Gas Pipe Installation - Monessen Hearth MDV500, MDV600 Installation & Operating Instructions Manual

fIreplace InstallatIon
only persons licensed to work with gas
piping may make the necessary gas
connections to this appliance.
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 CSA-B149 (1 or 2) Installation Code.
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 appli-
ance. Figure 46
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 seal-
ant in pipe could result in clogged burner system valves.
Approved Flexible
Gas Line
75D2523
Sediment Trap/Drip Leg
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. Figure 46
We recommend that you install a sediment trap/drip leg
in supply line as shown in Figure 46. 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 traps moisture and contami-
nants. This 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.
use pipe joint sealant that is resistant to
liquid petroleum (lp) gas.
CSA Design-Certified Equipment Shutoff Valve
with 1/8" NPT Tap*
Tee Joint
Pipe Nipple
Cap
Figure 46 -
Gas Connection
FP1978
gas connection
MDV Series Direct Vent Gas Fireplace
3 "
M
i n i
m u
m
natural gas
From Gas Meter
(4.0" w.c. to 10.5" w.c. Pressure)
propane/lp
From External Regulator
(11" w.c. to 13" w.c. Pressure)
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