User Guide

7- On Robertshaw 7200 gas valve, depress lever on
gas control and move to ON and release. For White
Rodgers 36E gas valves, move switch to ON.
8- Replace unit access panel.
9- Turn on all electrical power to unit.
10- Set thermostat to desired setting. See figure 3.
11- If the furnace will not operate, follow the instructions
“To Turn Off Gas To Unit” and callyour service techni-
cian or gas supplier.
B-To Turn Off Gas To Unit
1- Set thermostat to lowest setting. See figure 3.
2- Turn off all electrical power to unit if service is to be
performed. See figure 4.
3- Remove heat section access panel.
4- On Robertshaw 7200 gas valve, depress lever on
gas control and move to OFF and release. For White
Rodgers 36E gas valves, move switch to OFF.
5- Replace unit access panel.
FOR UNIT TO
OPERATE DISCONNECT
SWITCH MUST
BE IN “ON” POSITION
TYPICAL
FUSE/DISCONNECT
SWITCH BOX MOUNTED
ON FURNACE
GAS PIPING
HORIZONTAL APPLICATION
GAS PIPING
DOWNFLOW APPLICATION
*Gas connector may be
used for Canadian
installationif acceptable
by localauthority having
jurisdiction.
Inspect and clean air filters each month. Filters must
be cleaned when dirty to assure proper furnace op-
eration and maintain efficiency.
A-Cleaning Reusable Foam Filter
1- Turn off electrical power to furnace.
2- Remove blower access panel. Wait for blower to stop.
3- Remove filter by sliding up and out of channel.
4- Wash filter with water and a mild detergent. For in-
creased efficiency, filter media should be sprayed
with Filter Handicoater when dry. Filter Handicoater
is RP products No. 418 and is available as Lennox
part No. P-8-5069. If replacement filters is needed,
use Lennox part no. P-8-7831 for 20” x 25” (508 x
635mm) filter.
5- Reinstall filter. Slide filter into top channel and drop
into lower channel.
IMPORTANT-Do not replace foam reusable filters
with throw-away type filters.
6- Replace blower access panel.