Orifice Size And Manifold Pressure - International comfort products R9MSB0601716B Service And Technical Support Manual

Table 4 – Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate
(TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL)
ALTITUDE
RANGE
HEAT VALUE
AT ALTITUDE
ft (m)
0
(0)
to
2000
(610)
U.S.A.
2001 (611)
to
3000 (914)
Canada
2001 (611)
to
4500 (1372)
3001
(915)
to
4000
(1219)
4001
(1220)
to
5000
(1524)
5001
(1525)
to
6000
(1829)
6001
(1830)
to
7000
(2133)
440 04 6001 00
SINGLE-STAGE FURNACE
A V G . G A S
0.58
Orifice Manifold
(Btu/cu ft) No. Pressure
900 43 3.8
925 43 3.6
950 43 3.4
975 44 3.7
1000 44 3.5
1025 44 3.3
1050 44 3.2
1075 45 3.7
1100 46 3.7
800 42 3.4
825 43 3.8
850 43 3.6
875 43 3.4
900 44 3.7
925 44 3.5
950 44 3.3
975 44 3.2
1000 44 3.0
775 42 3.3
800 43 3.8
825 43 3.6
850 44 3.8
875 44 3.6
900 44 3.4
925 44 3.2
950 44 3.1
750 42 3.3
775 43 3.7
800 43 3.5
825 44 3.8
850 44 3.5
875 44 3.3
900 44 3.2
925 44 3.0
725 42 3.2
750 43 3.7
775 43 3.4
800 44 3.7
825 44 3.5
850 44 3.3
875 44 3.1
900 44 2.9
675 42 3.4
700 42 3.2
725 43 3.6
750 43 3.4
775 44 3.6
800 44 3.4
825 44 3.2
850 44 3.0
Specifications subject to change without notice.
S P E C F I C I G R A V T I Y O F N A T U
0.60 0.62
Orifice Manifold Orifice
No. Pressure No.
42 3.2 42
43 3.7 43
43 3.5 43
44 3.8 43
44 3.6 44
44 3.5 44
44 3.3 44
45 3.8 44
46 3.8 45
42 3.5 42
42 3.3 42
43 3.7 42
43 3.5 43
44 3.8 43
44 3.6 44
44 3.4 44
44 3.3 44
44 3.1 44
42 3.4 42
42 3.2 42
43 3.7 43
43 3.5 43
44 3.7 43
44 3.5 44
44 3.4 44
44 3.2 44
42 3.4 42
43 3.8 42
43 3.6 43
43 3.4 43
44 3.7 44
44 3.5 44
44 3.3 44
44 3.1 44
42 3.3 42
43 3.8 42
43 3.5 43
44 3.8 43
44 3.6 44
44 3.4 44
44 3.2 44
44 3.0 44
42 3.5 42
42 3.3 42
43 3.7 43
43 3.5 43
44 3.7 43
44 3.5 44
44 3.3 44
44 3.1 44
R A L G A S
0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.3 42 3.4
3.8 42 3.2
3.6 43 3.7
3.4 43 3.6
3.8 43 3.4
3.6 44 3.7
3.4 44 3.5
3.3 44 3.4
3.8 44 3.2
3.6 42 3.7
3.4 42 3.5
3.2 42 3.3
3.7 43 3.8
3.5 43 3.6
3.8 43 3.4
3.6 44 3.7
3.4 44 3.5
3.2 44 3.3
3.5 42 3.6
3.3 42 3.4
3.8 42 3.2
3.6 43 3.7
3.4 43 3.5
3.7 44 3.8
3.5 44 3.6
3.3 44 3.4
3.5 42 3.6
3.3 42 3.4
3.7 43 3.8
3.5 43 3.6
3.8 43 3.4
3.6 44 3.7
3.4 44 3.5
3.2 44 3.3
3.4 42 3.5
3.2 42 3.3
3.7 43 3.8
3.4 43 3.5
3.7 44 3.8
3.5 44 3.6
3.3 44 3.4
3.1 44 3.2
3.6 42 3.8
3.4 42 3.5
3.8 42 3.3
3.6 43 3.7
3.4 43 3.5
3.6 44 3.7
3.4 44 3.5
3.2 44 3.3
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