A25 Series Warm Air Control with Manual Reset Product/Technical Bulletin
3
W
iring
WARNING:
Shock hazard.
To avoid
electrical shock or damage to
equipment, disconnect all power
before making wiring
connections.
If available, follow the instructions for the unit onto
which the A25 will be installed. Make all wiring
connections only with copper conductors and in
accordance with the National Electrical Code and local
regulations. Refer to the label inside the A25’s cover
for the maximum electrical rating.
Models A25CN and A25CP
SPDT (Single Pole Double Throw) Units
The wiring terminals on the SPDT (Single Pole
Double Throw) models are color coded:
Red is common.
The red to yellow circuit closes on
temperature increase.
The red to blue circuit opens on temperature
increase.
Refer to Figures 3 and 4 for terminal identification and
typical wiring connections.
When the reset lever is pressed during normal
operation, the trip free contacts are activated, the red
to blue contact opens and the auxiliary red to yellow
contact closes. At this point, the auxiliary system
will activate.
Models A25AN and A25AP
SPST (Single Pole Single Throw) Units
When the temperature increases to above the
setpoint, the circuit opens. When the reset lever is
pressed after the sensed temperature decreases to
approximately
20F° (11C°) below the setpoint, the circuit closes.
Refer to Figures 5 and 6 for terminal identification and
typical wiring connections.
IMPORTANT:
Only use the terminal screws
furnished with the A25 (8-32 x
1/4 in. binder head). Use of
other screws will void warranty,
may damage switch terminals,
and result in improper
connections.
