Beckett CF1400, CF2300 manual Air tube capacity Versus firebox pressure, ‰ Verify air tube

‰Verify air tube

The information in this section may be disregarded if the air tube is supplied by the appliance manufacturer.

yOn the CF1400, there are two tube arrangements available –

Tube A — 4.0 to 11.0 GPH per Table 2 Tube B — 7.0 to 13.6 GPH per Table 2

yThe CF1400 maximum firing capacity depends on the firebox pressure. Use Table 2 to verify the cor-

Figure 3 – Air tube mounting dimensions

Legend

EInsertion depth

GAir tube to inside of chamber: .25” ±.125” T Nozzle centerline to electrode tip - 1/4” D Nozzle face to electrode tip - 1/8”

Note: Install the burner with a 2° pitch as shown.

Air Tube Combination Codes

Model	Tube	Dimention	Dimention	Code	Dimension
		T	D		E
		6.75”	5.5”	CF 66 KD	-
	A	10.25”	5.5”	CF 102 KD	-
		13.75”	5.5”	CF 136 KD	-
CF1400
		6.75”	5.75”	CF 66 KE	-
		17.75”	5.5”	CF 176 KD	-
	B	10.25”	5.75”	CF 102 KE	-
		13.75”	5.75”	CF 136 KE	-
		17.75”	5.75”	CF 176 KE	-
		6.75”	6.5”	CF 66 KG	2.94”
	A	10.25”	6.5”	CF 102 KG	2.94”
		13.75”	6.5”	CF 136 KG	2.94”
CF2300		17.75”	6.5”	CF 176 KG	2.94”
		6.75”	8.125”	CF 66 KS	3.69”
	B	8.375”	8.125”	CF 86 KS	3.69”
		11.0”	8.125”	CF 110 KS	3.69”
		14.5”	8.125”	CF 144 KS	3.69”
		18.5”	8.125”	CF 184 KS	3.69”

rect air tube type for the firing rate required. Use Tube B only when Tube A cannot provide the firing rate required.

yOn the CF2300, there are two tube arrangements available –

Tube A — 7.0 to 19.9 GPH per Table 2 Tube B — 10.0 to 19.9 GPH per Table 2

yThe CF2300 maximum firing capacity depends on the firebox pressure. Use Table 2 to verify the cor- rect air tube type for the firing rate required. Use Tube B only when Tube A cannot provide the firing rate required.

ySee Figure 3 to verify the correct air tube length and air tube combination code.

Table 2 - Air tube capacity Versus firebox pressure

Air Tube Capacity vs Firebox Pressure

		Firebox	No	Reserve	10% Turndown
Model	Tube	Pressure
				Air	(GPH)
		(In W.C.)
		0.0		-	11.0
	A	0.2		-	10.5
		0.4		-	10.1
		0.6		-	9.6
CF1400		0.8		-	9.2
		0.0		13.6	12.2
		1.0		-	8.7
	B	0.2		13.1	11.7
		0.4		12.5	11.2
		0.6		12.0	10.8
		0.8		11.4	10.3
		1.0		10.9	9.8
		0.0		19.9	19.9
	A	0.2		19.2	19.1
		0.4		18.5	18.3
		0.6		17.9	17.6
CF2300		0.8		17.2	16.8
		0.0		19.9	19.9
		1.0		16.5	16.0
	B	0.2		19.7	19.6
		0.4		19.5	19.3
		0.6		19.4	19.1
		0.8		19.2	18.8
		1.0		19.0	18.5

Note: 10% turndown indicates sufficient reserve air to reduce the CO2 in the flue to 90% of its value.

Note: The above ratings may vary 5% due to variations in actual job conditions.

Form 6104 BCF23-R05 7