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Heat & Glo LifeStyle Collection • Twilight-II-B • 2108-900 Rev. G • 8/07 15
NOTE: Have the gas supply line installed in accordance
with local building codes, if any. If not, follow ANSI
223.1. Installation should be done by a qualifi ed installer
approved and/or licensed as required by the locality. (In
the Commonwealth of Massachusetts installation must be
performed by a licensed plumber or gas fi tter.)
A. Fuel Conversions
Before making gas connections ensure that appliance be-
ing installed is compatible with the available gas type.
Any natural or propane gas conversions necessary to
meet the appliance and locality needs must be made by
a qualifi ed technician using Hearth & Home Technologies
specifi ed and listed gas conversion kit.
B. Gas Pressures
Proper input pressures are required for optimum appliance
performance. Gas line sizing requirements need to be
made following NFPA51.
Fire Risk.
Explosion Hazard.
High pressure will damage valve.
• Disconnect gas supply piping BEFORE
pressure testing gas line at test pressures
above 1/2 psig.
• Close the manual shutoff valve BEFORE
pressure testing gas line at test pressures
equal to or less than 1/2 psig.
C. Gas Connection
Verify inlet pressures.
• High pressure may cause overfi re condition.
• Low pressure may cause explosion.
• Verify minimum pressures when other
household gas appliances are operating.
Install regulator upstream of valve if line
pressure is greater than 1/2 psig.
6
6
Gas Information
NOTE: Gas line may be run from either side or the bottom of
the appliance
provided the hole in the outer wrap does NOT
exceed 2-1/2
inches in diameter and does not penetrate
the fi rebox.
NOTE: A listed (and Commonwealth of Massachusetts ap-
proved) 1/2 inch (13 mm) T-handle manual shut-off valve and
fl exible gas connector are connected to the 1/2 inch (13 mm)
control valve inlet.
• If substituting for these components, please consult
local codes for compliance.
NOTE: The gap between the supply piping and gas access
hole may be caulked with high temperature caulk or stuffed
with non-combustible unfaced insulation to prevent cold air
infi ltration.
Pressure requirements for appliance are shown in the
table below. Minimum pressures must be met when other
household gas appliances are operating.
Refer to Reference Section 13 for location of gas line ac-
cess in appliance.
Gas Leak Risk
• Support control when attaching pipe to prevent
bending gas line.
WARNING
WARNING
WARNING
Pressure Natural Gas Propane
Minimum
Inlet Pressure
5.0 inches
w.c.
11.0 inches
w.c.
Maximum Inlet
Gas Pressure
14.0 inches
w.c.
14.0 inches
w.c.
Manifold
Pressure
3.5 inches
w.c.
10.0 inches
w.c.