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108795-01M
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11
11
INSTALLATION
Continued
GAS LINE HOOK-UP
WARNING: Gas line hookup should be done by your
gas supplier or a qualified service person.
WARNING: Before you proceed, make sure your
gas supply is OFF.
A manual shutoff valve has been included in the applianceʼs gas
supply system. You may consider installing an extra gas shutoff
valve outside the applianceʼs enclosure (check with local codes)
where it can be accessed more conveniently with a key through a
wall as shown in Figure 18.
In conformance with local codes, route a 1/2" NPT gas line to the
appliance through hole in left side of firebox or sub-floor as shown
in Figure 19.
CAUTION: Do not kink flexible gas line.
DESA recommends that a black iron gas line be routed from the
gas source, through a sediment trap (shown in Figure 20) and into
the appliance. Once connected through the appliance, a flexible
gas line may be used for ease of installation to gas control valve
(see Figure 21).
Before connecting the black iron gas line to the inside of the appli-
ance a sediment trap must be included outside the appliance between
the gas line and the gas shutoff valve. It must extend down three
(3) inches beyond the center of the pipe. Prepare incoming black
iron gas line with teflon tape or pipe joint compound (Check with
local building codes).
CAUTION: Compounds used on threaded joints of
gas piping shall be resistant to the action of Liquefied
Petroleum (LP or propane) and should be applied lightly
to ensure excess sealant does not enter the gas line.
WARNING: All gas piping and connections must be
tested for leaks after the installation is completed.
After ensuring that the gas valve is on, apply a com-
mercial leak detection solution to all connections and
joints. If bubbles appear, leaks can be detected and
corrected.
Do not use an open flame for leak testing and do not
operate any appliance if a leak is detected.
Complete your gas installation by connecting incoming gas line
with flexible gas line. Secure tightly with wrench but DO NOT
OVERTIGHTEN
.
Figure 18 - Manual Shutoff Valve Installation
Figure 19 - Routing Incoming Gas Line
Typical Exterior Wall Gas
Shutoff Installation
Key
Extension
Shutoff
Valve
A
1/2" NPT Incoming
Black Iron Gas Line
7"
7"
Alternate Gas Supply
Through Sub-Floor
M36(B,H), M36P(B,H M42(B,H), M42P(B,H)
VM36(B,H), VM36P(B,H) VM42(B,H), VM42P(B,H)
A 8
5
/
8
" (219 mm) 10
1
/
2
" (267 mm)
P
I
L
O
T
ON
OFF
IN OUT
Figure 21 - Connecting Flexible Gas Line to Millivolt Valve
3" Min.
(76mm)
Side W
all
Of Appliance
Incoming
1/2" Gas Line
Permitted by
Local Codes
Sediment Trap
(Not Supplied)
Figure 20 - Sediment Trap
Gas Shutoff
Valve
Flexible Gas Line
Do NOT Kink
1/2" NPT
Incoming
Gas Line
Note:
1) Wire Connections
Not Shown for Clarity
2) * 1/8" NPT Plugged
Tapping
Red Surface Indicates For
Propane/LP Use Only
Pilot Adj
Inlet Pressure Tap
Outlet
Pressure Tap