Amana PGA**C Installation Instructions Manual Download Page 10

10

8. The gas valve and combustion blower will be de-

energized when the thermostat opens.

9. There is an adjustable Heat Fan OFF of approximately

60/90/120/150 second delay (factory set at 120). The
control module will de-energize the blower once the
selected time has elapsed. This allows any additional
heat in the heat exchanger to be transferred to the
conditioned space.

X. Cooling Sequence of Operations

NORMAL SEQUENCE OF OPERATIONS - COOLING

1. Thermostat calls for cooling. The compressor and

outdoor fan are energized.

2. Approximately six seconds later, the indoor fan starts.

3. The unit will deliver cooling to the conditioned space until

the thermostat is satisfied.

4. The compressor and outdoor fan will be de-energized

when the thermostat opens.

5. The indoor fan continues to run for approximately 30

seconds after the thermostat is satisfied. This allows
additional cooling from the indoor coil to be transferred
to the conditioned space. Then, the indoor fan stops.

Xl. Startup and Adjustment

HEATING STARTUP

GENERAL INFORMATION
This unit is equipped with an electronic ignition device to light
the pilot which then lights the burners. It also has a power
vent blower to exhaust combustion products.

On new installations, or if a major component has been
replaced, the operation of the unit must be checked.

Check unit operation as outlined in the following instruc-
tions. If any sparking, odors, or unusual sounds are encoun-
tered, shut off electrical power and recheck for wiring errors,
or obstructions 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-
rectly adjusted to obtain the proper number of heating cycles
per hour and to prevent the room temperature from over-
shooting the room thermostat setting. Heat anticipator must
be set at 0.4 amps.

ROLL-OUT PROTECTION CONTROL
If the flames from the burners are not properly drawn into the
heat exchanger, a roll-out protection device will open, cut-
ting power to the gas valve. The roll-out protection device is
located on the side of burner box (Figure 9). The reason for
elevated temperatures at the control should be determined
and repaired prior to resetting this manual reset control.

WARNING

To prevent death, personal injury or property
damage due to fire or explosion,  before
manually resetting the roll-out protection
device, a qualified servicer must investigate
the reason for the roll-out protection device
to open.

Burner

Box

Roll-Out

Protector

Figure 9

Rollout Protection

SECONDARY LIMIT CONTROL
A second limit control is placed on the blower scroll. This
control will open due to elevated temperature caused by the
blower failing. The reason for elevated temperatures at the
control should be determined and repaired prior to resetting
this manual reset control. The secondary limit control is
located on the top of the blower scroll assembly. (Figure 10)

If the power to the unit is interrupted during the heating cycle,
it may cause the secondary limit to trip. To reset, press the
red button on the limit.

Blower 

Compartment

Access Door

Blower

Assembly

Secondary

Limit Control
Reset Button

C

o

n

d

en
ser

 C
o

il

Du
c

t

O

p

en
in

g

Figure 10

Secondary Limit Control (Top View)

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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