Enclosures for LP (Propane) Gas Supply Systems
If you build an enclosure for an LP gas cylinder you must
follow these specifications. You must also follow local
codes.
An enclosure for an LP-gas cylinder shall be ventilated
by openings at both the upper and lower levels of the
enclosure. This shall be accompanied by one of the
following:
a. One side of the enclosure shall be completely open; or
b. For an enclosure having four sides, a top, and a
bottom:
1. At least two ventilation openings shall be provided in
the sidewalls of the enclosure, located within 5 in (217
mm) of the top of the enclosure, equally sized, spaced
at a minimum of 90 degrees (1.57 rad), and
unobstructed. The opening(s) shall have a total free
area of not less than 1square inch per pound (14.2
cm2Ckg) of stored fuel capacity.
2. Ventilation opening(s) shall be provided at floor level
of the enclosure and shall have a total free area of not
less than 1/2 square inches per pound (7.1 cm2Ckg)
of stored fuel capacity. If ventilation openings at floor
level are in a sidewall, there shall be at least two
openings. The bottom of the openings shall be 1 in
(25.4 mm) or less from the floor level and the upper
edge no more than 5 in (127 mm) above the floor
level. The openings shall be equally sized, spaced at a
minimum of 90 degrees (1.57 rad), and unobstructed.
3. Every opening shall have minimum dimensions so as
to permit the entrance of a 1/8 in (3.2 mm) diameter
rod.
4. Ventilation openings in sidewalls shall not
communicate directly with other enclosures of the
appliance.
The cylinder valve shall 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. Designs
using a cover to gain access to the cylinder and cylinder
valve shall be provided with handles or equivalent at a
minimum of 180 degrees apart to facilitate lifting of the
cover.
The enclosure for the LP-gas cylinder shall isolate the
cylinder from the burner compartment to provide:
a. Shielding from radiation;
b. A flame barrier; and
c. Protection from foreign material.
There shall be a minimum clearance of 2 in (50.8 mm)
between the floor of the non-disposable LP-gas cylinder
enclosure and the ground.
The design of the fireplace shall be such that:
a. A non-disposable LP-gas cylinder can be connected,
disconnected, and the connections inspected and
tested outside the cylinder enclosure; and
b. Those connections which could be disturbed when
installing the cylinder 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.
Purge the gas supply line of any trapped air prior to
the first firing of the unit.
WARNING:
During the initial purging and subsequent
lightings, NEVER allow gas valve to remain in
"OPEN" position without first placing a burning
match on the top of the burner.
Test fire the unit after referring to the SAFETY
INFORMATION and LIGHTING INSTRUCTIONS.
If LP-Gas outdoor fire pits are used continuously
after a couple of hours, you could see the possibility of
the flame decreasing in size. If this happens, turn off
the control valve and the tank valve and wait a couple
of hours before lighting again or switch propane tanks.
The propane tank is freezing up due to the volume of
gas being taken out of the tank.
Combustible
Combustible
FP2085T
HOSE ROUTING:
Hose must
be reasonably straight and
free of kinks. Hose must not
be near sharp edges or run
back into non-combustible
area of the burner.
WARNING
TIPPING HAZARD
Tank must be
secured
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