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VERTICAL MOUNT AIR HANDLERS
INSTALLATION INSTRUCTIONS
Important Safety Instructions
As a professional installer, you have an obligation to know the
product better than the customer. This includes all safety precautions and related items. Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay
special attention to all safety warnings. Remember, it is your
responsibility to install the product safely and to know it well
enough to be able to instruct a customer in its safe use.
Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific, good safety
practices...follow them.
The precautions listed in this Installation Manual are intended
as supplemental to existing practices. However, if there is a
direct conflict between existing practices and the content of
this manual, the precautions listed here take precedence.
© 2005-2009 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-281J Date: December 2009
Installations and re pair of this un it should be
performed by individuals meeting the
ONLY
require ment s of an “En try Level Techn ician” as
specified by the Air Conditioning, Heating, and
Refrigeration Institute (A HRI). Attemptin g to install
or repair this unit without such background may
result in product damage, personal injury , or death.
This unit should not be connected to, or used in conjunction with, any devices that are not design certified
for use wi th this uni t or h ave not b ee n tes ted an d
approved by Goodm an. Se rious pro perty damage or
personal injury, reduced unit performance and/or
hazardous conditions may result from the use of devices
that ha v e no t be en ap pr o ve d o r c e rt ifi e d b y G o od man .
HIGH VOLTAGE!
Disconnect ALL power before servicing or
installing this unit. Multiple power sources
may be present.
Failure to do so may cause property
damage, personal injury or death.
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 gar a ges, utility rooms or parking areas bec ause o f
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 parki ng area a nd a carbon m onox i de 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 prod uc ing device continues to operate in
the enclosed area. Carb on monoxi de emi ss io ns can be (re) c irculated
throughout the structure if the furnace or air handle r is operat ing in any
mode.
CO can cause serious illness including permanent brain damage or death.
B10259-216
WARNING
To prevent the risk of property damage, personal injury,
or death, do not store combustible materials or use
gasoline or other flammable liquids or vapors in the
vicinity of this appliance.
CAUTION
Have your contractor identify all the various cutoff switch es
and devices that service this unit. Know wher e the switc h is
that will cut off ener gy t o the heating sys t e m in the event of
overheating.
Shipping Inspection
Upon receiving the product, inspect it for damage from shipment. Shipping damage, and subsequent investigation is the
responsibility of the carrier. Verify the model number, specifications, electrical characteristics, and accessories are correct prior to installation. The distributor or manufacturer will not
accept claims from dealers for transportation damage or in-
-
stallation of incorrectly shipped units.
Codes & Regulations
This product is designed and manufactured to comply with
national codes. Installation in accordance with such codes and/
or prevailing local codes/regulations is the responsibility of the
installer. The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations.
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The United States Environmental Protection Agency (EPA)
has issued various regulations regarding the introduction and disposal of refrigerants. Failure to follow these
regulations may harm the environment and can lead to
the imposition of substantial fines. These regulations may
vary by jurisdiction. A certified technician must perform
the installation and service of this product. Should you
have any questions please contact the local office of the EPA.
Replacement Parts
When reporting shortages or damages, or ordering repair parts,
give the complete product model and 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:
SERVICE PARTS DEPARTMENT
GOODMAN MANUFACTURING COMPANY, L.P.
5151 SAN FELIPE, SUITE 500
HOUSTON, TEXAS 77056
(713) 861 – 2500
Installer’s Note:
Replacement air filters can be ordered directly from the supplier:
United Air Filter
Charlotte, NC
Phone: 704-334-5311
AWUF18-24 - Part #BT1369604,14” x 18” x 1”
AWUF36 - Part #BT1369606,16” x 20” x 1”
AWUF31-37 - Part #BT1369608,18” x 20” x 1”
Pre-Installation Instructions
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, hardware and supplies needed to complete the installation. Some items may
need to be purchased locally. Make sure everything needed to
install the product is on hand before starting.
Before attempting any installation, the following points should
be considered:
IMPORTANT NOTE TO THE OWNER
REGARDING PRODUCT WARRANTY
Your warranty certificate is supplied as a separate document
with the unit installed by your contractor. Read the limited
warranty certificate carefully to determine what is and is not
covered 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 (877254-4729) to obtain a copy.
IMPORTANT: To receive the 10-year Parts Limited Warranty,
online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec.
To register your Goodman brand unit, go to
www.goodmanmfg.com. Click on the word “Warranty” located
on the left side of the home page. Next, click on the word
“Product Registration” located on the left side of the Warranty
page and complete the forms in the manner indicated on the
Product Registration page.
Product limited warranty certificates can be viewed at
www.goodmanmfg.com or www.amana-hac.com. Each product
overview page contains a Product Warranty link; by clicking on
it you will be able to view the limited warranty coverage for that
specific product. To view warranty registration information, click
on the Product Warranty text on the left navigation panel on
the home page of each website. The Online Product Registration pages are located in this same section.
Before using this manual, check the serial plate for proper model
identification.
The installation and servicing of this equipment must be performed by qualified, experienced technicians only.
• Structural strength of supporting members
• Clearances and provision for servicing
• Power supply and wiring
• Air duct connections
• Drain facilities and connections
Application Information
The unit is designed to be installed either recessed into a wall
or hanging in a vertical “upflow” position. If units are recessed
in a wall, use the holes along the inside of the front flange to
attach units to the framing studs. The vertical airhandler comes
equipped with an offset hanging bracket attached to the rear of
the cabinet for hanging applications.
The airhandler also has a bottom and front return. Large chas-
sis installations should be installed as front return only. If
the small chassis airhandler is to be installed in a bottom return application, discard the drain access panel in the bottom
of the unit. If the airhandler is to be installed in a front return
application, remove and discard the front access panel with
insulation. The unit is shipped with a filter rack and filter. Remember to inspect, clean and/or replace the filter monthly.
Units are equipped with both a bottom primary and secondary
drain. Both drains must be trapped. Failure to install a trap
could result in condensation overflowing the drain pan resulting
in substantial water damage to the nearby area.
To prevent potential sweating and dripping on to finished space,
it may be necessary to insulate the condensate drain line located inside the building. Use Armaflex® or similar material.
NOTE: If you intend to install this unit with a “WAD” door
it must be mounted 1/4” behind front edge of stud.
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Electrical Supply Wire and MOP
Maximum Allowable Length in Feet
to Limit Volta g e D ro p to 2%*
HIGH VOLTAGE
To avoid the risk of fir e or eq u ipment
dama ge, use only co pp er conducto r s .
Disconnect ALL power before servicing or
insta lling this u nit. Multip le power sou r ces may
be present. Th e ele ctrical power to this unit
MUST be in the OFF position and all power supplies
disconnec t ed. Fail ure to do so may cause pro p e rty
damage, personal injury or death.
The unit MUST have an unin te rru pt ed , un bro ke n
electrical ground to minimize the possibility of
personal injury 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 contro l box wi r e to the bui ldin g’s
electrical service panel. Other methods of grounding
are per mitted if performed in accordance with the
“National Electric Code” (N E C) /”Ameri c an N at ional
Standards Institute” (ANSI)/”National Fire Protection
Association” (NFPA) 70 and local/state codes. In
Canada, elec trical grounding is to be in accordance
with the Canadian Elec tric Code CSA C22.1. Failure
to observe this warning can result in electrical shock
that can cause personal injury or death.
Inspection of the Building Electrical Service
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 1.
Wire Size
(AWG)
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
8 301 201 150 120 100 86 75 68
6 471 314 235 188 157 134 118 110
*Based on NEC 1996
Minimum Circuit Ampacity (M CA)
10 15 20 25 30 35 40 45
Table 2
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.
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.
NOTE: Fuses or circuit breakers are to be sized larger than
the equipment MCA but not to exceed the MOP.
IMPORTANT NOTE: Torch heat required to braze tubes of
various sizes is proportional to the size of the tube. Tubes of
smaller size require less heat to bring the tube to brazing
temperature before adding brazing alloy. Applying too much
heat to any tube can melt the tube. Service personnel must use
the appropriate heat level for the size of the tube being brazed.
NOTE: The use of a heat shield when brazing is recommended
to avoid burning the serial plate or the finish on the unit. Heat
trap or wet rags should be used to protect heat sensitive
components such as service valves and TXV valves.
Nominal Input Minimum Voltage M aximum Voltage
208/230 187 253
Table 1
Wire Sizing
Wire size is important to the operation of your equipment. Use
the following check list when selecting the appropriate wire
size for your unit.
• Wire size must carry the Minimum Circuit Ampacity
(MCA).
• Wire size allows for no more than a 2% voltage drop
from the building breaker/fuse panel to the unit.
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 Table 2 to determine the voltage drop per
foot of various conductors.
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.
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Special Instructions
This airhandler comes equipped with an evaporator coil with a
check style flowrator assembly, an indoor blower and all necessary internal electrical wiring. For most installations with
matching applications, no change to the flowrator orifice is required. However, in mix-matched applications, a flowrator
change may be required. See the Goodman piston kit chart or
consult your local distributor for details regarding mix-matched
orifice sizing. If the mix-match application requires a different
piston size, change the piston in the distributor on the indoor
coil before installing the coil and follow the procedure in this
section.
CAUTION
Excessive torque can cause orifices to stick. Use the proper
torque settings when tightening orifices.
11.Replace suction line insulation.
12. After installation, evacuation and charging of the low side
is complete, check fittings for leaks.
NOTE: With the piston in the distributor, the seal end should
point inside the distributor body and should not be seen when
looking into the end of distributor. Make sure the piston is free
to rotate, and move up and down in the distributor body.
WARNING
The evaporator coil is shipped from the factory with
approximately 90 PSI tracer gas charge. Use caution
when relieving pressure.
CAUTION
To prevent feeder tube damage, hold the distributor body
with a 3/4" open end wrench when removing or replacing
the 13/16" flare nut.
1. Remove the valve core to allow high pressure tracer gas
to escape. No gas indicates a possible leak.
2. Remove the 13/16" flare nut and tailpiece.
3. Unsweat the access fitting on the tailpiece
4. Remove the check piston to verify it is correct and then
replace the piston. See piston kit chart in instructions.
5. Unsweat the cap on the suction line.
6. Slide the 13/16" flare nut over the tailpiece.
7. Braze tailpiece to the lineset liquid tube.
8. Insert the suction line into the connection, slide the insulation at least 18" away from the braze joint. Braze suction line.
MAINTENANCE
Periodic Checkup and Service
This unit is designed to provide many years of dependable,
trouble-free comfort when properly maintained. Proper maintenance will consist of annual checkups and cleaning of the internal electrical and heat transfer components by a qualified
service technician. Failure to provide periodic checkup and
cleaning can result in excessive operating cost and/or equipment malfunction.
9. AFTER THE TAILPIECE HAS COOLED, confirm position of the white Teflon® seal and hand tighten the 13/16"
flare nut.
10. Torque the 13/16" flare nut to 10-25 ft-lbs or tighten 1/6th
turn.
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SUCTIO N LINE
LIQUID LINE
REMOVABLE
SERVICE DOOR
FRONT ACCESS
PANEL
SMALL CHASSIS
BOTTOM PRIMAR Y AND SECONDARY
DRAINS CAN BE ACCESSED THROUGH THE
BO TTO M OF THE UNIT. (3/4" N PT FEMALE
CONNECTION)
NOTE: HAND TIGHTEN ONLY
CABINET DIMENSIONS
LARGE CHASSIS
2.5 & 3.0 TON
A36 36
B 24 20 3/16
C21 16 1/8
D19 7/8 16
E15 7/8 11
5
SMALL CHASSIS
1.5 & 2.0 TON
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NOTE: SPECIFICATIONS & PERFORMANCE DATA LISTED HEREIN
ARE SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: Thermostat heat anticipator setting is 0.2.
WYG
AWUF18, 24, 30, 36, 37
TAPE
WYG
AWUF31/32
T2
T3
NOTE: T1 Y
Connect to the
going to the outdoor unit.
NOTE:
T1
TAPE
Connect appropriate speed tap
(Pink/Purple/Y ellow) to T1.
Re f e r t o table b elow f or s peed ta p s elec t i o n
T4
T5
T6
WIRE COLOR B TUH N OM INA L CF M
PURPLE 18,000 600
PINK 24,000 800
YELLOW 30,000 950
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BLOWER CHART FOR VERTICAL MOUNT AIR HANDLERS
Model Speed
AWUF18XX1/16A*
AWUF18XX16B*
AWUF24XX1/16A*
AWUF24XX16B*
AWUF30XX1/16A*
AWUF30XX16B*
AWUF310516XX
CFM delivered against External Static Pressure
0.1" 0.2" 0.3" 0.4" 0.5"
High 750 730 690 650 595
Low 710 700 690 635 585
High 755 715 670 615 545
Low 740 700 655 595 535
High 880 845 810 770 735
Low
High 900 870 835 795 760
Low 865 835 800 765 725
High 1250 1195 1135 1085 1010
Low 1110 1055 1020 955 905
High 1255 1120 1100 1020 950
Low 1115 1010 990 900 820
T5 875 865 830 805 765
T4 1005 975 945 920 890
T3
845 815 780 745 705
840 795 785 745 700
AWUF310816XX/
AWUF321016XX
AWUF36XX1/16A*
AWUF36XX16B*
AWUF37XX16A*
AWUF37XX16B*
T2 645 615 550 500 445
T1
T5
T4
T3 840 795 785 745 700
T2 645 615 550 500 445
T1 645 615 550 500 445
High 1280 1190 1110 1010 930
Low 1170 1100 1030 950 890
High 1215 1145 1070 985 890
Low 1120 1065 1000 915 820
High 1326 1284 1232 1181 1115
Low
T5 1385 1205 1130 1045 950
T4 1235 1180 1115 1040 955
T3 1165 1120 1075 1025 945
T2
T1
645 615 550 500 445
1090 1065 1040 1015 985
1005 975 945 920 890
1086 1061 1028 996 950
1050 1010 970 930 860
1050 1010 970 930 860
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© 2005-2009 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
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