77
Table 22 -- Orifice Size and Manifold Pressure (In. W.C.) for Gas Input Rate (Continued)
To Be Used with Modulating Furnaces 59MN7A060V21--20 Only
SAGLARUTANFOYTIVARGCIFICEPSSAG.GVA
HEATVALUE0.580.600.620.64
AT ALTITUDE Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press
(Btu/cu ft) No. Max/Min No. Max/Min No. Max/Min No. Max/Min
ft (m)
(TABULATED DATA BASED ON 20,200 BTUH MAX-HEAT / 8,000 BTUH MIN-HEAT PER BURNER,
DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL)
ALTITUDE
RANGE
650 42 3.4 /0.55 42 3.6 /0.55 42 3.7 /0.60 42 3.8 /0.60
7001 675 42 3.2 /0.50 42 3.3 /0.50 42 3.4 /0.55 42 3.5 /0.55
(2134) 700 43 3.6 /0.55 43 3.7 /0.60 42 3.2 /0.50 42 3.3 /0.50
725 43 3.4 /0.55 43 3.5 /0.55 43 3.6 /0.55 43 3.7 /0.60
750 44 3.6 /0.55 44 3.7 /0.60 43 3.4 /0.55 43 3.5 /0.55
8000 775 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55 44 3.7 /0.60
(2438) 800 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55 44 3.5 /0.55
825 46 3.8 /0.60 45 3.7 /0.60 44 3.2 /0.50 44 3.3 /0.50
625 42 3.4 /0.55 42 3.5 /0.55 42 3.7 /0.55 42 3.8 /0.60
8001 650 42 3.2 /0.50 42 3.3 /0.50 42 3.4 /0.55 42 3.5 /0.55
(2439) 675 43 3.6 /0.55 43 3.7 /0.60 43 3.8 /0.60 42 3.2 /0.50
700 44 3.8 /0.60 43 3.4 /0.55 43 3.6 /0.55 43 3.7 /0.55
725 44 3.6 /0.55 44 3.7 /0.60 44 3.8 /0.60 43 3.4 /0.55
9000 750 44 3.3 /0.50 44 3.4 /0.55 44 3.5 /0.55 44 3.7 /0.55
(2743) 775 45 3.8 /0.60 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55
9001 600 42 3.4 /0.55 42 3.5 /0.55 42 3.6 /0.55 42 3.8 /0.60
(2744) 625 43 3.8 /0.60 42 3.2 /0.50 42 3.3 /0.55 42 3.5 /0.55
650 43 3.5 /0.55 43 3.6 /0.55 43 3.8 /0.60 42 3.2 /0.50
675 44 3.8 /0.60 43 3.4 /0.55 43 3.5 /0.55 43 3.6 /0.55
10000 700 44 3.5 /0.55 44 3.6 /0.55 44 3.7 /0.60 44 3.8 /0.60
(3048) 725 44 3.3 /0.50 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55
* Orifice numbers shown in BOLD are factory-installed.
U.S.A. Only
to
U.S.A. Only
to
U.S.A. Only
to
A11621B
59MN7A
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