Gas Pipe Installation - Vermont Castings 33CFDV(N/P)(V/I)SB Installation And Operating Instructions Manual

CFDV Series Gas Fireplace

GAS PIPE INSTALLATION

Only persons licensed to work with natural
or lp gas 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 fl ex 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 52
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 fi replace.
Check your building codes for any special requirements for
locating equipment shutoff valve to fi replaces.
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 52
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 valve.
We recommend that you install a sediment trap/drip leg in
supply line as shown in Figure 52. 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 contami-
nants 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.
Use pipe joint sealant that is resistant to
liquid petroleum (LP) gas.
28
CHECK GAS PRESSURE – MILLIVOLT
1. Check gas type. The gas supply must be the same as
stated on the appliance's rating decal. If the gas supply
is different from the fi replace, STOP! Do not install the
appliance. Contact your dealer immediately.
2. To facilitate easier installation, an 18" (457 mm) fl ex line
with manual shut-off valve has been provided with this
appliance. Install and attach 1/2" gas line onto shut-off
valve.
3. After completing gas line connection, purge air from
gas line and test all gas joints from the gas meter to the
fi replace for leaks. Use a solution of 50/50 water and
soap or a gas sniffer.
4. To adjust fl ame height, turn HI/LO knob to HI to get
maximum pressure to burner. Turn HI/LO knob to LO
to get minimum pressure.
5. To check gas pressures at valve, turn captured screw
counter clockwise 2 or 3 turns and then place tubing
to pressure gauge over test point. Turn unit to high.
Figure 53. After taking pressure reading, be sure and
turn captured screw clockwise fi rmly to reseal. Do not
over torque. Check test points for gas leaks.
Approved Flexible
Gas Line
Tee Joint
Sediment Trap/
Pipe Nipple
Drip Leg
Figure 52 –
Gas Connection
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)
GAS PIPE INSTALLATION
CSA Design-Certifi ed
Equipment Shutoff Valve
with 1/8" NPT Tap*
3 "
Cap M i
n i m
20306739
u m