Armstrong World Industries 243 Accessories, Magic-Pak HW/HWC, ALPKT389-2 L.P. Gas Conversion Kit

Models: 183 182 203 123 122 242 302 243

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ACCESSORIES

7-14

TABLE 7-6

ALPKT389-2 Orifices

 

 

 

Model

Propane Orifice Size

 

 

 

 

26HW/HWC

#65

 

 

 

 

38HW/HWC

#64

 

 

 

 

51HW/HWC

#62

 

 

 

 

64HW/HWC

#62

 

 

 

 

Magic-Pak: HW/HWC

ALPKT389-2 L.P. Gas Conversion Kit

The ALPKT389-2 kit contains the following parts to convert the 26, 38, 51 and 64HW/HWC series gas furnace from natural gas to propane gas. For altitudes from 2000 - 4500 feet, a high altitude kit as supplied by the manufacturer must be used (see page 7-15).

TABLE 7-5

ALPKT389-2 Parts List

 

 

 

 

 

Part

Quantity

 

 

 

 

Conversion Plate

1

 

 

 

 

Gas Conversion Label

1

 

 

Air Shutter Adjustment Label

1

 

 

 

 

Installation Instructions

1

 

 

Adapter Kit for White-Rodgers 25K Gas Valve

1

 

 

#65 Main Burner Orifices

3

 

 

#64 Main Burner Orifices

4

 

 

#62 Main Burner Orifices

6

 

 

Gas Valve Conversion Label

1

 

 

 

Although the equipment is suitable for operation with propane gas (after the conversion kit has been installed), certain precautions must be observed because of the distinct burning characteristics of propane gas. The following problems may be encountered:

1.Burning back at the orifices with a loud roar

2.Loud popping upon extinction of the burner

3.Flame rollout at the time of the ignition These problems can be caused by:

1.Low gas pressure

2.Improper air adjustment

3.Incorrect burning rate

The furnace has a regulator in the gas valve. A regulator is also required on the propane tank. Another regulator may be required at the house or the unit.

The minimum permissible gas supply pressure to the furnace is 11" W.C. for the purpose of input adjustment. The maximum permissible gas pressure to the gas valve is 14" W.C.

SRM-HW/HWC

8/99

Page 136
Image 136
Armstrong World Industries 243, 302 Accessories, Magic-Pak HW/HWC, ALPKT389-2 L.P. Gas Conversion Kit, ALPKT389-2 Orifices