Lennox HS27-024

Page 5
Outdoor Unit
Field Wiring Diagram
YELLOW
(LEADLESS)
Figure 4
Thermostat Designations
R
W1
Y
G
C
R
W
Y
G
C
Thermostat Furnace
Outdoor Unit
Y1 Outdoor Unit
C Outdoor Unit
power
heat
cooling
indoor blower
common
NOTE − see unit wiring diagram for
power supply connections.
NOTE − If the indoor unit is not equipped with blower relay, it must be field−provided and installed (P−8−3251 or equivalent).
Figure 5