Amana PGB**C Installation Instructions Manual Download Page 13

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6. Turn the gas control valve knob to the OFF position.

Do not force. (Figure 11)

7. Wait five minutes to clear out any gas.

8. Smell for gas, including near the ground. This is

important because some types of gas are heavier
than air. If you have waited five minutes and you do
smell gas, immediately follow the instructions on
the Page 2 of this manual. If having waited for five
minutes and no gas is smell is noted, turn the gas
control valve knob to the  ON position. (Figure 11)

9. Replace the heat exchanger door on the side of the

unit.

10. Open the manual gas valve 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
burners operating must be as specified on the rating
plate.

Checking Gas Pressure

Gas inlet pressure should be checked and adjusted in
accordance to the type of fuel being consumed.

With Power And Gas Off:

1. Connect a water manometer or adequate gauge to

the inlet pressure tap of the gas valve.

Inlet gas pressure can also be measured by removing
the cap from the dripleg and installing a predrilled cap
with a hose fitting. (Figure 12)

With Power And Gas On:

2. Put unit into heating cycle and turn on all other gas

consuming appliances.

Figure 12

Measuring Inlet Gas Pressure

Alternate Method

Secondary Limit Control
On the PGB**C & PGD**C series, 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

Operating Instructions (Heating)

NOTE: Figure 2 illustrates the proper gas valve mount-
ing location.

OFF

ON

Figure 11

Gas Valve (Top View)

1. Close the manual gas valve external to the unit.

2. Turn off the electrical power supply to the unit.

3. Set the room thermostat to its lowest possible set-

ting.

4. Remove the heat exchanger door on the side of the

unit by removing screws.

5. This unit is equipped with an ignition device which

automatically lights the pilot. Do NOT try to light
burner by any other method.

Summary of Contents for PGB**C

Page 1: ...afety practices follow them The precautions listed in this Installation Manual should not supersede existing practices but should be considered as supplemental information ATTENTION INSTALLING PERSONN...

Page 2: ...shut off turn off the manual gas control valve to the unit before shut ting off the electrical supply WARNING To prevent death personal injury or prop erty damage do not use this unit if any part of t...

Page 3: ...rn air entering the unit must be between 50 F and 100 F Provisions must be made for adequate combustion and ventilation air in accordance with Section 5 3 Air for Combustion and Ventilation of the Nat...

Page 4: ...ht bill or indemnity in lieu thereof c Original invoice or certified copy thereof showing trade and other discounts or reductions d Copy of the inspection report issued by carrier representative at th...

Page 5: ...propane gas and for altitude adjust ments Piping IMPORTANT NOTE To avoid possible unsatisfactory operation or equipment damage due to under firing of equipment do not undersize the natural propane ga...

Page 6: ...ring which may result in heat failure This unit and its shut off valve must be disconnected from the gas supply dur ing any pressure testing of that system at test pressures in excess of 1 2 PSIG 3 48...

Page 7: ...er gas pressure depends on three main factors 1 Vaporization rate which depends on a tempera ture of the liquid and b wetted surface area of the container or containers 2 Proper pressure regulation 3...

Page 8: ...re 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 ai...

Page 9: ...sformer primary lead and induced draft blower mo tor leads as shown on the unit wiring diagram Heat Anticipator Setting The heat anticipator in the room thermostat must be correctly adjusted to obtain...

Page 10: ...duct should be provided with an access panel This access should be large enough to inspect the air chamber downstream from the heat exchanger for any smoke or combustion gas leaks A cover should be ti...

Page 11: ...ocated and other spaces of the building Turn on clothes dryers and any appliance not connected to the common venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they w...

Page 12: ...ll Out Protector Figure 9 Rollout Protection IX Heating Sequence of Operations Normal Sequence of Operation Heating 1 Thermostat calls for heat The combustion blower is immediately energized 2 The pre...

Page 13: ...Figure 12 With Power And Gas On 2 Put unit into heating cycle and turn on all other gas consuming appliances Figure 12 Measuring Inlet Gas Pressure Alternate Method Secondary Limit Control On the PGB...

Page 14: ...per cubic foot as deter mined by Step 2 then Input 1000 x 3600 0 34 106 000 BTU per Hour NOTE BTU content of the gas should be obtained from the gas supplier This measured input must not be greater t...

Page 15: ...ishing phases of construction on a new struc ture This type of use may result in pre mature failure of the unit due to extremely low return air temperatures and expo sure to very dirty atmospheres To...

Page 16: ...d with water thoroughly dried and sprayed with a filter adhesive before being reinstalled Filter adhesives may be found at many hardware stores Permanent filters should last several years However shou...

Page 17: ...sonal injury due to electrical shock do not remove any in ternal compartment covers or attempt any adjustment Contact a qualified ser vicer at once if an abnormal flame ap pearance should develop At l...

Page 18: ...ng Flame Roll Out Switch Blower Motor Gas Orifice Blower Wheel Heat Exchanger Burner High Limit Switch Compressor Secondary Limit Condenser Coil Ignitor Flame Sensor Condenser Fan Blade Induced Draft...

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