Honeywell PRESTIGE THX9321 - Manual (Page 137)

THX9321 PRESTIGE ® 2.0 AND THX9421 PRESTIGE ® IAQ WITH EIM
137 68-0311—02
Fig. 317. Inserting wires in thermostat terminal block.
Fig. 318. Inserting wires in EIM terminal block
IMPORTANT
Use 18–22 gauge thermostat wire.
Table 15. Wiring Diagrams by System Type.
System Type
Wiring Diagram
Reference
Standard Heat/Cool 319
Heat Pump with Auxiliary Heat 320
Geothermal radiant heat 321
Heat pump system with one transformer 322
2-heat / 2-cool conventional system with
one transformer
323
Heat pump system with two transformers 324
Geothermal radiant heat, geothermal
forced-air and backup heat with one
transformer
325
Heat pump with oil forced air backup. 331
Geothermal radiant heat with geothermal
forced air and backup heat using separate
transformer for the radiant heat
332
Wood stove-fired hot water fan coil with
forced air furnace backup heat
333
Hot water radiant heat with backup heat
(single zone application)
334
Hot water radiant heat with backup forced
air heat. Zoned with forced air zone panel
and zone valves
335
Hot water radiant heat with backup forced
air heat. Zoned with forced air zone panel
and hot water panel.
336
Hot water fan coil with forced air furnace
backup heat.
337
Wood stove with heat pump and backup
electric strips. (For applications in which
the thermostat only needs to run the
blower fan when stove is hot).
338
IAQ Equipment 339–344
Wired Remote Sensors 350–354
Table 16. Zoning Diagrams by System Type.
System Type
Wiring Diagram
Reference
Prestige IAQ thermostats with an HZ432
zone panel and no IAQ control
355
Prestige IAQ controlling one zone with an
HZ432 zone panel and a TrueSTEAM
humidifier
356
Ventilation with zoning 357
Prestige IAQ with an HZ432 zone panel
and a TrueDRY dehumidifier
358
Wallplate
R
C
Y
Y2
G
W O/B
W2 AUX1
W3 AUX2
A L/A