92-24161-82-02
SUPERSEDES 92-24161-82-01
INSTALLATION INSTRUCTIONS
FOR HIGH EFFICIENCY CONDENSING GAS FURNACES
GF901U UPFLOW SERIES
GF901D DOWNFLOW/HORIZONTAL SERIES
ISO 9001:2008
U.L. recognized fuel gas and CO (carbon monoxide) detectors are recommended in all
applications, and their installation should be in accordance with the manufacturer’s
recommendations and/or local laws, rules, regulations, or customs.
Upflow Models
Downflow/Horizontal Models
Model Number
Input (Btu)
Tons
Model Number
Input (Btu)
Tons
GF901U045AS36
45,000
3
GF901D045AS36
45,000
3
GF901U060AS36
60,000
3
GF901D060AS36
60,000
3
GF901U075AS36
75,000
3
GF901D075AS36
75,000
3
GF901U105AS60
105,000
5
GF0-1D105AS60
105,000
5
GF901U120AS60
120,000
5
GF901D120AS60
120,000
5