Lennox CBA25UH Series - Inspecting and Replacing Filters

Page 27
R
R
G
G
BU
BU
W
W
BK
BK
CONNECT COMMON WIRE
ONLY IF REQUIRED
(REFER TO THE
APPROPRIATE
THERMOSTAT
INSTALLATION
INSTRUCTIONS)
CONDENSING
UNIT
Air Handler
AIR HANDLER
THERMOSTAT
Heat Pump Application With Electric Heat
AIR HANDLER
THERMOSTAT
HEAT PUMP
UNIT
S23 OUTDOOR
THERMOSTAT
(IF USED)
K22 EM HEAT
RELAY
FIGURE 27. Low Voltage Field Wiring Electric Heat