Lennox G61MPV Service Manual page 92

Thermostat
2 Heat / 1 Cool
FM21 Heat Pump / 1
Cool
Field Wiring Applications (Continued)
Jumper Settings (See figure 4)
E20 W915
TWO Intact
SINGLE Intact
TABLE 47
W914 W951
Intact Intact
Intact Cut
Page 92
Wiring Connections
S1 CONTROL OUTDOOR
T'STAT TERM. STRIP
HSXB15
(LSOM)
CONTROL
TERM. STRIP
*Disconnect existing
furnace transformer
and replace with 75VA,
24V transformer if de-
frost option to be used.
75VA, 24V
TRANSFORMER*
NOTE − Wiring connec- NOTE −
tions to outdoor unit and Remove
thermostat made at Y1/Y2 jumper
FM21 control board per for two−stage
FM21 instructions. cooling.
UNIT
FM21