Systems & Components; Propane Gas (O2 & O3 Series); Propane Gas Tank; Filling Up Your Propane Gas Tank - Helio O Series Owner's Manual

4. SYSTEMS & COMPONENTS
Propane gas (O2 & O3 Series)
Your trailer's propane gas system supplies the fuel necessary for
cooking, optional heating, and water heating. Propane gas can
also be used as another energy source for your refrigerator.
When manipulation and safety precautions are observed, propane
gas can be a clean, efficient, and safe form of energy. It allows you
to benefit from a comfortable lifestyle at a time when other forms
of energy cannot be used.
The propane gas is stocked in liquid form in a special storage tank.
This tank is fixed on the chassis at the front of the trailer, next
to the hitch and coupler, and is protected by a fiberglass case,
which also contains the deep-cycle battery.
The propane gas is stored under extreme pressure in the tank,
with enough space to allow for expansion under vapor form.
The pressure of this vapor is reduced when it goes through a
regulator. This reduction of pressure is a two-step process that
ensures constant pressure in the propane gas used, no matter
the outside temperature, climate, or altitude.

Propane gas tank

Propane gas tanks are tested to sustain pressure levels exceeding
those usually met during expected normal use. Furthermore, all
propane gas tanks are equipped with an integrated safety device
that regulates the extent to which they should be filled. Propane
cylinders are designed to be filled with propane gas at only 80%
of their capacity. With the cylinder filled to only 80% of its capacity,
this leaves 20% of space left for vapor. This extra space allows
the vapor to recede via the Acme QCC1 connection while also
providing space for the liquid to expand. If the tank were
completely full, an increase in the outside temperature could
cause a propane gas discharge via the expansion valve.

Filling up your propane gas tank

Before removing a propane cylinder to fill it up or perform
work on the propane gas system, blow out all open flames and
discontinue the use of any fumigant.
1. Disconnect all devices running on propane gas and turn off all
pilots (water heater, refrigerator, heating (optional).
2. Shut off the service valve on the propane gas tank and remove
the Acme QCC1 connection, which is threaded left hand and
must be twisted clockwise to be removed. Never use a wrench
to shut off the service valve. If a leak occurs while shutting it off
manually, have the service valve repaired or replaced.
3. Install a cap or block the entrance of the service valve to prevent
any penetration of dust or dirt.
4. Untighten the bolt on the clamp ring, then remove the tank from
the trailer. Always transport the propane cylinder in a vertical
position. Never transport, install, or use a vertical tank in a
horizontal or upside down position.
5. Bring the tank to a qualified propane gas supplier who observes
the regulations in effect.
6. Ask the supplier to plug the nozzle to your tank's filling up
connection.
7. Although the tank is equipped with an automatic stop valve
at 80%, which prevents the filling up of the tank past 80% of its
capacity, let the supplier check the 20% liquid tank level gauge
and stop the filling up process if liquid appears.

Propane gas regulator

The regulator reduces the pressure of the propane vapor inside the
tank to that required for household appliance use. The regulator
rarely requires maintenance. Always protect it from the elements
and extreme temperatures.
The regulator has been preregulated by the manufacturer,
and adjustments should not be necessary. However, should
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