Blue Bird Coachworks 450 LXi, Owner'S Manual

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450 LXi Owner Manual 4-12 LPG System
Rev. “C”
~ 4-12-1 ~
4-12 LPG System
This vehicle is equipped with a permanently mounted, 30 gallon (102 pounds of fuel-net) LP gas tank, which is the energy
source for the cooktop (range) and an alternative source for the refrigerator.
4-12.1 LPG Tank and Controls
The LPG supply tank is located in an unlocked compartment behind the rear axle on the passenger side of the motor home. LPG
system controls include a main gas service valve, solenoid shut-off valve, two stage pressure regulator, fi ller connection with
Auto Stop (80%) fi ll valve, 20% vapor (stop fi lling when liquid appears) valve, and the pressure relief valve.
LPG tank level can be monitored at the tank monitor panel located in the pantry.
4-12.1.1 Fuel Requirements
Liquefi ed petroleum gas is a material composed of various hydrocarbons such as propane, butane, or a mixture thereof. In
its gaseous form (vaporized), it is colorless and has a garlic-scented additive to ensure detection. In addition to being highly
fl ammable, it is also dangerous to inhale. For ease of transportation and storage, LPG is compressed into a liquid state and
stored in this form within the LPG tank. As fuel is used, vapor passes from the top of the tank into the two-stage pressure
regulator and to the various gas appliances.
Appliances do not function if the LP gas does not vaporize. Butane does not vaporize below 32 degrees Fahrenheit (the freezing
point of water), but propane continues to vaporize down to 44 degrees below zero. Propane has become the main type of LP gas
used in RVs in recent years. Your LP supplier has the correct type or blend for your locale. If your travels take you into an area
where climate differs, ask your LP dealer for his recommendations. The names of LP suppliers can be found in the yellow pages
of the telephone directory under “Gas-Liquefi ed Petroleum-Bottled & Bulk.” Many campgrounds now have LP gas fi ll facilities, as
do some service stations.
Prevent condensation and possible regulator or line freeze-ups when fi lling the tank by requesting the dealer to add a small
amount of methyl alcohol to the fi ll up. A common mixture is one ounce of methyl alcohol to each 20 pounds of LPG.
4-12.2 Filling the LP Gas Tank
When the tank is being fi lled, the service valve must be closed and the 80% liquid level valve (20% vapor valve) must be open.
The 80% auto stop fi ll valve may close before liquid appears at the 80% liquid level valve, but if liquid does appear, stop fi lling
immediately; the tank is fi lled to its LP capacity. Close the liquid level valve. Do not use a wrench to tighten this valve or the
service valve; they are designed to be closed leak-tight by hand. If you cannot hand-tighten properly, the valve probably needs
repair or replacement.
WARNING!!
When the motor home is to be stored in a confi ned area, turn off the LPG at the main tank shutoff
valve. With the LPG leak detector, this may now be accomplished by turning off the LPG Master
Switch on the galley panel.
NOTE: Liquefi ed petroleum gas is heavier than air.
CAUTION!!
Be sure that the main LPG supply is shut off during refueling to prevent accidental ignition of gas
fumes by appliance igniters.
CAUTION!!
All gas appliances must be cut off before fi lling the LPG tank. Check gas lines and fi ttings periodically
for tightness and leakage.