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5) Assembly of Heat Fab Saf-T Vent EZ Seal:
a) Saf-T Vent General Notes:
• These instructions cover the installation of Saf-T Vent EZ Seal. Saf-T Vent EZ Seal piping has integral gaskets
installed in the female ends of the pipe which seal the joints.
• In general, Saf-T Vent pipe sections may not be cut. Exceptions to this are the Saf-T Vent slip connector and
connections to the boiler vent collar.In these cases, use a sharp pair of aviation snips, an abrasive cut-off, or a
plasma cutter. See the Saf-T Vent instructions for information on cutting the slip connector.
• Orient Saf-T Vent components so that the arrows on the piping labels are in the direction of fl ue gas fl ow.
• Support horizontal piping sections at intervals of 6 feet or less.
• Vertical venting systems must be supported by at least one Heat Fab support. An additional vertical support is
required after any offset.
b) Connection to Boiler – Start assembly of the vent system at the boiler. Remove the hose clamp shipped on the FCM
vent collar. Bend the three hose clamp tabs on this collar outward slightly. Cut the “male spigot” off of the fi rst piece
of pipe (Fig 7.19). If necessary, crimp the cut end of the pipe so that it can be inserted at least 1” into the collar. Clean
the exterior of the male end of the fi rst piece of pipe and the inside of the vent collar on the boiler with an alcohol
pad. On the male end of the pipe, apply a ¼” wide bead of high temperature silicone approximately ½ inch from the
male end of the pipe. Also apply a ¼” bead of silicone along the fi rst 2 ½” of the longitudinal weld. Insert the male
end of the pipe into the boiler vent collar until it bottoms out. Apply an additional bead of silicone over the outside of
the joint and smooth out (Fig 7.19). Replace and tighten the clamp on the vent collar.
c) Assembly of Saf-T Vent EZ Seal Vent Components - Clean the male end of the next piece of pipe with an alcohol pad
and make sure that it is free of burrs. Check the female end of the fi rst piece of pipe to make sure that the gasket is in
place and is undamaged. Using a slight twisting motion, insert the male end of the second fi tting into the female end
of the fi rst fi tting, taking care not to dislodge or cut the factory gasket. In extremely arid conditions, it may be easier
to assemble these fi ttings if the gasket is moistened with water prior to assembly. Bend the locking tabs over the
locking ring on the adjacent piece of pipe. Repeat these steps for the remaining Saf-T-Vent components.
Figure 7.19: SAF-T Vent EZ Seal Connection to Vent Collar