Greenheck Fan HEAT RECOVERY UNIT WITH EVAPORATIVE COOLING HRE-20 - Manual (Page 26)

26
W1
12
7
6
Y2
Y1
G
C
R
NC C
NC C
NO
NO
Indicator Lights
powered by the ER Unit
Unit On/Off
Frost Control
Economizer
Rotation Sensor
Supply Dirty Filter
Exhaust Dirty Filter
PS2
PS3
NC
NC
NO C
NO C
Dirty Filter Indicator
(Power by Others)
Supply Dirty Filter
Exhaust Dirty Filter
PS2
PS3
Hot
L1
Refer to Pressure Switch for voltage and load ratings .
OPTIONAL ACCESSORIES
Remote Panel Wiring Schematics