17
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Never test for gas leaks with an open fl ame. Use
a commercially available soap solution made
specifi cally for the detection of leaks to check
all connections. A fi re or explosion may result
causing property damage, personal injury or
loss of life.
WARNING:
RISQUE D’INDENDIE OU D’EXPLOSION
Le non-respect des avertissements de sécurité
pourrait d’entraîner des blessures graves, la mort
ou des dommages matériels.
Ne jamais utiliser une fl amme nue por vérifi er la
présence des fuites de gaz. Pour la vérifi cation de
tous les joints, utiliser plutôt une solution savon-
neuse commerciale fabriquée spécifi quement pur
la détection des fuites de gaz. Un incendie ou une
explosion peut entraîner des dommages matériels,
des blessures ou la mort.
AVERTISSEMENT:
Leak Check
NOTE:
Optional fuel inlet lines are available for all gas
furnace models to permit the addition of a 1/2” F.P.T.
shut-off valve above the fl oor.
The gas supply to your home will either be Natural Gas or
L.P. (bottle gas). Your furnace is factory equipped to operate
on Natural Gas. If your gas supply is L.P. (bottle gas), you
must contact a qualifi ed serviceman or gas supplier to
convert the furnace. Instructions for gas conversion are
listed on page 19. Factory installed orifi ce sizes are listed
in Table 10 (page 30).
For natural gas operation, the furnace is designed for 7”
W.C. inlet pressure. Pressure is reduced to 3 1/2” W.C.
by the pressure regulator in the gas valve. The maximum
inlet pressure for the valve is 7” W.C and the minimum
inlet pressure is 4.5” W.C.
For L.P. gas, pressure to the gas valve must be more than
11” W.C. but not more than 13” W.C. Pressure is reduced
to 10” W.C. by the pressure regulator in the gas valve.
To Gas
Supply
Floor
Control
Panel
On-Off-Fan
Switch
Alt. Fuel
Line Entry
Floor Cavity
Figure 26. Typical Gas Piping
After the gas piping to the furnace is complete, all
connections must be tested for gas leaks. This includes
pipe connections at the main gas valve, emergency shutoff
valve and fl exible gas connectors (if applicable). The soap
and water solution can be applied on each joint or union
using a small paintbrush. If any bubbling is observed,
the connection is not sealed adequately and must be
retightened. Repeat the tightening and soap check process
until bubbling ceases.
IMPORTANT NOTE: When pressure testing gas supply
lines at pressures greater than 1/2 psig (14 inch W.C.),
the gas supply piping system must be disconnected
from the furnace to prevent damage to the gas control
valve. If the test pressure is less than or equal to 1/2
psig (14 inch W.C.), close the manual shut-off valve.
Oil Tank & Piping Installation
The following procedures are recommended as good
practice. However, requirements of local codes and
ordinances, H.U.D. Manufactured Home and Safety
Standards or National Fire Protection Association must
be satisfi ed, where they apply, for an approved installation.
• Use a tank capacity suitable for the application with a
weatherproof, capped fi ll opening and a shielded vent
to let in air as fuel is used.
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