Beckett CG50 - Manual (Page 7)

7 CG15, CG25, CG50 Burner Manual
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.
Flange mounting arrangement (Includes high-temperature
gasket and/or fi ber rope for pressure fi ring).
Verify Firing 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 Inside Dimensions (inches)
Burner
Model
Width
‘W’
Height
‘H’
Length
‘L’ at Min
H & W*
Burner
Head
Centerline
to fl oor ‘A’
CG15.1S 15 16 42 7
CG15.2S 16 17 45 8
CG15.3S 17 18 47 8
CG15.4S 18 19 50 9
CG25.1S 19 20 45 9
CG25.2S 20 21 48 10
CG25.3S 21 22 50 10
CG25.4S 22 23 52 11
CG25.5S 23 25 55 11
CG50.1S 21 23 55 10
CG50.2S 22 24 58 11
CG50.3S 24 26 62 12
CG50.4S 25 27 65 12
CG50.5S 27 29 70 13
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 fi ring capacity depends on the furnace
pressure. Use the charts shown in Figure 3A, Figure
3B, and Figure 3C, to verify the correct burner
confi guration for the input rate.
Refer to Figures 4 & 5 to verify the air tube assembly
length and mounting insertion dimensions.
○
○
○
Figure 2 - Minimum Combustion Chamber Dimensions
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. y
y
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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 fl ue locations. Increased
height and width can decrease the length requirement.
When shaping is too severe fl ames impinge on the walls.
Impingement causes CO and carbon 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 factory testing of all new burner/
furnace combinations by the furnace manufacturer and/or
R. W. Beckett Corp.
The volume of the furnace also
infl uences the combustion process.
R. W. Beckett Corp. recommends at least 1 cubic foot of
furnace volume for each 150,000 BTU/Hr of fi ring rate.
Section: Pre-installation Checklist