3
GAS CYLINDERS
1. This appliance shall be used with NATURAL and LP inlet gas supply only. The LP or CNG gas supply cylinder must be
constructed and marked in accordance with the specifications for LP-gas cylinders or CNG-gas cylinders of the U.S.
Department of Transportation (DOT).
2. The use or storage of the LP or CNG cylinder may not be used in a building, garage or any other enclosed area.
3. Cylinders must be stored outdoors in a well-ventilated area out of the reach of children. Disconnected cylinders must
have threaded valve plugs tightly installed.
4. If the appliance is not in use, the gas must be turned off at the supply cylider.
5. Inspect the hose before each use of the appliance. The hose assembly must be replaced prior to the appliance being put
into operation if there is evidence of excessive abrasion or wear, or if hose is damaged. The hose assembly must be
replaced with a replacement hose assembly equivalent to, or greater than, rating specified on the original hose.
6. The gas hose shall be located out of pathways where people may trip over it or in areas where the hose may be subject to
accidental damage.
7. Never use matches or open flame to test for leaks. Use soapy water or a leak detector.
8. Do not store or use a LP-gas supply cylinder around excessive heat; the cylinder may get too hot or cause the pressure to
rise. Store the cylinder in a secure upright position.
9. Cylinders must be fully opened and the pressure controlled by a reducing pressure regulator to operate properly.
ENCLOSURES FOR LP/CNG GAS SUPPLY SYSTEMS
1. Enclosures for LP-gas supply cylinders and CNG-gas supply cylinders must be ventilated by openings at the level of the
cylinder valve and at floor level. This may be accomplished by one of the following:
a. One side of the enclosure must be open.
See Figure 1
b. For an enclosure having four sides, a top and bottom, at least two ventilation openings at cylinder valve level must be
provided in the side wall, equally sized, spaced at 180 degrees and unobstructed. Each opening must have a total free
area of not less than 1/2 square in per pound (3.2sq. cm/kg) of stored fuel capacity and not less than a total free area of 10
square inches (64.5 sq. cm).
Ventilation opening(s) must be provided at floor level
and have a total free area of not
less than 1/2 square inch per pound (3.2 sq. cm/kg) of stored fuel capacity and not less than a total free are of 10 square
inches (64.5 sq. cm). If ventilation openings at floor level are in a side wall, there must be at least two openings. The
bottom of the openings must be at floor level. The openings shall be equally sized, spaced at 180 degrees and
unobstructed.
See Figure 2
*There must be a minimum clearance of 2 inches (50.8 mm) between the lower surface of the floor of the cylinder enclosure
and the ground.
*The cylinder enclosure must be such that the cylinder can be connected, disconnected and the connections inspected and
tested outside the cylinder enclosure. Cylinder valves must be readily accessible for hand operation. A door on the
enclosure to gain access to the cylinder valve is acceptable, provided it is non-locking and can be opened without the use
of tools.
Figure 1
Figure 2
