Majestic 490IDVNV Installation And Operating Instructions Manual page 18

INSERT 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
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.
A listed manual shutoff is factory installed upstream of appliance. Union tee and plugged
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.
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.
Approved Flexible
Gas Line Supplied
with Appliance
Sediment Trap/Drip Leg
18
1 / " rigid tubing or an approved flex connector. Since
2
Tee Joint
Pipe Nipple
Cap
Figure 15 - Gas Connection
A manual shutoff valve is factory
installed upstream of the appliance.
union tee and plugged
pressure tapping point should be
installed upstream of the appliance.
See Figure 15.
1
/ " NPT pressure tapping point
8
use pipe joint sealant that is resistant
to liquid petroleum (LP) gas.
Natural Gas
From Gas Meter
(4.5" W.C. to 10.5" W.C. Pressure)
Propane/LP
3 "
From External Regulator
M i
n i m
(11" W.C. to 13" W.C. Pressure)
u m
1 / " NPT
8
57D0215