Thermostats; Start-Up Procedure; Regular Maintenance; Wiring Diagrams - Whirlpool WAHMS Installation Instructions Manual

THERMOSTATS

NOTE: 2 nd stage heat can be accomplished by using a multistage
heating thermostat or the addition of an outdoor thermostat as
shown in the System Composite diagrams.
Manufacturer's Part Number CHT18-60 is a single-stage cool and
single-stage heat thermostat.
Manufacturer's Part Number HPT18-60 is a single-stage cool,
2-stage heat pump thermostat. The 1
heating and the 2 nd 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.

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 airtight
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.
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage, personal injury or death.
System Composite Diagram—WAHMS 18 to 60—10kW and Below
Heat Pump
C W2 O R
Y
BU W OR Y R
R
Y
OR
W
BU
#18 Gauge - 5 Wire
Outdoor Thermostat (Optional) Closed on Temperature Fall
#18 Gauge - 6 Wire Needed When Outdoor Thermostat Is Used
10
st stage is heat pump

WIRING DIAGRAMS

Goodman 6 Long - top of each page
Typical H/P
Room Thermostat
W2 G
Y O R E
C
G
See
Note 3
BU
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

Goodman 6
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or 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.
NOTE: Do not use these diagrams for WAHMV models. See
installation and operating instructions specifically for WAHMV
models.
WARNING
HIGH VOLTAGE!
Color Codes
R
#18 Gauge - 7 Wire
Y
Unit
BU
BR
OR
R
R Red
W
G
G Green
BR
W White
W
BU Blue
WARNING
HIGH VOLTAGE!
NOTES:
1. Outdoor Thermostat 1
Red
should be the first to
Yellow
close and the last to
Blue
open.
Brown
2. Connect the white and
Orange
brown wires from the air
White
handler if an outdoor
Green thermostat is not used.
3. Remove this wire when
using an outdoor
thermostat.
Wiring is subject to change.
Always refer to the wiring
diagram on the unit for the
most up-to-date wiring.