C. 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. 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 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.
Accessibility
Cylinder valves must be readily accessible for hand op-
eration. 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.
The design of the enclosure must be such that:
- The LP gas supply cylinder(s) can be connected,
disconnected and the connections inspected and
tested outside the cylinder enclosure.
- Those connections which could be disturbed when
installing the cylinder(s) in the enclosure can be
leak tested inside the enclosure.
- Be certain to mount or set the LP gas cylinder on
a flat stable surface and retain it to prevent it from
tipping.
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.
The Outdoor Greatroom Company • Crystal Fire
Rev. F 9-14-2011
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