Thermostat Wiring - Heat Controller HBH Series Installation, Operation & Maintenance Manual

Heat Controller, Inc.
Electrical - Thermostat Wiring
Thermostat Installation - The thermostat should be located
on an interior wall in a larger room, away from supply duct
drafts. DO NOT locate the thermostat in areas subject to
sunlight, drafts or on external walls. The wire access hole
behind the thermostat may in certain cases need to be
sealed to prevent erroneous temperature measurement.
Position the thermostat back plate against the wall so that it
appears level and so the thermostat wires protrude through
Figure 16: Thermostat Connection
Connection to CXM Control
ATP32U03 Thermostat
Compressor-Stage 1
Compressor-Stage 2
Reversing Valve
Fan
24Vac Hot
24Vac Com
Field Wiring
Connection to DXM Control
Factory Wiring
ATP32U03 Thermostat
Y1
Y2
O
Reversing Valve
Fan
G
24Vac Hot
R
C
24Vac Com
AL
CXM1
Y1
Y2
O
G
R
C
AL
DXM1
COM 2
Y1
Y2
O
G
R
C
AL1
HBH SERIES
the middle of the back plate. Mark the position of the back
plate mounting holes and drill holes with a 3/16" (5mm)
bit. Install supplied anchors and secure plate to the wall.
Thermostat wire must be 18 AWG wire. Wire the appropriate
thermostat as shown in Figure 16 to the low voltage terminal
strip on the CXM control board. Practically any heat pump
thermostat will work with Heat Controller units, provided it
has the correct number of heating and cooling stages.
CXM2
Y
Y
O O
G
G
R R
C
C
AL AL
DXM2
COM 2
Y
O
G
R
C
AL1
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IOM Manual