White Rodgers 1F60-22 Installation & Operating Manual page 30

many registers closed. Check your
system to ensure that there are no airflow
problems.
If you continue to experience short
battery life after fixing airflow problems,
your furnace has a limit switch that
functions even when airflow is adequate.
In this case, a 24 V single-pole , normally-
open (SPNO) relay must be added to the
system using the following procedure.
CAUTION
A qualified service person
should perform this installation.
30
1. Disconnect 120v AC power from the
system.
2. Obtain a 24v SPNO relay (No. 8A04-
1).
3. Connect the limit switch to the
contact side of the relay (see fig. 7,
part B ).
4. Reconnect power to the system. Test
the system and thermostat (see
TESTING YOUR THERMOSTAT).