During Normal Operation - White Rodgers 1F60-22 Installation & Operating Manual

Thermostat
R W
Limit
Limit
Trans-
Limit
former
24 v
Neutral
Hot
120 v
Limit
A
Typical wiring of gas furnace
showing possible limit switch location
Figure 7. Relay Installation
Gas
Valve
Trans-
former
Hot
Typical wiring method using SPNO
relay and limit in gas furnace
Thermostat
R W
Limit
Relay
Gas
Valve
24 v
Neutral
120 v
B
PROCEDURE 2. Short
battery life may also be
caused by repeated power
interruptions. These furnaces
cause power interruptions

during normal operation:

Bryant, Payne, Day & Night,
and Carrier Series
579 585
580 48KLA
If you own one of these
systems, you should install
the resistor that was included
with your thermostat using
one of the three following
methods (depending on
system type).
31