Goodman GSC13018 User manual

CONDENSINGACUNIT
SINGLE / THREE PHASE AIR CONDITIONERS
INSTALLATION & SERVICE REFERENCE
© 2010-2011 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N:IO-402E Date: December 2011
Fixed Orifice
CAUTION
To prevent personal injury, carefully connect and disconnect
manifold gauge hoses. Escaping liquid refrigerant can cause
burns. Do not vent refrigerant into the atmosphere. Recover all
refrigerant during system repair and before final unit disposal.
1. Purge gauge lines. Connect service gauge manifold to
base-valve service ports. Run system at least 10 min-
utes to allow pressure to stabilize.
2. Temporarily install thermometer on suction (large) line
nearsuctionlineservicevalvewithadequatecontactand
insulatefor best possiblereading.
3. Referto the superheattable providedforproper system
superheat. Add charge to lower superheat or recover
chargeto raise superheat.
4. Disconnect manifold set, installation is complete.
Superheat Formula = Suct. Line Temp. - Sat. Suct. Temp.
Important Safety Instructions
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 com-
plywith allsafetyinformation andinstructionsaccompanying
these symbols. Failure to heed safety information increases
the risk of personal injury, property damage, and/or product
damage.
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.
NOTICE
THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUM
HOLDING CHARGE ONLY. UNIT MUST BE EVACUATED
AND CHARGED PER INSTALLATION INSTRUCTIONS
WITH REFRIGERANT LISTED ON SERIAL RATING PLATE.
NOTICE
UNITS SHIPPED WITH A HOLDING CHARGE ARE
INTENDED FOR COMPONENT REPLACEMENT ONLY ON
EXISTING SYSTEMS, AND NOT INTENDED FOR USE IN
NEW SYSTEMS OR NEWLY CONSTRUCTED HOMES.
NOTICE
UNITS MUST ONLY BE USED AS REPLACEMENT
COMPONENTS FOR PRE-2010 INSTALLED SYSTEMS.
55 57 59 61 63 65 67 69 71
60 10 13 17 20 23 26 29 30 31
65 8 1114161922262729
70 5 8 10 13 15 19 23 24 25
75 ---- ---- 6 9 11 15 20 21 23
80 ---- ---- ---- ---- 7 12 17 18 20
85 ---- ---- ---- ---- ---- 8 13 15 16
90 ---- ---- ---- ---- ---- 5 10 11 13
95 ---- ---- ---- ---- ---- ---- 5 8 10
100 ---- ---- ---- ---- ---- ---- ---- 5 8
105 ---- ---- ---- ---- ---- ---- ---- ---- 5
110 ---- ---- ---- ---- ---- ---- ---- ---- ----
115 ---- ---- ---- ---- ---- ---- ---- ---- ----
Indoor Wet Bulb Temperature, °F
Outdoor
Dry Bulb
Temperature, °F
SYSTEM SUPERHEAT
‡ Approximate charge shown for 15’ of 3/8” liquid line. System charge must be
adjusted per final charge adjustment (Page 7.)
Models Nominal
Charge‡(oz.)
GSC13018 75
GSC13024 77
GSC13030 66
GSC13036 77
GSC13042 95
GSC13048 89
GSC13060 131

2
ONLY individuals meeting the requirements of an
“Entry Level Technician”, at a minimum, as specified
by the may use this information. Attempting
to install or repair this unit without such background
may result in product damage, personal injury, or
death.
Air Conditioning, Heating and Refrigeration
Institute (AHRI)
Important Note to the Owner regarding Prod-
uct Warranty
Your warranty certificate is supplied as a separate document
withtheunit installed byyourcontractor.Read the limitedwar-
ranty certificate carefully to determine what is and is not cov-
ered and keep the warranty certificate in a safe place. If you
are unable to locate the warranty certificate please contact
your installing contractor or contact customer service (877-
254-4729)to obtain acopy.
Shipping Inspection
Always keep the unit upright; laying the unit on its side or top
maycauseequipmentdamage.Shippingdamage,and subse-
quent investigation is the responsibility of the carrier. Verify
the model number, specifications, electrical characteristics,
and accessories are correct prior to installation. The distribu-
torormanufacturerwillnotacceptclaimsfromdealers fortrans-
portationdamage orinstallationof incorrectlyshipped units.
Codes & Regulations
This product is designed and manufactured to comply with
nationalcodes.Installation in accordance with such codes and/
orprevailinglocal codes/regulations istheresponsibilityof the
installer. Themanufacturerassumesnoresponsibilityforequip-
mentinstalled inviolation ofany codes orregulations.
TheUnited States Environmental Protection Agency (EPA)
has issued various regulations regarding the introduc-
tion 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
bemanufacturer approvedandAir Conditioning,Heating and
RefrigerationInstitute (AHRI) matched. NOTE: Installationof
unmatched systems is strongly discouraged.
Operatingthe unit inastructure thatisnot complete (eitheras
partofnew constructionorrenovation)will voidthewarranty.
Installation Clearances
Special consideration must be given to location of the con-
densingunit(s)in regard to structures,obstructions,otherunits,
andany/all other factorsthat may interferewithair circulation.
Wherepossible,thetop of the unitshould becompletely unob-
structed;however, if verticalconditionsrequire placement be-
neath an obstruction there should be a minimum of 60
inches between the top of the unit and the obstruction(s).
Thespecifieddimensionsmeetrequirements for aircirculation
only. Consult all appropriate regulatory codes prior to deter-
miningfinal clearances.
Anotherimportant consideration inselecting a locationfor the
unit(s) is the angle to obstructions. Either side adjacent the
valves can be placed toward the structure provided the side
awayfromthestructuremaintainsminimumserviceclearance.
Cornerinstallations are stronglydiscouraged.
OK!
OK!
AA AAA
A
CC
CCOK!
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
Thisunitcan be locatedatgroundfloor level oron flatroofs.At
groundfloor level, theunitmust be onasolid, levelfoundation
that will not shift or settle. To reduce the possibility of sound
transmission,thefoundation slab shouldnot beincontactwith
or be an integral part of the building foundation. Ensure the
foundation is sufficient to support the unit. A concrete slab
raisedabovegroundlevel provides a suitablebase.
Rooftop Installations
If it is necessary to install this unit on a roof structure, ensure
theroof structurecansupport theweightand thatproper con-
siderationisgiventotheweather-tightintegrityoftheroof.Since
theunitcanvibrateduringoperation,sound vibration transmis-
sion should be considered when installing the unit. Vibration
absorbing pads or springs can be installed between the con-
densingunit legsor frame andthe roof mountingassembly to
reducenoisevibration.
Safe Refrigerant Handling
While these items will not cover every conceivable situation,
theyshould serveas a usefulguide.
To avoid possible injury, explosion or death, practice
safe handling of refrigerants.
WARNING

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, throughly ventilate the
area beforebeginning work.
• Liquid refrigerant can be very cold. To avoid possible
frostbite or blindness, avoid contact and wear gloves
and goggles. If liquidrefrigerant does contact your
skin or eyes, seek medical help immediately.
• Always follow EPA regulations. Never burn refrig-
erant, as poisonous gas will be produced.
WARNING
To avoid possible explosion:
Never apply flame or steam to a refrigerant cylinder.
If you must heat a cylinder for faster charging,
partially immerse it in warm water.
Never fill a cylinder more than 80% full of liquid re-
frigerant.
• Never add anything other than R-22 to an R-22 cy-
linder . The service equipment used must be listed
or certified for the type of refrigerant used.
• Store cylinders in a cool, dry place. Never use a cy-
linder as a platform or a roller.
•
•
To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrig-
erant 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.
WARNING
Refrigerant Lines
The compressor mineral oil for R-22 units is susceptible to
moisture absorption and could cause compressor failure.
Do not leave system open to atmosphere any longer than
necessary for installation.
CAUTION
Useonly refrigerantgrade(dehydratedandsealed)coppertub-
ingto connect thecondensingunit with theindoorevaporator.
Aftercutting the tubing,install plugs tokeep refrigerant tubing
clean and dry prior to and during installation. Tubing should
alwaysbecut square keepingendsroundand free fromburrs.
Cleanthe tubing topreventcontamination.
DoNOTlet refrigerant linescome indirectcontactwith plumb-
ing,ductwork, floorjoists, wallstuds, floors,and walls. When
runningrefrigerantlinesthroughafoundationorwall,openings
should allow for sound and vibration absorbing material to be
placed or installed between tubing and foundation. Any gap
betweenfoundationorwallandrefrigerantlinesshouldbefilled
witha pliable silicon-basedcaulk, RTV oravibration damping
material. Avoid suspending refrigerant tubing from joists and
studs with rigid wire or straps that would come in contact with
thetubing.Use aninsulatedorsuspension typehanger. Keep
both lines separate and always insulate the suction line.
These sizes are recommended for line lengths of 79 feet or
less.For other linesizing option orruns of morethan fifty feet,
refertoRemote Cooling ServiceManual,orTP-106 Long Line
SetApplicationR-22,orcontactyour distributor for assistance.
Cond
Unit
Tons Suct Liq Suct Liq Suct Liq
1 1/2 5/8 1/4 3/4 3/8 3/4 3/8
2 5/81/43/43/83/43/8
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
Line Diameter (In.OD)
RECOMMENDED INTERCONNECTING TUBING(Ft)
0-24 25-49 50-79*
* Lines greater than 79 feet in length or vertical elevation
changes more than 50 feet refer to the Remote Cooling
Service Manual or contact your distributor for assistance.

4
Insulationis necessarytoprevent condensationfrom forming
and dropping from the suction line. Armflex (or satisfactory
equivalent) with 3/8” min. wall thickness is recommended. In
severeconditions (hot, highhumidityareas)1/2”insulationmay
be required. Insulation must be installed in a manner which
protectstubing from damageandcontamination.
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 compat-
ible with the type of refrigerant being used; otherwise, the in-
door coil must be replaced.
Burying Refrigerant Lines
Ifburyingrefrigerantlinescannotbeavoided,usethefollowing
checklist.
1. Insulate liquid and suction lines separately.
2. Enclose all underground portions of the refrigerant lines
inwaterproof material(conduit orpipe) sealingthe ends
wheretubing enters/exitstheenclosure.
3. If the lines must pass under or through a concrete slab,
ensurelines are adequatelyprotected and sealed.
Refrigerant Line Connections
NOTICE
THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUM
HOLDING CHARGE ONLY. UNIT MUST BE EVACUATED
AND CHARGED PER INSTALLATION INSTRUCTIONS
WITH REFRIGERANT LISTED ON SERIAL RATING PLATE.
NOTICE
UNITS SHIPPED WITH A HOLDING CHARGE ARE
INTENDED FOR COMPONENT REPLACEMENT ONLY ON
EXISTING SYSTEMS, AND NOT INTENDED FOR USE IN
NEW SYSTEMS OR NEWLY CONSTRUCTED HOMES.
NOTICE
UNITS MUST ONLY BE USED AS REPLACEMENT
COMPONENTS FOR PRE-2010 INSTALLED SYSTEMS.
NOTE:Holdingchargemustberemovedbeforebrazing. Open
servicevalvesslowly toremoveholdingcharge. Close valves
beforebrazingto preventcontaminants fromenteringsystem.
IMPORTANT
Toavoidoverheatingtheservicevalve,TXVvalve,orfilter
drierwhilebrazing,wrapthecomponent with awet rag, or
use a thermal heat trap compound. Be sure to follow the
manufacturer’s instruction when using the heat trap
compound.Note: RemoveSchradervalves fromservice
valves before brazing tubes to the valves. Use a brazing
alloy of 2% minimum silver content. Do not use flux.
Torch heat required to braze tubes of various sizes is
proportionalto the sizeof thetube.Tubes ofsmallersize
requirelessheat tobringthetube tobrazingtemperature
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
recommendedtoavoidburningtheserialplateor thefinish
on the unit.
1. Theends oftherefrigerant linesmust be cutsquare, de-
burred,cleaned,andberoundandfreefromnicksordents.
Anyothercondition increases thechanceof a refrigerant
leak.
2. “Sweep”therefrigerantlinewithnitrogenorinert gas dur-
ing brazing to prevent the formation of copper-oxide in-
side the refrigerant lines. This may cause a blockage or
failureofthe metering device.
3. After brazing, quench the joints with water or a wet cloth
topreventoverheatingofthe service valve.
4. Ensurethe filter drierpaintfinish is intactafterbrazing. If
thepaintofthesteelfilterdrierhasbeenburnedorchipped,
repaintortreatwitha rust preventative. Thisis especially
important on suction line filter driers which are continu-
ally wet when the unit is operating.
NOTE: Becareful not tokinkor dentrefrigerantlines. Kinked
or dented lines will cause poor performance or compressor
damage.
Do NOT make final refrigerant line connection until plugs are
removedfrom refrigerant tubing.
NOTE: Before brazing, verify indoor piston size by checking
the piston kit chart packaged with indoor unit.
Leak Testing (Nitrogen or Nitrogen-Traced)
To avoid the risk of fire or explosion, never use
oxygen, high pressure air or flammable gases for leak
testing of a refrigeration system.
WARNING
To avoid possible explosion, the line from the
nitrogen cylinder must include a pressure regulator
and a pressure relief valve. The pressure relief valve
must be set to open at no more than 150 psig.
WARNING

5
Pressure test the system using dry nitrogen and soapy water
to locate leaks. If you wish to use a leak detector, charge the
system to 10 psi using the appropriate refrigerant then use
nitrogentofinishchargingthesystemtoworkingpressure then
apply the detector to suspect areas. If leaks are found, repair
them. After repair, repeat the pressure test. If no leaks exist,
proceedto system evacuation.
System Evacuation
Condensingunitliquidand suction valvesare closed. Theunit
is shipped with the valve stems closed and caps installed.
REFRIGERANT UNDER PRESSURE!
Failure to follow proper procedures may cause
property damage, personal injury or death.
WARNING
NOTE: Scrollcompressors should neverbeused toevacuate
or pump down a heat pump or air conditioning system.
NOTICE
THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUM
HOLDING CHARGE ONLY. UNIT MUST BE
EVACUATED AND CHARGED PER INSTALLATION
INSTRUCTIONS WITH REFRIGERANT LISTED ON
SERIAL RATING PLATE.
UNITS SHIPPED WITH A HOLDING CHARGE ARE
INTENDED FOR COMPONENT REPLACEMENT
ONLY ON EXISTING SYSTEMS, AND NOT
INTENDED FOR USE IN NEW SYSTEMS OR NEWLY
CONSTRUCTED HOMES.
NOTICE
NOTICE
UNITS MUST ONLY BE USED AS REPLACEMENT
COMPONENTS FOR PRE-2010 INSTALLED
SYSTEMS.
NOTE:Holdingchargemustbe removed beforebrazing.
Prolonged operation at suction pressures less than 20
psig for more than 5 seconds will result in overheating of
the scrolls and permanent damage to the scroll tips, drive
bearings and internal seal.
CAUTION
1. Openservicevalvesbeforeattachingvacuum pump.
2. Connectthe vacuumpumpwith 250microncapability to
theservicevalves.
3. Evacuate the system to 250 microns or less using suc-
tion and liquid service valves. Using both valves is nec-
essary as some compressors create a mechanical seal
separating the sides of the system.
4. Closepumpvalveandholdvacuum for 10 minutes. Typi-
cally pressure will rise during this period.
•Ifthepressure risesto 1000micronsor less andremains
steady the system is considered leak-free; proceed to
startup.
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0 1 2 3 4 5 6 7 8 9 10
LEAK(S)
PRESENT
MINUTES
VACUUM IN MICRONS
CONDENSIBLES OR SMALL
LEAK PRESENT
NO LEAKS
NO CONDENSIBLES
• 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.
Returnto step 2:Ifthe sameresultis encountered check
forleaksas previously indicatedand repairasnecessary
thenrepeatevacuation.
•If pressure rises above 2000 microns, a leak is present.
Checkforleaksaspreviously indicated and repair as nec-
essarythenrepeat evacuation.
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.
WARNING
To avoid the risk of fire or equipment damage, use
copper conductors.
WARNING
NOTICE
Units with reciprocating compressors and non-bleed TXV’s
require a Hard Start Kit.
The condensing unit rating plate lists pertinent electrical data
necessaryforproperelectricalservice and overcurrentprotec-
tion. 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
correctwire gauge andlength.

6
System Start Up
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.
CAUTION
Whenopeningvalveswith retainers, open each valve only until
the top of the stem is 1/8” from the retainer. To avoid loss of
refrigerant,DONOTapplypressuretotheretainer.Whenopen-
ingvalves without aretainerremove service valvecapand in-
sert 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:Theseare not back-seatingvalves.It is notnecessary
to force the stem tightly against the rolled lip.
Theservicevalvecap is the secondaryseal for thevalves and
mustbe properly tightenedtoprevent leaks. Makesurecap is
clean and apply refrigerant oil to threads and sealing surface
oninsideofcap.Tightencapfinger-tight and then tightenaddi-
tional1/6of aturn (1wrenchflat), or tothefollowing specifica-
tion, 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.
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.
CAUTION
NOTICE
REFRIGERANT MUST BE ADDED TO THE
SYSTEM AFTER EVACUATION IS COMPLETE.
REFRIGERANT UNDER PRESSURE!
• Do not overcharge system with refrigerant.
• Do not operate unit in a vacuum or at negative pres-
sure.
Failure to follow proper procedures may cause
property damage, personal injury or death.
WARNING
1. Addrefrigerant amount shownin table belowfor the unit
beinginstalled.
Localcodesoftenrequire a disconnect switchlocated nearthe
unit; do not install the switch on the unit. Refer to the installa-
tioninstructionssuppliedwiththeindoorfurnace/airhandlerfor
specificwiringconnectionsandindoorunitconfiguration. Like-
wise, consult the instructions packaged with the thermostat
formountingand location information.
Overcurrent Protection
Thefollowing overcurrent protectiondevicesare approved for
use.
• Timedelay fuses
• HACRtype circuitbreakers
These devices have sufficient time delay to permit the motor-
compressor to start and accelerate its load.
Three Phase Compressor Rotation
Use care when handling scroll compressors. Dome temp-
eratures could be hot.
CAUTION
Three phase compressors are power phase dependent and
can rotate in either direction.
Verifyproperrotationforthreephasecompressorsbyensuring
thesuctionpressuredropsand discharge pressurerises when
the compressor is energized. NOTE: When operated in re-
verse,a threephasescroll compressorsis noisier andits cur-
rentdraw substantially reducedcomparedto markedvalues.
To correct, disconnect power and switch any two leads at the
unitcontactorandre-observe.
High Voltage Connections
Routepowersupplyandgroundwiresthroughthehighvoltage
portand terminate inaccordance with thewiring diagram pro-
videdinsidethe control panelcover.
Low Voltage Connections
Condensingunit controlwiringrequires24Voltminimum,25VA
servicefromtheindoortransformer. Routecontrolwiresthrough
thelow voltageportand terminatein accordance withthe wir-
ingdiagramprovided inside thecontrolpanelcover.
Single-Stage Thermostat
with Two Low Voltage Wires to Remote

7
Models Nominal
Charge‡(oz.)
GSC13018 75
GSC13024 77
GSC13030 66
GSC13036 77
GSC13042 95
GSC13048 89
GSC13060 131
‡ Approximate charge shown for 15’ of 3/8” liquid line. System charge must be
adjusted per final charge adjustment (Page 7.)
2. Set thermostatto call forcooling. Check indoor andout-
door fan operation and allow system to stabilize for 10
minutes for fixed orifices and 20 minutes for expansion
valves.
Charge Verification
REFRIGERANT UNDER PRESSURE!
• Do not overcharge system with refrigerant.
• Do not operate unit in a vacuum or at negative pres-
sure.
Failure to follow proper procedures may cause
property damage, personal injury or death.
WARNING
Use refrigerant certified standards. Use of used
refrigerant may cause compressor damage that is not
covered under warranty. Most portable machines cannot
clean used refrigerant to meet tandards.
toAHRI
AHRI s
CAUTION
NOTICE
Violation of EPA regulations may result in fines or other
penalties.
Operating the compressor with the suction valve closed
may cause serious compressor damage.
CAUTION
Final ChargeAdjustment
Theoutdoortemperaturemustbe60°Forhigher. Set the room
thermostat to COOL, fan switch to AUTO, and set the tem-
peraturecontrolwell below roomtemperature.
After system has stabilized per startup instructions, check
subcoolingand superheat asdetailedin thefollowingsection.
Fixed Orifice
CAUTION
To prevent personal injury, carefully connect and disconnect
manifold gauge hoses. Escaping liquid refrigerant can cause
burns. Do not vent refrigerant into the atmosphere. Recover
all refrigerant during system repair and before final unit
disposal.
1. Purge gauge lines. Connect service gauge manifold to
base-valveserviceports.Runsystem at least 10minutes
to allow pressure to stabilize.
2. Temporarily install thermometer on suction (large) line
nearsuctionlineservicevalve with adequate contactand
insulatefor best possiblereading.
3. Refer to the superheat table provided for proper system
superheat. Add charge to lower superheat or recover
chargeto raise superheat.
4. Disconnect manifold set, installation is complete.
Superheat Formula = Suct. Line Temp. - Sat. Suct. Temp.
Expansion Valve System
1. Purge gauge lines. Connect service gauge manifold
tobase-valve service ports. Run system at least 10 min-
utes to allow pressure to stabilize.
2. Temporarilyinstallthermometeronliquid(small)linenear
liquid line service valve with adequate contact and insu-
latefor bestpossiblereading.
3.Check subcoolingand superheat. Systemswith TXVap-
plicationshould have asubcoolingof 7 ±2ºF andsuper-
heat of 8 ± 1 ºF.
a. Ifsubcooling and superheatare low, adjustTXVto
8 ± 1 ºF superheat, then check subcooling.
NOTE: To adjust superheat, turn the valve stem clock-
wisetoincreaseandcounterclockwisetodecrease.
b. Ifsubcoolingislowandsuperheatishigh,addcharge
to raise subcooling to 7 ± 2ºF then check super-
heat.
c. If subcooling and superheat are high, adjust TXV
valveto 8 ±1 ºF superheat,then check subcooling.
d. If subcooling is high and superheat is low, adjust
TXVvalveto8±1ºFsuperheatandremove charge
to lower the subcooling to 7 ± 2ºF.
NOTE: DoNOTadjustthechargebasedonsuction pres-
sureunless thereis agross 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 caps finger-tight.

8
SUCTION PRESSURE SATURATED SUCTION
TEMPERATURE ºF
PSIG R-22
50 26
52 28
54 29
56 31
58 32
60 34
62 35
64 37
66 38
68 40
70 41
72 42
74 44
76 45
78 46
80 48
85 50
90 53
95 56
100 59
110 64
120 69
130 73
140 78
150 83
160 86
170 90
SATURATED SUCTION PRESSURE
TEMPERATURE CHART
LIQUID PRESSURE SATURATED LIQUID
TEMPERATURE ºF
PSIG R-22
200 101
210 105
220 108
225 110
235 113
245 116
255 119
265 121
275 124
285 127
295 130
305 133
325 137
355 144
375 148
405 155
415 157
425 n/a
435 n/a
445 n/a
475 n/a
500 n/a
525 n/a
550 n/a
575 n/a
600 n/a
625 n/a
SATURATED LIQUID PRESSURE
TEMPERATURE CHART
55 57 59 61 63 65 67 69 71
60 10 13 17 20 23 26 29 30 31
65 8 1114161922262729
70 5 8 10 13 15 19 23 24 25
75 --------6 9 1115202123
80 ---- ---- ---- ---- 7 12 17 18 20
85 ---- ---- ---- ---- ---- 8 13 15 16
90 ---- ---- ---- ---- ---- 5 10 11 13
95 ---- ---- ---- ---- ---- ---- 5 8 10
100 ---------------------------- 5 8
105 -------------------------------- 5
110 ------------------------------------
115 ------------------------------------
Indoor Wet Bulb Temperature, °F
Outdoor
DryBulb
Temperature, °F
SYSTEM SUPERHEAT

9
Troubleshooting Information
For detailed service information refer to the Remote Condensing Unit Service manual.
Complaint Unsatisfactory
Cooling
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
SYMPTOM
System will not start Compressor will not start - fan runs Compressor and Condenser 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 Too cool and then too warm Not cool enough on warm days Certain areas to cool others to warm Compressor is noisy Low suction pressure Low head pressure High suction pressure High head pressure
Test Method
Remedy
Power Failure •Test Volta
g
e
Blown Fuse ••• Impact Fuse Size & Type
Loose Connection • ••• Ins
p
ect Connection - Ti
g
hten
Shorted or Broken Wires •••••• Test Circuits with Ohmmeter
Open Overload •• Test Continuit
y
of Overloads
Faulty Thermostat ••• • Test Continuit
y
of Thermostat and Wirin
g
Faulty Transformer •• Check Control Circuit with Voltmeter
Shorted or Open Capacitor • ••• Test Ca
p
acitor
Internal Com
p
ressor Overload O
p
en •Test Continuit
y
of Overload
Shorted or Grounded Compressor •• Test Motor Windin
g
s
Compressor Stuck •• Use Test Cord
Faulty Compressor Contactor ••• • Test Continuit
y
of Coil and Contacts
Faulty Fan Relay •Test Continuit
y
of Coil and Contacts
Open Control Circuit Test Control Circuit with Voltmeter
Low Voltage ••• Test Volta
g
e
Faulty Evaporator Fan Motor •• Re
p
air or Re
p
lace
Shorted or Grounded Fan Motor •• • Test Motor Windin
g
s
Improper Cooling Anticipator •Check Resistance of Antici
p
ator
Shortage or Refrigerant •• •• Test For Leaks, Add Refrigerant
Restricted Liquid Line •• •• Re
p
lace Restricted Part
Undersized Liquid Line •• • Replace Line
Undersized Suction Line •Re
p
lace Line
Not Enough Air across Indoor Coil •••• Speed Blower, Check Duct Static Pressure
Too Much Air across Indoor Coil •Reduce Blower S
p
eed
Overcharge of Refrigerant •• • •• Recover Part of Charge
Noncondensibles •• • Recover Char
g
e, Evacuate, Rechar
g
e
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 •• Read
j
ust Air Volume Dam
p
ers
System Undersized •• Refigure Cooling Load
Broken Internal Parts •Re
p
lace Com
p
ressor
Broken Valves •Test Compressor Efficiency
Inefficient Compressor ••• Test Com
p
ressor Efficienc
y
High Pressure Control Open •Reset and Test Control
Unbalanced Power, 3PH ••• Test Volta
g
e
Wrong Type Expansion Valve •• • Replace Valve
Expansion Valve Restricted ••• • •• Re
p
lace Valve
Oversized Expansion Valve •• Replace Valve
Undersized Expansion Valve ••• • • Re
p
lace Valve
Expansion Valve Bulb Loose •• Ti
g
hten Bulb Bracket
Inoperative Expansion Valve •• • Check Valve O
p
eration
Loose Hold-down Bolts •Tighten Bolts
No Cooling System Operating
Pressures
NOTICE
UNITS WITH ROTARY OR RECIPROCATING COMPRESSORS AND NON-BLEED
TXV’S REQUIRE A HARD START KIT.

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NOTE: SPECIFICATIONSANDPERFORMANCEDATALISTEDHEREINARESUBJECTTOCHANGEWITHOUTNOTICE
©2010 - 2011 Goodman Manufacturing Company, L.P.
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Quality Makes the Difference!
All of our systems are designed and manufactured with the same high quality standards regardless of size or effi-
ciency. We have designed these units to significantly reduce the most frequent causes of product failure. They are
simple to service and forgiving to operate. We use quality materials and components. Finally, every unit is run tested
before it leaves the factory. That’s why we know. . .There’s No Better Quality.
Visit our website at www.goodmanmfg.com or www.amana-hac.com for information on:
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