Alpkt389-2 l.p. gas conversion kit – Armstrong World Industries HWC PREMIER 183 User Manual
Page 136
7-14
A C C E S S O R I E S
Magic-Pak: HW/HWC
SRM-HW/HWC 8/99
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).
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.
TABLE 7-5
ALPKT389-2 Parts List
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P
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2
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#
6
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W
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6
2
5
6
#
C
W
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W
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8
3
4
6
#
C
W
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1
5
2
6
#
C
W
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/
W
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4
6
2
6
#
TABLE 7-6
ALPKT389-2 Orifices