8
HM1W RHRC G Y HM26
W
RH
123
HM1 HM2
6YGWRC RH
EH
JI
M
K
L

WIRING DIAWIRING DIA

WIRING DIAWIRING DIA

WIRING DIAGRAMSGRAMS

GRAMSGRAMS

GRAMS

All wiring diagrams are for typical systems only. Refer to equipment manufacturers' instructions for specific system wiring
information.
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.
1 From heating system
2 From 24 VAC transformer
3
Red jumper wire (provided)
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
Figure 3 – Typical wiring diagram for heating only, single transformer system