Amana PGA**C Installation Instructions Manual Download Page 14

14

NOTE: After cleaning, the microamp signal should be in the
range listed in Specification Sheet.

Burner 

Assembly

Pilot
Tube

Flame Sensor

Ignitor

Figure 16

Ignitor and Flame Sensor

FLUE PASSAGES (QUALIFIED SERVICER ONLY)
At the start of each heating season, inspect and, if neces-
sary, 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 brackets from the partition
panel.

3. Remove the flue from the induced draft blower and the

collector box 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 “Start-up and
Adjustment”.

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 (Figure 17).

Check the burner flames for: 
1. Good adjustment
2. Stable, soft and blue 
3. Not curling, floating, or lifting off. 

Figure 17

Burner Flame

WARNING

To avoid death or personal injury due to
electrical shock, do not remove any internal
compartment covers or attempt any
adjustment. Contact a qualified servicer at
once if an abnormal flame appearance
should develop.

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 several 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 OF BURNERS

1. Shut off electric power and gas supply to the unit.

2. Remove the screws holding the burner retention bracket

in place.

3. Remove the burners.

4. Use a bottle brush to clean burner insert and inside of the

burners.

5. Replace burners and burner retention bracket, inspect

the burner assembly for proper seating of burners in
retention slots.

6. Reconnect electrical power and gas supply.

CAUTION

Label all wires prior to disconnection when
servicing controls.  Wiring errors can cause
improper and dangerous operation.

CAUTION

Verify proper operation after servicing.

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.

Summary of Contents for PGA**C

Page 1: ...nslistedinthisInstallationManualshould not supersede existing practices but should be consid ered as supplemental information ATTENTION INSTALLING PERSONNEL PGA C PGB C and PGD C Single Package Gas El...

Page 2: ...on adjustments alterations service or maintenance when servicing or performingmaintenancetothisunitconsult this manual service manual qualified installer service agency or gas supplier WARNING This pr...

Page 3: ...tional Fuel Gas Code ANSI Z223 1 and National Standard of Canada CAN CGA 2 3 The heating and cooling capacities of the unit should be greaterthanorequaltothedesignheatingandcoolingloads of the area to...

Page 4: ...ALLATIONS ONLY IMPORTANT NOTE The gas electric units will naturally derate itself with altitude Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure This...

Page 5: ...on Installed Ahead Of Gas Valve Reduce coupling 1 2 x 1 8 with 1 8 pipe plug to measure line gas pressure Figure 2 Proper Piping Practice CHECKING THE GAS PIPING CAUTION To prevent personal injury or...

Page 6: ...edropinlinesbetweenregulators andbetween second stage regulator and the appliance Pipe size required will depend on length of pipe run and total load of all appliances Completeinformationregardingtank...

Page 7: ...igure 5 V Electrical Wiring LOCATING THE THERMOSTAT Thermostat should be mounted 5 feet above the floor on a vibration free inside wall in a room or a hallway that has good air circulation Movement of...

Page 8: ...WORK Duct systems and register sizes must be properly designed for the C F M and external static pressure rating of the unit Ductwork should be designed in accordance with the rec ommended methods of...

Page 9: ...n the return air duct s or return air filter grille s Filters installed external to the unit should be sized in accordance with their manufacturer recommendations A throwaway filter must be sized for...

Page 10: ...in or near the blower motors Duct covers must be removed before operating unit HEAT ANTICIPATOR SETTING The heat anticipator in the room thermostat must be cor rectlyadjustedtoobtainthepropernumberof...

Page 11: ...e external to the unit 11 Turn on the electrical power supply to the unit 12 Set the thermostat to desired setting GAS INPUT AND PRESSURES Gas supply pressure and manifold pressure with the burn ers o...

Page 12: ...or minus 0 3 inches water column from the specified pressure Any major changes in flow should be made by changing the size of the burner orifices The measured input rate to the furnace must not excee...

Page 13: ...air circulating blower motor condenser motor and the combustion fan motor are permanently lubri cated No additional oiling is required FLAME SENSOR QUALIFIED SERVICER ONLY A drop in the flame sensing...

Page 14: ...d 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 Figure 17 Check the burner flames for 1 Good ad...

Page 15: ...vers Compressor Sound Blanket Horizontal Filter Kit Propane Gas Conversion Kit High Altitude Kit Standard on PGA C Table 4 Accessory List FUNCTIONAL PARTS Blower Housing Flame Roll Out Switch Blower M...

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