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Verify
burner
air tube
assembly
•
The information in this section may be disregard-
ed if the burner supplied by the appliance manu-
facturer is a matched component.
Maximum firing capacity depends on the furnace
pressure. Use the charts shown in Figure 3 and
Figure 4, to verify the correct burner configura-
tion for the input rate.
•
Refer to Figure 5 to verify the air tube assembly
length and mounting insertion dimensions.
i
NOTICE
1
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.
NOTICE
I
Flames are shaped by their furnaces and by its flue Io=
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.
Figure 3. Maximum Capacity (at 3% 0 2) vs Furnace Pressure - Step Spud Configuration
1400
"r 1300
1200
>:, 1100
=_
o 1000
Q,.
900
O
E
800
E
700
=_
×
600
q
500
400
-----.-.__,.,__._.
.
=
=
=
=
=
=
====
=
_
.
==,=_
=
i
0
0.2
0.4
0.6
0.8
Furnace Pressure, In. W.C.
_CGI0.6S
_-CGI0.5S
- _- CGI0.4S
-4- ,CGI0.3S
-_<- , CG 10.2S
+CGI0.1S
6104
BCGIO
R08
7
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