Ice In The Regulator; Other Factors To Consider In Cold Weather; Collapsible Hoses And Propane Gas System Connections - Helio O Series Owner's Manual

adjustments be needed, do not try to do it yourself. Adjustments
must be made using special equipment by a repair and
maintenance technician certified in propane gas. Have the
regulator checked annually, or earlier if you suspect a problem.
The appropriate main line pressure must be 6 to 8 oz, or 10 to
14 inches of water column.
Since air is necessary for the regulator to work, it is important that
the regulator vent be free of dirt and scraps. For this reason, the
vent must be kept facing downwards and the regulator covered to
protect it from contamination. A toothbrush may be used to clean
the vent if it becomes obstructed by foreign objects.
In cold weather, it is important to prevent ice from forming inside
the regulator. Ice can slow the flow rate of propane gas toward
your appliances. Ask your propane gas supplier to add anhydrous
methanol when filling up your tank if used during cold weather.
Ice can occur in the regulator no matter the temperature
if there is humidity in the tank or the tank is too full. Always use
humidity-free propane gas. If humidity penetrates the tank,
empty it or have an authorized propane supplier add anhydrous
methanol.

Ice in the regulator

The humidity that may be contained in propane gas can freeze
when the gas is expanding or going through the regulator. This
frozen humidity can accumulate until it partially or entirely blocks
the propane gas from entering the regulator. Ice can also occur
when the outside temperature is low enough to contribute to the
freezing of the humidity contained in the propane gas.
The source of humidity may vary. It can come from propane gas
refineries or manufacturing plants, the vehicles used for propane
gas transportation, or even your own tank. Humidity can appear
in a propane gas tank when a tank service valve is left open, which
allows for humid air to enter and stay trapped.
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Several steps can be taken to stop or prevent ice from forming
inside the propane gas tank:
• Make sure the propane gas tank is free of humidity before filling
it up.
• DO NOT fill the propane gas tank past the recommended mark.
• Keep the service valves of an empty tank closed.
• In case of ice, have the propane gas tank emptied by your
propane gas dealer before filling it up.
• Add anhydrous methanol, another approved propane antifreeze,
or an anti-icing additive to the propane gas tank.
• Keep the regulator covered at all times.
NEVER attempt to melt the ice using an open flame. A small
lightbulb may sometimes be used to give off heat and accelerate
the melting process. Once the ice has melted, take the necessary
steps to prevent the ice from forming again. Have the system
checked by your propane gas supplier in order to determine
the source of humidity and correct the problem.

Other factors to consider in cold weather

Since cold propane gas in the tank needs heat from the surrounding
air to evaporate, remember that when the outside temperature
drops, the propane gas's BTU value is reduced. A reduced BTU
value can have a significant impact on the system's performance.
To ensure your propane gas tanks are performing adequately, keep
them as full as possible during cold weather and review the BTU/h
numbers on your propane gas appliances.

Collapsible hoses and propane gas system connections

The collapsible hoses included with your trailer are designed
to resist pressures exceeding those of the propane gas system.
However, sunlight and the ozone contribute to the deterioration