Aerovent IM-155 - Manual (Page 3)

3 Aerovent IM-155
Two-Way Elementary Wiring Diagram
The Two-Way Heat Saver is designed to recirculate 100% or exhaust. The recirculation dampers and exhaust dampers are auto-
matic. The operation is changed by reversing the rotation of the fan/motor.
Three-Way Elementary Wiring Diagram
460V 230V
115V
FSR
FSR
13
OL
Exhaust Fan
Starter
Supply Fan
Starter
To damper motor (blk)
To damper motor
To damper motor (vio)
To discharge sensor (B)
To discharge sensor (R)
and damper motor (vio)
H 2 2 3 6 7 9 11 12 10 4
Control Station Terminal
L2
L1
L3
R
R
R
F
F
F
T1
T2
T3
Fan
Motor
* Electrical interlocks
not furnished on
size 00 starters
*
460V 230V
115V
OL
Reverse
Forward
L2
L1
L3
R
R
R
F
F
F
T1
T2
T3
Fan
Motor
FSR
FSR
off
for rev int.
int.
NOTE: The fan must be allowed to stop before
the motor rotation is reversed. Do not switch
any unit from exhaust to recirculate or supply
without allowing the fan blades to stop rotating.