Haier GE APPLIANCES NF96US Service Manual page 49

Proper Combustion
Furnace should operate minimum 15 minutes with correct
manifold pressure and gas flow rate before checking
combustion. Take combustion sample beyond the flue
outlet and compare to Table 14.
Capacity CO
All
The maximum carbon monoxide reading should not exceed
100 ppm.
Table 14.
Capacity Gas
Natural
All Sizes
LP /
Propane
NOTE: A natural to LP propane gas changeover kit is necessary to convert this unit. Refer to the changeover kit installation
instruction for the conversion procedure.
Capacity
045
070
090
110
Pressure switch is factory set. No adjustment necessary. All models use the factory-installed pressure switch from 0-4500 feet (0-
1370 m).
Capacity
045
070
090
110
Pressure switch is factory set. No adjustment necessary. All models use the factory-installed pressure switch from 0-4500 feet (0-
1371 m).
31-5000728 Rev. 0
% for Nat CO % for L.P.
2 2
7.5 - 8.5 8.2 - 9.5
Manifold Pressure in. w.g.
0-4500 ft. 4501-5500 ft.
3.5 3.3
10.0 9.4
Table 15. Manifold and Supply Line Pressure 0-10,000 ft.
0-7,500 ft
(0-2,286m)
Natural to LP/Propane
11K50+
Table 16. Burner Orifice Conversion Kits at Varying Altitudes
0 - 4500 ft
(0 - 1,371m)
No Change
No Change
No Change
No Change
Table 17. Pressure Switch Requirements at Varying Altitudes
High Altitude
NOTE: In
Canada,
elevations over 4500 feet (1372 m) is the jurisdiction of
local authorities.
Some units installed at altitude of 4501 - 10,000 feet
(1373 to 3048 m) may require a pressure switch change
which can be ordered separately and a manifold de-rate.
See Table 15 for manifold pressures at all altitudes. Table
16 lists conversion kit and Table 17 lists pressure switch
requirements at varying altitudes.
The combustion air pressure switch is factory-set and
requires no adjustment.
5501-6500 ft. 6501-7500 ft.
3.2 3.1
9.1 8.9
High Altitude Natural Burner
Orifice Kit
51W01
4501 - 7500 ft
(1371 - 2286m)
11U66
11U70
11U70
11U70
Page 49
certification for
Supply Line Pressure
7501-10000 ft. 0-10,000 ft.
3.5 4.5
10.0 11.0
7,501 - 10,000 ft
(2,286 - 3,048 m)
High Altitude LP/Propane
Burner Orifice Kit
11K45+
7501 - 10000 ft
(2286 - 3048m)
11U69
11U68
11U64
11U64
installations at
in. w.g.
13.0
13.0