Verify Firing Rate; Verify Air Tube - Beckett CF 2300A Instruction Manual

Verify firing rate

• Refer to appliance manufacturer's instructions (if avail-
able) for firing rate and nozzle selection. Otherwise, the
maximum recommended firing rate for the burner depends
on the length of the firing chamber and the distance from
the burner center to the chamber floor. Verify that the cham-
ber dimensions are at least as large as the minimum values
given in . If the appliance dimensions are smaller
Figure 1
than recommended, reduce the firing rate accordingly.

Verify air tube

• The information in this section may be disregarded if the
air tube is supplied by the appliance manufacturer.
• Two tube arrangements are available –
Tube KG — 7.0 to 19.9 GPH per
Tube — 10.0 to 19.9 GPH per
KS
• Maximum firing capacity depends on the firebox pressure.
Use Table 2 to verify the correct air tube type for the firing
rate required. Use Tube
provide the firing rate required.
• See Figure 2 to verify the correct air tube length and air
tube combination code.
Figure 1 – Min. combustion chamber dimensions
L
Minimum dimensions
Firing rate
(refractory-lined)
A
5 to 10 gph 8.0"
10 to 15 gph 9.0"
15 to 20 gph 11.0"
Form 6104 BCF-23-R0399
Instruction Manual – Model CF2300A Oil Burner
Table 2
Table 2
KS only when Tube KG cannot
A
(wet-base boilers)
L A L
35.0" 8.0" 40.0"
40.0" 9.0" 50.0"
55.0" 11.0" 60.0"
Figure 2 – Air tube mounting dimensions
T
G
D
F
E
Install the burner with a 2° pitch as shown.
(A.T.C. = Air Tube Combination)
Tube KG
T D
(Dim ) (Dim
All — "
6¾" CF 66 KG
—
10¼" CF 102 KG
13¾" CF 136 KG
17¾" CF 176 KG
Table 2 – Air tube capacity vs. firebox pressure
Firebox
pressure
No reserve
(In. w.c.)
air
0.0 19.9 GPH 19.9 GPH 19.9 GPH 19.9 GPH
0.2 19.2 GPH 19.1 GPH 19.7 GPH 19.6 GPH
0.4 18.5 GPH 18.3 GPH 19.5 GPH 19.3 GPH
0.6 17.9 GPH 17.6 GPH 19.4 GPH 19.1 GPH
2305
0.8 17.2 GPH 16.8 GPH 19.2 GPH 18.8 GPH
1.0 16.5 GPH 16.0 GPH 19.0 GPH 18.5 GPH
Note: 10% turndown indicates sufficient reserve air to reduce the CO
flue to 90% of its value.
Note: The above ratings may vary 5% due to variations in actual job conditions.
E Insertion depth
G Air tube to inside of chamber
– 0.25" ± 0.125"
T Air tube length
2°
1
D Tube diameter
2304
A.T.C. Codes
Tube KS
F T
) (Dim ) (Dim ) (Dim
" All —
6¾" CF 66 KS
— 8¾" CF 86 KS
11" CF 110 KS
14½" CF 144 KS
18½" CF 184 KS
Tube KG Tube KS
10% No reserve
turndown air
D F
) (Dim )
" "
10%
turndown
in the
2
5