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B. Framing Enclosure for LP Gas Supply
System
If you build an enclosure for an LP gas cylinder, follow
these recommended specifications and local codes:
Ventilation
Enclosures must be ventilated by openings at the level
of the cylinder valve and at floor level. Effectiveness must
be determined with the cylinder(s) in place.
One side of the enclosure must be completely
•
open or,
For an enclosure having four sides, a top and a
•
bottom:
- At least two ventilation openings at cylinder valve
level shall be provided in the side wall, equally sized,
spaced at 180 degrees (3.14 rad), and unobstructed.
Each opening must have a total free area of not less
than 1/2 square inch per pound (3.2 sq.
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 shall 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 area of
10 square inches (64.5 sq. cm). If ventilation
openings at floor level are in a side wall, there must
be a least two openings. The bottom of the openings
must be at floor level and the upper edge can't be
more than 5 in. (127 mm) above the floor. The
openings must be equally sized, spaced at 180
degrees (3.14 rad) and unobstructed.
- Every opening must have minimum dimensions to
permit the entrance of a 1/8 inch (3.2 mm)
diameter rod.
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Accessibility
Cylinder valves must be readily accessible for
•
hand operation. A door on the enclosure to
gain access to the cylinder valves is
acceptable, provided it is non-locking and
can be opened without the use of tools.
•
such that:
- The LP gas supply cylinder(s) can be
- Those connections which could be
cm/kg)
of
- Be certain to mount or set the LP gas
Minimum Clearances
There must be a minimum clearance of 2 in.
•
(50.8 mm) between the lower surface of the floor
of the LP gas supply cylinder enclosure and the
ground.
If using an LP-gas supply cylinder, it must be:
Constructed and marked in accordance with the
U.S. Department of Transportation (DOT)
Specifications for LP-Gas Cylinders, or the
standard for Cylinders, Spheres and Tubes for
Transportation of Dangerous Goods and
Commission, CAN/CSA-B339, as applicable;
provided with a listed overfilling prevention
device; and provided with a cylinder connection
device compatible with the connection for the
appliance.
The design of the enclosure must be
connected,
disconnected
connections
inspected
outside the cylinder enclosure.
disturbed when installing the cylinder(s)
in the enclosure can be leak tested
inside the enclosure.
cylinder on a flat stable surface and
retain it to prevent it from tipping.
Crystal Fire 42435 REV P 6-1-17
and
the
and
tested
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