Desa VC42N SERIES Owner's Operation And Installation Manual page 19

FIREPLACE INSTALLATION
Continued
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 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 requirements 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.
We recommend that you install a sediment trap/drip leg in supply
line as shown in Figure 31. Locate 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 sediment trap traps moisture and
contaminants. This keeps them from going into fireplace gas con-
trols. If sediment trap/drip leg is not installed or is installed wrong,
fireplace may not run properly.
Approved Flexible
Gas Line
3" Minimum
Figure 31 - Gas Connection
116236-01A
CSA Design-Certified
Equipment Shutoff Valve
with 1/8" NPT Tap*
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)
Cap Pipe Nipple Tee Joint
Sediment Trap/Drip Leg
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FIREPLACE INSTALLATION
Installing Gas Piping to Fireplace Location (Cont.)
Connecting Fireplace to Gas Supply
Checking Gas Connections
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