Amana ASZC180361A, ASZC180481A, ASZC180601B Installation Manual

CONDENSING UNIT

HEAT PUMP
INSTALLATION & SERVICE REFERENCE

I

MPORTANT SAFETY INSTRUCTIONS

© 2009-2014, 2016 Goodman Manufacturing Company , L.P .
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-348N Date: July 2016

The following symbols and labels are used throughout this manual
to indicate immediate or potential safety hazards. It is the
owner’s and installer’s responsibility to read and comply with all
safety information and instructions accompanying these sym­bols. Failure to heed safety information increases the risk of
personal injury , property damage, and/or product damage.

S

HIPPING INSPECTION

HIGH VOLTAGE!

D

ISCONNECT

ULTIPLE POWER SOURCES MAY BE PRESENT

M

TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL

INJURY OR DEATH

ALL

POWER BEFORE SERVICING

.

WARNING

.

. F

AILURE

Always keep the unit upright; laying the unit on its side or top
may cause equipment damage. Shipping damage, and subse­quent investigation is the responsibility of the carrier. Verify
the model number, specifications, electrical characteristics,
and accessories are correct prior to installation. The distribu­tor or manufacturer will not accept claims from dealers for trans­portation damage or installation of incorrectly shipped units.

C

ODES

& R

EGULATIONS

This product is designed and manufactured to comply with
national codes. Installation in accordance with such codes and/
or prevailing local codes/regulations is the responsibility of the
installer. The manufacturer assumes no responsibility for equip­ment installed in violation of any codes or regulations. Rated

O

NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE OR

REPAIR (HEREINAFTER

SHOULD SERVICE THE EQUIPMENT

FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVI CE OR

SERVICE PROCEDURES

FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY RESULT

JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES TO SERVICE THE EQUIPMENT

SPECIFIED IN THIS MANUAL, ONLY LICENSED PERSONNEL SHOULD SERVICE THE

EQUIPMENT

THE EQUIPMENT SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL, ADJUST

SERVICE OR REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER

TRAINING MAY RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL

INJURY OR DEATH

, “

SERVICE

”)

THE EQUIPMENT SPECIFIED IN THIS MANUAL

. THE

MANUFACTURER WILL NOT BE RESPONSIBLE

. IF

YOU SERVICE THIS UNIT, YOU ASSUME RESPONSIBILITY

. IN

ADDITION, IN

. I

MPROPER INSTALLATION, ADJUSTMENT, SERVICING OR REPAIR OF

.

,

performance is achieved after 72 hours of operation. Rated per­formance is delivered at the specified airflow. See out door unit
specification sheet for split system models or product speci­fication sheet for packaged and light commercial models.
Specification sheet s can be found at www.goodmanmfg.com
for Goodman® brand products or www.amana-hac.com for
Amana® brand products. Within either website, please select

S

CROLL EQUIPPED UNITS SHOULD NEVER BE USED TO EVACUATE THE AIR

CONDITIONING SYSTEM

ELECTRICAL ARCING RESULTING IN A DAMAGED OR FAILED

COMPRE SSOR

.

. V

CAUTION

ACUUM S THIS LOW CAN CAUSE INTERNAL

the residential or commercial products menu and then select
the submenu for the type of product to be installed, such as
air conditioners or heat pumps, to access a list of product pages that each contain links to that model’s specification sheet.

“IMPORTANT – This product has been designed and manufactured to meet
ENERGY STAR criteria for energy efficiency when matched with appropriate
coil components. However, proper refrigerant charge and proper air flow
are critical to achieve rated capacity and efficiency. Installation of this
product should follow the manufacturer’s refrigerant charging and air
flow instructions. Failure to confirm proper charge and airflow may reduce
energy efficiency and shorten equipment life.”

is a registered trademark of Maytag Corporation or its related companies and is used under

license to Goodman Company, L.P., Houston, TX. All rights reserved.

The United States Environmental Protection Agency (EPA) has issued various regulations regarding the introduction
and disposal of refrigerants. Failure to follow these regulations may harm the environment and can lead to the
imposition of substantial fines. Should you have any questions please contact the local office of the EPA.

If replacing a condensing unit or air handler, the system must be manufacturer approved and Air Conditioning, Heating and
Refrigeration Institute (AHRI) matched. NOTE: Installation of unmatched systems is strongly discouraged.

Outdoor units are approved for operation above 55°F in cooling mode. Operation below 55°F in cooling mode requires the use
of an approved low ambient kit.

Damage to the unit caused by operating the unit in a structure that is not complete (either as part of new construction or
renovation) is not covered by the warranty.

F

EATURES

This heat pump is a part of the ComfortNet™ family of products. It may be installed as part of a “legacy” system using a
standard 24 VAC thermostat. However, with the CTK0* ComfortNet™ thermostat kit, this heat pump may be installed as part of
a digitally communicating system. The ComfortNet system provides enhanced setup features, and enhanced diagnostics. It
also reduces the number of thermostat wires to a maximum of four
and a minimum of two.

I

NSTALLATION CLEARANCES

Special consideration must be given to location of the condensing
unit(s) in regard to structures, obstructions, other units, and any/
all other factors that may interfere with air circulation. Where pos­sible, the top of the unit should be completely unobstructed; how-

NOT

RECOMMENDED

OK!

B

OK!

ever, if vertical conditions require placement beneath an obstruc­tion there should be a minimum of 60 inches between the top

B B B

of the unit and the obstruction(s). The specified dimensions

meet requirements for air circulation only. Consult all appropriate

AA AAA

regulatory codes prior to determining final clearances.

Another important consideration in selecting a location for the unit(s)
is the angle to obstructions. Either side adjacent the valves can be
placed toward the structure provided the side away from the struc-

AA

C

AA

C

AA

OK!

OK!

OK!

OK!

ture maintains minimum service clearance. Corner installations
are strongly discouraged.

A

AA

AA

CC

This unit can be located at ground floor level or on flat roofs. At
ground floor level, the unit must be on a solid, level foundation
that will not shift or settle. To reduce the possibility of sound
transmission, the foundation slab should not be in contact with
or be an integral part of the building foundation. Ensure the foun­dation is sufficient to support the unit. A concrete slab raised

Model Type A B C AA
Residential

Light Commercial

Minimum Airflow Clearance

10" 10" 18" 20"
12" 12" 18" 24"

above ground level provides a suitable base.

R

OOFTOP INSTALLATIONS

If it is necessary to install this unit on a roof structure, ensure the roof structure can support the weight and that proper
consideration is given to the weather-tight integrity of the roof. Since the unit can vibrate during operation, sound vibration
transmission should be considered when installing the unit. Vibration absorbing pads or springs can be installed between the
condensing unit legs or frame and the roof mounting assembly to reduce noise vibration.

NOTE: These units require special location consideration in areas of heavy snow accumulation and/or areas with prolonged
continuous subfreezing temperatures. Heat pump unit bases have cutouts under the outdoor coil that permit drainage of frost
accumulation. Situate the unit to permit free unobstructed drainage
of the defrost water and ice. A minimum 3” clearance under the
outdoor coil is required in the milder climates.

Design Temperature Suggested Minimum Elevation

+15° and above 2 1/2"

-5° to +14° 8"
below -5° 12"

2

WARNING

R

EFRIGERANTS ARE HEAVIER THAN AIR

OXYGEN IN YOUR LUNGS OR IN ANY ENCLOSED SPACE

POSSIBLE DIFFICULTY IN BREATHING OR DEATH

EVER PURGE REFRIGE RANT INTO AN ENCLOSED ROOM OR SPACE

• N

LAW, ALL REFRIGE RANTS MUST BE RECLAIMED

F AN INDOOR LEAK IS SUSPECTED, THOROUGHLY VENTILATE THE AREA

• I

BEFORE BEGINNING WORK

IQUID REFRIGERANT CAN BE VERY COLD

• L

OR BLINDNESS, AVOID CONTACT AND WEAR GLOVES AND GOGGLES

LIQUID REFRIGERANT DOES CONTACT YOUR SKIN OR EYES, SEEK MEDICAL

HELP IMMEDIATELY

LWAYS FOLLOW

• A

OISONOUS GAS WILL BE PRODUCED

P

EPA

.

.

REGULATIONS

. T

HEY CAN “PUSH OUT” THE

. TO

AVOID

:

.

. TO

AVOID POSSIBLE FROST BITE

. N

EVER BURN REFRIGE RANT, AS

.

. BY

. IF

In more severe weather locations, it is recommended that the
unit be elevated to allow unobstructed drainage and air flow.
The elevation minimums at right are recommended:

S

AFE REFRIGERANT HANDLING

While these items will not cover every conceivable situation,
they should serve as a useful guide.

R

EFRIGERANT LINES

WARNING

TO

AVOID POSSIBLE EXPLOSION

• N

EVER APPLY FLAME OR STEAM TO A REFRIGERANT CYLINDER

MUST HEAT A CYLINDER FOR FASTER CHARGING, PARTIALLY IMMERSE IT

IN WARM WATER

EVER FILL A CYLINDER MORE THAN

• N

EVER ADD ANYTHING OTHER THAN

• N

TO AN

410A

BE LISTED OR CERTIFIED FOR THE TYPE OF REFRIGERANT USED

TORE CYLINDERS IN A COOL, DRY PLACE

• S

LATFORM OR A ROLLER

P

.

R-410A

CYLINDER

.

:

80%

FULL OF LIQUID REFRIGERANT

R-22 TO AN R-22

. THE

SERVICE EQUIPMENT USED MUST

. N

EVER USE A CYLINDER AS A

. IF

YOU

CYLINDER OR

.

R-

W ARNING

TO

AVOID POSSIBLE INJURY, EXPLOSION OR DEATH, PRACTICE SAFE

HANDLING OF REFRIGERANTS

.

W ARNING

TO

AVOID POSSIBLE EXPLOSION, USE ONLY RETURNA BLE (NOT

DISPOSABLE) SERVICE CYLINDERS WHEN REMOVING REFRIGERANT FROM

A SYSTEM

• E

• E

• E
W

.

NSURE THE CYLINDER IS FREE OF DAMAGE WHICH COULD LEAD TO A

LEAK OR EXPLOSION

NSURE THE HYDROSTATIC TEST DATE DOES NOT EXCEED

NSURE THE PRESSURE RATIN G MEETS OR EXCEEDS

HEN IN DOUBT, DO NOT USE CYLINDER

.

400

.

5

PSIG

YEARS

.

.

.

Use only refrigerant grade (dehydrated and sealed) copper tub­ing to connect the condensing unit with the indoor evaporator.
After cutting the tubing, install plugs to keep refrigerant tubing
clean and dry prior to and during installation. Tubing should
always be cut square keeping ends round and free from burrs.
Clean the tubing to prevent contamination.

Do NOT let refrigerant lines come in direct contact with plumb­ing, ductwork, floor joists, wall studs, floors, and walls. When
running refrigerant lines through a foundation or wall, openings
should allow for sound and vibration absorbing material to be
placed or installed between tubing and foundation. Any gap
between foundation or wall and refrigerant lines should be filled
with a pliable silicon-based caulk, RTV or a vibration damping
material. A void suspending refrigerant tubing from joist s and
studs with rigid wire or straps that would come in contact with
the tubing. Use an insulated or suspension type hanger. Keep
both lines separate and always insulate the suction line.

These sizes are suitable for line lengths of 79 feet or less. If a
run of more than eighty feet is required, refer to Remote Cool­ing Service Manual, or TP-106 Long Line Set Application R-22,
or TP-107 Long Line Set Application R-410A or contact your
distributor for assistance.

CAUTION

THE

COMPRESSOR

SUSCEPTIBLE TO MOISTURE ABSORPTION AND COULD CAUS E

COMPRE SSOR FAILURE

ANY LONGER THAN NECESSARY FOR INSTALLATION

POE

OIL FOR

R-410A

. DO

NOT LEAVE SYSTEM OPEN TO ATMOSPHERE

UNITS IS EXTREMELY

.

RECOMMENDED INTERCONNECTING TUBING (Ft)

Cond

Unit

0-24 25-49 50-79*

Line Di ameter ( In. OD)

Tons Suct Liq Suct Liq Suct Liq

1 1/2 5/8 1/4 3/4 3/8 3/4 3 / 8

2 5/8 1/4 3/4 3/8 3/4 3/8

2 1/2 5/8 1/4 3/4 3/8 7/8 3 / 8

3 3/4 3/8 7/8 3/8 1 1/8 3/8

3 1/2 7/8 3/8 1 1/8 3/8 1 1/8 3/8

4 7/8 3/8 1 1/8 3/8 1 1/8 3/8
5 7/8 3/8 1 1/8 3/8 1 1/8 3/8

* Lines greater than 79 feet in length or vertical elevation
changes more than 50 feet

Service Manual or contact your distributor for assist ance.

refer to the R emote Cooling

Insulation is necessary to prevent condensation from forming
and dropping from the suction line. Armaflex (or satisfactory equivalent) with 3/8” min. wall thickness is recommended. In
severe conditions (hot, high humidity areas) 1/2” insulation may be required. Insulation must be installed in a manner which
protects tubing from damage and contamination.

3

Where possible, drain as much residual compressor oil from ex­isting systems, lines, and traps; pay close attention to low areas
where oil may collect. NOTE: If changing refrigerant types, en­sure the indoor coil and metering device is compatible with the
type of refrigerant being used: otherwise, the indoor coil must be
replaced.

B

URYING REFRIGERANT LINES

If burying refrigerant lines can not be avoided, use the following
checklist.

1. Insulate liquid and suction lines separately .

2. Enclose all underground portions of the refrigerant lines in
waterproof material (conduit or pipe) sealing the ends where
tubing enters/exits the enclosure.

3. If the lines must pass under or through a concrete slab, ensure
lines are adequately protected and sealed.

R

EFRIGERANT LINE CONNECTIONS

IMPORTANT

T o avoid overheating the service valve, TXV valve, or filter
drier while brazing, wrap the component with a wet rag,
or use a thermal heat trap compound. Be sure to follow
the manufacturer’s instruction when using the heat trap compound. Note: Remove Schrader valves from service
valves before brazing tubes to the valves. Use a brazing alloy of 2% minimum silver content. Do not use flux.

T orch heat required to braze tubes of various sizes is proportional to the size of the tube. Tubes of smaller size
require less heat to bring the tube to brazing temperature before adding brazing alloy . Applying too much heat
to any tube can melt the tube. Service personnel must use the appropriate heat level for the size of the tube
being brazed. NOTE: The use of a heat shield when brazing is recommended to avoid burning the serial plate
or the finish on the unit.

1. The ends of the refrigerant lines must be cut square, deburred, cleaned, and be round and free from nicks or dents. Any
other condition increases the chance of a refrigerant leak.

2. “Sweep” the refrigerant line with nitrogen or inert gas during brazing to prevent the formation of copper-oxide inside the
refrigerant lines. The POE oils used in R-410A applications will clean any copper-oxide present from the inside of the
refrigerant lines and spread it throughout the system. This may cause a blockage or failure of the metering device.

3. After brazing, quench the joints with water or a wet cloth to prevent overheating of the service valve.

4. Ensure the filter drier paint finish is intact after brazing. If the paint of the steel filter drier has been burned or chipped,
repaint or treat with a rust preventative. This is especially important on suction line filter driers which are continually wet
when the unit is operating.

NOTE: Be careful not to kink or dent refrigerant lines. Kinked or dented lines will cause poor performance or compressor
damage.

Do NOT make final refrigerant line connection until plugs
are removed from refrigerant tubing.

NOTE: Before brazing, verify indoor TXV is correct for R410A

and proper size.

TO

AVOID POSSIBLE EXPLOSION, THE LINE FROM THE NITROGEN

CYLINDER MUST INCLUDE A PRESSURE REGULATOR AND A PRESSURE

RELIEF VALVE

NO MORE THAN

. THE

PRESSURE RELIEF VALVE MUST BE SET TO OPEN AT

150

PSIG

WARNING

.

L

EAK TESTING

Pressure test the system using dry nitrogen and soapy water to
locate leaks. If you wish to use a leak detector, charge the

(N

ITROGEN OR NITROGEN-TRACED

)

WARNING

TO

AVOID THE RISK OF FIRE OR EXPLOSION, NEVER USE OXYGEN, HIGH

PRESSURE AIR OR FLAMMABLE GASES FOR LEAK TESTING OF A

REFRIGERATION SYSTEM

4

.

system to 10 psi using the appropriate refrigerant then use ni­trogen to finish charging the system to working pressure then
apply the detector to suspect areas. If leaks are found, repair
them. After repair, repeat the pressure test. If no leaks exist,
proceed to system evacuation.

S

YSTEM EVACUATION

Condensing unit liquid and suction valves are closed to contain
the charge within the unit. The unit is shipped with the valve
stems closed and caps installed. Do not open valves until

the system is evacuated.

REFRIGERANT UNDER PRESSURE!

F

AILURE TO FOLLOW PROPER PROCEDURES MAY CAUSE PROPERTY

DAMAGE, PERSONAL INJURY OR DEATH

P

ROLONGED OPERATION AT SUCTION PRESSURES LESS THAN

FOR MORE THAN

SCROLLS AND PERMANENT DAMAGE TO THE SCROLL TIPS, DRIVE

BEARINGS AND INTERNAL SEAL

5

SECONDS WILL RESULT IN OVERHEATING OF THE

WARNING

.

CAUTION

.

20

PSIG

NOTE: Scroll compressors should never be used to evacuate or
pump down a heat pump or air conditioning system.

5000

1. Connect the vacuum pump with 250 micron capability to
the service valves.

2. Evacuate the system to 250 microns or less using suction
and liquid service valves. Using both valves is necessary
as some compressors create a mechanical seal separating
the sides of the system.

3. Close pump valve and hold vacuum for 10 minutes. Typically
pressure will rise during this period.

• If the pressure rises to 1000 microns or less and remains
steady the system is considered leak-free; proceed to
startup.

4500
4000
3500

MICRONS

3000

IN

2500

ACUUM

2000

V

1500
1000

500

0 1 2 3 4 5 6 7 8 9

CONDENSIBLES OR SMALL
LEAK PRESENT

NO LEAKS
NO CONDENSIBLES

MINUTES

LEAK(S)
PRESENT

10

• If pressure rises above 1000 microns but holds steady
below 2000 microns, moisture and/or noncondensibles
may be present or the system may have a small leak.
Return to step 2: If the same result is encountered check
for leaks as previously indicated and repair as necessary
then repeat evacuation.

• If pressure rises above 2000 microns, a leak is present.
Check for leaks as previously indicated and repair as
necessary then repeat evacuation.

E

LECTRICAL CONNECTIONS

The condensing unit rating plate lists pertinent electrical data

HIGH VOLTAGE!

D

ISCONNECT

ULTIPLE POWER SOURCES MAY BE PRESENT

M

TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL

INJURY OR DEATH DUE TO ELECTRIC SHOCK

MUST CONFORM WITH

CODES

EQUIPMENT PERFORMANCE, EQUIPMENT DAMAGE OR

FIRE

ALL

POWER BEFORE SERVICING

NEC OR CEC

. U

NDERSIZED WIRES COULD CAUSE POOR

.

WARNING

. W

AND ALL LOCAL

.

. F

AILURE

IRING

necessary for proper electrical service and overcurrent protec­tion. Wires should be sized to limit voltage drop to 2% (max.)
from the main breaker or fuse panel to the condensing unit.
Consult the NEC, CEC, and all local codes to determine the
correct wire gauge and length.

TO

AVOID THE RISK OF FIRE OR EQUIPMENT DAMAGE, USE COPPER

CONDUCTORS

.

WARNING

Local codes often require a disconnect switch located near the
unit; do not install the switch on the unit. Refer to the installation instructions supplied with the indoor furnace/air handler for
specific wiring connections and indoor unit configuration. Likewise, consult the instructions packaged with the thermostat for
mounting and location information.

O

VERCURRENT PROTECTION

The following overcurrent protection devices are approved for use.

• Time delay fuses

• HACR type circuit breakers

These devices have sufficient time delay to permit the motor-compressor to start and accelerate its load.

5

H

IGH VOLTAGE CONNECTIONS

Route power supply and ground wires through the high voltage port
and terminate in accordance with the wiring diagram provided in­side the control panel cover.

LOW V

Condensing unit control wiring requires a nominal 24 V AC (+/- 6
V AC), 60 Hz, minimum 25 V A service from either the indoor or an
optional outdoor transformer. Low volt age wiring for the condens­ing units depends on the thermostat used. The unit is designed to
work as part of a fully communicating HV AC system utilizing the
ComfortNet™ CTK0* thermostat, ComfortNet™ compatible indoor
unit, and up to four wires.

The unit also has legacy 24 V AC inputs to support non-communi­cating systems. Route control wires through the low voltage port and termi­nate in accordance with the wiring diagram provided inside the control panel
cover.

NOTE: For two-stage units, refer to the Installation Instructions supplied with the
variable speed indoor units for field wiring connections.

NOTE: If the heat pump unit is wired in the communicating mode together
with a compatible communicating indoor unit and CTK0* communicating
thermostat, then the communicating thermostat is able to search and identify
the condensing unit when power is applied to the system. Refer to the
Installation Manual of the optional communicating thermostat for more
information.

OL TAGE CONNECTIONS

60

60

30 Min ut e s

60

60

90 Minutes

Voltage Ports

60

30
0

60

60

30

60

0

60 Minutes

120 Minutes

HIGH
VOLTAGE
PORT

LOW
VOLTAGE
PORT

30
0

30
0

Use the dipswitch to select defrost time interval (30, 60, 90, 120
minutes; see chart below).

Factory default setting is 30 minutes. The maximum defrost
cycle time is 10 minutes.

Dipswitch Settings for Selection

of Defrost Time

CAUTION

S

YSTEM START UP

NOTE: Power must be supplied to the 18 SEER outdoor units
containing ECM motors before the power is applied to the indoor
unit. Sending a low voltage signal without high voltage power
present at the outdoor unit can cause malfunction of the control module on the ECM motor.

Adequate refrigerant charge for the matching evaporator coil or air handler and 15 feet of lineset is supplied with the condens­ing unit. If using evaporator coils or air handlers other than HSVTC coil it maybe necessary to add or remove refrigerant to attain
proper charge. If line set exceeds 15 feet in length, refrigerant should be added at .6 ounces per foot of liquid line.

NOTE: Charge should always be checked using superheat when using a piston and subcooling when using TXV equipped
indoor coil to verify proper charge.

Open the suction service valve first! If the liquid service valve is opened first, oil from the compressor may be drawn into the indoor
coil TXV , restricting refrigerant flow and affecting operation of the system.

When opening valves with retainers, open each valve only until the top of the stem is 1/8” from the retainer . To avoid loss of
refrigerant, DO NOT apply pressure to the retainer . When opening valves without a retainer remove service valve cap and insert
a hex wrench into the valve stem and back out the stem by turning the hex wrench counterclockwise. Open the valve until it
contacts the rolled lip of the valve body .

NOTE: These are not back-seating valves. It is not necessary to force the stem tightly against the rolled lip.
After the refrigerant charge has bled into the system, open the liquid service valve. The service valve cap is the secondary seal

for the valve and must be properly tightened to prevent leaks. Make sure cap is clean and apply refrigerant oil to threads and

POSSIBLE REFRIGERANT LEAK!

TO

AVOID A POSSIBLE REFRIGERANT LEAK, OPEN THE SERVICE VALVES

UNTIL THE TOP OF THE STEM IS

1/8”

FROM THE RETAINER

.

6

sealing surface on inside of cap. Tighten cap finger-tight and then tighten additional 1/6 of a turn (1 wrench flat) to properly seat
the sealing surfaces.

Do not introduce liquid refrigerant from the cylinder into the crankcase of the compressor as this may damage the
compressor.

1. Break vacuum by fully opening liquid and suction base valves.

2. Set thermostat to call for cooling. Check indoor and outdoor
fan operation and allow system to stabilize for 10 minutes
for fixed orifices and 20 minutes for expansion valves.

C

HARGE VERIFICA TION

CAUTION

USE

REFRIGE RANT CERTIFIED TO

COMPRE SSOR DAMAGE, AND DAMAGE CAUSED BY USED REG RIGERA NT IS NOT

COVERE D UNDER THE WARRANTY

REFRIGE RANT TO MEET

AHRI

AHRI

STANDA RDS

. M

OST PORTABLE MACHINES CANNO T CLEAN USED

STANDA RDS

. U

SED REFRIGE RANT MAY CAUSE

.

NOTICE

V

IOLATION OF

PENALTIES

EPA

REGULATIONS MAY RESULT IN FINES OR OTHER

.

REFRIGERANT UNDER PRESSURE!

• DO

NOT OVERCHARGE SYSTEM WITH REFRIGERANT

O NOT OPERATE UNIT IN A VACUUM OR AT NEGATIVE PRESSURE

• D

AILURE TO FOLLOW PROPER PROCEDURES MAY CAUSE PROPERTY

F

DAMAGE, PERSONAL INJURY OR DEATH

O

PERATING THE COMPRE SSOR WITH THE SUCTION VALVE CLOSED MAY

CAUSE SERIOUS COMPRESSOR DAMAGE

WARNING

.

.

.

CAUTION

.

SATURATED SUCTION PRESSURE

TEMPERATURE CHART

SUCTION PRESSURE

P SIG R-22 R-41 0A

50 26 1
52 28 3
54 29 4
56 31 6
58 32 7
60 34 8
62 35 10
64 37 11
66 38 13
68 40 14
70 41 15
72 42 16
74 44 17
76 45 19
78 46 20
80 48 21
85 50 24
90 53 26

95 56 29
100 59 31
110 64 36
120 69 41
130 73 45
140 78 49
150 83 53
160 86 56
170 90 60

SATURATED SUCTI ON

TEMPERATURE ºF

SATURATED LIQUID PRESSURE

TEMPERATURE CHART

LIQUID PRESSURE

P SIG R-22 R-41 0A

200 101 70
210 105 73
220 108 76
225 110 78
235 113 80
245 116 83
255 119 85
265 121 88
275 124 90
285 127 92
295 130 95
305 133 97
325 137 101
355 144 108
375 148 112
405 155 118
415 157 119
425 n/a 121
435 n/a 123
445 n/a 125
475 n/a 130
500 n/a 134
525 n/a 138
550 n/a 142
575 n/a 145
600 n/a 149
625 n/a 152

SATUR ATED LIQU ID

TEMPERATURE ºF

7

F

INAL CHARGE ADJUSTMENT

The outdoor temperature must be 60°F or higher . Set the room
thermostat to COOL, fan switch to AUTO, and set the tem­perature control well below room temperature.

After system has stabilized per startup instructions, check
subcooling and superheat as detailed in the following section.

E

XPANSION VALVE SYSTEM

NOTE: Units matched with indoor coils equipped with non-adjustable TXV should be charged by subcooling only.

Run the unit on low stage cooling for 10 minutes until refrigerant pressures stabilize. Use the following guidelines and methods
to check unit operation and ensure that the refrigerant charge is within limits. Charge the unit on low stage.

1. Purge gauge lines. Connect service gauge manifold to base-valve service ports. Run system at least 10 minutes to allow
pressure to stabilize.

2. T emporarily inst all a thermometer on the liquid line at the liquid line service valve and 4-6" from the compressor on the
suction line. Ensure the thermometer makes adequate contact and is insulated for best possible readings. Use liquid line
temperature to determine subcooling and vapor temperature to determine superheat.

3. Check subcooling and superheat. Systems with TXV application should have a subcooling of 5 to 7°F and superheat of
7 to 9 °F.

a. If subcooling and superheat are low, adjust TXV to 7 to 9 ºF superheat, then check subcooling.

NOTE: T o adjust superheat, turn the valve stem clockwise to increase and counter clockwise to decrease.
b. If subcooling is low and superheat is high, add charge to raise subcooling to 5 to 7 °F then check superheat.
c. If subcooling and superheat are high, adjust TXV valve to 7 to 9 ºF superheat, then check subcooling.
d. If subcooling is high and superheat is low, adjust TXV valve to 7 to 9 ºF superheat and remove charge to lower the

subcooling to 5 to 7 ºF.

TO

PREVENT PERSONAL INJURY, CAREFULLY CONNECT AND DISCONNECT

MANIFOLD GAUGE HOSES

BURNS

. DO

NOT VENT REFRIGERANT INTO THE ATMOSPHERE

ALL REFRIGERANT DURING SYSTEM REPAIR AND BEFORE FINAL UNIT

DISPOSAL

.

CAUTION

. E

SCAPING LIQUID REFRIGE RANT CAN CAUSE

. R

ECOVER

NOTE: Do NOT adjust the charge based on suction pressure unless there is a gross undercharge.

4. Disconnect manifold set, installation is complete.

SUBCOOLING FORMULA = SAT. LIQUID TEMP. - LIQUID LINE TEMP.

NOTE: Check the Schrader ports for leaks and tighten valve cores if necessary . Install cap s finger-tight.

H

EAT PUMP

The proper method of charging a heat pump in the heat mode is by weight with the additional charge adjustments for line size,
line length, and other system components. For best results on outdoor units with TXVs, superheat should be 2-5° at 4-6" from
the compressor. Make final charge adjustment s in the cooling cycle.

- H

EATING CYCLE

ADDITIONAL NOTES

1. There are (3) 7-segment LED displays on the PCB. Refer to the Troubleshooting chart at the end of this manual for
definitions of the LED status.

2. “TERM” dip switch is used for communications bus configuration. Leave the settings to the factory default position.

3. “LEARN” push button is used to reset the communications between the equipment. Used only for troubleshooting
purposes.

4. Press “TEST” push button, during system “Standby” mode to turn on both the compressor and outdoor fan for five
seconds.

5. The “RECALL” push button is used to retrieve the six most recent faults. The control must be in Standby Mode (no
thermostat inputs) to use the feature. Depress the push button for approximately two seconds and less than five seconds.
The 7-segment LED displays will then display the six most recent faults beginning with the most recent fault and
decrementing to the least recent fault. The faults may be cleared by depressing the button for greater than five seconds.
Consecutively repeated faults are displayed a maximum of three times. Refer to the fault code definitions at the end of
this manual for more details.

8