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30 VAV-PRC003-EN
Electrical Data
and Connections
Figure 34. Typical relay board wiring
Figure 33. Relay board wiring
1
3
2
9
12
15
R
5
13
4
8
10
11
14
6
7
TB1
Relay Board TB2
c
R
h
GY1Y2W1W2/0AUXNO
NC
NOT USED
24 VAC CLASS 2 COOL UNIT
24 VAC CLASS 2 HEAT UNIT
COOL 1
COOL 2
HEAT 1
HEAT 2
SUPPLY FAN
SPARE OUTSIDE AIR
HEAT/COOL
OR ICS
2 HEAT/2COOL HEAT PUMP
REV VALVE
AUX HEAT
COMP 2
COMP 1
HVAC Unit
24V Terminal Strip
R
G
Y1
Y2
W1
W2
Relay Board TB2
1
3
2
R
5
4
6
7
TB1
c
R
h
GY1Y2W1
W2/0