Honeywell PRESTIGE THX9321 System Installation Manual page 17

Economizer Module wiring guides
Typical wiring of a W7213/W7214 Economizer Module for a heat pump system,
using a Prestige THX9321 thermostat or Equipment Interface Module.
W7213/W7214 Economizer Module
(See wiring guidelines provided with the product)
O or B
N
3
4
1
2 & 5
TR1
TR
Typical wiring of a W7212 Economizer Module for a conventional heating system,
using a Prestige THX9321 thermostat or Equipment Interface Module.
W7212 Economizer Module
(See wiring guidelines provided with the product)
N
3
4
1
2 & 5
TR1
TR
"A" or "L/A" terminal must be configured for Economizer in the installer setup (ISU 2220).
1
These terminals are powered by the cooling transformer (Rc terminal).
2 Terminal AUX 2 is present only on the Equipment Interface Module.
69-2490_B.indd 17
THX9321/9421 Prestige
Transformer
R
120 24
VAC C
VAC
Transformer
R
120
24
C
VAC VAC
17
IAQ and RF EIM
®
Rooftop Unit
O/B N Y1 Y2 AUX AUX 2
O/B L/A Y Y2 AUX AUX 2
1 2
Thermostat/EIM
MCR32956
Rooftop Unit
N Y1 Y2 W1 W2
A Y Y2 W W2
1
Thermostat/EIM
MCR32957
69-2490—03
G
G
G
G
7/13/2011 1:42:00 PM