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19Heat & Glo • SL-550 / 750 / 950TV-D • 2053-985 Rev. J • 4/07
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 approved parts.
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.
B. Gas Pressures
Proper input pressures are required for optimum appliance
performance. Gas line sizing requirements need to be
made following NFPA51.
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.
Gas Information
9
NOTE: Gas line may be run from either side 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
approved) 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, un-faced insulation to prevent cold
air infi ltration.
Refer to Reference Section 16 for location of gas line
access in appliance.
Gas Leak Risk
• Support control when attaching pipe to
prevent bending gas line.
Pressure requirements for appliance are shown in the
table below. Minimum pressure must be met when other
household gas appliances are operating.
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.
WARNING
WARNING
WARNING