GPG16M Installation Instructions

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Check the burner flames for:
1. Good adjustment
2. Stable, soft and blue
3. Not curling, floating, or lifting off.
Burner Flame
CONDENSER, EVAPORATOR, AND INDUCED DRAFT MOTORS
Bearings on the air circulating blower motor, condenser motor and the combustion fan motor are permanently lubricated. No additional
oiling is required.
FLAME SENSOR (QUALIFIED SERVICER ONLY)
A drop in the flame current can be caused by a nearly invisible coating on the flame sensor. This
coating, created by the fuel or combustion air supply, can be removed by carefully cleaning the
flame sensor with steel wool.
NOTE: After cleaning, the microamp signal should be stable and in the range of 4 - 6 microamps
DC.
FLUE PASSAGES (QUALIFIED SERVICER ONLY)
At the start of each heating season, inspect and, if necessary, clean the unit flue passage.
CLEANING FLUE PASSAGES (QUALIFIED SERVICER ONLY)
1. Shut off electric power and gas supply to the unit.
2. Remove burner assembly by disconnecting the gas line and removing the manifold bracket
from the partition panel.
3. Remove the flue from the induced draft blower and the collector box cover from the
partition panel.
4. The primary heat exchanger tubes can be cleaned using a round wire brush attached to a
length of high grade stainless steel cable, such as drain cleanout cable. Attach a variable
speed reversible drill to the other end of the spring cable. Slowly rotate the cable with the drill and insert it into one of the
primary heat exchanger tubes. While reversing the drill, work the cable in and out several times to obtain sufficient cleaning.
Use a large cable for the large tube, and then repeat the operation with a small cable for the smaller tube. Repeat for each
tube.
5. When all heat exchanger tubes have been cleaned, replace the parts in the reverse order in which they were removed.
6. To reduce the chances of repeated fouling of the heat exchanger, perform the steps listed in “Startup, Adjustments, and
Checks”.
MAIN BURNER FLAME (QUALIFIED SERVICER ONLY)
Flames should be stable, soft and blue (dust may cause orange tips but must not be yellow). The flames must extend directly outward
from the burner without curling, floating or lifting off.
At least once a year, prior to or during the heating season, make a visual check of the burner flames.
NOTE: This will involve removing and reinstalling the heat exchanger door on the unit, which is held by two screws. If you are uncertain
about your ability to do this, contact a qualified servicer.
If a strong wind is blowing, it may alter the airflow pattern within the unit enough that an inspection of the burner flames is not
possible.
CLEANING BURNERS
1. Shut off electric power and gas supply to the unit.
2. Remove the screws securing the manifold to the burner
retention bracket. Remove the manifold and rotate each
burner counterclockwise to remove.
3. Remove the burners.
4. Use a bottle brush to clean burner insert and inside of the
burners.
5. Replace burners and manifold, inspect the burner assembly
for proper seating of burners in retention slots.
6. Reconnect electrical power and gas supply.
For further information on the yearly inspection, consult the
User Manual. It is recommended that a qualified servicer inspect
and service the unit at least once each year.
Turn the unit on at the thermostat. Wait a few minutes, since
any dislodged dust will alter the normal flame appearance. Flames
should be predominantly blue and directed into the tubes. They
should not be yellow. They should extend directly outward from
the burner ports without curling downward, floating or lifting
off the ports.
Flame
Sensor
Flame Sensor