Field Controls 46334200 Instruction Sheet page 3

For Furnace Models GBI, GCI, GHI, GSI, and GUI
BTU/Hr. Diameter of
Flue Collar
on Furnace
45,000
70,000
90,000
115,000
140,000
For Furnace Models GMI
BTU/Hr. Diameter of
Flue Collar
on Furnace
40,000
60,000
80,000
100,000
120,000
140,000
General Wiring
For complete installation information refer to the Field Controls SWG-4AM Power Venter Installation
Manual for details (P/N 46333300.)
Installer
Provided Flue
Pipe Transition
Size Diameters
3" 3" to 4"
3" 3" to 4"
3" 3" to 4"
4" None
4" None
Installer
Provided Flue
Pipe Transition
Size Diameters
3" 3" to 4"
4" None
4" None
4" None
4" None
4" None
Maximum
Equivalent Length
(ft.) for 4" Vent Pipe
100
100
100
85
65
Maximum
Equivalent Length
(ft.) for 4" Vent Pipe
100
100
100
100
80
60
Page 3
Maximum
Equivalent Length
(ft.) for 5" Vent Pipe
100
100
100
95
80
Maximum
Equivalent Length
(ft.) for 5" Vent Pipe
100
100
100
100
90
80