Bryant 310AAV instruction manual AT Altitude

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

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

ALTITUDE					SPECIFIC GRAVITY OF NATURAL GAS
		AVG. GAS		0.58		0.60		0.62		0.64
RANGE
		HEAT VALUE
FT. (M)			Orifice	Manifold	Orifice	Manifold	Orifice	Manifold	Orifice	Manifold
		AT ALTITUDE
			No.	Pressure	No.	Pressure	No.	Pressure	No.	Pressure
		(BTU/CU FT.)
		900	42	3.2	42	3.3	42	3.4	42	3.5
		925	43	3.7	43	3.8	42	3.2	42	3.3
		950	43	3.5	43	3.6	43	3.7	43	3.8
	0 to 2000	975	43	3.3	43	3.4	43	3.5	43	3.7
U.S.A.		1000	44	3.6	43	3.3	43	3.4	43	3.5
	(0 to 610)
		1025	44	3.4	44	3.6	43	3.2	43	3.3
		1050	44	3.3	44	3.4	44	3.5	43	3.2
		1075	45	3.8	44	3.2	44	3.3	44	3.4
		1100	46	3.8	45	3.7	44	3.2	44	3.3
		800	43	3.8	42	3.2	42	3.3	42	3.4
		825	43	3.5	43	3.7	43	3.8	42	3.2
	2001 to	850	43	3.3	43	3.5	43	3.6	43	3.7
		875	43	3.2	43	3.3	43	3.4	43	3.5
	3000
U.S.A.		900	43	3.0	43	3.1	43	3.2	43	3.3
	(610 to
		925	43	2.8	43	2.9	43	3.0	43	3.1
	914)
		950	43	2.7	43	2.8	43	2.9	43	2.9
		975	43	2.5	43	2.6	43	2.7	43	2.8
		1000	43	2.4	43	2.5	43	2.6	43	2.7
		775	43	3.5	43	3.7	43	3.8	42	3.2
		800	43	3.3	43	3.4	43	3.5	43	3.7
	3001 to	825	43	3.1	43	3.2	43	3.3	43	3.4
U.S.A.	4000	850	43	2.9	43	3.0	43	3.1	43	3.2
	(914 to	875	43	2.8	43	2.9	43	3.0	43	3.1
	1219)
		900	43	2.6	43	2.7	43	2.8	43	2.9
		925	43	2.5	43	2.6	43	2.7	43	2.7
		950	43	2.4	43	2.4	43	2.5	43	2.6
		750	43	3.3	43	3.4	43	3.5	43	3.6
		775	43	3.1	43	3.2	43	3.3	43	3.4
	4001 to	800	43	2.9	43	3.0	43	3.1	43	3.2
U.S.A.	5000	825	43	2.7	43	2.8	43	2.9	43	3.0
	(1219 to	850	43	2.6	43	2.7	43	2.8	43	2.8
	1524)
		875	43	2.4	43	2.5	43	2.6	43	2.7
		900	43	2.3	43	2.4	43	2.5	43	2.5
		925	43	2.2	43	2.2	43	2.3	43	2.4

* Orifice numbers 43 are factory installed.

310AAV

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