Desa VO36NR Mode D'emploi page 9

INSTALLATION
Continued
For propane/LP units, the installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11" and 14" of water. If you do not
reduce incoming gas pressure, control valve
damage could occur. Install external regu-
lator with the vent pointing down as shown in
Figure 11. Pointing the vent down protects it
from freezing rain or sleet.
Propane/LP
Supply Tank
Vent
Pointing
Down
Figure 11 - External Regulator with Vent
Pointing Down
REMOTE PROPANE/LP GAS
SUPPLIES AND ENCLOSURES
If appliance is to be permanently connected
to a gas piping system from a remote supply
tank, installation must be in accordance with
local codes or, in absence of local codes,
with the National Fuel Gas Codes ANSI
Z223.1/NFPA 54.
Enclosures may be used to conceal propane/
LP supply tanks and must be constructed to
meet the following minimum construction
requirements:
• An enclosure must have either one open
side or at least four opposing vent open-
ings, top and bottom, which meet minimum
requirements for size and location (see
Figure 12).
• Each opening must provide a minimum or
1/2 square inches (3,23 cm
for each pound propane/LP contained in
enclosed supply tank.
Example: A full enclosure for a 20 pound
propane/LP tank must have at least four,
10 square inches (65 cm
x 5" (5 x 13 cm) square].
• The top openings must be 180° opposing
and be placed at valve level.
119109-01G
External
Regulator
) of open area
2
) openings [a 2"
2
www.desatech.com
• The bottom openings must be 180° op-
posing and be placed 5" (12.7 cm) above
bottom floor.
• There must be 2" (5 cm) minimum clear-
ance from the floor to ground level of
enclosure.
CAUTION: Use only new, black
iron or steel pipe. Internally-tinned
copper tubing may be used in
certain areas. Check your local
codes. Use pipe of 1/2" diameter
or greater to allow proper gas vol-
ume to heater. If pipe is too small,
undue loss of volume will occur.
Installation must include an equipment shutoff
valve, union and plugged 1/8" NPT tap. Locate
NPT tap within reach for test gauge hook up.
NPT tap must be upstream from log set (see
Figure 13, page 10).
IMPORTANT: Install equipment shutoff valve
in an accessible location. The equipment
shutoff valve is for turning on or shutting off
the gas to the appliance.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
Top
Openings
At Valve
Level
2 Openings
Top and
Bottom on
Each Side
Minimum
0.5 inch 2
(3.23 cm )
2
of Free Air
Space For
Each Pound
of Fuel But No
Less Than
10 inches
2
(65 cm ) Total
2
Figure 12 - Propane/LP Tank Enclosure
Minimum of 5" (12.7 cm)
From Floor To Top Of
Bottom Opening
Minimum of
2" (5 cm)
From Floor
Bottom To
Minimum 1/8"
Ground Level
(0.3 cm)
Permissible
Openings
9