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Installation/Configuration
HM1 HM2
6
Y
G
W
RC
RH
D
C
J
I
M
K
L
HM1 W RHRC G Y HM2 6
1
R
C
G
Y
3
2
1
From 24 VAC cooling transformer
2
From fan relay
3
From cooling system
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
Figure 7 – Typical wiring diagram for three-wire cooling system