Maytag Thru-the-Wall Room Air Conditioner Installation instructions

Thru-the-Wall
Room Air Conditioner
with optional Electric Heat
Installation Instructions
and Owner’s Manual
This manual must be left with the owner
of the equipment.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
Contents
IMPORTANT NOTE TO THE OWNER .......................... 2
IMPORTANT NOTE TO THE SERVICER ..................... 2
Unit Features ............................................................... 2
Transportation Damage .............................................. 2
Unpacking The Unit ..................................................... 2
Parts Supplied ............................................................. 2
Unit Accessories .......................................................... 3
Operating Instructions ................................................ 3
Installation Instructions .............................................. 3
Wiring ........................................................................... 5
Unit Operation ............................................................. 6
Preventative Maintenance ........................................... 7
Normal Operating Sounds and Conditions ............... 8
Obtaining Service ........................................................ 8
®
is a trademark of Maytag Corporation
and is used under license to Goodman Company, L.P.
All rights reserved.
ATTENTION INSTALLING PERSONNEL
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. Often during installation or repair it is possible to place yourself in a
position which is more hazardous than when the unit is in operation.
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.
2001-2004 Goodman Company, L.P.
Effective: August 2004

2
IMPORTANT NOTE TO THE OWNER
This equipment is to be serviced by professionally trained
personnel only. If this equipment is improperly installed,
adjusted or altered by an unqualified person, a safety
hazard may result.
IMPORTANT NOTE TO THE SERVICER
Read this manual and familiarize yourself with the specific
items which must be adhered to before attempting to
service this unit. The precautions listed in this manual
should not supersede existing practices but should be
considered as supplemental information.
Unit Features
This unit has an exhaust air option which allows you to bring
outdoor air into the room. To bring air in from outside, snap
in the supplied perforated exhaust air plug (Figure 1) in the
location shown in Figure 2. To use only indoor air, snap in
the solid exhaust air plug.
NOTE: The exhaust air option (perforated plate installed)
can be used in any operation mode.
Figure 1
EXHAUST AIR PLUG
Figure 2
Transportation Damage
All units are securely packed in shipping containers ap-
proved by the National Safe Transit Association. The
carton should be checked upon arrival for external damage.
If damage is found, immediately make a written request for
inspection by the carrier’s agent.
In the event of damage:
1. Note on the delivery receipt any visible damage to
shipment or container.
2. Notify carrier promptly and request an inspection.
3. File the claim with the following supporting documents
within the six month statute of limitations.
a. Original Bill of Lading, certified copy, or indemnity
bond.
b. Original paid freight bill or indemnity.
c. Original invoice or certified copy, showing trade and
other discounts or reductions.
d. Copy of the inspection report issued by carrier’s
representative at the time damage is reported to the
carrier.
The carrier is responsible for making prompt inspection of
damage and for a thorough investigation of each claim. The
distributor or manufacturer will not accept claims from
dealers for transportation damage.
Unpacking The Unit
1. Cut the carton banding and open the carton.
2. Remove the literature, hardware pack, upper styrofoam
shipping blocks, and styrofoam corner posts.
3. Remove the front assembly.
4. Cut the carton around the perimeter of the box 2” from
the bottom and discard the top.
5. Lift the unit from the remaining carton.
6. Dispose of the cardboard and styrofoam at an ap-
proved Recycle Center. Check all contents for dam-
aged or missing parts. In case of concealed damage,
notify the carrier as soon as possible—preferably within
5 days. Refer to step 3 of the Transportation Damage
section if damage or missing parts are noted.
Parts Supplied
Size Description Quantity
1/2” x 1” x 14” Foam Gasket 2
1/2” x 1/2” Foam Gasket (54”) 1
Sleeve Clip 2
#8 x 3/8” Blunt Point Sheet Metal Screw 2
Perforated (Fresh Air) Plug 1
Solid (Fresh Air) Plug 1
Plastic Knob 2
#8 x 3/8” Washer Head Sheet Metal Screw 4

3
Unit Accessories
This unit is designed for through-the-wall installation in new
or existing buildings. To complete the installation in an
existing wall sleeve, a TWKG rear louver panel kit, a
TWEAK or TWFAK adapter kit is required.
If the sleeve is a GE wall sleeve, use the TWKG rear louver
panel kit. If the sleeve is an Emerson wall sleeve, use the
TWEAK adapter kit, If the sleeve is a Fedders or Freidrich
wall sleeve, use the TWFAK adapter kit.
The chassis and wall sleeve are shipped separate.
Operating Instructions
Check the data specification plate and ensure the proper
voltage and current rating for the type of power plug on the
unit is available. DO NOT REMOVE THE GROUNDING
PRONG FROM THE POWER CORD. See Figure 3 for the
types of acceptable plugs. Do not use an extension cord for
the installation of this product. Refer to the data specifica-
tion plate for electrical requirements.
Figure 3
LCDI or AFCI Power Cords
Underwriters Laboratories (UL) and the National Electric
Code (NEC) now require power cords that sense current
leakage and can open the electrical circuit to the unit. In the
event, the unit does not operate, check the reset button
located on or near the head of the power cord as part of the
normal troubleshooting procedure.
WARNING
To prevent property damage, personal
injury or death, do not remove grounding
prong from plug. Follow all operating
instructions.
Installation Instructions
To ensure that the unit operates safely and efficiently, it
must be installed, operated, and maintained according to
these installation and operating instructions and all local
codes and ordinances, or, in their absence, with the latest
edition of the National Electrical Code. The proper instal-
lation of this unit is described in the following sections.
Following the steps in the order presented should ensure
proper installation.
NOTE: Attach the supplied 1/2” x 1” x 14” foam prior to
installation of unit. Remove adhesive backing strip and
place the foam on unit as shown in Figure 4.
FOAM
Figure 4
SLEEVE INSTALLATION
In order for condensate water to drain properly inside the
unit, the sleeve must be installed properly:
• Level from right to left.
• A slight downward pitch from the indoor side to the
outdoor side as shown in Figure 5.
Refer to the Installation Instructions supplied with the wall
sleeve for a complete description of the installation proce-
dure.
Wall
Sleeve
Outside
Wall
OutsideInside Level
1/4 Bubble
Tilt To
Outside
Figure 5
REAR LOUVER PANEL
A TWKG rear louver panel kit is required for unit installation
into an existing GE 26” wall sleeve. A TWEAK or TWFAK
adapter kit is required for unit installation into an existing 27”
wall sleeve. The rear louver panel directs air flow for proper
unit operation and protects the outdoor coil. The panel must
be installed before installing the chassis. These kits are not
supplied with the unit. Refer to the Installation Instructions
supplied with the rear louver panel kit for a complete
description of the installation procedure.
NOTE: If using a GE wall sleeve, ensure that the rear
enclosure panel is removed before installing the TWKG
panel.
110V 230V 230V
15 amp 15 amp 20 amp

4
CHASSIS INSTALLATION
1. Inspect the ground wire (Figure 6) on the unit and
ensure it is attached to the left side panel. If not, attach
the wire to the panel.
2. Remove the mounting screw from the left hand side of
the existing sleeve (Figure 6). Place the screw through
the eyelet on the unattached end of the ground wire of
the unit and reinsert into its mounting hole.
Ground
Wire
Mounting
Screw
Figure 6
3. Install the 1/2” x 1/2” supplied gasket foam around the
top and two sides of the chassis (Figure 7).
Foam
Figure 7
4. Carefully slide the chassis into the sleeve. Ensure that
the ground wire is not pinched or in the path of the
condenser fan.
5. Fasten the supplied clips to the exposed sides of the
unit using the two #8 x 3/8” blunt sheet metal screws
provided (Figure 8).
Clip Screw
Figure 8
FRONT PANEL INSTALLATION
Discharge Air Grille
Airflow Direction Change - Optional
If you wish to change the direction of airflow from up to
down, remove the four screws holding the Discharge Air
Grille in place (Figure 9). Drop out the grille and rotate 180°.
Ensure the notches on the grille face up. Replace the grille
and secure in place with the removed screws.
Discharge Air
Grille
Screws
(4 places typ.)
Figure 9

5
1. Remove the grille and filter from the front panel (Figure
10). Doing one side at a time, press the tab on the front
panel (Figure 10) with one hand while lifting the grille
with the other.
Figure 10
2. Using the four washer head sheet metal screws pro-
vided, mount the front panel to the chassis through the
front panel mounting holes (Figure 11).
Mounting
Holes
Front
Panel Chassis
Mounting
Holes
Mounting
Holes
Figure 11
3. Reattach the filter and front grille. Place the supplied
knobs onto the proper stem (Figure 12).
Knobs
Figure 12
IMPORTANT NOTES:
1. The unit is equipped with a rubber-grommet-mounted
compressor. These grommets are factory set and
require no adjustment.
2. Obstruction to air flow must be checked and removed.
Check the indoor and outdoor grilles for obstructions.
The unit must be located where curtains, furniture,
trees, or other objects do not block air flow to and from
the unit. If air is obstructed and/or deflected back into
the unit, the air conditioner’s compressor may cycle on
and off rapidly. This could cause damage to the
compressor.
Wiring
Before wiring the unit, please review the following warnings
and cautions.
WARNING
To avoid property damage, personal injury
or death due to electrical shock, do not
service this unit without first shutting off
power to the unit from the circuit breaker
and/or removing the unit cord set plug
from the wall outlet.
WARNING
To avoid the risk of property damage,
personal injury or electrical shock, do not
use an extension cord with this unit.
WARNING
To avoid the risk of fire, property damage,
or personal injury, use only copper
conductors.
WARNING
To avoid the risk of personal injury, wiring
to the unit must be properly polarized and
grounded.

6
WARNING
This air conditioner is not meant to provide
unattended cooling or life support for
persons or animals who are unable to
react to the failure of this product.
The failure of an unattended air conditioner
may result in extreme heat in the
conditioned space causing overheating or
death of persons or animals. Take proper
precautions to avoid unattended operation.
VOLTAGE MEASUREMENTS
Before connecting the unit, measure the supply voltage.
Voltage must fall within the voltage utilization range given in
Table 1.
Operating Voltage
Unit Voltage Voltage Utilization Range
Rating Minimum Maximum
230/208 197 253
115 103 126
Table 1
Operating Voltage
Unit Operation
Two rotary knobs (Figure 10) control temperature and
operational modes. They are located to the top left of the
cabinet front.
THERMOSTAT SETTING
C
O
O
L
E
R
C
O
O
L
E
R
W
A
M
E
R
R
The thermostat controls the room temperature by turning
either the compressor or electric heater on and off while the
fan is running. Turn the thermostat control clockwise to
provide a cooler room temperature; turn it counterclock-
wise to provide a warmer one.
NOTE: If the fan cycle switch (see Additional Control
Inputs) is in the CYCLE mode, both the compressor and fan
will cycle on and off during the cooling modes.
OFF OFF
LOW
HEAT
HIGH
HEAT
HIGH
COOL
LOW
COOL
FAN
ONLY
FAN
ONLY
LOW
COOL
HIGH
COOL
MED
COOL
HIGH COOL
This setting provides the most cooling output at the highest
efficiency possible. In this mode the fan runs on high and
the compressor cycles on and off.
OFF
FAN
ONLY
LOW
COOL
HIGH
COOL
MED
COOL
MEDIUM COOL
This setting provides quieter operation than High Cool. In
this mode the fan runs at medium speed and the compres-
sor cycles on and off.
OFF OFF
LOW
HEAT
HIGH
HEAT
HIGH
COOL
LOW
COOL
FAN
ONLY
FAN
ONLY
LOW
COOL
HIGH
COOL
MED
COOL
LOW COOL
This setting dehumidifies the air and provides the quietest
fan operation. In this mode the fan runs at the lowest speed
and the compressor cycles on and off.
OFF
LOW
HEAT
HIGH
HEAT
HIGH
COOL
LOW
COOL
FAN
ONLY
HIGH HEAT
On high heat, the fan runs at its highest speed. In this mode
the electric heater cycles on and off by thermostat.

7
OFF
LOW
HEAT
HIGH
HEAT
HIGH
COOL
LOW
COOL
FAN
ONLY
LOW HEAT
On low heat, the fan runs at its lowest speed and provides
the quietest fan operation. In this mode the electric heater
cycles on and off by thermostat.
OFF OFF
LOW
HEAT
HIGH
HEAT
HIGH
COOL
LOW
COOL
FAN
ONLY
FAN
ONLY
LOW
COOL
HIGH
COOL
MED
COOL
FAN ONLY
This setting circulates air. If the exhaust air option is used,
this setting will exhaust stale indoor air. In this mode, the
fan runs continuously at high speed without compressor
operation.
ADDITIONAL CONTROL INPUTS
NOTE: Not available on all models.
Fan Cycle Switch
The fan cycle switch is located behind the plastic front
assembly underneath the control knob (Figure 13). The fan
cycle switch sets the operational mode of the fan. In the
CONTINUOUS position, the fan will run continuously when-
ever the unit is in the heat or cool mode. In the CYCLE
position, the fan will cycle on and off with the compressor
when the unit is in the cool mode. This switch can only be
set by a servicer.
Fan Cycle
Switch
CO
NTINUO
USCYCLE
Figure 13
Preventative Maintenance
WARNING
To prevent personal injury or death due to
electrical shock, unplug the unit at the wall
outlet or turn off power at the fuse box or
circuit breaker before servicing the unit.
INTAKE AIR FILTER
The intake air filter should be cleaned when it is dirty or at
least once a month. The intake air filter is constructed of
durable polypropylene.
The following procedure is used to remove the intake filter:
Front Grille
Intake Air Filter
Front Panel
Tabs
Figure 14
1. Remove the grille by pressing the tabs one at a time on
the front panel (Figure10) with one hand while lifting the
grille with the other.
2. Remove intake air filter (Figure 14) from front panel.
3. Clean filter with a vacuum or running water. If using
water, please be sure that the filter is not excessively
wet when replaced.
4. Reverse this procedure to reinstall the filter.
COMPRESSOR
The compressor is hermetically sealed, permanently lubri-
cated and requires no additional oiling.
FRONT PANEL AND GRILLE
The front panel and grille can be cleaned with a mild soap
or detergent. Do not use hydrocarbon-based cleaners (e.g.
acetone, benzene, naphtha, gasoline, etc.) to clean the
front panel or grille. Use care when cleaning the control
area. Do not use an excessively wet cleaning cloth.

SCHEDULED MAINTENANCE
To achieve continuing top performance and high efficiency,
a regular cleaning/inspection schedule must be estab-
lished. Maintaining this schedule can be accomplished by
either a local maintenance staff or an authorized servicer
and must follow the instructions described in this manual.
• If the unit is operated in a dusty climate, dust may
collect in the basepan and clog the condenser coil. It is
advisable to remove the unit from the sleeve and
thoroughly clean the basepan and condenser coil on a
periodic basis.
• If the unit is installed ocean side or in a corrosive
atmosphere, its life may be greatly reduced by the
corrosive environment. Under these conditions, the
unit should be removed from the sleeve and completely
cleaned once a year. At that time any scratches or
blisters on the painted surfaces should be sanded and
repainted.
Normal Operating Sounds and
Conditions
POPPING OR GURGLING SOUNDS
This sound is the refrigerant traveling through the lines.
This is a normal sound which may be heard for a few
seconds after the unit shuts off.
WATER TRICKLING SOUNDS
This sound is produced by the water as it is picked up and
run over the coils. This procedure improves the efficiency
of the unit and helps with water removal.
WATER DRIPPING
Water will collect in the basepan during high humidity days.
STARTING DELAY
You may notice a short delay in the startup if you try to
restart the unit too soon after turning it off or if you adjust the
thermostat right after the compressor has shut off. This
delay protects the compressor.
Obtaining Service
In the unlikely event this unit requires repair or servicing
beyond what is covered in this manual, contact an autho-
rized service organization.
To obtain an authorized servicer, contact your sales repre-
sentative or agency.
2001-2004 Goodman Company, L.P.
Effective: August 2004
Part No. 20350002
Printed in USA