Orifice Size And Manifold Pressure - International comfort products N9MSE0261408A Service And Technical Support Manual

SERVICE AND TECHNICAL SUPPORT MANUAL
Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate − 26,000 BTUH Single
Table 3
Stage
(TABULATED DATA BASED ON 13,000 BTUH PER BURNER, DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL
ALTITUDE
RANGE
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)
* Orifice numbers shown in BOLD are factory-installed.
10
ORIFICE SIZE* AND MANIFOLD PRESSURE (IN WC) FOR GAS INPUT RATE
AVG. GAS
0.58
HEAT VALUE
AT ALTITUDE Orifice Manifold
(Btu/cu ft) No. Pressure
900 44 1.8
925 44 1.7
950 44 1.6
975 44 1.6
1000 44 1.5
1025 44 1.4
1050 44 1.3
1075 44 1.3
1100 44 1.2
800 43 1.7
825 43 1.6
850 44 1.8
875 44 1.7
900 44 1.6
925 44 1.5
950 44 1.4
975 44 1.3
1000 44 1.3
775 43 1.7
800 44 1.8
825 44 1.7
850 44 1.6
875 44 1.5
900 44 1.4
925 44 1.4
950 44 1.3
750 43 1.7
775 44 1.8
800 44 1.7
825 44 1.6
850 44 1.5
875 44 1.4
900 44 1.3
925 44 1.3
725 43 1.7
750 44 1.8
775 44 1.7
800 44 1.6
825 44 1.5
850 44 1.4
875 44 1.3
900 44 1.2
675 43 1.8
700 43 1.6
725 44 1.7
750 44 1.6
775 44 1.5
800 44 1.4
825 44 1.3
850 44 1.3
Specifications subject to change without notice.
SPECIFIC GRAVITY OF NATURAL GAS
0.60 0.62
Orifice Manifold Orifice Manifold
No. Pressure No. Pressure
43 1.7 43 1.7
44 1.8 43 1.6
44 1.7 44 1.8
44 1.6 44 1.7
44 1.5 44 1.6
44 1.5 44 1.5
44 1.4 44 1.4
44 1.3 44 1.4
44 1.3 44 1.3
43 1.8 43 1.8
43 1.7 43 1.7
44 1.8 43 1.6
44 1.7 44 1.8
44 1.6 44 1.7
44 1.5 44 1.6
44 1.5 44 1.5
44 1.4 44 1.4
44 1.3 44 1.4
43 1.8 43 1.8
43 1.7 43 1.7
44 1.8 44 1.8
44 1.7 44 1.7
44 1.6 44 1.6
44 1.5 44 1.5
44 1.4 44 1.5
44 1.3 44 1.4
43 1.7 43 1.8
43 1.6 43 1.7
44 1.7 44 1.8
44 1.6 44 1.7
44 1.5 44 1.6
44 1.5 44 1.5
44 1.4 44 1.4
44 1.3 44 1.4
43 1.7 43 1.8
44 1.8 43 1.7
44 1.7 44 1.8
44 1.6 44 1.7
44 1.5 44 1.6
44 1.4 44 1.5
44 1.3 44 1.4
44 1.3 44 1.3
43 1.8 42 1.5
43 1.7 43 1.7
44 1.8 43 1.6
44 1.7 44 1.7
44 1.6 44 1.6
44 1.5 44 1.5
44 1.4 44 1.4
44 1.3 44 1.4
Gas Furnace: N9MSE
0.64
Orifice Manifold
No. Pressure
43 1.8
43 1.7
44 1.8
44 1.7
44 1.6
44 1.6
44 1.5
44 1.4
44 1.4
42 1.6
43 1.8
43 1.7
44 1.8
44 1.7
44 1.6
44 1.6
44 1.5
44 1.4
42 1.5
43 1.8
43 1.7
44 1.8
44 1.7
44 1.6
44 1.5
44 1.4
43 1.8
43 1.7
43 1.6
44 1.8
44 1.7
44 1.6
44 1.5
44 1.4
43 1.8
43 1.7
44 1.8
44 1.7
44 1.6
44 1.5
44 1.4
44 1.4
42 1.6
43 1.8
43 1.7
44 1.8
44 1.7
44 1.6
44 1.5
44 1.4
A150571
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