Goodman Mfg Air Conditioner AEPT User Manual

INSTALLATION & OPERATING  
INSTRUCTIONS FOR  
ARUF, ARPF, ARPT and AEPT  
SERIES AIR HANDLER  
®
US  
C
Made in the USA by:  
Goodman Manufacturing Company, L.P.  
IO-230F  
2550 North Loop West, Suite 400 - Houston, Texas 77092  
© 2003-2004 Goodman Manufacturing Company, L.P.  
08/04  
 
MODEL IDENTIFICATION  
WARNING  
AR  
U
A
F
024  
00  
A
1
THIS PRODUCT IS FACTORY SHIPPED FOR USE WITH  
A 208-230/1/60 ELECTRICAL POWER SUPPLY. THIS AIR  
HANDLER MUST NOT BE RECONFIGURED TO OPERATE  
WITH ANY OTHER POWER SUPPLY.  
Revision  
WARNING  
Electrical  
Supply  
WHEN INSTALLING OR SERVICING THIS EQUIPMENT,  
SAFETY CLOTHING, INCLUDING HAND AND EYE  
PROTECTION, IS STRONGLY ADVISED. IF INSTALLING  
THIS EQUIPMENT IN AN AREA THAT HAS SPECIAL  
SAFETY REQUIREMENTS (HARD HATS ETC.), OBSERVE  
THESE REQUIREMENTS. TO PROTECT THE UNIT WHEN  
WELDING CLOSE TO THE PAINTED SURFACES, THE  
USE OF A QUENCHING CLOTH IS STRONGLY ADVISED  
TO PREVENT SCORCHING OR MARRING OF THE  
EQUIPMENT FINISH.  
208 - 230/1/60  
Feature  
A = Initial Release  
B = Downflow  
C = Factory Sealed  
Factory Installed Heat  
00 = None  
Normal Capacity  
018 = 1½ Ton  
024 = 2 Ton  
WARNING  
THE UNITED STATES ENVIRONMENTAL PROTECTION  
AGENCY (“EPA”) HAS ISSUED VARIOUS REGULATIONS  
REGARDING THE INTRODUCTION AND DISPOSAL OF  
REFRIGERANTS INTRODUCED INTO THIS UNIT.  
FAILURE TO FOLLOW THESE REGULATIONS MAY HARM  
THE ENVIRONMENT AND CAN LEAD TO THE  
IMPOSITION OF SUBSTANTIAL FINES. THESE  
REGULATIONS MAY VARY DUE TO THE PASSAGE OF  
LAWS. ACERTIFIED TECHNICIAN MUST PERFORM THE  
INSTALLATION AND SERVICE OF THIS PRODUCT.  
SHOULD QUESTIONS ARISE, CONTACT YOUR LOCAL  
EPA OFFICE.  
030-032 = 2½ Ton  
036 = 3 Ton  
042 = 3½ Ton  
048 & 049 = 4 Ton  
060 & 061 = 5 Ton  
Refrigerant Metering  
T = TXV  
F = Flowrater  
Cabinet Finish  
P = Painted  
U = Unpainted Galvanized Steel  
Model Series  
AE = Air Handler with ECM™ Motor  
AR = Air Handler with PSC Motor  
PRODUCT DESCRIPTION  
With the exception of 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.  
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  
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.  
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.  
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.  
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  
-
IO-230F  
08/04  
3
 
When matched with a Goodman or Amana brand  
condenser or heat pump, anARI certified rating is available  
for many combinations.  
HEAT KIT NOMINAL kW  
CFM  
3
18  
5
28  
21  
17  
14  
12  
10  
9
6
8
10  
15  
20  
21  
600  
800  
35  
26  
21  
18  
15  
13  
12  
11  
41  
31  
25  
21  
18  
15  
14  
12  
The AEPT models are equipped with an ECMTM motor. An  
ECMTM motor is more efficient than a standard PSC motor  
and offers features such as soft-start, controlled off-delays,  
and constant CFM. Additional features and the associated  
controls are discussed later in this manual.  
13  
42  
34  
28  
24  
21  
19  
17  
1000 11  
50  
42  
36  
31  
28  
25  
1200  
1400  
1600  
1800  
2000  
9
8
7
6
5
56  
48  
42  
37  
34  
62  
53  
46  
41  
37  
Electric heat is available for all models. This is an accessory  
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.  
8
Table 1  
230/1/60 Supply Voltage - Temperature Rise Table °F  
HEAT KIT NOMINAL kW  
CFM  
3
17  
5
6
8
10  
15  
20  
21  
600  
800  
27  
20  
16  
13  
11  
10  
9
34  
25  
20  
17  
14  
13  
11  
10  
39  
30  
24  
20  
17  
15  
13  
12  
UNIT INSPECTION  
13  
40  
32  
27  
23  
20  
18  
16  
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.  
1000 10  
48  
40  
34  
30  
27  
24  
1200  
1400  
1600  
1800  
2000  
8
7
6
6
5
53  
46  
40  
36  
32  
59  
51  
44  
39  
35  
Using the table “Model Identification” section, check the  
equipment model number to ensure the unit is appropriately  
sized for the condenser unit.  
8
Table 2  
220/1/60 Supply Voltage - Temperature Rise Table °F  
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.  
HEAT KIT NOMINAL kW  
CFM  
3
5
25  
19  
15  
13  
11  
9
6
8
10  
15  
20  
21  
600  
800  
16  
32  
24  
19  
16  
14  
12  
11  
10  
37  
38  
22  
19  
16  
14  
12  
11  
The evaporator coil contains a high-pressure inert gas  
holding charge.  
12  
38  
30  
25  
22  
19  
17  
15  
1000 10  
46  
38  
33  
28  
25  
23  
1200  
1400  
1600  
1800  
2000  
8
7
6
5
5
51  
43  
38  
34  
30  
56  
48  
42  
37  
34  
ELECTRIC HEAT  
WARNING  
REFER TO THE “INSTALLING ELECTRIC HEAT” SECTION  
OF THIS MANUALAND THE INSTRUCTIONS PROVIDED  
WITH THE HEAT KIT FOR THE CORRECT INSTALLATION  
PROCEDURE.  
8
8
Table 3  
208/1/60 Supply Voltage - Temperature Rise Table °F  
Note: For installations not indicated above the following  
formula is to be used:  
WARNING  
THE ELECTRICAL CHARACTERISTICS OF THE AIR  
HANDLER, THE ELECTRIC HEAT KIT, AND THE SUPPLY  
POWER MUSTAGREE, UNLESS USING HKR3 (3 PHASE)  
SERIES HEAT KIT. THISAIR HANDLER DOES NOT HAVE  
FACTORY INSTALLED ELECTRIC HEAT. ELECTRIC  
HEAT ISAVAILABLE ASANACCESSORY. IF INSTALLING  
THIS OPTION, THE ONLY HEATKITS THAT CAN BE USED  
ARE THE HKR SERIES AS INDICATED BELOW: NOTE:  
THEAMANABRAND EHK, ECB, EDB, AND EDK KITSARE  
NOT APPROVED FOR USE WITH THESE AIR  
HANDLERS.  
TR = (kW x 3412) x (Voltage Correction) x 1.08 / CFM  
Where: TR  
KW  
= Temperature Rise  
= 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  
The heating mode temperature rise is dependent upon the  
system airflow, the supply voltage, and the heat kit size  
(kW) selected. Use Tables 1-3 to determine the  
temperature rise (oF).  
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  
IO-230F  
08/04  
4
 
maximum heat and allow the system to reach steady state  
conditions. Insert two thermometers, one in the return air  
and one in the supply air. The temperature rise is the supply  
air temperature minus the room air temperature.  
require external filtering. A washable filter is available as  
an accessory. To ensure optimum performance frequent  
filtercleaningisadvised.RefertoTable 5 for the appropriate  
filter.  
Use HKR specification sheets to determine the HKR  
available for a given air handler.  
ARUFor  
ARPT  
model  
ARPF  
model  
AEPT  
model  
Filter  
Number Required  
Qty  
HKR INSTALLATION  
018-032  
036-042  
048-061  
024, 036  
n/a  
048, 060 036, 060 FIL 48-61  
n/a  
30  
FIL 18-32  
FIL 36-42  
1
1
1
Follow instructions listed in Installation and Operating  
Instructions shipped with the heat kit.  
LOCATION  
Table 5  
WARNING  
THIS AIR HANDLER IS DESIGNED FOR INDOOR  
ELECTRICAL SUPPLY WIRE AND MOP  
INSTALLATION ONLY. DO NOT INSTALL OUTDOORS.  
WARNING  
TOAVOID THE RISK OF FIRE OR EQUIPMENT DAMAGE,  
USE ONLY COPPER CONDUCTORS. BEFORE  
SERVICING OR INSTALLING THIS EQUIPMENT, THE  
ELECTRICAL POWER TO THIS UNIT MUST BE IN THE  
“OFF” POSITION AND ALL POWER SUPPLIES  
DISCONNECTED.  
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.  
CAUTION  
MORE THAN ONE DISCONNECT MAY EXIST. FAILURE  
TO OBSERVE THIS WARNING MAY RESULT IN AN  
ELECTRICAL SHOCK THAT CAN CAUSE PERSONAL  
INJURY OR DEATH.  
WARNING  
THE UNIT MUST HAVE AN UNINTERRUPTED,  
UNBROKEN ELECTRICAL GROUND TO MINIMIZE THE  
POSSIBILITY OF PERSONALINJURY IF AN ELECTRICAL  
FAULT SHOULD OCCUR. THE ELECTRICAL GROUND  
CIRCUIT MAY CONSIST OF AN APPROPRIATELY SIZED  
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, ELECTRICAL GROUNDING  
IS TO BE IN ACCORDANCE WITH THE CANADIAN  
ELECTRIC CODE CSA C22.1. FAILURE TO OBSERVE  
THIS WARNING CAN RESULT IN ELECTRICAL SHOCK  
THAT CAN CAUSE PERSONAL INJURY OR DEATH.  
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.  
Inspection of the Building Electrical Service  
Return Ductwork. DO NOT TERMINATE THE RETURN  
DUCTWORK IN AN AREA THAT CAN INTRODUCE  
TOXIC, OR OBJECTIONABLE FUMES/ODORS INTO  
THE DUCTWORK. The return ductwork is to be introduced  
into the air handler bottom (upflow configuration).  
This unit is designed for single-phase electrical supply. DO  
NOT OPERATE ON A 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.  
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,  
Nominal Input Minimum Voltage Maximum Voltage  
208/230  
187  
253  
Table 6  
IO-230F  
08/04  
5
 
Wire Sizing  
Air Handler Only (Non-Heat Kit Models)  
Wire size is important to the operation of your equipment.  
Use the following check list when selecting the appropriate  
wire size for your unit.  
The building supply connects to the stripped black and white  
wires contained in the air handler electrical compartment  
cavity. A ground screw is also contained in this area. Attach  
the supply wires to the air handler conductors as shown in  
the unit wiring diagram using appropriately sized solderless  
connectors or other NEC or CEC approved means.  
Wire size must carry the Minimum Circuit Ampacity  
(MCA).  
Refer to the NEC (USA) or CSA (Canada) for wire  
sizing. The unit MCA for the air handler and the optional  
electric heat kit can be found on the unit Series and  
Rating Plate.  
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  
Installation Manual and wiring diagram for complete wiring  
details.  
Wire size allows for no more than a 2% voltage drop  
from the building breaker/fuse panel to the unit.  
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  
the HKR circuit breaker(s) as shown in the HKR Installation  
Manual and wiring diagram.  
Refer to 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.  
Maximum Allowable Length in Feet  
to Limit Voltage Drop to 2%*  
Low Voltage Connections  
Several combinations of low voltage schemes are available,  
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  
wiring can 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 the AEPT product shows  
the wiring diagrams for these models.  
Minimum Circuit Ampacity (MCA)  
Wire Size  
(AWG)  
10  
75  
15  
50  
20  
37  
59  
25  
30  
35  
40  
45  
14  
12  
10  
8
NR NR NR NR NR  
118 79  
47  
NR NR NR NR  
63 54 NR NR  
75 68  
471 314 235 188 157 134 118 110  
188 125 95  
75  
301 201 150 120 100 86  
6
*Based on NEC 1996  
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.  
REFRIGERANT LINES  
This protection can be in the form of fusing or HACR style  
circuit breakers. The Series and Rating Plate can be used  
as a guide for selecting the MAXIMUM overcurrent device.  
WARNING  
TO PROTECT THE UNIT WHEN WELDING CLOSE TO  
THE PAINTED SURFACES, THE USE OF A QUENCHING  
CLOTH IS STRONGLY ADVISED TO PREVENT  
SCORCHING OR MARRING OF THE EQUIPMENT FINISH.  
SOLDER WITH A MINIMUM OF 5% SILVER IS  
RECOMMENDED.  
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.  
Tubing Preparation  
All cut ends are to be 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.  
IO-230F  
08/04  
6
 
Piping Size  
TXV Models (ARPT and AEPT)  
For the correct tubing size, follow the specification for the  
condenser/heat pump.  
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.  
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  
pump is a different tonnage than the air handler), a different  
flowrater orifice may be required. See the Goodman piston  
kit chart PKC-00 or latest revision. Consult your local  
distributor for the details regarding mix-matched orifice  
sizing.  
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].  
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 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.  
10. Replace sensing bulb to horizontal portion of suction  
line (Figure 3) just inside cabinet. Place bulb parallel  
with suction line in the 10 o’clock position. If 10 o’clock  
position is inaccessible, place in the 2 o’clock position.  
Secure bulb to line with strapping provided in literature  
envelope. Insulate sensing bulb to line with self-  
adhesive insulation provided in envelope.  
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].  
11. Replace access panel, suction line grommet, and  
insulation.  
REATTACH BULB HERE USING  
STRAPPING AND INSULATION  
PROVIDED  
10. Replace suction line grommet and insulation.  
PLASTIC or BRASS CAP  
APPLY FLOWRATER  
GASKET FOR AIR  
TIGHT APPLICATION  
13/16" NUT  
TAILPIECE  
PISTON  
WHITE  
TEFLON SEAL  
Figure 1  
SUCTION LINE  
WITH SPIN CLOSURE  
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.  
RUBBER  
GROMMET  
Figure 2  
IO-230F  
08/04  
7
 
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.  
Refer to Figures 5 through 7 for 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.  
Note: Design point for the system is 10 degrees of  
superheat (measured at the condenser base valve) at 95  
degree outdoor air.  
2. Remove the evaporator coil and the horizontal drain  
pan. Discard horizontal drain pan.  
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.  
3. Install the provided plastic plug into the vacated access  
panel.  
AEPT MOTOR ORIENTATION  
4. Remove the two (2) zee coil support brackets and  
insulation retaining brackets.  
If the unit is in the upflow position, there is no need to rotate  
the motor. If the unit is in the downflow or horizontal position,  
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.  
5. Remove the tie bracket.  
6. Install the DPI Insulation Kit onto the bottom of the drain  
pan.  
Return Air Side  
of Unit  
Access  
Panel  
Rear  
Channel  
Bracket  
FRONT VIEW  
SIDE VIEW  
Zee Coil  
Support Bracket  
Coil Retaining  
Bracket  
FOR OPTIONAL  
SAFETY GND USE  
MOUNTING BOLTS  
Tie Bracket  
NOTE: The filter provision is not applicable  
in THIS downflow application.  
Figure 5  
FEMALE CONNECTIONS  
7. Install the zee coil supports and the wrapper stiffeners.  
8. Install the tie bracket.  
9. Install the rear channel bracket.  
Figure 4  
AEPT Motor Orientation  
10. To prevent possible condensate “blow off” the insulation  
retainers are to be laid into the evaporator coil pan as  
shown in Figure 6.  
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  
performed before placing the air handler in its final location  
and in an area that allows for access to all sides. To prevent  
the evaporator coil pan from “sweating” the DPI accessory  
insulation kit 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  
AEPT model  
Insulation Kit  
model  
018-032  
036-042  
048-061  
n/a  
30  
036, 060  
DPI18-30/20  
DPI36-42/20  
DPI48-61/20  
3" Flat Insulation  
Retainer (Both Sides)  
Table 8  
Figure 6  
IO-230F  
08/04  
8
 
To complete the conversion, slide the evaporator coil into  
thechassisandattachthethree(3)accesspanels.(Figure  
7).  
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.  
CONVERSION TO HORIZONTAL  
The “B” series product is not suitable for horizontal  
application and must not be used for this type of installation.  
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.  
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.  
TOP OF WRAPPER  
INSULATION JACKET  
ZEE COIL SUPPORT  
Secondary Drain  
Primary Drain  
WRAPPER STIFFENER  
Figure 8  
DRAIN PAN INSULATION  
DPI KIT (HATCHED AREA)  
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.  
BLOWER  
NEOPRENE GASKET  
MOTOR  
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.  
Installations that are above a finished ceiling may require  
a field supplied auxiliary drain pan. Consult local codes on  
this requirement.  
1. Remove the (3) air handler access panels.  
DRAIN  
CONNECTION  
2. Remove the “J” shaped bracket that retains the  
evaporator coil.  
UNIT  
2" MINIMUM  
FLEXIBLE  
3. Remove the flowrater (or TXV) from the lower left side  
access panel and slide out the evaporator coil and  
horizontal drain pan.  
TUBING (HOSE  
3" MINIMUM  
OR PIPE)  
4. Remove the gasket from the horizontal pan drain  
connections.  
POSITIVE LIQUID  
SEAL (REQ'D)  
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.  
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.  
6. The drain connections for the horizontal pan are sealed  
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 .  
IO-230F  
08/04  
9
 
IMPORTANT NOTE: THE EVAPORATOR COIL IS  
COATED WITH OILS THAT MAY DISSOLVE  
STYROFOAM AND CERTAIN TYPES OF PLASTICS.  
THEREFORE, A REMOVAL PUMP OR FLOAT SWITCH  
MUST NOT CONTAIN ANY OF THESE MATERIALS.  
Dipswitch Functions  
The AEPT 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  
Tip: Priming the “P” trap may avoid improper draining at  
the initial installation and at the beginning of the cooling  
season.  
1
2
3
4
5
6
7
8
Electric Heat  
N/A  
Indoor Thermostat  
ACHIEVING 2% LOW LEAKAGE RATE  
Cooling & Heat Pump CFM  
CFM Trim Adjust  
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  
areas between the upper tie 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.  
Table 9  
CFM Delivery  
Tables 10 and 11 show the CFM output for dipswitch  
combinations 1-2, and 5-6.  
ARUF/ARPF MOTOR  
Motor Speed Adjustment  
Model  
Switch Switch EMERGENCY  
(ELECTRIC)  
HP  
w/BACKUP  
HEAT  
1
2
The motors in allARUF andARPF motors are multi-speed  
PSC motors. The color of the wire coming from the motor  
to the “COM” terminal on the control board defines 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.  
To change speeds, remove the wire attached to the “COM”  
terminal on the control board, and swap it with the wire (on  
terminal “M1” or “M2”) with the color that will give the  
desired speed.  
HEAT  
OFF  
ON  
OFF  
OFF  
ON  
1100  
850  
1210  
935  
AEPT30  
OFF  
OFF  
ON  
700  
775  
OFF  
OFF  
ON  
AEPT36  
and  
AEPT60  
2050  
1750  
1600  
1200  
2150  
1835  
1680  
1260  
OFF  
ON  
ON  
TABLE 10 - ELECTRIC HEAT CFM  
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.  
Model  
Switch Switch Nominal Cooling CFM  
Tonnage  
5
6
AEPT MOTOR  
OFF  
ON  
OFF  
OFF  
ON  
2 ½  
2
1100  
800  
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.  
AEPT30  
OFF  
OFF  
ON  
600  
1 ½  
5
OFF  
OFF  
ON  
AEPT36  
and  
AEPT60  
1800  
1580  
1480  
1200  
4
3 ½  
3
OFF  
ON  
ON  
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  
Table 11 - Cooling and Heat Pump CFM  
Thermostat “Fan Only Mode”  
During “Fan Only Mode” operation, the CFM output is 30%  
of the cooling setting.  
CFM Trim Adjust  
• Improved Humidity Control  
Minor adjustments can be made through the dip switch  
combination of 7-8. The following Table 12 shows the  
switch position for this feature.  
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  
performed by changing the dipswitch(s) either to an “OFF”  
or “ON” position.  
CFM  
+10%  
-15%  
Switch 7 Switch 8  
ON  
OFF  
ON  
OFF  
Table 12  
IO-230F  
08/04  
10  
 
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  
Use thermostat wiring diagram Figures 10 thru 13 and those provided with the thermostat when making these connections.  
NOTE: DO NOT USE THESE DIAGRAMS FOR AEPT MODELS. SEE SUPPLEMENTAL INSTALLATION AND  
OPERATING INSTRUCTIONS FOR AEPT MODELS.  
ROOM THERMOSTAT  
#18 GA. 4 WIRES WITH  
COOLING 3 WIRES WITHOUT  
R
G
W
Y
AR UNIT  
R
G
RED  
GREEN  
WHITE  
W
Y
TO CONDENSING  
UNIT 24V. CONNECTIONS  
CONTACTOR  
COIL  
BLUE  
#18 GA. 2 WIRES  
Figure 10 - Low Voltage Wiring Diagram for Cooling Unit with optional heat kit 10KW and below  
ROOM THERMOSTAT  
W2  
Y G R  
W
AR UNIT  
#18 GA. 4 WIRE WITH  
COOLING 3 WIRE WITHOUT  
R
G
Y
RED  
GREEN  
WHITE  
BROWN  
BLUE  
OUTDOOR  
THERMOSTAT  
(OPTIONAL)  
W
#18 GA. 2 WIRES  
CONDENSING  
UNIT 24V. CONNECTIONS  
CONTACTOR  
COIL  
#18 GA. 2 WIRES  
Figure 11 - Low Voltage Wiring Diagram for Cooling Unit with optional heat kit 15KW and above  
IO-230F  
08/04  
11  
 
FIGURE 12  
AR/ARUF/ARPF/ARPT  
18-60  
10 KW & BELOW  
TYPICAL H/P  
ROOM THERMOSTAT  
#18 GA. 7 WIRE  
HEAT PUMP  
W2  
AR UNIT  
C
O
Y
R
W2  
Y
O
C
G
R
E
B
W
H
I
T
E
O
Y
E
L
L
O
W
R
E
D
L
U
E
R
A
N
G
E
R
G
R
RED  
R
Y
G
GREEN  
WHITE  
O
SEE  
NOTE  
#3  
BR  
W
W
W
BL  
BL  
BLUE  
BL  
#18 GA. 5 WIRE  
(OPTIONAL)  
OUTDOOR THERMOSTAT  
CLOSE ON TEMPERATURE FALL  
#18 GA. 6 WIRE NEEDED WHEN OT IS USED  
AR/ARUF/ARPF/ARPT  
18-60  
FIGURE 13  
ABOVE 10 KW  
TYPICAL H/P  
ROOM THERMOSTAT  
#18 GA. 7 WIRE  
HEAT PUMP  
W2  
AR UNIT  
C
O
Y
R
W2  
Y
O
C
G
R
E
B
W
H
I
T
E
O
Y
E
L
L
O
R
E
D
L
U
E
R
A
N
G
E
R
G
R
RED  
R
Y
O
W
BR  
G
GREEN  
WHITE  
SEE  
NOTE  
#3  
W
W
SEE  
NOTE  
#2  
1
2
4
EHR  
BROWN  
BR  
3
BL BLUE  
BL  
BL  
#18 GA. 5 WIRE  
OT-1  
OT-2  
(OPTIONAL)  
OUTDOOR THERMOSTAT  
CLOSE ON TEMPERATURE FALL  
#18 GA. 7 WIRE NEEDED WHEN TWO OT'S ARE USED  
COLOR CODES  
NOTES:  
NOMENCLATURE  
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE  
FIRST TO CLOSE AND THE LAST TO OPEN.  
OT ---OUTDOOR THERMOSTAT (OPTIONAL)  
EHR -EMERGENCY HEAT RELAY (OPTIONAL)  
R --RED  
Y --YELLOW  
BL-BLUE  
2) CONNECT WHITE AND BROWN WIRES FROM AIR-  
HANDLER TOGETHER IF OT-2 IS NOT USED.  
3) REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT  
BR-BROWN  
O --ORANGE  
W -WHITE  
G --GREEN  
Important: If outdoor thermostat is not used, tie white and brown wires from Air Handler together  
IO-230F  
08/04  
12  
 
THERMOSTATS  
Drain pan and drain tubing has been leak checked.  
Return and supply ducts are sealed.  
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.  
Unit is elevated when installed in a garage or where  
flammable vapors may be present.  
Goodman part number CHT18-60 is a single-stage cool  
and single-stage heat thermostat.  
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.  
Goodman part number HPT18-60 is a single-stage cool,  
two-stage heat pump thermostat. The first stage is heat  
pump heating and the second stage is optional 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.  
REGULAR MAINTENANCE  
START-UP PROCEDURE  
WARNING  
Prior to start-up, ensure that all electrical connections  
are properly sized and tightened.  
DISCONNECT ALL POWER SUPPLIES BEFORE  
PERFORMING ANY SERVICE. NOTE THAT THERE MAY  
BE MORE THAN ONE POWER SUPPLY. FAILURE TO  
OBSERVE THIS WARNING CAN RESULT IN ELECTRICAL  
SHOCK THAT CAN CAUSE PERSONAL INJURY OR  
DEATH.  
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.  
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.  
Low voltage wiring is connected.  
Auxiliary drain is installed when necessary and pitched  
to allow for drainage.  
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.  
IO-230F  
08/04  
13  
 

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