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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
117 68-0311—01
Typical wiring of a W7213/W7214 Economizer Module for a heat pump system, using a Prestige THX9321 thermostat or
Equipment Interface Module.
Fig. 237. Wiring a W7213/W7214 Economizer Module for a heat pump system.
Typical wiring of a W7212 Economizer Module for a conventional heating system, using a Prestige THX9321 thermostat or
Equipment Interface Module.
Fig. 238. Wiring a W7212 Economizer Module for a conventional heating system.
1 “A” or “L/A” terminal must be configured for Economizer in the installer setup (ISU 2220). These terminals are powered by the
cooling transformer (Rc terminal)
2 Terminal AUX 2 is present only on the Equipment Interface Module.
120
VAC
O/B N Y1 Y2 AUX AUX 2 G
24
VAC
O or B
N
3
4
1
2 & 5
TR1
TR
Rooftop Unit
Transformer
O/B L/A Y Y2 AUX AUX 2 G
Thermostat/EIM
R
C
W7213/W7214 Economizer Module
(See wiring guidelines provided with the product)
21
M32956
A
120
VAC
NY1Y2W1W2G
24
VAC
N
3
4
1
2 & 5
TR1
TR
Rooftop Unit
Transformer
AYY2WW2G
Thermostat/EIM
R
C
W7212 Economizer Module
(See wiring guidelines provided with the product)
1
M32957A