Desa TC36N Series Owner's Operation And Installation Manual page 22

FIREPLACE
INSTALLATION
Continued
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-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 volume to fireplace.
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 fireplace (see
Figure 31).
IMPORTANT: Install main gas valve (equipment
shutoff valve) in an accessible location. The main
gas valve is for turning on or shutting off the gas
to the appliance.
Check your building codes for any special re-
quirements for locating equipment shutoff valve
to fireplaces.
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 fireplace valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
Propane/LP
Supply Tank
Figure 30 - External Regulator with Vent
Pointing Down (Propane/LP Only)
22
We recommend that you install a sediment trap/
drip leg in supply line as shown in Figure 31. 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.
CSA Design-Certified
Equipment Shutoff Valve
with 1/8" NPT Tap*
Approved
Flexible
Gas Line
* 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
External
• sealant (resistant to propane/LP gas, not
Regulator
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
Vent the access holes on side of fireplace.
Pointing
3. Attach flexible gas line from gas supply to
Down
control valve (see Figure 32, page 23).
4. Check all gas connections for leaks. See
Checking Gas Connections, page 23.
www.desatech.com
3" Minimum
Cap Pipe Tee Joint
Nipple
Sediment Trap/
Drip Leg
Figure 31 - Gas Connection
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)
116192-01E