FULTON PHW 1000, Installation, Operation And Maintenance Manual

Page: 44 / 94

Fulton Heating Solutions, Inc. -- PHW Manual -- 2010-0713
Page 44
23. Vertical Vent Flashing and Installation
a) The roof opening should be located and sized such that the vent is vertical and has the
required air space clearance. The roof flashing is positioned with the lower portion of the
base flange over roofing material. Figure 11.
b) Nail through the upper portion and sides of the base flange. Use nail with neoprene
washers or cover the nail heads with a neoprene plastic. Finish roofing around the
flashing, covering the sides and upper flange with roofing material.
24. Vertical Vent Termination
a) The vent pipe must extend through the flashing to a height above the roof as required in
Figure 12. A storm collar is installed on the vent pipe over the opening between pipe and
flashing.
b) Adhesive material is used over the joint between the vent pipe and the storm collar.
Figure 12. The vent termination is joined to the end of the vent pipe.
c) Termination height for the vent pipe must be such that no discharge opening is less than
2 feet horizontally from the roof surface, and the lowest discharge opening shall be no
lower than the minimum height specified in Fig. 12. These minimum heights may be used
provided the vent is not less than 8 feet from any vertical wall.
Figure 12