Monessen Hearth Direct Vent Gas Fireplace CDVR36 - Manual (Page 28)

28 69D0023
3"
Minim
um
FIREPLACE INSTALLATION
A listed manual shutoff valve must be installed upstream of the appliance. Union
tee and plugged
1 /
8
" NPT pressure tapping point should be installed upstream of
the appliance. See Figure 36.
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 fireplace.
Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.
Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in
pipe could result in clogged burner system valves.
We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 36. Locate sediment trap/drip
leg where it is within reach for cleaning. Install in piping system between fuel supply and burner system. Locate sediment
trap/drip leg where trapped matter is not likely to freeze. A sediment trap collects moisture and contaminants and keeps
them from going into the burner system gas controls. If sediment trap/drip leg is not installed or is installed wrong, burner
system may not run properly.
Figure 36 - Gas Connection
Tee Joint
Pipe Nipple
Cap
Approved Flexible
Gas Line
CSA Design-Certified Equipment
Shutoff Valve with 1 /
8
" NPT Tap*
Sediment Trap/Drip Leg
Natural Gas
From Gas Meter
(4.5" W.C. to 10.5" W.C. Pressure)
Propane/LP
From External Regulator
(11" W.C. to 13" W.C. Pressure)
NOTE : The gas line connection may be made using 1 /
2
" rigid tubing or an approved flex connector. Since
some municipalities have additional local codes it is always best to consult your local authorities and
the current edition of the National Fuel Gas Code ANSI.Z223.1, NFPA54. In Canada CAN/CGA-B149 (1 or
2) Installation Code.
WARNING
Only persons licensed to work
with gas piping may make the
necessary gas connections to
this appliance.
CAUTION
A manual shutoff valve must be
installed upstream of the appliance.
Union tee and plugged 1/8" NPT
pressure tapping point should be
installed upstream of the appliance.
See Figure 36.
CAUTION
Use pipe joint
sealant that is
resistant to liquid
petroleum (LP) gas.