Lennox BCE3M*C SERIES Installation Instructions Manual page 16

THERMOSTAT
R
G
SEE
NOTE
Y
COOLING ONLY APPLICATION
THERMOSTAT
R
G
SEE
Y
NOTE
COOLING APPLICATION WITH
ELECTRIC HEAT
NOTE - Connect common wire only if required (Refer to the appropriate thermostat installation instructions).
Page 16 of 23
AIR HANDLER
BU
AIR
CONDITIONER
UNIT
AIR HANDLER
CONNECT COMMON
WIRE ONLY IF
(REFER TO THE
W
APPROPRIATE
THERMOSTAT
INSTALLATION
BK
INSTRUCTIONS)
BU
AIR CONDITIONER
UNIT
Figure 19. Low Voltage Connections
THERMOSTAT
SEE
NOTE
THERMOSTAT
REQUIRED
Issue 1720
AIR HANDLER
R
G
BU
W
HEAT ONLY APPLICATION
AIR HANDLER
R
G
BU
BK
W
HEAT PUMP APPLICATION WITH
ELECTRIC HEAT
HEAT PUMP
UNIT
507621-01