Honeywell Prestige 2.0 THX9421 Manual page 148

®
THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE
THERMOSTAT/EIM
TO THERMOSTAT
CONV
W
W2
W3
L
CONFIGURE THE THERMOSTAT TO ENERGIZE THE FAN
1
WITH A CALL FOR HEAT.
THE THERMOSTAT WILL ENERGIZE ONLY THE FAN WITH
2
A CALL FOR STAGE 1 HEAT. IF THE WOOD STOVE IS HOT,
HEAT COMES FROM THE FAN COIL. IF THE WOOD STOVE
IS COLD, ONLY THE FAN RUNS. THE THERMOSTAT WILL
UPSTAGE TO THE FURNACE AS NEEDED TO MAINTAIN
THE TEMPERATURE.
Fig. 338. Wood stove-fired hot water fan coil with forced
air furnace backup heat.
68-0311—07
®
1
FURNACE
W
Y
G
R
C
2
M31482
IAQ WITH EIM
THERMOSTAT/EIM
TO THERMOSTAT
CONV
THE BOILER IS CONTROLLING THE CIRCULATOR PUMP
1
IN THIS DIAGRAM.
Fig. 339. Hot water radiant heat with backup heat
148
W
W2
FURNACE RELAY
W3
W
Y
G
L
R
C
(single zone application).
BOILER
3 T
1 T
1
M31483