P/N 42-9540 11/12 Copyright 2012 Hydrotherm
Page 3
KN INSTALLATION INSTRUCTIONS FOR VENT AND AIR PIPING
3 Vent & air piped through the roof
(separate vent and air terminations)
KN-2
Vent components
Heat-Fab
KN-4
Vent components
Heat-Fab
Vent piping/components
(incl. supports, thimbles, etc.)
EZ-Seal
3-inch
Vent piping/components
(incl. supports, thimbles, etc.)
EZ-Seal
4-inch
Rain cap vent termination
5300CI
Rain cap vent termination
5400CI
Joint sealant, required
GE RTV106 or equivalent
Joint sealant, required
GE RTV106 or equivalent
Air components
Heat-Fab
Air components
Heat-Fab
Rain cap termination
Termination pipe section
(3 ft)*
5300CI
9307
Rain cap termination
Termination pipe section
(3 ft)*
5400CI
9407
*Note: Standard air piping termination pipe section is 3 feet. A longer
length can be used if needed.
*Note: Standard air piping termination pipe section is 3 feet. A longer
length can be used if needed.
Air piping/components
(incl. supports, thimbles, etc.)
3-inch PVC, CPVC, ABS,
galvanized or aluminum
Air piping/components
(incl. supports, thimbles, etc.)
4-inch PVC, CPVC, ABS,
galvanized or aluminum
1 Vent piped through the roof
(combustion air from the boiler room)
KN-2
Vent components
Heat-Fab
KN-4
Vent components
Heat-Fab
Vent piping/components
(incl. supports, thimbles, etc.)
EZ-Seal
3-inch
Vent piping/components
(incl. supports, thimbles, etc.)
EZ-Seal
4-inch
Rain cap vent termination
5300CI
Rain cap vent termination
5400CI
Joint sealant, required
GE RTV106 or equivalent
Joint sealant, required
GE RTV106 or equivalent
See pages 5 – 6
2 Vent piped through the roof
(air piped through side wall)
KN-2
Vent components
Heat-Fab
KN-4
Vent components
Heat-Fab
Vent piping/components
(incl. supports, thimbles, etc.)
EZ-Seal
3-inch
Vent piping/components
(incl. supports, thimbles, etc.)
EZ-Seal
4-inch
Rain cap vent termination
5300CI
Rain cap vent termination
5400CI
Joint sealant, required
GE RTV106 or equivalent
Joint sealant, required
GE RTV106 or equivalent
Air components
Heat-Fab
Air components
Heat-Fab
Termination elbow
Termination pipe section
(1 ft)
Termination thimble
Gear clamp (nose clamp)
9314TERM
9302
9393S
3-inch clamp
Termination elbow
Termination pipe section
(1 ft)
Termination thimble
Gear clamp (nose clamp)
9414TERM
9402
9493S
4-inch clamp
Air piping/components
(also supports, thimbles, etc.)
3-inch PVC, CPVC, ABS,
galvanized or aluminum
Air piping/components
(also supports, thimbles, etc.)
4-inch PVC, CPVC, ABS,
galvanized or aluminum
See pages 7 – 10
See pages 11 – 14
The Hydrotherm
KN
boiler — Vent and air piping options
