base pan provided elevates the heat pump 2” above the base pad.
NOTE: To tie down unit, see 3.9.
MODEL SIZE
LIQUID
SUCTION
Tube Diameter
Tube Diameter
18
3/8
3/4
24
3/8
3/4
30
3/8
3/4
36
3/8
3/4
42
3/8
48
3/8
60
3/8
7/8
3/4
7/8
Page 11
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3.9 FACTORY-PREFERRED TIE-DOWN METHOD
Step 3: Using L-shaped bracket to locate holes on concrete and drill pilot holes which is
at least 1/4” deeper than fastener being used.
IMPORTANT
Self drilling screws to base pan should not exceed 3/8” long to avoid damaging
coil.
Step 4: Using conventional practices to install brackets, tighten concrete fasteners and
self-tapping screws (See Fig.8).
NOTE: 1. One bracket for each side. For extra stability, 2 brackets for each side.
2. Do not over-tighten the concrete fastener to avoid weakening the concrete.
Step 1: Prior to installing clear pad of debris.
IMPORTANT
Then cement pad must be made of HVAC-approved materials and must be the
proper thickness to accommodate fasteners.
Step 2: Center and level unit onto pad.
Fig.7 RECOMMENDED ELEVATED INSTALLATION
ELEVATION ABOVE ANTICIPATED
SNOW IS NECESSARY
BASE PAD
(CONCRETE OR
OTHER SUITABLE
MATERIAL)
BASE PAN (BOTTOM VIEW) DO NOT
OBSTRUCT DRAIN HOLES
(SHADED)
IMPORTANT NOTE:
These instructions are intended to provide a method to tie-down system to cement slab
as a securing procedure for high wind areas. It is recommended to check Local Codes
for tie-down methods and protocols.
Page 12
12
1/2” bolt
5/16” bolts
Fig. 9 COVER AND FAN
3.10 REMOVING THE TOP PANEL AND MOTOR
When motor requires changing follow the steps below:
Step 1: Go into electrical panel, disconnect motor power lines.
IMPORTANT NOTE
Disconnect main power to unit. Severe burns and electrical shock will occur if
you do not disconnect main power.
Step 2: Remove cover (be careful of motor wires)
Step 3: Be sure to place fan cover unit on the ground as indicated in Fig. 9
IMPROTANT NOTE
Do not place or lean fan blades on ground or against surface.
Step 4: Remove fan motor by removing 5/16” bolts from cover.
Step 5: Remove fan blade from motor by removing 1/2” bolt and place fan on the ground.
Step 6: Reverse removal process to reinstall the fan and motor.
IMPROTANT NOTE
When connecting motor wires be sure to check motor direction.
Damage will occur to condenser unit
if you remove fan bolts prior to cover removal.
NOTE:
REQUIRED PARTS LIST
SEE DETAIL B
#7 X 3/8” Self Tapping Screws
(Don’t Exceed 3/8” long)
1/4” Χ 1-1/2” Hex Washer Head Concrete Screws
(3/16” Pilot Hole Needed. Pilot Hole Should Be1/4” Deeper
Than The Fastener Embedment)
Fig.8 FACTORY-PREFERRED TIE-DOWN METHOD
DETAIL B
Brackets:
2” width, 1/16” thickness,
height as required.
Available from distributor
or in market place.
The dimension see FIG.2
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4.1 GENERAL INFORMATION & GROUNDING
Check the electrical supply to be sure that it meets the values specified on the unit
nameplate and wiring label.
Power wiring, control (Iow voltage) wiring, disconnect switches and over current
protection must be supplied by the installer. Wire size should be sized per requirements.
CAUTION
All field wiring must USE COPPER CONDUCTORS ONLY and be in accordance
with Local, National Fire, Safety & Electrical Codes. This unit must be grounded
with a separate ground wire in accordance with the above codes.
The complete connection diagram and schematic wiring label is located on the inside
surface of the unit service access panel and this instruction.
1. Install the proper size weatherproof disconnect switch outdoors and within sight of
the unit.
2. Remove the screws at the side of the corner panel. Slide corner panel down and
remove from unit. See Fig. 10.
3. Run power wiring from the disconnect switch to the unit.
4. Route wires from disconnect through power wiring opening provided and into the
unit control box.
5. Install the proper size time-delay fuses or circuit breaker, and make the power
supply connections.
6. Energize the crankcase heater if equipped to save time by preheating the compres sor oil while the remaining installation is completed.
4.2 FIELD CONNECTIONS POWER WIRING
4.0 ELECTRICAL CONNECTIONS
13
NOTE: When changing the motor, remove top cover first.
Fig.10 Typical Field Wiring
POWER
WIRING
CORNER
PANEL
CONTROL
WIRING
Page 14
It will be necessary to evacuate the system to 500 microns or less. If a leak is
suspected, leak test with dry nitrogen to locate the leak. Repair the leak and test again.
To verify that the system has no leaks, simply close the valve to the vacuum pump
suction to isolate the pump and hold the system under vacuum. Watch the micron
gauge for a few minutes. If the micron gauge indicates a steady and continuous rise,
it's an indication of a leak. If the gauge shows a rise, then levels off after a few minutes
and remains fairly constant, its an indication that the system is leak free but still
contains moisture and may require further evacuation if the reading is above 500
microns.
5.0 EVACUATION
7.0 SYSTEM OPERATION
7.1 COMPRESSOR CRANKCASE HEATER (CCH HEAT BUMP ONLY)
Refrigerant migration during the off cycle can result in a noisy start up. Add a crankcase heater to minimize refrigeration migration, and to help eliminate any start up
noise or bearing “wash out”.
All heaters are located on the lower half of the compressor shell. Its purpose is to drive
refrigerant from the compressor shell during long off cycles, thus preventing damage
to the compressor during start-up.
At initial start-up or after extended shutdown periods, make sure the heater is energized for at least 12 hours before the compressor is started. (Disconnect switch on and
wall thermostat off.)
14
6.0 INTERCONNECTING TUBING
6.1 VAPOR AND LIQUID LINES
Keep all lines sealed until connection is made.
Make connections at the indoor coil first.
Refer to Line Size Information in Tables 2 and 3 for correct size and multipliers to be
used to determine capacity for various vapor line diameters and lengths of run. The
losses due to the lines being exposed to outdoor conditions are not included.
1/4” ± .3 oz. per foot
5/16” ± .4 oz. per foot
3/8” ± .6 oz. per foot
1/2” ± 1.2 oz. per foot
6.2 MAXIMUM LENGTH OF LINES
The maximum length of interconnecting line is 150 feet.
Always use the shortest length possible with a minimum number of bends. Additional
compressor oil is not required for any length up to 150 feet.
NOTE: Excessively long refrigerant lines cause loss of equipment capacity.
6.3 VERTICAL SEPARATION
Keep the vertical separation to a minimum. Use the following g
uidelines when
installing the unit:
1. DO NOT exceed the vertical separations as indicated on Table 3.
2. It is recommended to use the smallest liquid line size permitted to minimize sys tem charge which will maximize compressor reliability.
3. Table 3
may be used for sizing horizontal runs.
The factory refrigerant charge in the outdoor unit is sufficient for the unit and 25 feet
of standard size interconnecting liquid and vapor lines. For different lengths,adjust
the charge as indicated below.
Page 15
15
TABLE 2: SUCTION LINE LENGTH/SIZE VS CAPACITY MULTIPLIER(R410A)
TABLE 3 :LIQUID LINE SIZE (R-410A)
1 1/2 Ton2 Ton2 1/2 Ton3 Ton3 1/2 Ton
3/4" I.D.3/4" I.D.3/4" I.D.7/8" I.D.7/8" I.D.
5/8 Opt.5/8 Opt.5/8 Opt.3/4 Opt.3/4 Opt.
3/4* Std.3/4* Std.3/4* Std.7/8* Std.7/8* Std.
Optional1.001.001.001.001.00
Standard1.001.001.001.001.00
Optional0.970.970.970.980.98
Standard0.980.980.980.990.98
Optional0.940.940.940.960.95
Standard0.950.950.960.970.97
Optional0.900.900.900.940.91
Standard0.920.920.930.950.96
Suction Line Connection Size
System Capacity
Suction Line Run Feet
NOTES:
* Standard size
Using suction line larger than shown in chart will result in poor oil return and is not recommended.
150'
25'
50'
100'
255075100125150
1/42540259N/AN/A
5/16255062585349
3/8*255075727068
1/423N/AN/AN/AN/AN/A
5/1625362923169
3/8*255072706865
1/425N/AN/AN/AN/AN/A
5/1625493827176
3/8*255068656258
5/16255037227N/A
3/8*255068635853
5/1625234N/AN/AN/A
3/8*255043363024
Liquid Line Size
Outdoor unit above or below indoor coil
3 Ton
Total Equivalent Length - Feet
System
Capacity
Line Size
Connection And
Line Size
(Inch I.D.)
Maximum Vertical Separation - Feet
Line Size
Connection Size
(Inch I.D.)
Compress
or
Type
Scroll
Scroll
Scroll
1 1/2 Ton3/8"
2 Ton3/8"
3/8"2 1/2 Ton
NOTES:
* Standard line size
N/A Application not recommended.
Scroll
Scroll3 1/2 Ton
3/8"
3/8"
7.2 LINE SIZING
Page 16
16
7.3 PROTECTION FUNCTION INTRODUCTION (Heat pump only)
Sensor T3 (condenser pipe temperature) and T4 (outdoor ambient temperature)
When open-circuit, compressor, outdoor fan motor and reverse valve will be OFF.
Discharge temperature protection
When discharge temp. is > 275 °F, the compressor will stop.
When discharge temp. is < 194 °F, the compressor will restart.
High perssure protection
When high pressure is > 638 PSIG, the compressor and the outdoor fan motor will stop.
When high pressure is < 464 PSIG, the compressor and the
outdoor fan motor will restart
(3 minutes delay necessary).
Low pressure protection
Low pressure is < 21 PSIG, the compressor and the outdoor fan motor will stop.
Low pressure is > 44 PSIG, the compressor and the outdoor fan motor will restart
(3 minutes delay necessary).
In stand-by status, the compressor will not start in low pressure protection.
Within 30 mins, if 4 protection cycles occurs, system will restore after power cut-down.
When T4 is < 5 °F, the compressor will stop. If the electrical heater kit is installed in
the indoor unit, the outdoor unit would provide a signal to drive up the heater.
When T4 is > 10.4 °F, the compressor will restart.
Error code table for the indicating light:
STEADY ON = NORMAL OPERATIONSTEADY ON = NORMAL OPERATION
OFF = DFC FAILURE OFF = DFC FAILURE
1 FLASH = T3 SENSOR FAILURE1 FLASH = T3 SENSOR FAILURE
2 FLASH = T4 SENSOR FAILURE / HPC OR HGS OPEN2 FLASH = T4 SENSOR FAILURE / HPC OR HGS OPEN
1
2
0
3 FLASH = LPC OPEN3 FLASH = LPC OPEN
3
When JUMP switch is set to “0”:
Compressor keeps running, when T3 is < 32 °F and last for 30 minutes.
7.4 DEFROST MODE* (For HP system only)
Defrosting condition:
When JUMP switch is set to “1”, the defrost mode will start if one of following
conditions is satisfied:
1. Compressor keeps running, when T4 is > 28.4 °F and T3 is < 32 °F and last
for 40 minutes;
2. Compressor keeps running, when T4 is < 28.4 °F and T3 is < 32 °F and last
for 50 minutes.
* When defrosting actions, if the electrical heater kit is installed, the unit would deliver the Aux. heater
operation signal to the electrical heater kit.
Page 17
Charge for all systems should be checked against the Charging Chart inside the
access panel cover.
IMPORTANT:Do not operate the compressor without charge in system. Addition of
R-410A will raise pressures (vapor, liquid and discharge).
If adding R-410A raises both vapor pressure and temperature, the unit is overcharged.
IMPORTANT: Use industry-approved charging methods to ensure proper system
charge.
8.1 CHARGING BY LIQUID PRESSURE
The liquid pressure method is used for charging systems in the cooling and heating
mode. The service port on the liquid (small valve) and suction (large valve) is used
for this purpose.
Verify that the outdoor unit is running and the indoor air mover is delivering the
maximum airflow for this system size. Read and record the outdoor ambient temperature. Read and record the liquid and suction pressures at the ports on the liquid
and suction valves.
8.0 CHECKING REFRIGERANT CHARGE
17
7.5 MANUAL DEFROST MODE (For HP system only)
When MANUAL DEFROST switch in PCB is set to “1”, system will perform as
above 7.4 description.
When the switch is set to “0”, T3 32°F, compressor keeps running and lasting
for 40 seconds, the system turns to the Defrost Mode. By the logic of 7.4 to
exit the Defrost Mode.
Caution: Once finishes the manual defrost, please switch the MANUAL
DEFROST in PCB to “1”.
Fig.11 Switch location in the PCB board
JUMP
MANUAL
DEFROST
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18
8.2 CHARGING BY WEIGHT
For a new installation, evacuation of interconnecting tubing and indoor coil is
adequate; otherwise, evacuate the entire system. Note that charge value includes
charge required for 25 ft. of standard size interconnecting liquid line. Calculate actual
With an accurate scale (+/-1 oz.) or volumetric charging device, adjust charge
difference between that shown on the unit data plate and that calculated for the new
system Installation. if the entire system has been evacuated, add the total calculated
charge.
8.3 FINAL LEAK TESTING
After the unit has been properly evacuated and charged, a halogen leak detector
should be used to detect leaks in the system. All piping within the condensing unit,
evaporator, and interconnecting tubing should be checked for leaks. If a leak is
detected, the refrigerant should be recovered before repairing the leak. The Clean Air
Act prohibits releasing refrigerant into the atmosphere.
If refrigerant lines are sized using the nameplate charge, the correct liquid pressure is
found at the intersection of the suction pressure and the outdoor ambient.
1. Remove refrigerant charge if the liquid pressure is above the chart value.
2. Add refrigerant charge if the liquid pressure is below the chart value.
9.0 OWNER INSTRUCTIONS
9.1 MAINTENANCE
. Dirt should not be allowed to accumulate on the outdoor coils or other parts in the air
circuit. Clean as often as necessary to keep the unit clean. Use a brush, vacuum
cleaner attachment, or other suitable means.
2.
The outdoor fan motor is permanently lubricated and does not require periodic oiling.
3. If the coil needs to be cleaned, it should be washed with Calgon Coilclean (mix one
part Coilclean to seven parts water). Allow solution to remain on coil for 30 minutes
before rinsing with clean water. Solution should not be permitted to come in contact
with painted surfaces.
4.
Refer to the furnace or air handler instructions for filter and blower motor maintenance.
5. The indoor coil and drain pan should be inspected and cleaned regularly to assure
proper drainage.
CAUTION
It is unlawful to knowingly vent, release or discharge refrigerant into the open air
during repair, service, maintenance or the final disposal of this unit. When the
system is functioning properly and the owner has been fully instructed, secure the
owner’s approval.
Assist owner with processing Warranty cards and/or online registration. Review Owners
Guide and provide a copy to the ower and guidance on proper operation and main-
teance. Instruct the owner or the operator how to start, stop and adjust temperature
setting. The installer should instruct the owner on proper operation and maintenance of
all other system components.
1.
charge required with installed liquid line size and length, please see 6.1 of table of
contents.
Page 19
19
10.0 WIRING DIAGRAM
CAUTION
These units must be wired and installed in accordance with all National and
Local Safety Codes.
Fig.12 Outdoor Unit Wiring Diagram for A/C Systems(208/230V 1P 60Hz).
CCCOMPRESSORCONTACTOR
RC1RUNCAPACITOR1
RC2RUNCAPACITOR2
COMPCOMPRESSOR
LINEVOLTAGE
FACTORYSTANDARD
FIELDINSTALLED
OPTIONAL
LOW
FACTORY
VOLTAGE
FACTORYSTANDARD
FIELDINSTALLED
FACTORYOPTIONAL
USECOPPERCONDUCTORSONLY
WARNING:
CABINETMUSTBEPERMANMENTLY GROUNDED
ANDALLWIRINGTOCONFORMTO I.E.C, N.E.C,
C.E.C, C.L.C, ANDLOCALCODESAS APPLICABLE
REPLACEMENTWIREMUSTBETHESAMEGAUGE
AND INSULATIONTYPEASORIGINALWIRE.
ORANGE
A2
A1
T1
L1
BLACK
YELLOW
C
Y
RC1
L1L2
CC
L1
L2
GND
THERMOSTAT
C
Y
R
G
INDOOR UNIT
OUTDOOR UNIT
G
C
Y
R
C
Fig.13 Control Wiring for A/C Systems.
Suggestion: When choosing a thermostat, choose KJR-25B or a non-programmable
electric thermostat series . Please refer to thermostat electrical manual for wiring
schematic.
Terminal Block
Page 20
20
1
2
0
3
Fig.14 Outdoor Unit Wiring Diagram for H/P Systems(208/230V 1P 60Hz).
THERMOSTAT
C
INDOOR UNITOUTDOOR UNIT
Y
R
G
RY
G
C
C
B
R
B
Fig.15 Control Wiring for H/P Systems.
W2
D
w1
Suggestion: When choosing a thermostat, choose KJR-25B or a non-programmable electric
thermostat. Broken lines means H/P system with electric heating. Please refer to thermostat
electrical manual for wiring schematic.
Terminal Block
Page 21
21
TABLE 4: Electrical Data:
ModelMin. Circuit Ampacity(A)Maximum Circuit Protector(A)
18AC
12.3
20
24AC
17.9
30
30AC
18.7
30
36AC21.935
42AC
23.4
40
18HP
12.3
20
24HP
17.9
30
30HP
18.7
30
36HP
21.9
35
42HP
23.440
NOTES:
AC:Air Conditioner; HP:Heat Pump
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