Gas Information; Fuel Conversion; Gas Pressure; Gas Service Access - Hearth & Home B41L-AU Installation Manual

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Gas Information

A. Fuel Conversion
• Make sure the appliance is compatible with available gas
types.
• Conversions must be made by a qualified service
technician using Hearth & Home Technologies specified
and approved parts.
B. Gas Pressure
WARNING! Risk of Explosion! An in-line regulator
MUST be installed if the gas pressure exceeds 3.4 kPa.
Failure to install a regulator could damage valve.
Pressure requirements for B41L-AU fireplaces are shown
in the table below.
Two taps are provided on the right hand side of the gas
control for a test gauge connection to measure the inlet
and outlet pressures.
The fireplace and its individual shut-off valve must be dis-
connected from the gas supply piping system during any
pressure testing of the system at test pressures in excess
of 6 kPa.
If the fireplace must be isolated from the gas supply pip-
ing system by closing an individual shut-off valve, it must
be of the handle-less type.
• Optimum appliance performance requires proper input
pressures.
• Pressure requirements are:

Gas Pressure

Minimum inlet pressure
Maximum inlet pressure
Manifold pressure
WARNING! Risk of Fire or Explosion! High pressure
will damage valve. Low pressure could cause explosion.
• Verify inlet pressures. Verify minimum pressures when
other household gas appliances are operating.
• Install regulator upstream of valve if line pressure is
greater than 1/2 psig.
WARNING
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.
Natural Gas Propane
1.13 kPa 2.75 kPa
3.40 kPa 3.40 kPa
.87 kPa 2.40 kPa
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
C. Gas Service Access
Access Through the Control Cavity
The lower access cover panel is removable if finishing
material has not been previously installed. See Section
8.A for removal instructions.
Access Through the Valve Assembly
1. Locate and remove the two screws that secure the
base pan to the appliance. See Figure 9.1. Remove
base pan. Retain screws.
REMOVE 2 SCREWS
Figure 9.1 Base Pan Removal
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