KeepRite G9MAC0601714A - Page 15

SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MAC
Specifications subject to change without notice.
440 04 4201 03 15
Table 5
Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate
TO BE USED WITH MODULATING FURNACES (F/G)9MAC0602120 FURNACE ONLY
AVG. GAS SPECIFIC GRAVITY OF NATURAL GAS
HEAT VALUE 0.58 0.60 0.62 0.64
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
900 42 3.2 /0.50 42 3.3 /0.50 42 3.4 /0.55 42 3.5 /0.55
0 925 43 3.7 /0.55 43 3.8 /0.60 42 3.2 /0.50 42 3.3 /0.50
(0) 950 43 3.5 /0.55 43 3.6 /0.55 43 3.7 /0.60 43 3.8 /0.60
975 44 3.8 /0.60 43 3.4 /0.55 43 3.5 /0.55 43 3.6 /0.55
to 1000 44 3.6 /0.55 44 3.7 /0.60 44 3.8 /0.60 43 3.5 /0.55
1025 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55 44 3.8 /0.60
2000 1050 44 3.3 /0.50 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55
(610) 1075 45 3.8 /0.60 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55
1100 46 3.8 /0.60 45 3.7 /0.60 44 3.2 /0.50 44 3.3 /0.50
U.S.A. 800 42 3.4 /0.55 42 3.5 /0.55 42 3.7 /0.55 42 3.8 /0.60
2001 (611) 825 42 3.2 /0.50 42 3.3 /0.50 42 3.4 /0.55 42 3.6 /0.55
to 850 43 3.7 /0.60 43 3.8 /0.60 42 3.2 /0.50 42 3.3 /0.55
3000 (914) 875 43 3.5 /0.55 43 3.6 /0.55 43 3.7 /0.60 43 3.8 /0.60
900 44 3.8 /0.60 43 3.4 /0.55 43 3.5 /0.55 43 3.6 /0.55
Canada 925 44 3.6 /0.55 44 3.7 /0.60 44 3.8 /0.60 43 3.4 /0.55
2001 (611) 950 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55 44 3.7 /0.60
to 975 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55 44 3.6 /0.55
4500 (1372) 1000 45 3.7 /0.60 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55
775 42 3.4 /0.55 42 3.5 /0.55 42 3.6 /0.55 42 3.7 /0.60
3001 800 42 3.2 /0.50 42 3.3 /0.50 42 3.4 /0.55 42 3.5 /0.55
(915) 825 43 3.6 /0.55 43 3.7 /0.60 42 3.2 /0.50 42 3.3 /0.50
850 43 3.4 /0.55 43 3.5 /0.55 43 3.6 /0.55 43 3.8 /0.60
875 44 3.7 /0.60 44 3.8 /0.60 43 3.4 /0.55 43 3.6 /0.55
4000 900 44 3.5 /0.55 44 3.6 /0.55 44 3.7 /0.60 43 3.4 /0.55
(1219) 925 44 3.3 /0.50 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55
950 45 3.8 /0.60 44 3.2 /0.50 44 3.4 /0.55 44 3.5 /0.55
750 42 3.3 /0.50 42 3.4 /0.55 42 3.6 /0.55 42 3.7 /0.55
4001 775 43 3.8 /0.60 42 3.2 /0.50 42 3.3 /0.50 42 3.4 /0.55
(1220) 800 43 3.6 /0.55 43 3.7 /0.60 43 3.8 /0.60 42 3.2 /0.50
825 44 3.8 /0.60 43 3.5 /0.55 43 3.6 /0.55 43 3.7 /0.60
850 44 3.6 /0.55 44 3.7 /0.60 43 3.4 /0.55 43 3.5 /0.55
5000 875 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55 44 3.8 /0.60
(1524) 900 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55 44 3.6 /0.55
925 45 3.7 /0.60 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55
725 42 3.3 /0.50 42 3.4 /0.55 42 3.5 /0.55 42 3.6 /0.55
5001 750 43 3.7 /0.60 42 3.2 /0.50 42 3.3 /0.50 42 3.4 /0.55
(1525) 775 43 3.5 /0.55 43 3.6 /0.55 43 3.7 /0.60 42 3.2 /0.50
800 44 3.8 /0.60 43 3.4 /0.55 43 3.5 /0.55 43 3.6 /0.55
825 44 3.5 /0.55 44 3.7 /0.55 44 3.8 /0.60 43 3.4 /0.55
6000 850 44 3.3 /0.50 44 3.4 /0.55 44 3.6 /0.55 44 3.7 /0.60
(1829) 875 45 3.8 /0.60 44 3.3 /0.50 44 3.4 /0.55 44 3.5 /0.55
900 46 3.8 /0.60 45 3.7 /0.60 44 3.2 /0.50 44 3.3 /0.50
675 42 3.5 /0.55 42 3.6 /0.55 42 3.7 /0.60 42 3.8 /0.60
6001 700 42 3.2 /0.50 42 3.3 /0.50 42 3.5 /0.55 42 3.6 /0.55
(1830) 725 43 3.7 /0.60 43 3.8 /0.60 42 3.2 /0.50 42 3.3 /0.50
750 43 3.4 /0.55 43 3.5 /0.55 43 3.7 /0.55 43 3.8 /0.60
775 44 3.7 /0.60 44 3.8 /0.60 43 3.4 /0.55 43 3.5 /0.55
7000 800 44 3.5 /0.55 44 3.6 /0.55 44 3.7 /0.60 44 3.8 /0.60
(2133) 825 44 3.2 /0.50 44 3.4 /0.55 44 3.5 /0.55 44 3.6 /0.55
850 45 3.7 /0.60 44 3.2 /0.50 44 3.3 /0.50 44 3.4 /0.55
U.S.A. Only
to
U.S.A. Only
to
ft (m)
U.S.A. and CanadaU.S.A. and CanadaU.S.A. Only
to
U.S.A. Only
to
(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
L11F100A