18
19
5. If all of the available system modes function
properly, the test is complete.
Wiring Configurations
The following section provides the various
wiring configurations compatible with the
iDevices
®
Thermostat. Find the configuration that
matches closely to your old thermostat and note
which system type you have for later reference.
Check your old thermostat to see if it has one or
two Red/R wires. If you have one R wire, connect
it to RH and leave the jumper in place. If you
have two, connect RC to RC and R/RH to RH and
remove the jumper.
A. Heat (One, Two or Three Stages)
G wire is not required for hot-water baseboard or steam
radiator systems. If G wire is not connected for a warm air
heating system, Fan On mode will not be available. Connect
W2 wire (2nd Stage Heat) if available. The HUM relay can be
used for Humidification, Dehumidification or as a W3 (3rd
Stage Heat) relay. See page 15 for more information.
Dotted lines indicate an optional wire.
HVAC Type
Stage:
Non-HP |
Type:
HE for electric, HG for gas/oil
systems | Fan wire G optional for HG type
If your system has two R wires,
either RC and RH, or R and RC:
Remove Jumper
between RC and RH
If your system has one R wire:
Keep Jumper
between RC and RH
NC
W2/E
W1/O/B
RH
RC
Y2
Y1
G
NC
W2/E
W1/O/B
RH
RC
Y2
Y1
G
HUM
NC
W2/E
W1/O/B
RH
RC
Y2
Y1
G
L
C
