Emerson 1F97-391 User Manual
Page 12
10
HM1 W RH RC G
Y
HM2 6
G
Y
5
3
2
4
RH
W
1
HM1
HM2
6
Y
G
W
RC
RH
E
D
C
H
J
I
M
K
L
1
From heating system
2
From 24 VAC transformer
3
Red jumper wire (provided)
4
From fan relay
5
From cool system
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
NOTE: Ensure that RED RH/RC jumper wire (provided with
thermostat) is connected between thermostat's RH and RC
terminals for proper operation with this system.
NOTE: For three-wire heat only system, connect terminals
G
G
G
G
G,,,,, W
W
W
W
W
and
RH
RH
RH
RH
RH. For cool only system, connect terminals Y
Y
Y
Y
Y,,,,, G
G
G
G
G and RH
RH
RH
RH
RH.
Figure 4 – Typical wiring diagram for heat only, cool only, & heat/cool single transformer system