Daikin Goodman GSZ140481A User manual
© 2016, 2018-2019, 2021-2022
Daikin Comfort Technologies Manufacturing, L.P.
19001 Kermier Road, Waller, TX 77484
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-911E Date: September 2022
CONDENSING UNIT
HEAT PUMP
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 in-
formation and instructions accompanying these symbols. Failure to
heed safety information increases the risk of personal injury, property
damage, and/or product damage.
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SHIPPING INSPECTION
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, specications, 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.
CODES & REGULATIONS
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 performance is
achieved after 20 hours of operation. Rated performance is deliv-
ered at the specied airow. See outdoor unit specication sheet
for split system models or product specication sheet for pack-
aged and light commercial models. Specication sheets can be
found at www.goodmanmfg.com for Goodman® brand products or
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IN THIS MANUAL, OR ATTEMPTING TO INSTALL, ADJUST,
-
WARNING
WARNING
Scroll equipped units should never be used to evacuate the air
conditioning system. Vacuums this low can cause internal
electrical arcing resulting in a damaged or failed compressor.
2
www.amana-hac.com for Amana® brand products. Within either
website, please select 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 specication sheet.
has issued various regulations regarding the introduction and
may harm the environment and can lead to the imposition of
Should you have any questions please contact
the local oce of the EPA.
If replacing a condensing unit or air handler, the system must be
manufacturer approved and Air Conditioning, Heating and Refrig-
eration Institute (AHRI) matched. NOTE: Installation of unmatched
systems is not allowed.
Operating the unit in a structure that is not complete (either as part
of new construction or renovation) is not covered by the warranty.
INSTALLATION 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; however, if
vertical conditions require placement beneath an obstruction there
should be a minimum of 60 inches between the top of the unit and
the obstruction(s). The specied dimensions meet requirements for
air circulation only. Consult all appropriate regulatory codes prior to
determining nal 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-
ture maintains minimum service clearance. Corner installations are
strongly discouraged.
OK!
OK!
AA AAA
A
CC
CC
OK!
OK!
OK!
OK!
NOT
RECOMMENDED
AA
AA AA
AA
AA
B B B
B
Model Type A B C AA
Residential 10" 10" 18" 20"
Light Commercial 12" 12" 18" 24"
Minimum Airflow Clearance
This unit can be located at ground oor level or on at roofs. At
ground oor level, the unit must be on a solid, level foundation
that will not shift or settle. To reduce the possibility of sound trans-
mission, the foundation slab should not be in contact with or be an
integral part of the building foundation. Ensure the foundation is
sucient to support the unit. A concrete slab raised above ground
level provides a suitable base.
If it is necessary to install this unit on a roof structure, ensure the
roof structure can support the weight and that proper consider-
ation 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 con-
tinuous subfreezing temperatures. Heat pump unit bases have
cutouts under the outdoor coil that permit drainage of frost accu-
mulation. Situate the unit to permit free unobstructed drainage of
the defrost water and ice.
In more severe weather locations, it is recommended that the
unit be elevated to allow unobstructed drainage and air ow. The
following elevation minimums are recommended
bel ow -5°
12"
Design Temperature
Suggested Minimum Elevation
+15° and above
2 1/2"
-5° to +14°
8"
While these items will not cover every conceivable situation, they
should serve as a useful guide.
To avoid possible injury, explosion or death, practice safe
handling of refrigerants.
3
Refrigerants are heavier than air. They can "push out" the oxygen
in your lungs or in any enclosed space. To avoid possible difficulty
in breathing or death:
Never purge refrigerant into an enclosed room or
space. By law, all refrigerants must be reclaimed.
If an indoor leak is suspected, thoroughly ventilate the
area before beginning work.
• Liquid refrigerant can be very cold. To avoid possible
frostbite or blindness, avoid contact and wear gloves
and goggles. If liquid refrigerant does contact your
skin or eyes, seek medical help immediately.
• Always follow EPA regulations. Never burn refrigerant,
as poisonous gas will be produced.
•
•
To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrigerant
from a system.
• Ensure the cylinder is free of damage which could lead to
a leak or explosion.
• Ensure the hydrostatic test date does not exceed 5 years.
• Ensure the pressure rating meets or exceeds 400 lbs.
When in doubt, do not use cylinder.
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, oor joists, wall studs, oors, 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 foun-
dation or wall and refrigerant lines should be lled with a pliable
silicon-based caulk, RTV or a vibration damping material. Avoid
suspending refrigerant tubing from joists and studs with rigid wire
or straps that would come in contact with the tubing. Use an in-
sulated or suspension type hanger. Keep both lines separate and
always insulate the suction line.
Insulation is necessary to prevent condensation from forming and
dropping from the suction line. Armex (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.
EXISTING LINE SETS
Where possible, drain as much residual compressor oil from existing
systems, lines, and traps; pay close attention to low areas where
oil may collect. Use of an approved ushing agent is recommended
followed by a nitrogen purge to remove any remaining ushing
agent from the lines or indoor coil. Replacement of indoor coil is
recommended.
NOTE: If using existing indoor coil and changing refrigerant types,
ensure the indoor coil and metering device are compatible with the
type of refrigerant being used. If new indoor coil is required check
spec sheet or AHRI for approved coil. If system is being replaced
due to compressor electrical failure, assume acid is in system. Refer
to Service Procedure S-115 Compressor Burnout in service manual
for clean-up procedure.
4
IMPORTANT
To avoid overheating the service valve, TXV valve, or lter 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 ux.
Torch heat required to braze tubes of various sizes is propor-
tional 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 nish 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 lter drier paint nish is intact after brazing. If
the paint of the steel lter drier has been burned or chipped,
repaint or treat with a rust preventative. This is especially
important on suction line lter 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 nal refrigerant line connection until plugs are re-
moved from refrigerant tubing.
NOTE: Before brazing, verify indoor piston size by checking the
piston kit chart packaged with indoor unit.
WARNING
WARNING
Leak test the system using dry nitrogen and soapy
water to identify leaks. If you prefer to use an electronic
leak detector, charge the system to 10 PSIG with the
appropriate system refrigerant (see Serial Data Plate
for refrigerant identication). Do not use an alternative
refrigerant. Using dry nitrogen nish charging the system
to 450 PSIG. Apply the leak detector to all suspect areas.
When leaks are discovered, repair the leaks, and repeat
the pressure test. If leaks have been eliminated proceed to
system 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.
WARNING
CAUTION
The Deep Vacuum Method requires a vacuum pump
rated for 500 microns or less. This method is an eective
and ecient way of assuring the system is free of non-
condensable air and moisture. As an alternative, the Triple
Evacuation Method is detailed in the Service Manual for
this product model.
It is recommended to remove the Schrader Cores from the
service valves using a core-removal tool to expedite the
evacuation procedure.
1. Connect the vacuum pump, micron gauge, and vacuum
rated hoses to both service valves. Evacuation must use
both service valves to eliminate system mechanical seals.
2. Evacuate the system to less than 500 microns.
3. Isolate the pump from the system and hold vacuum for
10 minutes (minimum). Typically, pressure will rise slowly
during this period. If the pressure rises to less than 1000
microns and remains steady, the system is considered
leak-free; proceed to system charging and startup.
4. If pressure rises above 1000 microns but holds steady
below 2000 microns, non-condensable air or moisture
may remain or a small leak is present. Return to step 2:
If the same result is achieved check for leaks and repair.
Repeat the evacuation procedure.
5. If pressure rises above 2000 microns, a leak is present.
Check for leaks and repair. Repeat the evacuation
procedure.
5
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0 1 2 3 4 5 6 7 8 9 10
PRESENT
MINUTES
VACUUM IN MICRONS
LEAK PRESENT
NO LEAKS
NO
ELECTRICAL CONNECTIONS
HIGH VOLTAGE!
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or death due to electric shock.
Wiring must conform with NEC or CEC and all local codes.
Undersized wires could cause poor equipment performance,
equipment damage or fire.
To avoid the risk of fire or equipment damage, use copper
conductors.
The condensing unit rating plate lists pertinent electrical data neces-
sary 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.
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 specic
wiring connections and indoor unit conguration. Likewise, consult
the instructions packaged with the thermostat for mounting and
location information.
The following overcurrent protection devices are approved for use.
• Time delay fuses
• HACR type circuit breakers
These devices have sucient time delay to permit the motor-com-
pressor to start and accelerate its load.
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.
The indoor transformer must supply 24 volt AC low voltage power to
the outdoor section for the control wiring. Cooling only units require
25VA minimum and heat pump units require 40VA minimum. Low
voltage wiring for two-stage units depends on the thermostat used
and the number of control wires between the indoor unit and the
condensing unit. Route control wires through the low voltage port
and terminate in accordance with the wiring diagram provided inside
the control panel cover.
CW2 OYR YOCW2 GRE
R
G
W2
W3
RED
GREEN
WHITE
BROWN
BL
W
EHR
G
R
R
R
B
L
U
E
W
H
I
T
E
O
R
A
N
G
E
P
U
R
P
L
E
R
E
D
HEAT PUMP
TYPICAL H/P
ROOM THERMOSTAT
INDOOR UNIT
Y
O
#18 GAUGE 5 WIRE
C W2 OYRYOCW2 GRE
R
G
W2
C
RED
GREEN
WHITE
BLUE
BL
BL
W
W BR
G
R
R
R
B
L
U
E
W
H
I
T
E
O
R
A
N
G
E
P
U
R
P
L
E
R
E
D
HEAT PUMP
TYPICAL H/P
ROOM THERMOSTAT
INDOOR UNIT
Y
O
W
BL
#18 GAUGE 5 WIRE
CBLUE
1
2
3
4
W
BL
R
G
W
BR
BL
R
G
W
BL
COLOR CODES
GR - GREEN PU - PURPLE
NOTE: Units with crankcase heaters should have high voltage
power energized for 24 hours prior to start up.
Heat pumps are equipped with a time/temperature defrost con-
trol with eld selectable defrost intervals of 30, 60, or 90 minutes.
This setting should be adjusted at this time if needed. The
defrost control also has SmartShift™ technology, which delays
compressor operation at defrost initiation and termination. If
disabling this function is desired, move the jumper from “DLY”
to “NORM” on the defrost control
Adequate refrigerant charge for a matching evaporator and 15 feet
lineset is supplied with the condensing unit. If line set exceeds 15
feet in length, refrigerant should be added at .6 ounces per foot of
liquid line.
If the liquid service valve is
opened rst, oil from the compressor may be drawn into the indoor
coil TXV, restricting refrigerant ow and aecting operation of the
system.
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
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 sealing surface
on inside of cap. Tighten cap nger-tight and then tighten additional
1/6 of a turn (1 wrench at), or to the following specication, to
properly seat the sealing surfaces.
1. 3/8” valve to 5 - 10 in-lbs
2. 5/8” valve to 5 - 20 in-lbs
3. 3/4” valve to 5 - 20 in-lbs
4. 7/8” valve to 5 - 20 in-lbs
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 20 minutes for
expansion valves.
REFRIGERANT UNDER PRESSURE!
• Do not overcharge system with refrigerant.
• Do not operate unit in a vacuum or at negative pressure.
Failure to follow proper procedures may cause
property damage, personal injury or death.
Use refrigerant certified standards. Used refrigerant
may cause compressor damage. Most portable machines
cannot clean used refrigerant to meet tandards.
to AHRI
AHRI s
NOTICE
Operating the compressor with the suction valve closed is not
covered by the warranty and will cause serious
compressor damage.
Airow and Total Static Pressure for the indoor unit should be
veried before attempting to charge system.
1. Total static pressure is .5” WC or less.
2. Airow is correct for installed unit.
3. Airow tables are in the installation manual and Spec Sheet
for Indoor Unit.
4. Complete charging information are in Service Manual
RS6200006
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.
Units matched with indoor coils equipped with a non-adjustable
TXV should be charged by Subcooling only. Superheat on
indoor coils with adjustable TXV valves are factory set and no
adjustment is normally required during startup. Only in unique
applications due to refrigerant line length, dierences in height
between the indoor and outdoor unit and refrigerant tubing sizes
or poor performance should Superheat setting require adjustment.
These adjustments should only be performed by qualied service
personnel. For detailed charge and TXV adjustments refer to the
appropriate Service Manual.
55 57 59 61 63 65 67 69 71
10 13 17 20 23 26 29 30 31
811 14 16 19 22 26 27 29
5 8 10 13 15 19 23 24 25
--- --- 6 9 11 15 20 21 23
--- --- --- --- 712 17 18 20
--- --- --- --- --- 813 15 16
--- --- --- --- --- 710 11 13
--- --- --- --- --- --- 7 8 10
--- --- --- --- --- --- --- 7 8
--- --- --- --- --- --- --- --- 7
--- --- --- --- --- --- --- --- ---
--- --- --- --- --- --- --- --- ---
SYSTEM SUPERHEAT (+/- 1°F)
Indoor Wet Bulb Temperature, °F
Outdoor Dry Bulb
Temperature, °F
60
65
70
105
110
115
75
80
85
90
95
100
7
NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE.
PSIG R-22 R-410A
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
TEMPERATURE CHART
SUCTION PRESSURE
PSIG R-22 R-410A
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 SUCTION PRESSURE
TEMPERATURE CHART
SATURATED SUCTION
8
1. Temporarily install a thermometer 4-6” from the compressor
on the suction line. Ensure the thermometer makes adequate
contact and is insulated for best possible readings.
2. Measure pressure using service gauge manifold connected to
true suction access port. (Superheat is saturation temperature
from the pressure measurement subtracted from the actual
tube temperature.)
3. Refer to the superheat table provided for proper system su-
perheat. Add charge to lower superheat or recover charge to
raise superheat.
Charge by Subcooling: Applicable to both Adjustable and
-
NOTE: When charging unit with two-stage compressor, charge unit
at low stage.
1. Purge the gauge lines and connect the service gauge manifold
to the liquid (small) service port and true suction access port.
2. Clamp a pipe clamp thermometer on the liquid line near the
liquid line service valve.
a. Ensure the thermometer makes adequate contact to obtain
the best possible readings.
b. The temperature read with the thermometer should be lower
than the saturated condensing temperature.
3. Measure pressure using service gauge manifold connected
to the liquid (small) service port. Refer to the chart above to
obtain saturated temperature corresponding to the measured
pressure.
4. The dierence between the saturated condensing temperature
and the recorded liquid line temperature is the liquid Subcool-
ing value.
5. TXV-based systems should have a Subcooling value of 8°F
+/- 1°F. In two-stage compressor systems, targeted Subcool
value is 6°F +/- 1°F.
6. Add refrigerant to increase Subcooling and remove refrigerant
to decrease Subcooling.
Superheat can also be utilized to best verify charge levels with
in height between the indoor and outdoor unit and refrigerant
tubing sizes. These adjustments should only be performed by
Advanced Adjustment Recommendations
-
TURE - SATURATED SUCTION TEMPERATURE
1. Clamp a pipe clamp thermometer 4-6” from compressor on
suction line at the outdoor unit.
a. Ensure the thermometer makes adequate contact for the
best possible readings.
b. The temperature read with the thermometer should be
higher than the saturated suction temperature.
2. Measure the pressure using service gauge manifold connected
to the true suction access port. Refer to the chart above to
obtain saturated temperature corresponding to the measured
pressure.
3. The dierence between the saturated suction temperature and
the recorded suction line temperature is the Superheat value.
4. TXV-based systems should have a Superheat value of 8°F
+/- 1°F.
5. Adjust Superheat by turning the TXV valve stem clockwise to
increase and counterclockwise to decrease.
a. If Subcooling and Superheat are low, adjust the TXV to
8°F +/- 1°F superheat, and then check Subcooling.
b.If Subcooling is low and Superheat is high, add charge to
raise Subcooling to 8°F +/- 1°F then check Superheat. In
two-stage compressor systems, targeted Subcool value
is 6°F +/- 1°F.
c. If Subcooling and Superheat are high, adjust the TXV valve
to 8°F +/- 1°F Superheat, then check the Subcooling value.
d. If Subcooling is high and Superheat is low, adjust the TXV
valve to 8°F +/- 1°F Superheat and remove charge to lower
the Subcooling to 8°F +/- 1°F. In two-stage compressor
systems, targeted Subcool value is 6°F +/- 1°F.
NOTE: DO NOT adjust the charge based exclusively on suction pres-
sure unless for general charging in the case of a gross undercharge.
NOTE: Check the Schrader ports for leaks and tighten valve cores
if necessary. Install caps nger-tight.
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 5°F +/- 1°F at 4-6” from the compressor.
NOTE: In system with TWO-stage compressor, charge at low
Make nal charge adjustments in the cooling cycle.
9
Complaint
System
Operating
Pressure s
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
SYMPTOM
System will not start
Compressor will not start - fan runs
Comp. and Cond. Fan will not start
Evaporator fan will not start
Condenser fan will not start
Compressor runs - goes off on overload
Compressor cycles on overload
System runs continuously - little cooling/htg
Too cool and then too warm
Not cool enough on warm days
Certain areas too cool, others too warm
Compressor is noisy
System runs - blows cold air in heating
Unit will not terminate defrost
Unit will not defrost
Low suction pressure
Low head pressure
High suction pressure
High head pressure
Test Method
Remedy
Power Failure
•
Test Voltage
Blown Fuse
• • •
Inspect Fuse Size & Type
Unbalanced Power, 3PH
• • •
Test Voltage
Loose Connection
• • •
Inspect Connection - Tighten
Shorted or Broken Wires
••••••
Test Circuits With Ohmmeter
Open Fan Overload
• •
Test Continuity of Overload
Faulty Thermostat
• • • •
Test Continuity of Thermostat & Wiring
Faulty Transformer
• •
Check Control Circuit with Voltmeter
Shorted or Open Capacitor
• ••••
Test Capacitor
Internal Compressor Overload Open
•
♦
Test Continuity of Overload
Shorted or Grounded Compressor
• •
Test Motor Windings
Compressor Stuck
• • •
♦
Use Test Cord
Faulty Compressor Contactor
• • •
Test Continuity of Coil & Contacts
Faulty Fan Relay
•
Test Continuity of Coil And Contacts
Open Control Circuit
•
Test Control Circuit with Voltmeter
Low Voltage
• • •
Test Voltage
Faulty Evap. Fan Motor
• •
♦
Repair or Replace
Shorted or Grounded Fan Motor
• •
Test Motor Windings
Improper Cooling Anticipator
• •
Check Resistance of Anticipator
Shortage of Refrigerant
• •
♦
• •
Test For Leaks, Add Refrigerant
Restricted Liquid Line
• • • • •
Remove Restriction, Replace Restricted Part
Open Element or Limit on Elec. Heater
♦ ♦
Test Heater Element and Controls
Dirty Air Filter
• • • •
♦
Inspect Filter-Clean or Replace
Dirty Indoor Coil
• • • •
♦
Inspect Coil - Clean
Not enough air across Indoor Coil
• • • •
♦
Check Blower Speed, Duct Static Press, Filter
Too much air across Indoor Coil
♦
•
Reduce Blower Speed
Overcharge of Refrigerant
• • •
♦
• •
Recover Part of Charge
Dirty Outdoor Coil
• • •
♦
•
Inspect Coil - Clean
Noncondensibles
• •
♦
•
Recover Charge, Evacuate, Recharge
Recirculation of Condensing Air
• • •
Remove Obstruction to Air Flow
Infiltration of Outdoor Air
• • •
Check Windows, Doors, Vent Fans, Etc.
Improperly Located Thermostat
• •
Relocate Thermostat
Air Flow Unbalanced
• •
Readjust Air Volume Dampers
System Undersized
• •
Refigure Cooling Load
Broken Internal Parts
•
♦
Replace Compressor
Broken Valves
• • • •
Test Compressor Efficiency
Inefficient Compressor
•
♦
• •
Test Compressor Efficiency
Wrong Type Expansion Valve
• • • • • •
♦
Replace Valve
Expansion Device Restricted
• • • • • • •
Remove Restriction or Replace Expansion Device
Oversized Expansion Valve
• •
Replace Valve
Undersized Expansion Valve
• • • • •
Replace Valve
Expansion Valve Bulb Loose
• •
Tighten Bulb Bracket
Inoperative Expansion Valve
• • •
Check Valve Operation
Loose Hold-down Bolts
•
Tighten Bolts
Faulty Reversing Valve
•
♦♦♦ ♦♦♦
Replace Valve or Solenoid
Faulty Defrost Control
•
♦♦♦♦♦ ♦
Test Control
Faulty Defrost Thermostat
♦♦♦♦♦♦♦
Test Defrost Thermostat
Flowrator Not Seating Properly
• • •
Check Flowrator & Seat or Replace Flowrator
•
Cooling or Heating Cycle (Heat Pump)
♦
COOLING/HP ANALYSIS CHART
No Cooling
Unsatisfactory Cooling/Heating
Heating Cycle Only (Heat Pump)
10
LONG LINE SET APPLICATION R-410A
• Units must be installed in accordance with Regulations of the
National Fire Protection Association and applicable local codes.
Where local regulations are at a variance with instructions, in-
staller should adhere to local codes.
• Before connecting tubing, read this installation manual. Pay
particular attention to all safety precautions.
This long line set application guideline applies to all AHRI listed R-410A
heat pump split system matches of nominal capacity 18,000 to 60,000
Btuh. This guideline will cover installation requirements and additional
accessories needed for split system installations where the line set
exceeds 80 feet in actual length. The long line sets in this manual are
congured for the when outdoor unit is above the Indoor unit.
This guideline is meant to provide installation instructions based on
most common long line set applications. Installation variables may
aect the system operation.
Contact Goodman® Technical Services for variations or applications
outside those outlined in this document.
Section 1. General Requirements for All Long Line Set Applications
1. Equivalent length must be used to determine acceptability of any long line set application. See Section 3 for equivalent length
calculations.
• A long line application when the linear length of interconnecting tubing exceeds 80 ft.
• Vertical separation between Indoor and Outdoor units exceeds 20 ft.
2. For any residential split system installed with a long line set, 3/8” liquid line size must be used. Limiting the liquid line size to 3/8”
is critical because an increased refrigerant charge level from having a larger liquid line could possibly shorten a compressor’s life
span. See table 3-3 for allowable suction line diameters for single-stage systems.
3. Most refrigerant tubing kits are supplied with 3/8” thick insulation on the suction line. For long line installations over 80 feet, ½”
thick suction line insulation is required to reduce loss of capacity if the line set passes through a high ambient temperature zone.
The liquid line must be insulated if more than 50 feet of liquid line will pass through an area that might reach temperature of 30°F
or higher than outdoor ambient. Never attach a liquid line to any uninsulated portion of the suction line.
4. Hard start assist is required.
5. Use of a thermostatic expansion valve (TXV) is required in all long line set applications. Unit must be charged to 7 to 9 ºF sub-
cooling at the indoor unit.
6. Maximum of line set is:
a. Maximum equivalent length of line is 250 feet for single stage units with scroll compressors.
b. Maximum linear/actual length is 200 feet.
c. Maximum vertical separation of outdoor unit above indoor unit is 200 feet (Figure 1-4).
d. Maximum vertical separation of outdoor unit below indoor unit is 80 feet.
7. Low voltage wiring. Verify low voltage wire gauge is adequate for the length used due to increased line set application.
8. Vibration and Noise: In long line applications, refrigerant tubing is highly prone to transmit noise and vibration to the adjoining
structure. When mounting line set to structural members, use adequate vibration-isolating hardware. For examples of proper
mounting, see Figures 1-1, 1-2 and 1-3
Only personnel that have been trained to install, adjust,
service or repair (hereinafter, “service”) the equipment
specified in this manual should service the equipment.
The manufacturer will not be responsible for any injury or
property damage arising from improper service or service
procedures. If you service this unit, you assume
responsibility for any injury or property damage which
may result. In addition, in jurisdictions that require one or
more licenses to service the equipment specified in this
manual, only licensed personnel should service the
equipment. Improper installation, adjustment, servicing
or repair of 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.
11
.
Liquid Line
Suction Line
Wrapped in Armaflex®
Metal
Sleeve
Hanger
Wall
Stud Liquid Line
Strapped to
Suction Line
Figure 1-1
Installation of Refrigeration Piping from Vertical to Horizontal
Outside Wall
Inside Wall
Liquid Line
Suction Line
IMPORTANT - Refrigerant lines must not touch wall.
Strap
Sleeve
Strap
Sleeve
Wire Tie
Wire Tie
PVC Pipe
Caulk
Outside Wall
Armaflex
Wrapped
Suction Line
®
Liquid
Line
Wood Block
Between Studs
I
MPORTANT:
Refrigerant lines must NOT
come into contact with structure.
Fiberglass Insulation
Wood
Block
Figure 1-2
Installation of Refrigeration Piping (Vertical)
New Construction Shown
NOTE: If line set is installed on the exterior of an outside wall, similar installation practices are to be used.
12
Floor Joist or Roof Rafter
After the suction line has been strapped to the joist or rafter at 8’ intervals,
strap the liquid line to the suction line.
8’
Metal Sleeve
Wire Tie
(around suction line only)
Floor Joist or
Roof Rafter
Tape or Wire Tie
Tape or Wire Tie
8’
If hanging line set from a joist or rafter,
use metal strapping
or heavy nylon wire tires
that are securely anchored.
Strapping placed
around the suction line only
Figure 1-3.
Installation of Refrigerant Piping (Horizontal)
8. All units must have refrigerant charge veried by proper adjustment of subcooling at the indoor
unit after initial charge adjustment per Section 3. Proper adjustment means pressure and temperature of the liquid line at the indoor
unit must be measured to calculate subcooling at the indoor unit. If subcooling at the indoor unit is less than 5°F, then additional refrig-
erant must be added until this subcooling level is achieved. If subcooling at the indoor unit is more than 7°F, then refrigerant must be
removed until this subcooling level is achieved.
200' MAX
VERTICAL ELEVATION
TXV
REQUIRED ON INDOOR
FOR LONG LINE SET
APPLICATION
13
SECTION 2. Outdoor Unit is Above the Indoor Unit
Accessory Heat Pump (HP)
Crankcas e Heater (40 watts minimum) Yes
Hard Start Assist Yes
(See manual for each product)
TXV (Indoor) Yes
Liquid Line Solenoid at Outdoor Yes **
Inverted Refrigerant Trap at Indoor No
Oil Trap at Indoor Yes **
**An oil trap at the indoor unit is required if the elevation difference exceeds 80'.
The trap can be constructed of standard refrigerant fitting (See Figure 2-1.)
* Liquid line solenoid not required if non-bleed TXV is used on the outdoor unit.
1. Suction line must be sloped continuously towards the indoor unit.
2. The maximum elevation (vertical) dierence between the outdoor unit and indoor unit is 200 ft. for single stage heat pump (Figure
1.4).
3. Inverted suction loop is not required at either unit.
4. An accumulator is not required for air conditioners (accumulators are factory installed on heat pumps).
Long Radius Street Ell
45°
Street Ell
Short Radius
Street Ell
45°
Ell
Figure 2-1. Oil Trap
14
Acce ssory
Crankcase Heater (40 watts minimum) Yes
Hard Start Assist
Yes
(See manual for each product)
TXV (Indoor) Yes
Liquid Line Solenoid at Outdoor Yes *See Note 5
Inverted Refrigerant Trap at Indoor Yes
Oil Trap at Indoor No
1. The maximum elevation (vertical) dierence between the outdoor unit and the indoor unit is 80 feet.
2. Suction line must be installed in a manner to prevent liquid migration to the outdoor unit from the indoor unit (see following note 3).
3. An inverted suction line trap must be installed on the suction line just before the inlet to the indoor unit (see Figure 4-1). The top
of the inverted loop must be slightly above the top of the indoor unit coil and can be created simply by brazing two 90° long radius
elbows together if a bending tool is unavailable. Properly support and secure the inverted loop to the nearest point on the indoor
unit or adjacent structure.
4. An accumulator is required to be added (external to the outdoor unit, within 2 linear feet of the outdoor unit) for air conditioning in-
stallations. See Table 4-1 for accumulator selection. Adapter ttings at the accumulator connection may be required. Do NOT install
an accumulator in the suction line set in heat pump applications.
5. Liquid Line Solenoid not required if non-bleed TXV is used on the outdoor unit.
LH
L = Length of trap must be more than Indoor Unit Height (H)
Figure 4-1. Indoor Unit with Inverted Suction
oz. lb. Part Number Connection Part Number Connection
112 70151R00004P 3/4" 0151R00004P 3/4"
144 9B1226206 3/4" 0151R00004P 3/4"
176 11 B1226207 7/8" B1226206 3/4"
208 13 0151L00008 7/8" B1226206 3/4"
240 15 0151L00009 7/8" B1226207 7/8"
288 18 0151L00001 1 1/8" 0151L00008 7/8"
352 22 0151L00010 7/8" 0151L00001 1 1/8"
480 30 0151L00010 7/8" 0151L00010 7/8"
Total System
Refrigerant Charge
Table 4-1 Accumulator Size
Preferred
Minimum
Goodman Accumulator
15
1. In long line applications the “equivalent line length” is the sum of the straight length portions of the suction line plus losses (in
equivalent length) from 45 and 90 degree bends. Add the total straight (lineal) length of tubing to the equivalent length of elbows
and bends to get total equivalent length.
Equivalent length = Length + Length + Losses from bends (See Table 3-1)
Horizontal Vertical
2. Table 3-1 lists the equivalent length gained from adding bends to the suction line. Properly size the suction line to minimize capac-
ity loss.
3/4 7/8 1 1/8
90° short radius 1.7 22.3
90° long radius 1.5 1.7 1.6
45° 0.7 0.8 1
Type of
Elbow Fitting
Inside Diameter (inches)
Table 3-1. Losses from Suction Line Elbows (equivalent length, ft.)
EXAMPLE: 3/4” suction line using 3/4” elbows
150 feet of straight tubing + (four short radius elbows x1.7) + (2 long radius elbows x1.5)
150 + 3.4 + 3 = 156.4 equivalent feet
3. Table 3-2 lists multiplier values to recalculate system cooling capacity as a function of a system’s equivalent line length (as calculat-
ed from the suction line) and the selected suction tube size.
NOTE: Select the proper suction tube size based on equivalent length of the suction line.
(see Tables 3-1 and 3-2) and recalculated system capacity.
16
25 50 75 100 125 150 175 200 225 250
1/2 0.99 0.97 0.96 0.94 0.94 0.93 0.93 0.92 0.91 0.89
5/8 1.00 0.99 0.99 0.99 0.98 0.98 0.98 0.98 0.97 0.97
3/4 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99
5/8 0.99 0.99 0.98 0.98 0.97 0.97 0.97 0.96 0.95 0.95
3/4 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.97 0.97
7/8 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99
5/8 0.99 0.99 0.98 0.97 0.96 0.96 0.96 0.94 0.93 0.92
3/4 1.00 1.00 0.99 0.99 0.99 0.98 0.88 0.98 0.98 0.97
7/8 1.00 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99
5/8 0.99 0.98 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.88
3/4 1.00 1.00 0.99 0.99 0.98 0.98 0.97 0.97 0.96 0.96
7/8 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.98 0.98
3/4 1.00 0.99 0.99 0.98 0.97 0.97 0.96 0.96 0.95 0.94
7/8 1.00 1.00 0.99 0.99 0.99 0.99 0.98 0.98 0.98 0.97
1 1/8 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
3/4 0.99 0.99 0.98 0.97 0.96 0.96 0.95 0.95 0.94 0.93
7/8 1.00 0.99 0.99 0.99 0.98 0.98 0.98 0.98 0.97 0.97
1 1/8 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.99 0.99
3/4 0.99 0.98 0.97 0.96 0.94 0.93 0.93 0.91 0.90 0.89
7/8 1.00 0.99 0.98 0.98 0.97 0.97 0.96 0.94 0.95 0.95
1 1/8 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.99
1Equivalent length is to be used for capacity multiplier reduction
27/8” vapor line is not approved for 2-ton two stage heat pump applications.
37/8” vapor line is not approved for 3-ton two stage heat pump applications over 80 feet.
41-1/8 vapor line is not approved for 4-ton and 5-ton two stage heat pump applications over 80 feet
Capacity Multiplier for Given Length (ft)1
18000
24000
30000
36000
42000
48000
60000
Unit
(Btu)
Suction
Dia. (in)
Table 3-2. Capacity Multipliers
¹ Equivalent length is to be used for capacity multiplier reduction
4. All residential R-410A outdoor units are factory charged for 15 feet of line set.
To calculate the initial amount of extra refrigerant (in ounces):
a. Subtract 15 feet from the total linear (not equivalent) length of actual line set
b. Multiply that value by 0.6 (oz. per foot) of R-410A refrigerant
c. This will be the initial amount of R-410A refrigerant that must be added prior to nal charge adjustment.
All systems must have nal charge adjustment performed as required in Section 1. In most residential applications a minimal
amount of additional refrigerant will be needed to account for the volume in the suction line. For some applications using 1 1/8”
suction line and/or over 150 feet of lineal length, approximately 3 pounds of additional refrigerant may be needed to account for
the suction line.
For a more precise calculation of refrigerant needs use Table 3-3. The additional refrigerant for given line lengths can be found
in Table 3-4.
RA (oz.) = (LA - 15) ft. x 0.6 oz./ft.
Where:
RA = Initial additional refrigerant needed
LA = Actual lineal line set length
17
Additional Refrigerant
(oz. per lineal foot)
3/8” liquid only 0.60
3/8” liquid and 5/8” suction 0.63
3/8” liquid and 3/4" suction 0.67
3/8” liquid and 7/8” suction 0.74
3/8” liquid and 1 1/8” suction 0.78
Line set sizes
25 50 75 100 125 150 175
3/8" liquid line only 15 30 45 60 75 90 105
3/8" liquid line & 5/8" suction line 16 32 47 63 79 95 110
3/8" liquid line & 3/4" suction line 17 34 50 67 84 101 117
3/8" liquid line & 7/8" suction line 18 35 53 70 88 105 123
3/8" liquid line & 1-1/8" suction line 20 39 59 78 98 117 137
Additional lineal line length over 15 feet
Initial refrigerant addition (oz.)
Table 3-3. Additional Refrigerant Per Foot
Table 3-4. Initial Refrigerators for Given Line Length
18
IMPORTANT NOTE: Never operate unit without a lter installed
as dust and lint will build up on internal parts resulting in loss of
eciency, equipment damage and possible re.
An indoor air lter must be used with your comfort system. A
properly maintained lter will keep the indoor coil of your com-
fort system clean. A dirty coil could cause poor operation and/or
severe equipment damage.
Your air lter or lters could be located in your furnace, in a blower
unit, or in “lter grilles” in your ceiling or walls. The installer of your
air conditioner or heat pump can tell you where your lter(s) are,
and how to clean or replace them.
Check your lter(s) at least once a month. When they are dirty,
replace or clean as required. Disposable type lters should be
replaced. Reusable type lters may be cleaned.
You may want to ask your dealer about high eciency lters. High
eciency lters are available in both electronic and non-electronic
types. These lters can do a better job of catching small airborne
particles.
Compressor
The compressor motor is hermetically sealed and does not require
additional oiling.
Motors
Indoor and outdoor fan motors are permanently lubricated and do
not require additional oiling.
Air must be able to ow through the outdoor unit of your comfort
system. Do not construct a fence near the unit or build a deck or
patio over the unit without rst discussing your plans with your
dealer or other qualied servicer. Restricted airow could lead to
poor operation and/or severe equipment damage.
Likewise, it is important to keep the outdoor coil clean. Dirt,
leaves, or debris could also restrict the airow. If cleaning of the
outdoor coil becomes necessary, hire a qualied servicer. Inexpe-
rienced people could easily puncture the tubing in the coil. Even
a small hole in the tubing could eventually cause a large loss of
refrigerant. Loss of refrigerant can cause poor operation and/or
severe equipment damage.
Do not use a condensing unit cover to “protect” the outdoor unit
during the winter, unless you rst discuss it with your dealer. Any
cover used must include “breathable” fabric to avoid moisture
buildup.
• Check the thermostat to conrm that it is properly set.
• Wait 15 minutes. Some devices in the outdoor unit or in
programmable thermostats will prevent compressor operation
for awhile, and then reset automatically. Also, some power
companies will install devices which shut o air conditioners
for several minutes on hot days. If you wait several minutes,
the unit may begin operation on its own.
To avoid the risk of equipment damage or fire, install the
same amperage breaker or fuse as you are replacing. If the
circuit breaker or fuse should open again within thirty days,
contact a qualified servicer to correct the problem.
If you repeatedly reset the breaker or replace the fuse
without having the problem corrected, you run the risk of
severe equipment damage.
• Check the electrical panel for tripped circuit breakers or
failed fuses. Reset the circuit breakers or replace fuses as
necessary.
• Check the disconnect switch near the indoor furnace or blow-
er to conrm that it is closed.
• Check for obstructions on the outdoor unit . Conrm that it
has not been covered on the sides or the top. Remove any
obstruction that can be safely removed. If the unit is covered
with dirt or debris, call a qualied servicer to clean it.
• Check for blockage of the indoor air inlets and outlets. Con-
rm that they are open and have not been blocked by objects
(rugs, curtains or furniture).
• Check the lter. If it is dirty, clean or replace it.
• Listen for any unusual noise(s), other than normal operating
noise, that might be coming from the outdoor unit. If you
hear unusual noise(s) coming from the unit, call a qualied
servicer.
AIR CONDITIONING AND HEAT PUMP HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS
19
Condenser / Heat Pump (including all Inverter)
ELECTRICAL (Outdoor Unit)
Line Voltage (Measure L1 and L2 Voltage) L1 - L2
Secondary Voltage (Measure Transformer Output Voltage) NOT ALL MODELS R - C
Compressor Amps
Condenser Fan Amps
TEMPERATURES (Indoor Unit)
Return Air Temperature (Dry bulb / Wet bulb) DB °F WB °F
DB °F WB °F
Delta T (Difference between Supply and Return Temperatures) DB °F
PRESSURES / TEMPERATURES (Outdoor Unit)
Suction Circuit (Pressure / Suction Line Temperature) PSIG TEMP °F
Liquid Circuit (Pressure / Liquid Temperature) PSIG TEMP °F
Outdoor Air Temperature (Dry bulb / Wet bulb) DB °F WB °F
SUPERHEAT / SUBCOOLING SH SC
Line set length in Feet
Additional Refrigerant Charge Added over Factory Charge (Ounces)
Additional Checks
Check wire routings for any rubbing
Check factory wiring and wire connections.
Check product for proper clearances as noted by installtion instructions
°F to °C formula: (°F - 32) divided by 1.8 = °C °C to °F formula: (°C multiplied by 1.8) + 32 = °F
Model Number
Serial Number
Cooling Supply Air Temperature (Dry bulb / Wet bulb)
20
Daikin Comfort Technologies Manufacturing, L.P.
19001 Kermier Road, Waller, TX 77484
www.goodmanmfg.com
© 2016, 2018-2019, 2021-2022 Daikin Comfort Technologies Manufacturing, L.P.
Daikin Comfort Technologies Manufacturing, L.P., reserves the right to discontinue, or change at any time, specications,
applications or designs without notice or without incurring obligations.
We are very interested in all product comments.
Please ll out the feedback form on one of the following links:
Goodman® Brand Products: (http://www.goodmanmfg.com/about/contact-us).
Amana® Brand Products: (http://www.amana-hac.com/about-us/contact-us).
You can also scan the QR code on the right for the product brand
you purchased to be directed to the feedback page. GOODMAN® BRAND AMANA® BRAND
GOODMAN® BRAND AMANA® BRAND
PRODUCT REGISTRATION
Thank you for your recent purchase. Though not required to get the protection of
the standard warranty, registering your product is a relatively short process, and
entitles you to additional warranty protection, except that failure by California and
Quebec residents to register their product does not diminish their warranty rights.
The duration of warranty coverages in Texas diers in some cases.
For Product Registration, please register as follows:
Goodman® Brand products: (https://www.goodmanmfg.com/product-registration).
Amana® Brand products: (http://www.amana-hac.com/product-registration).
You can also scan the QR code on the right for the product brand
you purchased to be directed to the Product Registration page.
This manual suits for next models
8
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