Goodman AEPT User manual

CUS
®
Made in the USA by:
Goodman Manufacturing Company, L.P.
IO-230F 2550 North Loop West, Suite 400 - Houston, Texas 77092 08/04
www.goodmanmfg.com or www.amana-hac.com
©2003-2004 Goodman Manufacturing Company, L.P.
INSTALLATION & OPERATING
INSTRUCTIONS FOR
ARUF, ARPF, ARPT and AEPT
SERIES AIR HANDLER

2
IO-230F 08/04
INDEX
INTRODUCTION ....................................................................2
REPLACEMENT PARTS ........................................................2
SAFETY INSTRUCTIONS ......................................................2
WARNINGS ............................................................................2
MODEL IDENTIFICATION ......................................................3
PRODUCT DESCRIPTION.....................................................3
UNIT INSPECTION.................................................................4
ELECTRIC HEAT....................................................................4
HKR INSTALLATION ..............................................................5
LOCATION ..............................................................................5
DUCTWORK...........................................................................5
ELECTRICAL SUPPLYWIRE AND MOP...............................5
REFRIGERANT LINES...........................................................6
AEPT MOTOR ORIENTATION ...............................................8
CONVERSION TO DOWNFLOW ...........................................8
CONVERSION TO HORIZONTAL ..........................................9
CONDENSATE REMOVAL .....................................................9
ACHIEVING 2% LOW LEAKAGE RATE ..............................10
ARUF/ARPF MOTOR ...........................................................10
AEPT MOTOR.......................................................................10
THERMOSTATWIRING DIAGRAMS ................................... 11
THERMOSTATS....................................................................13
INTRODUCTION
Checking Product Received
Upon receiving the product, inspect it for damage from
shipment.Claimsfordamage,eithershippingorconcealed,
should be filed immediately with the shipping company.
Check the product to determine if it is correct. In the event
an incorrect product is shipped, it must be returned to the
supplier and must NOT be installed. The manufacturer
assumes no responsibility for installation of incorrectly
shipped products.
Before Beginning Installation
Carefully read all instructions for the installation prior to
installing product. Make sure each step or procedure is
understood and any special considerations are taken into
account before starting installation. Assemble all tools,
hardwareand supplies neededtocompletethe installation.
Some items may need to be purchased locally. Make sure
everything needed to install the product is on hand before
starting.
REPLACEMENT PARTS
Ordering Parts
When reporting shortages or damages, or ordering repair
parts,give the completeproductmodeland serial numbers
as stamped on the product. Replacement parts for this
product are available through your contractor or local
distributor. For the location of your nearest distributor
consult the white business pages, the yellow page section
of the local telephone book, or contact the following:
SERVICE PARTS DEPARTMENT
GOODMAN MANUFACTURING COMPANY, L.P.
2550 NORTH LOOP WEST, SUITE 400
HOUSTON, TEXAS 77092
(713) 861 – 2500
IMPORTANT SAFETY INSTRUCTIONS
Recognize Safety Symbols, Words, and Labels
The following symbols and labels are used throughout this
manual to indicate immediate or potential hazards. It is the
owner’s responsibility to read and comply with all safety
informationand instructions accompanyingthesesymbols.
Failure to heed safety information increases the risk of
serious personal injury or death, property damage and/or
product damage.
DANGER
IMMEDIATE HAZARDS WHICH WILL RESULTIN
PROPERTY DAMAGE, PRODUCT DAMAGE, SEVERE
PERSONAL INJURYOR DEATH.
WARNING
HAZARDS OR UNSAFE PRACTICES COULD RESULTIN
PROPERTY DAMAGE, PRODUCT DAMAGE, SEVERE
PERSONAL INJURYOR DEATH.
CAUTION
HAZARDS OR UNSAFE PRACTICES WHICH MAY
RESULTIN PROPERTY DAMAGE, PRODUCT DAMAGE,
PERSONAL INJURYOR DEATH.
WARNING
THE UNIT MUST HAVE AN UNINTERRUPTED,
UNBROKEN ELECTRICAL GROUND TO MINIMIZE THE
POSSIBILITYOF PERSONALINJURYIFAN ELECTRICAL
FAULTSHOULD OCCUR. THE ELECTRICAL GROUND
CIRCUIT MAYCONSIST OF AN APPROPRIATELYSIZED
ELECTRICAL WIRE CONNECTING THE GROUND LUG
IN THE UNIT CONTROL BOX TO THE BUILDING
ELECTRICAL SERVICE PANEL. OTHER METHODS OF
GROUNDING ARE PERMITTED IF PERFORMED IN
ACCORDANCE WITHTHE “NATIONALELECTRIC CODE”
(NEC)/”AMERICAN NATIONAL STANDARDS INSTITUTE”
(ANSI)/”NATIONAL FIRE PROTECTION ASSOCIATION”
(NFPA) 70 AND LOCAL/STATE CODES. IN CANADA,
ELECTRICAL GROUNDING IS TO BE IN ACCORDANCE
WITH THE CANADIAN ELECTRIC CODE CSA C22.1.
FAILURE TO OBSERVE THISWARNING CAN RESULTIN
ELECTRICAL SHOCK THATCAN CAUSE PERSONAL
INJURY.
WARNING
BEFORE SERVICINGORINSTALLING THIS EQUIPMENT,
THE ELECTRICAL POWER TO THIS UNIT MUST BE IN
THE “OFF” POSITION. CAUTION, MORE THAN ONE
DISCONNECT MAYEXIST. FAILURETO OBSERVE THIS
WARNING MAYRESULTIN AN ELECTRICAL SHOCK
THATCAN CAUSE PERSONAL INJURY.
WARNING
DUE TO HIGH SYSTEM PRESSURE AND ELECTRICAL
SHOCK POTENTIAL, INSTALLING AND THE SERVICING
AIR CONDITIONING SYSTEMS CAN BE HAZARDOUS.
ONLYTRAINED AND QUALIFIED PERSONNEL ARE
PERMITTEDTOINSTALLORSERVICETHISEQUIPMENT.
OBSERVEALLWARNINGSCONTAINED IN THIS MANUAL
AND LABELS/TAGS ATTACHED TO THE EQUIPMENT.

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IO-230F 08/04
WARNING
THIS PRODUCT IS FACTORYSHIPPED FOR USE WITH
A208-230/1/60 ELECTRICAL POWER SUPPLY. THISAIR
HANDLER MUST NOT BE RECONFIGUREDTO OPERATE
WITH ANY OTHER POWER SUPPLY.
WARNING
WHEN INSTALLING OR SERVICING THIS EQUIPMENT,
SAFETY CLOTHING, INCLUDING HAND AND EYE
PROTECTION, IS STRONGLYADVISED. IF INSTALLING
THIS EQUIPMENT IN AN AREA THATHAS SPECIAL
SAFETYREQUIREMENTS(HARD HATS ETC.), OBSERVE
THESEREQUIREMENTS. TOPROTECTTHEUNITWHEN
WELDING CLOSE TO THE PAINTED SURFACES, THE
USE OFAQUENCHING CLOTH IS STRONGLYADVISED
TO PREVENT SCORCHING OR MARRING OF THE
EQUIPMENT FINISH.
WARNING
THE UNITED STATES ENVIRONMENTAL PROTECTION
AGENCY (“EPA”) HAS ISSUED VARIOUS REGULATIONS
REGARDING THE INTRODUCTION AND DISPOSAL OF
REFRIGERANTS INTRODUCED INTO THIS UNIT.
FAILURETOFOLLOWTHESE REGULATIONSMAYHARM
THE ENVIRONMENT AND CAN LEAD TO THE
IMPOSITION OF SUBSTANTIAL FINES. THESE
REGULATIONS MAYVARYDUE TO THE PASSAGE OF
LAWS. ACERTIFIED TECHNICIAN MUST PERFORMTHE
INSTALLATION AND SERVICE OF THIS PRODUCT.
SHOULD QUESTIONS ARISE, CONTACT YOUR LOCAL
EPAOFFICE.
CARBON MONOXIDE POISONING HAZARD
-
Special Warning for Installation of Furnace or Air Handling Units in
Enclosed Areas such as Garages, Utility Rooms or Parking Areas
Carbon monoxide producing devices (such as an automobile, space
heater, gas water heater, etc.) should not be operated in enclosed areas
such as unventilated garages, utility rooms or parking areas because of
the danger of carbon monoxide (CO) poisoning resulting from the exhaust
emissions. If a furnace or air handler is installed in an enclosed area such
as a garage, utility room or parking area and a carbon monoxide producing
device is operated therein, there must be adequate, direct outside
ventilation.
This ventilation is necessary to avoid the danger of CO poisoning which
can occur if a carbon monoxide producing device continues to operate in
the enclosed area. Carbon monoxide emissions can be (re)circulated
throughout the structure if the furnace or air handler is operating in any
mode.
CO can cause serious illness including permanent brain damage or death.
B10259-216
MODEL IDENTIFICATION
Model Series
AE = Air Handler with ECM™ Motor
AR = Air Handler with PSC Motor
Cabinet Finish
P = Painted
U = Unpainted Galvanized Steel
Refrigerant Metering
T = TXV
F = Flowrater
Normal Capacity
018 = 1½ Ton
024 = 2 Ton
030-032 = 2½ Ton
036 = 3 Ton
042 = 3½ Ton
048 & 049 = 4 Ton
060 & 061 = 5 Ton
Factory Installed Heat
00 = None
Feature
A = Initial Release
B = Downflow
C = Factory Sealed
Electrical
Supply
208 - 230/1/60
AR UF024 00 A1A
Revision
PRODUCT DESCRIPTION
Withthe exceptionof theARPF024-00B-1,ARPF036-00B-
1,ARPF048-00B-1 and the ARPF060-00B-1 (refered to in
this manual as the “B” series), these air handlers are
designed to be installed in the upflow, downflow, and
horizontal orientations.
The “B” series air handlers are factory configured to be
installed in the downflow orientation. DO NOT INSTALL
THE “B” SERIES IN THE UPFLOW OR HORIZONTAL
POSITION.
The “C” series airhandler is designed for low leak
applications. These air handlers are designed for indoor
use only and must only be installed in a weatherized area.
DO NOT INSTALL OUTDOORS. Typical residential
installations for this product include alcoves, basements,
attics, crawl spaces, and closets. Other nonresidential
applications are acceptable provided they comply with this
manual and local/state codes.

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IO-230F 08/04
When matched with a Goodman or Amana brand
condenseror heat pump,anARI certified rating is available
for many combinations.
TheAEPT models are equipped with an ECMTM motor. An
ECMTM motor is more efficient than a standard PSC motor
andoffersfeatures such assoft-start, controlled off-delays,
andconstant CFM. Additional features and theassociated
controls are discussed later in this manual.
Electricheatisavailableforallmodels.Thisisanaccessory
and is not provided with the equipment. Use only the
electric heat kits identified in the “Electric Heat” section of
this manual.
These air handlers are intended for use with a room
thermostat. This thermostat is not supplied with this
equipment. Only thermostats that use 24 VAC operating
voltage can be used.
UNIT INSPECTION
Upon delivery, inspect the unit for damage. Any damage
must be reported immediately to the carrier. Do not install
this equipment if it is determined that the integrity or safety
has been compromised by freight damage.
Using the table “Model Identification” section, check the
equipmentmodelnumbertoensuretheunitisappropriately
sized for the condenser unit.
If an incorrect unit is supplied, it must not be installed and
it is to be returned to the supplier. The manufacturer
assumes no responsibility for the installation of incorrectly
delivered units.
The evaporator coil contains a high-pressure inert gas
holding charge.
ELECTRIC HEAT
WARNING
REFERTOTHE “INSTALLING ELECTRICHEAT” SECTION
OF THIS MANUALAND THE INSTRUCTIONS PROVIDED
WITHTHEHEATKITFORTHE CORRECTINSTALLATION
PROCEDURE.
WARNING
THE ELECTRICAL CHARACTERISTICS OF THE AIR
HANDLER, THE ELECTRIC HEATKIT,AND THE SUPPLY
POWER MUSTAGREE, UNLESS USING HKR3(3PHASE)
SERIES HEATKIT. THISAIR HANDLER DOES NOTHAVE
FACTORYINSTALLED ELECTRIC HEAT. ELECTRIC
HEATISAVAILABLEASANACCESSORY. IF INSTALLING
THIS OPTION,THE ONLYHEATKITSTHATCAN BE USED
ARE THE HKR SERIES AS INDICATED BELOW: NOTE:
THEAMANABRANDEHK, ECB, EDB,AND EDK KITSARE
NOT APPROVED FOR USE WITH THESE AIR
HANDLERS.
Theheating mode temperature rise is dependent uponthe
system airflow, the supply voltage, and the heat kit size
(kW) selected. Use Tables 1-3 to determine the
temperature rise (oF).
3 5 6 8 10 15 20 21
600 18 28 35 41
800 13 21 26 31 42
1000 11 17 21 25 34 50
1200 914 18 21 28 42 56 62
1400 812 15 18 24 36 48 53
1600 710 13 15 21 31 42 46
1800 6 9 12 14 19 28 37 41
2000 5 8 11 12 17 25 34 37
HEAT KIT NOMINAL kW
CFM
Table 1
230/1/60 Supply Voltage - Temperature Rise Table °F
3
5
6
8
10
15
20
21
600 17 27 34 39
800 13 20 25 30 40
1000 10 16 20 24 32 48
1200 8 13 17 20 27 40 53 59
1400 7 11 14 17 23 34 46 51
1600 6 10 13 15 20 30 40 44
1800 6 9 11 13 18 27 36 39
2000 5 8 10 12 16 24 32 35
CFM
HEAT KIT NOMINAL kW
Table 2
220/1/60 Supply Voltage - Temperature Rise Table °F
3
5
6
8
10
15
20
21
600 16 25 32 37
800 12 19 24 38 38
1000 10 15 19 22 30 46
1200 8 13 16 19 25 38 51 56
1400 7 11 14 16 22 33 43 48
1600 6 9 12 14 19 28 38 42
1800 5 8 11 12 17 25 34 37
2000 5 8 10 11 15 23 30 34
CFM
HEAT KIT NOMINAL kW
Table 3
208/1/60 Supply Voltage - Temperature Rise Table °F
Note: For installations not indicated above the following
formula is to be used:
TR = (kW x 3412) x (Voltage Correction) x 1.08 / CFM
Where: TR = Temperature Rise
KW = Heater Kit Actual kW
3412 = Btu per kW
Voltage Correction =.96 (230 Supply Volts)
=.92 (220 Supply Volts)
=.87 (208 Supply Volts)
1.08 = Constant
CFM = Measured Airflow
NOTE: The Temperature Rise Tables can also be used to
determine the air handler airflow delivery. When using
these tables for this purpose set the room thermostat to

5
IO-230F 08/04
maximum heat and allow the system to reach steady state
conditions. Insert two thermometers, one in the return air
andoneinthesupply air. The temperature rise is thesupply
air temperature minus the room air temperature.
Use HKR specification sheets to determine the HKR
available for a given air handler.
HKR INSTALLATION
Follow instructions listed in Installation and Operating
Instructions shipped with the heat kit.
LOCATION
WARNING
THIS AIR HANDLER IS DESIGNED FOR INDOOR
INSTALLATION ONLY. DO NOT INSTALL OUTDOORS.
When installing this air handler consideration to minimize
the length of refrigerant tubing is to be given. Do not install
the air handler in a location either above or below the
condenser that violates the instructions provided with the
condenser. The clearance from a combustible surface to
the unit is 0". However, service clearance is to take
precedence. Allow a minimum of 24" in front of the unit for
service clearance. When installing in an area directly over
a finished ceiling (such as an attic), an emergency drain
pan is required directly under the unit. See local and state
codes for additional requirements. When installing this unit
in an area that may become wet, elevate the unit with a
sturdy, non-porous material. In installations that may lead
to physical damage (i.e. a garage) it is advised to install a
protective barrier to prevent such damage.
DUCTWORK
This air handler is designed for a complete supply and
return ductwork system.
CAUTION
DO NOT OPERATE THIS PRODUCT WITHOUT ALL
DUCTWORK ATTACHED.
To ensure correct system performance, the ductwork is to
be sized to accommodate 375-425 CFM per ton of cooling
with the static pressure not to exceed .5" WC. Inadequate
ductwork that restricts airflow can result in improper
performance and compressor or heater failure. Ductwork
is to be constructed in a manner that limits restrictions and
maintains suitable air velocity. Ductwork is to be sealed to
the unit in a manner that will prevent leakage.
Return Ductwork. DO NOT TERMINATE THE RETURN
DUCTWORK IN AN AREA THAT CAN INTRODUCE
TOXIC, OR OBJECTIONABLE FUMES/ODORS INTO
THEDUCTWORK. The return ductworkistobeintroduced
into the air handler bottom (upflow configuration).
Return Air Filters. Each installation must include a return
air filter. This filtering may be performed at the air handler
or externally such as a return air filter grille. Air handlers
mounted in the downflow orientation, including “B” series,
require external filtering. A washable filter is available as
an accessory. To ensure optimum performance frequent
filtercleaning isadvised.Refer to Table 5forthe appropriate
filter.
ARUFor
ARPT
model
ARPF
model AEPT model Filter Number Qty Required
018-032 024, 036 n/a FIL 18-32 1
036-042 n/a 30 FIL 36-42 1
048-061
048, 060
036, 060
FIL 48-61
1
Table 5
ELECTRICAL SUPPLYWIRE AND MOP
WARNING
TOAVOIDTHE RISK OF FIRE OR EQUIPMENT DAMAGE,
USE ONLYCOPPER CONDUCTORS. BEFORE
SERVICING OR INSTALLING THIS EQUIPMENT, THE
ELECTRICAL POWER TO THIS UNIT MUST BE IN THE
“OFF” POSITION AND ALL POWER SUPPLIES
DISCONNECTED.
CAUTION
MORE THAN ONE DISCONNECT MAYEXIST. FAILURE
TO OBSERVE THIS WARNING MAYRESULTIN AN
ELECTRICAL SHOCK THATCAN CAUSE PERSONAL
INJURYOR DEATH.
WARNING
THE UNIT MUST HAVE AN UNINTERRUPTED,
UNBROKEN ELECTRICAL GROUND TO MINIMIZE THE
POSSIBILITYOF PERSONALINJURYIFAN ELECTRICAL
FAULTSHOULD OCCUR. THE ELECTRICAL GROUND
CIRCUIT MAYCONSIST OF AN APPROPRIATELYSIZED
ELECTRICAL WIRE CONNECTING THE GROUND LUG
IN THE UNIT AND CONTROL BOX WIRE TO THE
BUILDING’S ELECTRICAL SERVICE PANEL. OTHER
METHODS OF GROUNDING ARE PERMITTED IF
PERFORMED IN ACCORDANCE WITH THE “NATIONAL
ELECTRIC CODE” (NEC)/”AMERICAN NATIONAL
STANDARDS INSTITUTE” (ANSI)/”NATIONAL FIRE
PROTECTION ASSOCIATION” (NFPA) 70 AND LOCAL/
STATE CODES. IN CANADA, ELECTRICALGROUNDING
IS TO BE IN ACCORDANCE WITH THE CANADIAN
ELECTRIC CODE CSA C22.1. FAILURE TO OBSERVE
THIS WARNING CAN RESULTIN ELECTRICAL SHOCK
THATCAN CAUSE PERSONAL INJURYOR DEATH.
Inspection of the Building Electrical Service
Thisunit is designed for single-phaseelectrical supply. DO
NOT OPERATE ONA THREE-PHASE POWER SUPPLY.
Measure the power supply to the unit. The supply voltage
must be in agreement with the unit nameplate power
requirements and within the range shown in Table 6.
Nominal Input Minimum Voltage Maximum Voltage
208/230 187 253
Table 6

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IO-230F 08/04
Wire Sizing
Wire size is important to the operation of your equipment.
Usethe following check list when selecting theappropriate
wire size for your unit.
•Wire size must carry the Minimum Circuit Ampacity
(MCA).
Refer to the NEC (USA) or CSA (Canada) for wire
sizing. TheunitMCAfor theairhandlerandtheoptional
electric heat kit can be found on the unit Series and
Rating Plate.
•Wire size allows for no more than a 2% voltage drop
from the building breaker/fuse panel to the unit.
Referto the latest edition of the National Electric Code
or in Canada the Canadian Electric Code when
determining the correct wire size. The following table
shows the current carrying capabilities for copper
conductors rated at 75oC with a 2% voltage drop. Use
the Table 7 to determine the voltage drop per foot of
various conductors.
10 15 20 25 30 35 40 45
14 75 50 37 NR NR NR NR NR
12 118 79 59 47 NR NR NR NR
10 188 125 95 75 63 54 NR NR
8301 201 150 120 100 86 75 68
6471 314 235 188 157 134 118 110
*Based on NEC 1996
Maximum Allowable Length in Feet
to Limit Voltage Drop to 2%*
Minimum Circuit Ampacity (MCA)
Wire Size
(AWG)
Table 7
Maximum Overcurrent Protection (MOP)
Every installation must include an NEC (USA) or CEC
(Canada) approved overcurrent protection device. Also,
check with local or state codes for any special regional
requirements.
This protection can be in the form of fusing or HACR style
circuit breakers. The Series and Rating Plate can be used
asa guidefor selectingthe MAXIMUMovercurrent device.
NOTE: Fuses or circuit breakers are to be sized larger
than the equipment MCA but not to exceed the MOP.
Electrical Connections – Supply Voltage
USE COPPER CONDUCTORS ONLY.
A knockout is provided on the air handler top panel or side
to allow for the entry of the supply voltage conductors. If
the knockouts on the cabinet sides are used for electrical
conduit, an adapter ring must be used in order to meet
UL1995 safety requirements. An NEC or CEC approved
strain relief is to be used at this entry point. The wire is to
be sized in accordance with the “Electrical Wire and MOP”
section of this manual. Some areas require the supply
wire to be enclosed in conduit. Consult your local codes.
Air Handler Only (Non-Heat Kit Models)
Thebuildingsupplyconnectsto the stripped black and white
wires contained in the air handler electrical compartment
cavity. Aground screw is also contained in this area. Attach
the supply wires to the air handler conductors as shown in
theunit wiring diagramusing appropriately sizedsolderless
connectors or other NEC or CEC approved means.
Air Handler With Non-Circuit Breaker Heat Kits
A terminal block is provided with the HKR kit to attach the
supply and air handler connections. Follow the HKR
InstallationManual and wiring diagram for complete wiring
details.
Air Handler With Heat Kits Containing a Circuit Breaker.
HKR models with a “C” suffix contain a circuit breaker(s).
The air handler has a plastic cover on the access panel
that will require either one or both sections to be removed
to allow the heat kit circuit breaker(s) to be installed. See
the HKR Installation Instructions for further details. The air
handler wires and supply wires are installed directly onto
theHKR circuit breaker(s)as shown in the HKR Installation
Manual and wiring diagram.
Low Voltage Connections
Severalcombinationsof low voltage schemesareavailable,
depending on the presence of a heat kit and whether the
heat kit is single-stage or multi-staging. The low voltage
connections are determined by whether the outdoor unit is
a condenser or heat pump. The 24V-control voltage
connects the air handler to the room thermostat and
condenser. Low voltage wiring is to be copper conductors.
A minimum of 18AWG must be used for installations up to
50’ and 16AWG for installations over 50’. Low voltage
wiringcan be made through the top of the cabinet or through
either side. See the “Thermostat Wiring” section of this
manual for the ARUF, ARPF and ARPT models for typical
low voltage wiring connections. The Supplemental
Installation Manual included with theAEPT product shows
the wiring diagrams for these models.
REFRIGERANT LINES
WARNING
TO PROTECT THE UNIT WHEN WELDING CLOSE TO
THE PAINTED SURFACES, THE USE OF AQUENCHING
CLOTH IS STRONGLYADVISED TO PREVENT
SCORCHINGOR MARRING OF THE EQUIPMENT FINISH.
SOLDER WITH AMINIMUM OF 5% SILVER IS
RECOMMENDED.
Tubing Preparation
Allcutends are tobe round, burr free,and cleaned. Failure
to follow this practice increases the chances for refrigerant
leaks. The suction line is spun closed and requires pipe
cutters to cut off the closed end.
Post Brazing
Quench all welded joints with water or a wet rag.

7
IO-230F 08/04
Piping Size
For the correct tubing size, follow the specification for the
condenser/heat pump.
WARNING
THIS COIL IS SHIPPED UNDER PRESSURE. FOLLOW
THESE INSTRUCTIONS TO PREVENT INJURY(SEE
FIGURES 1 AND 2).
Evaporator Coil Metering Devices
Flowrater Models (ARUF and ARPF)
For most installations no change to the flowrater orifice is
required. In mix-matched applications (condenser/heat
pumpis a differenttonnage than theair handler), a different
flowraterorifice may berequired. See the Goodman piston
kit chart PKC-00 or latest revision. Consult your local
distributor for the details regarding mix-matched orifice
sizing.
1. Loosen the 13/16nut 1 TURN ONLY.Nopressure loss
indicates possible leak.
2. Remove the nut and discard the black or brass cap.
3. Remove the check piston to verify it is correct. See
piston kit chart in instructions.
4. Use a tube cutter to remove the spin closure on the
suction line.
5. Remove the tailpiece clamped to the exterior.
6. Slide the 13/16 nut into position. Braze tailpiece to
the liquid tube.
7. Insert the suction line into the connection, slide the
insulation and the rubber grommet at least 18" away
from the braze joint.
8. AFTER THE TAILPIECE HAS COOLED, position the
white Teflon seal and hand tighten the nut.
9. Torque the 13/16 nut to 20-30 ft-lbs. [2.77-4.15 meter
kg].
10. Replace suction line grommet and insulation.
TAILPIECE
13/16" NUT
PLASTIC or BRASS CAP
WHITE
TEFLON SEAL
PISTON
APPLY FLOWRATER
GASKET FOR AIR
TIGHT APPLICATION
Figure 1
RUBBER
GROMMET
SUCTION LINE
WITH SPIN CLOSURE
Figure 2
TXV Models (ARPT and AEPT)
IMPORTANT NOTE: In order to prevent damage to the
sensing bulb, it is not permanently installed in the factory.
This bulb is to be removed prior to brazing. Place in proper
location after braze joint has cooled (Figure 3).
1. Loosen the 13/16 nut 1 TURN ONLY. No pressure
loss indicates possible leak.
2. Remove the nut and discard the black or brass cap.
3. Remove large front panel and remove sensing bulb
from suction manifold. TO PREVENT DAMAGE TO
SENSING BULB, ENSURE BULB IS NOT NEAR
FLAME OR IN CONTACT WITH SUCTION LINE OR
MANIFOLD DURING BRAZING.
4. Use a tube cutter to remove the spin closure on the
suction line.
5. Remove the tailpiece clamped to the exterior.
6. Slide the 13/16 nut into position (Figure 1). Braze
tailpiece to liquid tube.
7. Insert the suction line into the connection, slide the
insulation and the rubber grommet at least 18" away
from the braze joint.
8. AFTER THE TAILPIECE HAS COOLED, position the
white Teflon seal and hand tighten the nut.
9. Torque the 13/16 nut to 20-30 ft-lbs. [2.77-4.15 meter
kg].
10. Replace sensing bulb to horizontal portion of suction
line (Figure 3) just inside cabinet. Place bulb parallel
withsuction line in the 10 o’clock position. If10 o’clock
positionis inaccessible,place inthe 2o’clock position.
Secure bulb to line with strapping provided in literature
envelope. Insulate sensing bulb to line with self-
adhesive insulation provided in envelope.
11. Replace access panel, suction line grommet, and
insulation.
REATTACH BULB HERE USING
STRAPPING AND INSULATION
PROVIDED
Figure 3
For the majority of installations, no adjustment to the TXV
setting is required. However, if the measured superheat is
less than 8° or greater than 20°, an adjustment is required.
The adjustment stem is at the base of the valve (opposite
the diaphragm) under the flare nut.

8
IO-230F 08/04
To increase the superheat (measured at the condenser
base valve), turn the stem clockwise (in). Similarly, to
decrease the superheat, turn the stem counterclockwise
(out). Use a ¼ “ refrigeration wrench for this function.
Note: Design point for the system is 10 degrees of
superheat (measured at the condenser base valve) at 95
degree outdoor air.
Charging Note: Air handlers with TXV’s (ARPT’s and
AEPT’s) should be charged to 15 degrees of subcooling at
the indoor inlet. This supercedes any subcooling value
listed with condensing unit’s literature.
AEPT MOTOR ORIENTATION
Ifthe unit is in theupflow position, there is noneed to rotate
themotor. Iftheunitisinthedownfloworhorizontalposition,
loosen motor mount and rotate motor as shown in Figure
4. Be sure motor is oriented with the female connections
on the casing pointing down. If the motor is not oriented
with the connections pointing down, water will collect in
the motor and cause premature failure.
FRONT VIEW
FOR OPTIONAL
SAFETY GND USE
MOUNTING BOLTS
SIDE VIEW
FEMALE CONNECTIONS
Figure 4
AEPT Motor Orientation
CONVERSION TO DOWNFLOW
The ARPF “B” series product is factory equipped for
downflow operation and no field conversion is required. It
is recommeneded that the conversion to downflow be
performedbefore placing theair handler in its final location
andinan area that allowsfor access to allsides. To prevent
the evaporator coil pan from “sweating” the DPI accessory
insulationkit is to be used when performing this conversion.
Note: The DPI kit is not supplied with this product and is to
be purchased separately. See Table 8 for the correct DPI
kit.
ARUFor ARPT
model AEPT model Insulation Kit
018-032 n/a DPI18-30/20
036-042 30 DPI36-42/20
048-061
036, 060
DPI48-61/20
Table 8
Refer to Figures 5 through 7for the location of the
components referenced in the following steps. Figure 5
illustrates the new installation location for the removed
components.
1. Before inverting the air handler, remove all access
panels, the coil rear channel bracket, and the filter
close-off panel.
2. Remove the evaporator coil and the horizontal drain
pan. Discard horizontal drain pan.
3. Installthe provided plasticplug into the vacated access
panel.
4. Remove the two (2) zee coil support brackets and
insulation retaining brackets.
5. Remove the tie bracket.
6. InstalltheDPI Insulation Kitonto the bottom ofthe drain
pan.
Return Air Side
of Unit
Rear
Channel
Bracket
Zee Coil
Support Bracket
Access
Panel
Coil Retaining
Bracket
NOTE: The filter provision is not applicable
in THIS downflow application.
Tie Bracket
Figure 5
7.Installthe zee coilsupports and the wrapper stiffeners.
8. Install the tie bracket.
9. Install the rear channel bracket.
10. Topreventpossible condensate “blow off”theinsulation
retainers are to be laid into the evaporator coil pan as
shown in Figure 6.
3" Flat Insulation
Retainer (Both Sides)
Figure 6

9
IO-230F 08/04
To complete the conversion, slide the evaporator coil into
thechassis and attachthe three (3)access panels. (Figure
7).
CONVERSION TO HORIZONTAL
The “B” series product is not suitable for horizontal
applicationandmust not be usedforthis type ofinstallation.
The following describes converting to “Horizontal Left-
Hand”. The only field modification required for conversion
to “Horizontal Right-Hand” is the removal of the plastic
knockouts in the horizontal panel drain connections.
TOP OF WRAPPER
INSULATION JACKET
ZEE COIL SUPPORT
WRAPPER STIFFENER
DRAIN PAN INSULATION
DPI KIT (HATCHED AREA)
NEOPRENE GASKET
MOTOR
BLOWER
Figure 7
As shown in Figure 8, it is recommended that the
conversion to horizontal be performed before placing the
air handler in its final location and in an area that allows for
access to all sides.
1. Remove the (3) air handler access panels.
2. Remove the “J” shaped bracket that retains the
evaporator coil.
3. Remove the flowrater (or TXV) from the lower left side
access panel and slide out the evaporator coil and
horizontal drain pan.
4. Remove the gasket from the horizontal pan drain
connections.
5. Remove the oval shaped plastic plug from the left side
access panel. Remove the oval shaped rubber gasket
seal from the lower right side access panel.
6. Thedrainconnectionsforthehorizontalpanaresealed
with a thin coating of plastic. Carefully knock out this
plastic seal with a screwdriver and hammer. Note:
The upper drain will become the secondary drain
which is mandatory in many municipalities .
7. Install the plastic plug removed in step 5 to the right
side lower access panel and the oval shaped rubber
gasket to the lower left access panel.
8. Reinstall the evaporator coil with the horizontal panel
on the left side. Note: Push the assembly completely
to the rear to ensure the engagement of the upflow
pan with the rear channel bracket.
9. Install the “J” bracket (removed in step 2) to support
the upflow pan to the tie channel.
10. Attach all panels and the refrigerant management
device.
Secondary Drain
Primary Drain
Figure 8
CONDENSATE REMOVAL
The drain pan has a primary and secondary drain
connection (Figure 8). Condensate removal is performed
by attaching a ¾” PVC pipe to the evaporator coil pan and
terminated in accordance with local or state Plumbing/
HVAC codes. The installation must include a “P” style trap
that is located as close as is practical to the evaporator
coil. Exercise caution not to over-tighten the drain
connection(s) in order to prevent possible damage to the
evaporator drain pan. See Figure 9 for details of a typical
condensate line “P” trap.
Installations that are above a finished ceiling may require
a field supplied auxiliary drain pan. Consult local codes on
this requirement.
DRAIN
CONNECTION
2" MINIMUM
3" MINIMUM
POSITIVE LIQUID
SEAL (REQ'D)
UNIT
FLEXIBLE
TUBING (HOSE
OR PIPE)
Figure 9
Use of a condensate removal pump is permitted when
necessary. This condensate pump should have provisions
for shutting off the control voltage should a blocked drain
occur. A trap must be installed between the unit and the
condensate pump.

10
IO-230F 08/04
IMPORTANT NOTE: THE EVAPORATOR COIL IS
COATED WITH OILS THATMAYDISSOLVE
STYROFOAM AND CERTAIN TYPES OF PLASTICS.
THEREFORE, AREMOVAL PUMP OR FLOATSWITCH
MUST NOT CONTAINANY OF THESE MATERIALS.
Tip: Priming the “P” trap may avoid improper draining at
the initial installation and at the beginning of the cooling
season.
ACHIEVING 2% LOW LEAKAGE RATE
Ensure that the Neoprene gasket with PSA remains intact
on all surfaces that the access panels are secured to.
These surfaces are the entire length of the wrapper and
areasbetween the uppertie plate, upper and lower access
panels. Be sure that upper access panel breaker insert
gasket is intact and also flowrator gasket is installed on
the lower access panel. An additional drain hole cover is
required.
ARUF/ARPF MOTOR
Motor SpeedAdjustment
The motors in allARUF andARPF motors are multi-speed
PSC motors. The color of the wire coming from the motor
tothe “COM” terminal on the control boarddefines in which
speed the motor will operate. The black wire represents
high speed, the red wire represents low speed, and the
blue wire (select models only) represents medium speed.
Tochange speeds, removethe wire attached to the “COM”
terminalon the control board, and swap it with the wire (on
terminal “M1” or “M2”) with the color that will give the
desired speed.
NOTE: In some models, not all speed taps are allowable
for certain electric heat applications. Refer to air handler
Series and Ratings plate for minimum speed.
AEPT MOTOR
This section references the operation characteristics of
the AEPT model motor only. The ECM control board is
factory set with dipswitch #4 in the “ON” position and all
other dipswitches in the “OFF” position. For most
applications this setting is to be changed according
to the electric heat size and the outdoor unit selection.
The AEPT product uses a General Electric ECMTM motor.
This motor provides many features not available on the
traditional PSC motor. These features include:
•Improved Efficiency
•Constant CFM
•Soft Start and Stop
•Improved Humidity Control
Motor Speed Adjustment
Each ECMTM blower motor has been preprogrammed for
operation at 4 distinct airflow levels when operating in
Cooling, H.P. Heating, Backup Heating (Electric Heating),
and Backup + H.P. Heating. Each mode has 4 levels to
deliver different Air Flow CFM [L/s]. The adjustment is
performedby changingthe dipswitch(s)either toan “OFF”
or “ON” position.
Dipswitch Functions
TheAEPT air handler motor has an electronic control that
contains an eight (8) position dip switch. The function of
these dipswitches are shown in Table 9.
Dipswitch Number Function
1
2
3
N/A
4
Indoor Thermostat
5
6
7
8
Cooling & Heat Pump CFM
CFM Trim Adjust
Table 9
Electric Heat
CFM Delivery
Tables 10 and 11 show the CFM output for dipswitch
combinations 1-2, and 5-6.
Switch Switch
1 2
OFF OFF 1100 1210
ON OFF 850 935
OFF ON 700 775
AEPT36 OFF OFF 2050 2150
and ON OFF 1750 1835
AEPT60 OFF ON 1600 1680
ON ON 1200 1260
Model
TABLE 10 - ELECTRIC HEAT CFM
AEPT30
EMERGENCY
(ELECTRIC)
HEAT
HP
w/BACKUP
HEAT
Switch Switch
5 6
OFF OFF 2 ½ 1100
ON OFF 2 800
OFF ON 1 ½ 600
AEPT36 OFF OFF 5 1800
and ON OFF 4 1580
AEPT60 OFF ON 3 ½ 1480
ON ON 31200
Table 11 - Cooling and Heat Pump CFM
Nominal Cooling
Tonnage
AEPT30
Model CFM
Thermostat “Fan Only Mode”
During“Fan Only Mode” operation, the CFM output is 30%
of the cooling setting.
CFM Trim Adjust
Minor adjustments can be made through the dip switch
combination of 7-8. The following Table 12 shows the
switch position for this feature.
CFM Switch 7 Switch 8
+10% ON OFF
-15% OFF ON
Table 12

11
IO-230F 08/04
Humidity Control
When using a Humidistat (normally closed), cut jumper PJ6 on the control board. The Humidistat will only affect cooling
airflow by adjusting the Airflow to 85%.
Two Stage Heating
When using staged electric heat, cut jumper PJ4 on the control board.
Thermostat Wiring
Usethermostat wiring diagramFigures 10 thru 13 andthose provided with thethermostatwhenmakingtheseconnections.
NOTE: DO NOT USE THESE DIAGRAMS FOR AEPT MODELS. SEE SUPPLEMENTAL INSTALLATION AND
OPERATING INSTRUCTIONS FOR AEPT MODELS.
ROOM THERMOSTAT
WYGR
#18 GA. 4 WIRES WITH
COOLING 3 WIRES WITHOUT
R
G
W
Y
TO CONDENSING
UNIT 24V. CONNECTIONS
#18 GA. 2 WIRES BLUE
WHITE
GREEN
RED
CONTACTOR
COIL
AR UNIT
Figure 10 - Low Voltage Wiring Diagram for Cooling Unit with optional heat kit 10KW and below
W2 WYGR
R
G
Y
W
GREEN
RED
WHITE
BLUE
BROWN
#18 GA. 4 WIRE WITH
COOLING 3 WIRE WITHOUT
ROOM THERMOSTAT
OUTDOOR
THERMOSTAT
(OPTIONAL)
CONDENSING
UNIT 24V. CONNECTIONS
#18 GA. 2 WIRES
#18 GA. 2 WIRES
CONTACTOR
COIL
AR UNIT
Figure 11 - Low Voltage Wiring Diagram for Cooling Unit with optional heat kit 15KW and above

12
IO-230F 08/04
CW2 O Y RYOCGRE
W2
TYPICAL H/P
ROOM THERMOSTAT
HEAT PUMP
AR/ARUF/ARPF/ARPT
18-60
10 KW & BELOW
(OPTIONAL)
OUTDOOR THERMOSTAT
CLOSE ON TEMPERATURE FALL
RED
GREEN
WHITE
BLUE
AR UNIT
R
Y
O
W
BL
#18 GA. 5 WIRE
#18 GA. 7 WIRE
SEE
NOTE
#3
R
G
BR
W
BL
R
E
D
Y
E
L
L
O
W
O
R
A
N
G
E
W
H
I
T
E
B
L
U
E
#18 GA. 6 WIRE NEEDED WHEN OT IS USED
O
R
A
N
G
E
Y
E
L
L
O
W
#18 GA. 7 WIRE NEEDED WHEN TWO OT'S ARE USED
#18 GA. 5 WIRE
BL
O
W
Y
BL
SEE
NOTE
#3 W
G
BLUE
WHITE
GREEN
TYPICAL H/P
ROOM THERMOSTAT
AR/ARUF/ARPF/ARPT
18-60
ABOVE 10 KW
HEAT PUMP
B
L
U
E
W
H
I
T
E
CW2
R
E
D
YO R
R
YCOW2
#18 GA. 7 WIRE
RGE
R
AR UNIT
RED
OT-1
OT-2
3
EHR 12
4BROWN
SEE
NOTE
#2
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE
FIRST TO CLOSE AND THE LAST TO OPEN.
2) CONNECT WHITE AND BROWN WIRES FROM AIR-
HANDLER TOGETHER IF OT-2 IS NOT USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT
NOMENCLATURE
OT ---OUTDOOR THERMOSTAT (OPTIONAL)
EHR -EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
R --RED
Y --YELLOW
BL-BLUE
BR-BROWN
O --ORANGE
W -WHITE
G --GREEN
(OPTIONAL)
OUTDOOR THERMOSTAT
CLOSE ON TEMPERATURE FALL
BR
R
G
BL
W
G
R
BL
BR
FIGURE 12
FIGURE 13
Important: If outdoor thermostat is not used, tie white and brown wires from Air Handler together

13
IO-230F 08/04
Quality Makes the Difference!
All of our systems are designed and manufactured with the same high quality standards
regardless of size or efficiency. 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 websites at www.goodmanmfg.com or www.amana-hac.com for information on:
•Products
•Warranties
•Customer Services
•Parts
•Contractor Programs and Training
•Financing Options
© 2003-2004 Goodman Manufacturing Company, L.P.
THERMOSTATS
Note: Second Stage heat can be accomplished by multi-
stage heating thermostat or the addition of an outdoor
thermostat as shown in Figures 12 and 13.
Goodman part number CHT18-60 is a single-stage cool
and single-stage heat thermostat.
Goodman part number HPT18-60 is a single-stage cool,
two-stage heat pump thermostat. The first stage is heat
pumpheatingand the second stageisoptional electric heat.
If additional features are desired, such as digital or
programmable capabilities, these thermostats are
commercially available. Follow the thermostat
manufacturer’s instruction for installation.
START-UP PROCEDURE
•Prior to start-up, ensure that all electrical connections
are properly sized and tightened.
•All panels must be in place and secured. For Air Tight
application, neoprene gasket must be positioned at
prescribed locations to achieve 2% leakage.
•Tubing must be leak free.
•Unit should be elevated, trapped and pitched to allow
for drainage.
•Low voltage wiring is connected.
•Auxiliary drain is installed when necessary and pitched
to allow for drainage.
•Drain pan and drain tubing has been leak checked.
•Return and supply ducts are sealed.
•Unit is elevated when installed in a garage or where
flammable vapors may be present.
•Unit is protected from vehicular or other physical
damage.
•Return air is not obtained from any areas where there
may be objectionable odors, flammable vapors or
products of combustion such as carbon monoxide
(CO), which may cause serious personal injury or
death.
REGULAR MAINTENANCE
WARNING
DISCONNECT ALL POWER SUPPLIES BEFORE
PERFORMING ANY SERVICE. NOTE THATTHERE MAY
BE MORE THAN ONE POWER SUPPLY. FAILURE TO
OBSERVETHIS WARNING CAN RESULTIN ELECTRICAL
SHOCK THATCAN CAUSE PERSONAL INJURYOR
DEATH.
The only item to be maintained on a regular basis by the
user is the circulating air filter(s). Filter should be cleaned
or replaced regularly. A certified service technician must
perform all other services.