Goodman GMV950453BX Series Technical Information Manual page 5

PRODUCT DESIGN
High Altitude Derate
When this furnace is installed at high altitude, the appropriate High Altitude orifice kit must be installed. This is required due
to the natural reduction in the density of both the gas fuel and combustion air as altitude increases. The kit will provide the
proper design certified input rate within the specified altitude range.
Furnace
GMV950453BX*
GMV950704CX*
GMV950905DX*
GMV951155DX*
GCV90704CX*
GCV90905DX*
GCV91155DX*
High altitude kits are purchased according to the installation altitude and usage of either natural or propane gas. Refer to the
chart above for a tabular listing of appropriate altitude ranges and corresponding manufacturer's high altitude Natural Gas and
Propane Gas kits. For a tabular listing of appropriate altitude ranges and corresponding manufacturer's High Altitude Pressure
"STANDARD" and "HIGH ALTITUDE" KITS
0 - 7,000 Feet
(Standard Altitude)
Gas Orifices
ID Blwr
Pressure
Switch
Natural Propane
No LPM-05* No
Change #55 Orifice Change
No LPM-05* No
Change #55 Orifice Change
No LPM-05* No
Change #55 Orifice Change
7,001 - 9,000 Feet
Gas Orifices
ID Blwr
Pressure
Switch
Natural Propane
HANG13
HALP11
#44 HAPS28
#56 Orifice
Orifice
HANG13 HALP11
#44 #56 HAPS29
Orifice Orifice
HANG13 HALP11
#44 #56 HAPS29
Orifice Orifice
9,001 - 11,000 Feet
Gas Orifices
ID Blwr
Pressure
Switch
Natural Propane
HANG14 HALP11
#45 #56 HAPS28
Orifice Orifice
HANG14 HALP11
#45 #56 HAPS29
Orifice Orifice
HANG14 HALP11
#45 #56 HAPS31
Orifice Orifice
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