Monessen Hearth Direct Vent Gas Insert IDV490NVC - Manual (Page 18)

18 57D0016
3" M
inim
um
INSERT INSTALLATION
A listed manual shutoff is factory installed upstream of appliance. Union tee and plugged 1 /
8
" NPT pressure tapping point
should be installed upstream of the appliance. See Figure 15.
IMPORTANT: The main gas valve is for turning on or shutting off the gas to the insert.
Check your building codes for any special requirements for
locating equipment shutoff valve to inserts.
Apply pipe joint sealant lightly to threads. This will prevent
excess sealant from going into pipe. Excess sealant in pipe
could result in clogged burner system valves.
A manual shutoff valve is factory
installed upstream of the appliance.
Union tee and plugged
1 /
8
" NPT
pressure tapping point should be
installed upstream of the appliance.
See Figure 15.
CAUTION
Use pipe joint sealant that is resistant
to liquid petroleum (LP) gas.
CAUTION
We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 15. 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.
Figure 15 - Gas Connection
Tee Joint
Pipe Nipple
Cap
Approved Flexible
Gas Line Supplied
with Appliance
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.
Only persons licensed to work with
gas piping may make the necessary
gas connections to this appliance.
W
ARNING