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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
113 68-0311—01
Fig. 225. Hot water radiant heat with backup forced air
heat. Zoned with forced air zone panel and hot water
panel.
Fig. 226. Hot water fan coil with forced air furnace backup
heat.
M31485
HOT WATER
RELAY PANEL
RH W
W
W2
W3
W
Y
G
R
C
HZ311, HZ322, OR HZ432 ZONE PANELS COULD BE USED TO
CONTROL A FORCED AIR FURNACE ZONED WITH DAMPERS.
AN AQ2000 SERIES HOT WATER ZONE PANEL OR OTHER
RELAY-BASED HOT WATER ZONE 3 PANEL COULD BE USED.
L
TO THERMOSTAT
THERMOSTAT/EIM
CONV
ZONE 1
ZONE 1
1
2
1
2
RELAY
3
1
W
W2
W3
W
Y
G
R
C
CONFIGURE THE THERMOSTAT TO ENERGIZE THE FAN
WITH A CALL FOR HEAT.
THE BOILER IS CONTROLLING THE CIRCULATOR PUMP
IN THIS DIAGRAM.
L
TO THERMOSTAT
THERMOSTAT/EIM
CONV
FURNACE
M31486
1
2
2
1
BOILER
T
T
RELAY
3
1