Audiovox ACC-40 Operations Instructions Page 61

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5-5
SECTION 5
LP GAS SYSTEM
LP GAS ALARM - See page 1-2.
WINTER USE OF LP GAS
Due to vaporization characteristics of LP gas,
it is important that the winter camper knows how
to most efficiently use the LP system. The vapor-
ization rate of LP gas decreases in a direct rela-
tionship to a decrease in temperature. Propane
will convert to a usable gas at temperatures down
to -44°F. For this reason, propane is a popular
heating fuel in cold climates.
The greater the amount of liquid gas in the
tank (up to 80% level) the greater the amount of
LP gas vapor generated. The following is an ex-
ample of the number of BTU’s available from an
84-pound tank at 0° F at three levels. As you can
see, the number of BTU’s decreases as the tank is
emptied. Nearly twice as many BTU’s are avail-
able from a full tank than one that is one-fourth
full.
BTU’s Available at 0° F.
Tank Level BTU’s
80% 64,000
50% 50,400
20% 33,000
The following LP Gas Vaporization and Tem-
perature Relationship chart typifies the LP gas
loss with a decrease in temperature. The percent-
age figures are the increase or decrease of vapor
that would be available at 0°F. These figures ap-
ply to any size LP gas tanks.
Percentage of BTU’s
Temperature Available at 0° F.
20° F. 200%
10° F. 150%
0° F. 100%
-5° F. 75%
-10° F. 50%
-15° F. 25%
-20° F. 12 1/2%
-44° F. Propane will
not vaporize
IF YOU SMELL GAS
1. Extinguish any open flames, pilot lights and all
smoking materials.
2. Do not touch electrical switches.
3. Shut off the gas supply at the tank valve(s) or gas
supply connection.
4. Open doors and other ventilating openings.
5. Leave the area until odor clears.
6. Have the gas system checked and leakage source
corrected before using again.
WARNING
Never use an open flame to test for
gas leaks. When testing for gas lines
leaks with a soapy water solution, DO
NOT use a detergent containing
ammonia or chlorine. These sub-
stances may generate a chemical
reaction causing corrosion to gas
lines, resulting in dangerous leak con-
ditions.
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