Monessen Hearth LEXINGTON LX32DV - Manual (Page 24)

24 51D0528
LX Series Direct Vent Gas Fireplace
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 appliance.
Figure 34
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 fire-
places.
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 34. 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 contaminants. 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.
only persons licensed to work with gas
piping may make the necessary gas
connections to this appliance.
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 34
3" Minimum
FP1978
gas connection
Pipe Nipple
Cap
Figure 34 -
Gas Connection
Tee Joint
Approved Flexible
Gas Line
CSA Design-Certified Equipment Shutoff Valve
with 1/8" NPT Tap*
Sediment Trap/Drip Leg
Natural Gas
From Gas Meter
(5.0" w.c. to 10.5" w.c. Pressure)
propane/Lp
From External Regulator
(11" w.c. to 13" w.c. Pressure)
FIRepLAce INStALLAtIoN
c
A
ut
Io
N
c
A
ut
Io
N
use pipe joint sealant that is resistant to
liquid petroleum (Lp) gas.
W
ARNING