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20
Enclosures For LP (Propane) Gas Supply Systems
If you build an enclosure for an LP gas cylinder, follow these recommended specifications. You must also
follow local codes.
EN
•
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 accomplished by one of the following:
One side of the enclosure shall be completely open;
OR
For an enclosure having four sides, a top, and a bottom:
a) At least two ventilation openings shall be provided in the sidewalls of the enclosure, located within
5 in (127 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 1 in
2
cm
/ kg) of stored fuel capacity.
b) 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 in
a side wall, 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.
c) Every opening shall have minimum dimensions so as to permit the entrance of a 1/8 inch (3.2mm) diameter
rod.
Ventilation openings in sidewalls shall not communicate directly with other enclosures of the appliance.
Cylinder valves shall 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.
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.
There shall be a minimum clearance of 2 inches (50.8mm) between the lower surface of the floor of the LP
gas supply cylinder enclosure and the ground.
The design of the enclosure shall be such that (1) the LP gas supply cylinder(s) can be connected,
disconnected and the connections inspected and tested outside the cylinder enclosure; and (2) those
connections which could be disturbed when installing the cylinder(s) in the enclosure can be leak tested
inside the enclosure.
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.
Be certain to mount or set the LP gas cylinder on a flat surface and restrain it using a cylinder retaining
bracket to prevent it from tipping.
Propane Enclosure
OPENING
A
5" (127mm)
MAXIMUM
OPENING
B
1" (25.4mm)
MAXIMUM
CYLINDER SIZE
20 lb (9.1kg)
30 lb (13.6kg)
www.napoleongrills.com
2
2
per lb (7.1 cm
/ kg) of stored fuel capacity. If ventilation openings at floor level are in
34" (864mm)
RECOMMENDED
2" (51mm)
MINIMUM
5" (127mm)
FROM APPLIANCE
MAXIMUM
OPENING A AREA
OPENING B AREA
2
2
20in
(130cm
)
10in
2
2
30in
(195cm
)
15in
PARTITION TO ISOLATE CYLINDER
2
2
(65cm
)
2
2
(100cm
)
2
per lb (14.2
NON LOCKING DOOR
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