*For a warming thermostat, 1
should be the red wire and 2
should be the black wire
*For a cooling thermostat, 1
should be the black wire and 2
should be the red wire
External
central heat
blower
1*
2*
Central
blower
speed
switch
Blower
control
thermostat
Figure 37: Wiring for the central heat system
Terminal
block
18 ga.
LVT
Thermal
switch
110 V
black
black
white
yellow
white
white
Bare
black
*For a warming thermo-
stat, 1 should be the red
wire and 2 should be
the black wire
*For a cooling thermo-
stat, 1 should be the
black wire and 2 should
be the red wire
External
central heat
blower
Central
blower
speed
switch
Blower
control
thermostat
Internal
blower
control
Draft
damper
thermostat
Draft
damper
motor
Transformer
Internal
blower
Thermal
switch
18 ga
LVT
1*
2*
Figure 38: Wiring for all systems combined
110 V
black
black
white
white
black
white
yellow
Bare
24 V
ONYX AP Owner's Manual
RSF Woodburning Fireplaces
29