Beckett CF 2300A - Manual (Page 5)

Instruction Manual – Model CF2300A Oil Burner
5
Form 6104 BCF-23-R0399
Table 2 – Air tube capacity vs. firebox pressure
Figure 2 – Air tube mounting dimensions
2304
E
D
G
T
2° 1
F
E Insertion depth
G Air tube to inside of chamber
– 0.25" ± 0.125"
T Air tube length
D Tube diameter
Figure 1 – Min. combustion chamber dimensions
① Install the burner with a 2° pitch as shown.
2305
A
L
❏
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
Figure 1 . If the appliance dimensions are smaller
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 Table 2
Tube KS — 10.0 to 19.9 GPH per Table 2
• 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 KS only when Tube KG cannot
provide the firing rate required.
• See Figure 2 to verify the correct air tube length and air
tube combination code.
Firing rate
Minimum dimensions
(refractory-lined) (wet-base boilers)
A L A L
5 to 10 gph 8.0" 35.0" 8.0" 40.0"
10 to 15 gph 9.0" 40.0" 9.0" 50.0"
15 to 20 gph 11.0" 55.0" 11.0" 60.0"
A.T.C. Codes
(A.T.C. = Air Tube Combination)
Tube KG Tube KS
(Dim T ) (Dim D ) (Dim F ) (Dim T ) (Dim D ) (Dim F )
All — 6¹⁄₂ ” 2¹⁵⁄₁₆ ” All — 8¹⁄₈ ” 3¹¹⁄₁₆ ”
6¾” CF 66 KG 6¾” CF 66 KS
— — 8¾” CF 86 KS
10¼” CF 102 KG 11” CF 110 KS
13¾” CF 136 KG 14½” CF 144 KS
17¾” CF 176 KG 18½” CF 184 KS
Firebox
pressure
(In. w.c.)
Tube KG Tube KS
No reserve
air
10%
turndown
No reserve
air
10%
turndown
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
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
2
in the
flue to 90% of its value.
Note: The above ratings may vary 5% due to variations in actual job conditions.