Intertek TASMAN EP & HP Installation And Operating Instructions Manual page 28

USE OF COUPLERS – WITH FLEX PIPE
In the event of a puncture of the vent pipe or if an extension is needed couplers may be used on both
the 4" and 7" flex vent. High temperature sealant shall be applied to the ends of the coupler and then
the coupler shall then be inserted into the flex vent. For the 4" vent 3 #8 x ½" hex head sheet metal
screws shall be used on each end of the joint to fasten the coupler to the venting. On the 7" vent a
minimum of 4 #8 x ½" hex head sheet metal screws shall be used. See Figure 7.
USE OF SEALANT
Sealant is required on vent system joints. On longer vent runs, especially vertical runs, sealant will
ensure that the combustion air enters from outdoors, and not through the vent joints. Use high
temperature sealant, available from local suppliers, on the inner pipe joint, applying the sealant
around the outside of the male part of the vent. A bead of silicone should be used on the outside of
the joint after assembly to seal the supply air. If the venting is disconnected for servicing, be sure to
follow above instructions for resealing venting when reconnecting to system.
"WARNING: A minimum clearance to combustibles must be maintained around the vent pipe of 1" on
horizontal pipe runs and 1" on vertical pipe runs.
Figure 8
Figure 7
Apply RTV high temperature
sealant around male pipe.
Page 28 of 80