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WARNING: Never smoke while filling the LP tanks.
When an LP tank is low, occasionally there is a concentration of garlic-like odor which may be
mistaken for a gas leak. After a change over to a full tank, the odor usually will disappear. If not, turn
off the valve of the LP gas tank and have the system checked by a qualified technician.
Fuel Distribution Components
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CAUTION: Remember - POL adapters and fittings have left hand threads.
POL ADAPTER AND LOW PRESSURE
Propane leaves the LP gas tank through a POL adapter (Fig. 4-27E) with an excess flow valve built
into adaptor, which is attached to the regulator. No sealant is required on a brass to brass connection.
The excess flow valve provides a large volume of propane to escape from the bottle should there be a
breakage between the LP gas tank and regulator.
REGULATOR
The regulator (Fig. 4-27F) is the heart of your LP gas system and has internal moving parts. Its
function is to reduce high and varied pressure from the LP gas tank to a safe and consistent low
pressure. The inlet valve is the first stage, reducing LP gas tank pressure to ten to thirteen pounds.
The second stage will reduce the gas from ten pounds to an operating pressure of 11" W.C. (water
column) or 6.35 oz. of outlet pressure to the motorhome system. The second stage is adjustable and
will need to be adjusted for precise operation. DO NOT attempt to adjust regulator. Have an
authorized and competent technician make any adjustments. We suggest this normal maintenance
procedure be performed once per year.
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WARNING: LP gas regulators must always be installed with the diaphragm vent
facing downward. Regulators that are not in a compartment have been equipped with
a protective cover. Ensure that the regulator vent faces downward and that the cover
is in place. This will minimize vent blockage that could result in excessive gas pressure
causing a fire or an explosion.
If traveling on wet roads and in freezing weather conditions, ensure that the LP gas regulator is
protected from road spray. If water enters the vent in the regulator, it may freeze the pressure
controlling diaphragm in the open position so that the LP gas tank pressure is applied to the
appliances - a hazardous condition. Follow the instruction given by the manufacturer of the
regulator. The vent on the regulator is to be turned downward between the 5 and 7 o'clock position.
MAIN SUPPLY HOSE
The main supply hose will be attached from the regulator to the brass manifold fitting in the frame of
the motorhome. The swivel brass nut on the main hose is the final attachment.
48 Type C Owner’s Manual
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