NOTES:
1. Outdoor Thermostat 1 should be the first to close and the last
to open.
2. Connect the white and brown wires from the air handler if
Outdoor Thermostat 2 is not used.
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage, personal injury or death.
Thermostat Connection—Cooling Unit with Optional Heat Kits of 10kW and Below
IMPORTANT: When matching the WAHME air handlers to a single-stage cooling unit or heat pump, remember to connect the Y/Y2
thermostat connection on the variable speed board (VSTP) to the thermostat. Connecting Y1 will result in 1
and may cause the contactor to chatter.
To Comfort Alert
Module (If Used)
Contactor Coil
NOTES:
1. Outdoor Thermostat 1 (OT-1) should be the first to close and
the last to open.
2. Jumper W1 and W2 together if OT-2 is not used.
14
3. Remove this wire when using an outdoor thermostat.
4. EHR—Emergency heat relay (optional)
WARNING
HIGH VOLTAGE!
Goodman 6 Long
Room Thermostat
W
Y
G
R
Y
To Condensing Unit
24V Connections
BU
3. Remove this wire when using an outdoor thermostat.
4. EHR—Emergency heat relay (optional)
5. OT—Outdoor thermostat (optional)
st
stage cooling blower speed
#18 Gauge - 4 Wire With Cooling,
3 Wire Without Cooling
Unit
C
R
R
R
G
G
W
W1
W2
Y1
Y
Y2
Y
OR
BU
TB
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