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WIRING DIAGRAMS
Heating Systems
FAN RELAY
G
Y
W RH RC
Tape Off **
Tape Off
* If replacing a Honeywell TM-11,
tape off wire "R"; connect wire "B"
to terminal "RH."
** If replacing a Honeywell thermostat
with a clock wire "C," tape off wire "C"
Heating/Cooling Systems
4- or 5-Wire with One Transformer
FAN RELAY
G
Y
W RH RC
*
Tape Off
* If both Y and C wire are
present, tape off "C" wire.
COOLING COMPRESSOR
HEATING CONTROL
HEATING TRANSFORMER
COOL TRANSFORMER
COOLING COMPRESSOR
HEATING CONTROL
HEATING TRANSFORMER
COOL TRANSFORMER
Cooling Systems
FAN RELAY
COOLING COMPRESSOR
G
Y
W RH RC
*
* If both Y and C wire are
present, tape off "C" wire.
Heating/Cooling Systems
5-or 6- Wire with Two Transformers
FAN RELAY
G
Y
W RH RC
Tape Off
*
* If both Y and C wire are
present, tape off "C" wire.
HEATING CONTROL
HEATING TRANSFORMER
COOL TRANSFORMER
COOLING COMPRESSOR
HEATING CONTROL
HEATING TRANSFORMER
COOL TRANSFORMER
2
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