Lennox G61MPV

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