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3.3.4.3 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 a sealing
product, available from your local Drolet dealer, 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.
“WARNING: A minimum clearance to combustibles must be maintained around the vent pipe of 2” on
horizontal pipe runs and 1” on vertical pipe runs.
Apply RTV high temperature sealant around male
pipe.
Figure 6