Install Instructions
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107750-01 - 9/17
VII. Venting
I. Assembly of Stainless Steel Vent Systems (continued)
d. When exible stainless steel pipe is used for combustion product venting, it must be installed at vertical or near vertical
orientation. This will insure proper condensate ow back towards the boiler.
e. Follow exible stainless steel pipe manufacturer specic instructions regarding application/listing, permits, minimum
clearances to combustibles, installation details (proper joint assembly, pipe support and routing, gasket and tting
installation, optional tooling availability/usage, routing through masonry combustion of combustion product venting and
combustion air supply).
f. When there is a conict between exible stainless steel pipe manufacturer installation instructions and Boiler Installation,
Operating and Service Instructions, the more restrictive instructions shall govern.
WARNING
Asphyxiation Hazard. Flexible stainless steel vent must be installed only in an UNUSED chimney ue. A
chimney ue is considered UNUSED when it is not being used for any appliance venting. If chimney is
a multiple ue type where one of the multiple ues is being used for an appliance venting, the exible
stainless vent installation is permitted through an adjacent, unused ue providing a local authority having
jurisdiction approves such installation.
Asphyxiation Hazard. Flexible stainless steel pipe must be installed at vertical or near vertical plane when
used for combustion product venting. Failure to do so will result in improper condensate drainage towards
the boiler and possible subsequent vent pipe blockage.