GPGM3 Installation Manual
13
CAUTION
Filters installed external to the unit should be sized in
accordance with their manufacturer recommendations. A
of 300 feet per minute.
Filter Installation
IM P O RTA N T:
-
Unit 2 Ton 2 1/2 Ton 3 Ton 3 1/2 4 Ton 5 Ton
Min. Filter
Size
(1)20 x 20 x 1 (1)20 x 25 x 1 (1)25 x 25 x 1 (2)20 x 20 x 1 2(20) x 25 x1
VENTING
hood prior to operation of the unit.
located in the blower compartment.
1.
2.
3.
4. Using the three screws provided, attach the hood
opening in the utility panel.
SCREEN
HOOD
LOWER
FLUE
HOOD
LIP
1. Locate the second hood.
2. Using the three screws provided, attach the hood
access door.
CONDENSATE DRAIN
-
ing. An external trap must be installed for proper conden-
sate drainage. NOTE: Maximum torque is 10 in-lbs.
DRAIN
CONNECTION
UNIT 2" MINIMUM
FLEXIBLE
TUBING-HOSE
OR PIPE
3" MINIMUM
SEAL IS REQUIRED
NORMAL SEQUENCES OF OPERATION
This unit is equipped with an ignition control that automat-
ically lights the main burner. DO NOT attempt to light the
main burners by any other method.
Single-Stage Models:
NOTE:
1. Thermostat calls for heat.
2. The induced draft blower energizes for a 15-second
pre-purge.