Goodman AWUF18, AWUF30, AWUF36, AWUF24, AWUF37 Installation Instructions Manual

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.

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: [phone]

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.

2

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.

3