Bryant 310AAV instruction manual Specific Gravity of Natural GAS, Altitude

310AAV

Table 16—Orifice Size* and Manifold Pressure (In. W.C.) for Gas Input Rate (Continued)

(Tabulated data based on 21,000 btuh per burner, derated 4 percent for each 1000 ft. (305 M) above sea level)

ALTITUDE		AVG. GAS			SPECIFIC GRAVITY OF NATURAL GAS
		HEAT VALUE
				0.58		0.60		0.62		0.64
RANGE		AT
FT. (M)		ALTITUDE	Orifice	Manifold	Orifice	Manifold	Orifice	Manifold	Orifice	Manifold
		(BTU/CU FT.)	No.	Pressure	No.	Pressure	No.	Pressure	No.	Pressure
		725	43	3.1	43	3.2	43	3.3	43	3.4
		750	43	2.9	43	3.0	43	3.1	43	3.2
	5001 to	775	43	2.7	43	2.8	43	2.9	43	3.0
U.S.A.	6000	800	43	2.5	43	2.6	43	2.7	43	2.8
	(1524 to
		825	43	2.4	43	2.5	43	2.5	43	2.6
	1829)
		850	43	2.2	43	2.3	43	2.4	43	2.5
		875	43	2.1	43	2.2	43	2.3	43	2.3
		900	43	2.0	43	2.1	43	2.1	43	2.2
		675	43	3.1	43	3.2	43	3.3	43	3.4
		700	43	2.9	43	3.0	43	3.1	43	3.2
	6001 to	725	43	2.7	43	2.8	43	2.9	43	2.9
U.S.A.	7000	750	43	2.5	43	2.6	43	2.7	43	2.8
	(1829 to
		775	43	2.3	43	2.4	43	2.5	43	2.6
	2134)
		800	43	2.2	43	2.3	43	2.3	43	2.4
		825	43	2.1	43	2.1	43	2.2	43	2.3
		850	48	3.7	43	2.0	43	2.1	43	2.1
		650	43	2.9	43	3.0	43	3.1	43	3.2
		675	43	2.7	43	2.7	43	2.8	43	2.9
	7001 to	700	43	2.5	43	2.6	43	2.6	43	2.7
U.S.A.	8000	725	43	2.3	43	2.4	43	2.5	43	2.5
	(2134 to
		750	43	2.1	43	2.2	43	2.3	43	2.4
	2438)
		775	43	2.0	43	2.1	43	2.2	43	2.2
		800	48	3.6	48	3.7	43	2.0	43	2.1
		825	48	3.3	48	3.5	48	3.6	48	3.7
		625	43	2.7	43	2.7	43	2.8	43	2.9
	8001 to	650	43	2.5	43	2.5	43	2.6	43	2.7
U.S.A.	9000	675	43	2.3	43	2.4	43	2.4	43	2.5
	(2438 to
		700	43	2.1	43	2.2	43	2.3	43	2.3
	2743)
		725	48	3.7	43	2.0	43	2.1	43	2.2
		750	48	3.5	48	3.6	48	3.7	43	2.0
		600	43	2.4	43	2.5	43	2.6	43	2.7
	9001 to	625	43	2.3	43	2.3	43	2.4	43	2.5
	10,000	650	43	2.1	43	2.2	43	2.2	43	2.3
U.S.A.	(2743 to	675	48	3.6	48	3.8	43	2.1	43	2.1
	3048)
		700	48	3.4	48	3.5	48	3.6	48	3.7
		725	49	3.7	49	3.8	48	3.4	48	3.5
		775	49	3.8	48	3.4	48	3.5	48	3.6

* Orifice numbers 43 are factory installed.

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