Flue Vent System; Electrical Supply; Verify Burner Components; Verify Firing Input Range - Beckett CG25 Manual

Test For Gas Pipe Leaks
Leaking gas could result in asphyxiation, explo-
sion, or fire 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.
[3 Flue vent system
The flue 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 jurisdic-
tion for vent construction, capacity, and sizing.
Figure 2. Minimum Combustion Chamber Dimensions
[3 Electrical supply
Check the nameplate on the burner to verify that the pow-
er connections available are correct for the burner. Refer
to Figure 1. All power must be supplied through fused dis-
connect switches and comply with the latest edition of Na-
tional Electric Code NFPA 70 (Canada CSA C22.1) and
all other local or applicable codes.
[3 Verify burner components
Burner model can be checked from burner carton or
rating label on burner
Flange mounting arrangement (Includes high-
temperature gasket and/or fiber rope for pressure
firing)
[3 Verify firing input range
Refer to appliance manufacturer's instructions (if avail-
able) for the firing input range. Otherwise the maximum
recommended firing range for the burner depends on the
length and width of the firing chamber and the distance
from the burner center to the chamber floor. 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 firing rate accordingly.
Minimum Inside Dimensions (inches)
Burner Wdth Height Length Burner Head
Model 'W! 'H' 'L' at Min Centerline to
H & W* floor 'A'
CG15.1S 15 16 42 7
CG15.2S 16 17 45 8
CGIS.3S 17 18 47 8
CGIS.4S 18 19 50 9
CGS0.1S 21 23 55 10
CGS0.2S 22 24 58 11
CGS0.3S 24 26 62 12
CGS0.4S 25 27 65 12
CGS0.SS 27 29 70 13
j NOTICE ]
Dimensions shown are for cast iron sectional boilers with
uptakes between sections. For minimum dimensions of
other furnace types consult R.W. Beckett Corporation.
Flames are shaped by their furnaces and by its flue lo-
cations. Increased height and width can decrease the
length requirement. When shaping is too severe flames
impinge on the walls. Impingement causes CO and car-
bon deposits and may damage the wall. Maintaining
these minimum dimensions should prevent impingement,
but smaller furnaces may be acceptable depending upon
the results of applications testing. We recommend fac-
tory testing of all new burner/furnace combinations by the
furnace manufacturer and/or R. W. Beckett Corp.
NOTICE j
The volume of the furnace also influences the combus-
tion process. R. W. Beckett Corp. recommends at least
1 cubic foot of furnace volume for each 150,000 BTU/Hr
of firing rate.
[3
e
Verify burner air tube assembly
The information in this section may be disregarded
if the burner supplied by the appliance manufacturer
is a matched component.
Maximum firing capacity depends on the furnace
pressure. Use the charts shown in Figure 3A, Fig-
ure 3B, and Figure 3C, to verify the correct burner
configuration for the input rate.
Refer to Figures 4 & 5 to verify the air tube assem-
bly length and mounting insertion dimensions.
6 61 04 80G50 RoB