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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
103 68-0311—01
Fig. 206. Inserting wires in thermostat terminal block.
Fig. 207. Inserting wires in EIM terminal block
IMPORTANT
Use 18–22 gauge thermostat wire.
Table 12. Wiring Diagrams by System Type.
System Type
Wiring Diagram
Reference
Standard Heat/Cool 208
Heat Pump with Auxiliary Heat 209
Geothermal radiant heat 210
Heat pump system with one transformer 211
2-heat / 2-cool conventional system with
one transformer
212
Heat pump system with two transformers 213
Geothermal radiant heat, geothermal
forced-air and backup heat with one
transformer
214
Heat pump with oil forced air backup. 220
Geothermal radiant heat with geothermal
forced air and backup heat using separate
transformer for the radiant heat
221
Wood stove-fired hot water fan coil with
forced air furnace backup heat
222
Hot water radiant heat with backup heat
(single zone application)
223
Hot water radiant heat with backup forced
air heat. Zoned with forced air zone panel
and zone valves
224
Hot water radiant heat with backup forced
air heat. Zoned with forced air zone panel
and hot water panel.
225
Hot water fan coil with forced air furnace
backup heat.
226
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).
227
IAQ Equipment 228–233
Wired Remote Sensors 239–243
Table 13. Zoning Diagrams by System Type.
System Type
Wiring Diagram
Reference
Prestige IAQ thermostats with an HZ432
zone panel and no IAQ control
244
Prestige IAQ controlling one zone with an
HZ432 zone panel and a TrueSTEAM
humidifier
245
Ventilation with zoning 246
Prestige IAQ with an HZ432 zone panel
and a TrueDRY dehumidifier
247
M32387
M32389
R
C
Y
Y2
G
L
W
O/B
W2
AUX1
W3
AUX2