Vent system
The flue gas venting system must be in good condition and must comply with all applicable codes.
Verify burner components —
yBurner box, Model CF1400 or CF2300A
yAir tube assembly
yMounting flange kit
yPedestal mounting assembly kit (recommended)
yOil nozzle, per Table 1 — Use only 45° to 70° solid pattern nozzles unless otherwise shown by appliance manufacturer or on the burner nameplate rating label.
Find the required firing rate in the 300 psig column (high fire rate).
Select the corresponding nozzle from column 1 (Rated gph @ 100 psig).
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 de- pends on the length 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 mini- mum values given in Figure 2. If the appliance dimen- sions are smaller than recommended, reduce the firing rate accordingly.
Table 1 - Nozzle capacities
Rated |
| Pressure - Pounds per square inch |
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gph |
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@ 100 | 125 | 140 | 150 | 175 | 200 | 250 |
| 275 | 300 |
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psig |
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3.00 | 3.35 | - | 3.67 | 3.97 | 4.24 | 4.74 |
| 4.97 | 5.20 |
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3.50 | 3.91 | - | 4.29 | 4.63 | 4.95 | 5.53 |
| 5.80 | 6.06 |
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4.00 | 4.47 | - | 4.90 | 5.29 | 5.66 | 6.32 |
| 6.63 | 6.93 |
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4.50 | 5.04 | 5.32 | 5.51 | 5.95 | 6.36 | 7.11 |
| 7.46 | 7.79 |
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5.00 | 5.59 | 5.92 | 6.12 | 6.61 | 7.07 | 7.91 |
| 8.29 | 8.66 |
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5.50 | 6.15 | 6.51 | 6.74 | 7.27 | 7.78 | 8.70 |
| 9.12 | 9.53 |
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6.00 | 6.71 | 7.10 | 7.35 | 7.94 | 8.49 | 9.49 |
| 9.95 | 10.39 |
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6.50 | 7.26 | 7.69 | 7.96 | 8.60 | 9.19 | 10.28 |
| 10.78 | 11.26 |
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7.00 | 7.82 | 8.28 | 8.57 | 9.25 | 9.90 | 11.07 |
| 11.61 | 12.12 |
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7.50 | 8.38 | 8.87 | 9.19 | 9.91 | 10.61 | 11.86 |
| 12.44 | 12.99 |
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8.00 | 8.94 | 9.47 | 9.80 | 10.58 | 11.31 | 12.65 |
| 13.27 | 13.86 |
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8.50 | 9.50 | 10.06 | 10.41 | 11.27 | 12.02 | 13.44 |
| 14.10 | 14.72 |
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9.00 | 10.06 | 10.65 | 11.02 | 11.91 | 12.73 | 14.23 |
| 14.93 | 15.59 |
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9.50 | 10.60 | 11.24 | 11.64 | 12.60 | 13.44 | 15.02 |
| 15.75 | 16.45 |
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10.00 | 11.18 | 11.83 | 12.25 | 13.23 | 14.14 | 15.81 |
| 16.58 | 17.32 |
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10.50 | 11.74 | 12.42 | 12.86 | 13.89 | 14.85 | 16.60 |
| 17.41 | 18.19 |
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11.00 | 12.30 | 13.02 | 13.47 | 14.55 | 15.56 | 17.39 |
| 18.24 | 19.05 |
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12.00 | 13.42 | 14.20 | 14.70 | 15.88 | 16.97 | 18.97 |
| 19.90 | 20.79 |
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Figure 2 – Chamber Dimensions
Model | Firing |
| Minimum Dimensions |
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| Rate |
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| Refractory Lined | |||||
| (gph) | |||||
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| Boilers | ||
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| A |
| L | A | L |
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CF1400 | 0 to 5 | 7.0” |
| 25.0” | 7.0” | 25.0” |
| 5 to 10 | 8.0” |
| 35.0” | 8.0” | 40.0” |
CF2300 | 5 to 10 | 8.0” |
| 35.0” | 8.0” | 40.0” |
| 10 to 15 | 9.0” |
| 40.0” | 9.0” | 50.0” |
| 15 to 20 | 11.0” |
| 55.0” | 11.0” | 60.0” |
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L
A
2305
6 | Form 6104 |
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