Desa CD36TN-M - Manual (Page 24)

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FIREPLACE
INSTALLATION
Continued
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
We recommend that you install a sediment trap/
drip leg in supply line as shown in Figure 38. Lo-
cate sediment trap/drip leg where it is within reach
for cleaning. Install in piping system between fuel
supply and fireplace. Locate sediment trap/drip leg
where trapped matter is not likely to freeze. A sedi-
ment trap traps moisture and contaminants. This
keeps them from going into fireplace gas controls.
If sediment trap/drip leg is not installed or is in-
stalled wrong, fireplace may not run properly.
Figure 38 - Gas Connection
CSA Design-Certified
Equipment Shutoff Valve
with 1/8" NPT Tap*
3" Minimum
Approved
Flexible
Gas Line
Cap Pipe Tee Joint
Nipple
Sediment Trap/Drip Leg
Natural - From
Gas Meter (5.5"
W.C. to 10.5" W.C.
Pressure)
Propane/LP From
External Regulator
(11" W.C. to 14"
W.C. Pressure)
* The CSA design-certified equipment shutoff
valve may be supplied with the appliance or you
can purchase it from your retailer.
CONNECTING FIREPLACE TO GAS
SUPPLY
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• sealant (resistant to propane/LP gas, not
provided)
1. Open lower louver door panel by gently pull-
ing forward.
2. Route flexible gas line (provided by installer)
from equipment shutoff valve to fireplace.
Route flexible gas supply line through one of
the access holes on side of fireplace.
Figure 39 - Connecting Flexible Gas Line
to Millivolt Valve
Flexible Gas Line
Do NOT Kink
Equipment
Shutoff Valve
To Gas Supply
(Natural)
To External
Regulator
(Propane/LP)
Control Valve
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an open
flame to check for a leak. Apply
noncorrosive leak detection fluid
to all joints. Bubbles forming show
a leak. Correct all leaks at once.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect fireplace and its individual equip-
ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig (3.5 kPa)
will damage fireplace gas regulator.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas fireplace or opening main gas
valve located on or near gas meter for natural
gas fireplace or using compressed air.
3. Attach flexible gas line from gas supply to
control valve (see Figure 39).
4. Check all gas connections for leaks. See
Checking Gas Connections.