High Altitude - Haier GE NF80XV Series Service Manual

Proper Gas Flow (Approximate)
Furnace should operate at least 5 minutes before checking
gas flow. Determine time in seconds for two revolutions of
gas through the meter. (Two revolutions assures a more
accurate time.) Divide by two and compare to time in
Table 18 below.
NOTE: To obtain accurate reading, shut off all other gas
appliances connected to meter.
Seconds for One Revolution
Unit
1 cu ft Dial
060
080
100
Natural-1000 btu/cu ft
Table 18. Gas Meter Clocking Chart
Natural
2 cu ft Dial
60 120
45 90
36 72

High Altitude

Units may be installed at altitudes up to 7,500 ft. above
sea level. See Table 17 for de-rate manifold values. 60K
natural gas units installed at altitude of 4,501 - 7,500 feet
require a pressure switch change, which can be ordered
separately. Table 19 lists pressure switch requirements at
high altitude.
The combustion air pressure switch is factory-set and
requires no adjustment.
Unit
060
080
100
Page 30
High Altitude Pressure Switch
(4,501 - 7,500 ft)
Natural
20K91
No Change
No Change
Table 19.
31-5000734 Rev. 0