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Tent Camper Owner’s Manual
TwO sTage Lp gas reguLaTOr
e regulator reduces the pressure of the LP gas vapor from the pressure in the tank, to
the pressure required for use at the appliances. e regulator seldom requires service.
Always protect it from the elements and extreme temperatures.
e regulator has been preset by the manufacturer and adjustment should not be neces-
sary. However, if adjustment is required, do not attempt to adjust it yourself. Adjustment
must be made with special equipment and by a qualied LP gas service technician. Have
the regulator checked annually, or sooner, if you suspect a problem. e correct line pres-
sure should be 6 to 8 oz., or 10 to 14 inches of water column.
A two-stage regulator performs the pressure reducing function as previously described. is is accomplished in
two stages. Two regulators are used in the same body to reduce the pressure of the LP gas in the tanks for use by the
appliances in the camper.
e high pressure regulator, (rst stage), is used to reduce the pressure to approximately 10 to 13 PSI (ounces per
square inch), before sending it along to the low pressure regulator, (second stage). e second stage regulator re-
duces the pressure further to 11 inches water column, or 6.35 PSI.
e two stage regulator does not have to work as hard since the second stage receives consistent pressure rather than
inlet pressure, which varies. e result is a safer and more ecient system and helps to eliminate problems such as
freeze up and pilot outages.
NEVER ALTER THE POSITION OF THE REGULATOR. LP GAS REGULA
TORS MUST ALWAYS BE INSTALLED WITH THE DIAPHRAGM VENT
FACING DOWNWARD. KEEP THE REGULATOR COVER IN PLACE, TO
MINIMIZE VENT BLOCKAGE, WHICH COULD RESULT IN EXCESSIVE
GAS PRESSURE, CAUSING A FIRE OR EXPLOSION.
Because air is required for proper operation of the regulator, it is very important that the regulator vent be kept free
of dirt and debris. For this reason, it is necessary to keep the vent facing downward and the regulator covered, to
protect it from contamination. A toothbrush can be used to clean the vent if it becomes clogged by foreign matter.
During cold weather, it’s important to keep ice from forming in the regulator. Ice can prevent the ow of LP gas
to your appliances. Have your LP supplier add anhydrous methanol when lling your tank for use during cold
weather. Regulator freeze up can occur in any weather if there is moisture in the tank, or if the tank has been over-
lled. Always use moisture-free LP gas. If moisture has entered the tank, have the tank purged, or have anhydrous
methanol added by an authorized LP supplier.
reguLaTOr freeze-up
e term ‘regulator freeze-up’ is a misleading one. Regulators and LP gas do not freeze. However, the moisture that
can be contained in the gas, can freeze as the gas expands and cools, and it passes through the regulator.
is moisture, in the form of ice, can build up and partially or totally block the passage of the gas through the
regulator. Freezing can also occur when outside temperatures are low enough to contribute to the freezing of the
moisture in the gas.
e source of the moisture is varied. It can occur at the renery or gas plant, in the cars used to transport the gas,
or even within your own LP tanks. Moisture in an LP tank can also occur when a tank service valve is le open,
allowing moist air to enter and become trapped.
A two-stage regulator helps to reduce the possibility of freeze-up due to its larger orice size, and the fact that heat
is transferred through the walls of two regulators instead of just one.
ere are several steps which can be taken to inhibit or prevent ice from forming inside the LP tank:
•BesurethatyourLPtankisfreeofmoisturebeforerelling.
•DONOToverlltheLPtank.
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