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'I,
USING LP GAS SYSTEM
AT LOW TEMPERATURES
Your LP gas system will function at low temperatures.
provided the system components are kept at a tempera-
ture above the vapor point of the LP gas. Ask your LP
gas supplier or your motor home dealer for information
on product blends available in your area and the areas
in which you will be traveling.
The following chart shows the reduction in available
BTU's/hour under various fill levels as the temperature
drops:
The chart clearly shows how the availability of the gas is
20 lb. Bottle'
% FULL+ 20°
0°
_5°
-10°
-15°
60%
36.000 18.000 12.750 8.500 4.250
50%
32,400 18.200 12.150 8.100 4.050
40%
28.800 14,400 11,400 7.600 3.800
30%
25.200 12.600 10,450 7.300 3.150
20%
21.600 10.800
8.100 5,400 2.700
10%
16.200
8.100
6.075 4.050 2.025
'30 lb. Bottle multiply x 1.40
reduced alJower temperatures. With this in mind/keep
... your LP tank as full as possible dUring cold weather.
Check the. BTU/hr rating plates on your LP gas appli-
ances: This information will help YOu maljage your LP
gas requirements efficiently.
; LPgas systems can and do freeze up in very cold
,weather. ltis a common misconception that the regula-
. toror
the gas itself freezes. Actually •. it is moisture or
. water vapor that gets trapped in the system or absorbed
by the gas that freezes and causes the problem. This ice
can build up and partially or totally block the gas supply.
There are a number of things you can do to prevent
freeze up:
1. Be sure the gas tank is totally moisture-free
before it Is filled. If you are not sure. have an
LP service station inject an approved anti-
freeze or deicer into the tank.
2. Be sure the tank is not overfilled. This is also
a safety consideration.
. 3. Have the gas tank purged by the LP gas
service station if freeze up occurs.
4. Be sure you have the proper gas blend foryour
traveling area. If you have the proper gas
blend. it is very unlikely that the gas is at fault.
29
If, despite precaution. you do experience freeze uP. ask
your LP gas supplier to service the tank or regulator as
required.
.
FILLING LP GAS TANKS
To fill the chassis-mounted storage tank. drive the
vehicle to an LP gas supplier or
a
service station which
sells LP gas. Do not attempt to fill the tank yourself.
WARNING
TURN OFF LPGAS MAIN VALVE BEFORE
FILLING LP GAS TANK ()R ENTERING AN
LP GAS BULK PLANT OR MOTOR FUEL
SERVICE STATION. TURN OFF ALL PILOT
LIGHTS AND APPLIANCES INDIVIDUALLY
BEFORE REFUELING OF MOTOR FUEL
TANKS ANDIOR LP GAS CONTAINERS.
WHEN NOT IIII[)IVIDUALLY TURNED OFF,
AUTOMATIC IGlllltiONAPPLIAIliCES MAY
CONTINUE
TOSPA~K
W!-Ji:N,J-P GAS IS
TURNED OFF AT THE CONJAINE.R.
... WARNING·
DO NOT FILL LP GAS'CONTAINERS TO
MORETHAN 80% CAPACITY. OVERFilLING
CAN RESULT IN UNCONTROllED GAS
FLOW WHICH CAN CAUSE FIRE AND EX-
PLOSION .. 'A,' PROPERLY"FILLED CON-
TAINER HOLDS ABOUT80%'OF ITS VOL-
UME AS LIQUID.
LP GAS SYSTEM LEAK CHECKS .
The smell oiLP
gas(~ctually. an~ddltiVe.
ethyl mercap-
tan) indicates a lI:iak. Ol:niious leak.sources are fittings •
valves arid couplings .• '
. .
.
Foryour safety. check for leaks in your gas system each
time the tank is filled and before each trip. Always check
the system any timeyou detect a garlic-like odor. Listen
for a sustained hiss or hum when you turn the gas on.
This may indicate a leak.
The first time you have your LP tank filled. have the
serviceman bleed a little LP gas out of the small outage
valve (this also lets you check that the bottle is not
overfilled) and note the odor for future reference.Asmall
• number of people cannot smell this odor; if you are one
of these you must take extra care in checking for leaks.
as well as whenever you use LP gas appliances .
To perform a leak check. swab a mixture of a non-
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