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Flange mounting arrangement (Includes high-
temperature gasket and /or fi ber rope for pressure
fi ring).
Verify fi ring input range
Refer to appliance manufacturer’s instructions (if
available) for the fi ring input range. Otherwise the
maximum recommended fi ring range for the burner
depends on the length and width of the fi ring chamber
and the distance from the burner center to the chamber
fl oor. Verify that the chamber dimensions are at least as
large as the minimum values given in Figure 2. If the
appliance dimensions are smaller, reduce the fi ring rate
accordingly.
○
Minimum Combustion
Chamber Dimensions (inches)
Input
Firing
Rate in
MBH
Length
‘L’
Width
‘W’
Height
‘H’
Burner Head
Centerline to
fl oor ‘A’
300-400 18 12 12 6
400-600 22 14 14 7
600-900 26 16 16 8
900-1200 30 18 18 9
Figure 2. Minimum Combustion Chamber Dimensions
Clearances
With the burner installed in the appliance, there must
be adequate space in front of and on the sides of the
burner to allow access and operation. Verify that the
clearance dimensions comply with local codes and with
the appliance manufacturer’s recommendations.
Fuel gas supply
Verify that the gas supply piping complies with all
applicable local codes and the latest edition of the
National Fuel Gas Code ANSI Z223.1 (NFPA 54).
Insure that the supply gas pipe size is capable of
providing at least the minimum pressure required to the
burner gas train inlet at the burner’s full capacity rating.
Refer to Table 1.
Flue vent system
The fl ue gas vent system must be in good condition
and must comply with National Fuel Gas Code ANSI
Z223.1 (NFPA 54) and all other applicable codes having
jurisdiction for vent construction, capacity, and sizing.
Electrical supply
Check the nameplate on the burner to verify that the
power connections available are correct for the burner.
Refer to Figure 1. All power must be supplied through
fused disconnect switches and comply with the latest
edition of National Electric Code NFPA 70 (Canada CSA
C22.1) and all other local or applicable codes.
Verify burner components
Burner model can be checked from burner carton or
rating label on burner.
○
Test For Gas Pipe Leaks
Leaking gas could result in asphyxiation, explosion,
or fi re hazard.
The gas supply piping must be absolutely leak-free.
Pressure test the gas piping with air that is at least
three times greater than the gas pressure being
used.
Verify that there are no leaks before proceeding.
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Section: Pre-installation Checklist
Dimensions shown are for cast
iron sectional boilers with uptakes
between sections. For minimum dimensions of other
furnace types consult R.W. Beckett Corporation.