Burnham CHG225 User Manual
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Figure 6.7b: Star-34 Connections
l) Cut the excess joiner band so that it lays flat in the beaded channel (Fig 6.7b).
m) Fill the inlet of the beaded channel with silicone. Smooth the silicone over the channel inlet as well as the
silicone between the female end and the stop bead of the male end (Fig 6.7b).
n) Repeat Steps (h) – (m) for the remaining Star-34 components.
p) Allow the silicone to cure per the silicone manufacturer’s instructions before operating the boiler.
5) Assembly of Z-Flex Z-Vent III:
a) General Notes:
• Non-expanded ends of SVE Series III piping sections may be cut using aviation snips or a 24 thread per inch
hacksaw. File or sand the cut end smooth before assembling. See the following instructions.
• Support horizontal piping sections at intervals of 48” or less.
• Vertical venting systems must be supported by at least one Z-Flex fire stop. An additional vertical
support is required after any offset and as required by the Z-Vent III installation instructions.
b) Start assembly of the vent system at the boiler. Remove the hose clamp shipped on the CHG vent collar.
Bend the three hose clamp tabs on this collar outward slightly.
c) Clean the exterior of the male end of the first piece of pipe and the inside of the vent collar on the boiler.
Remove dirt, grease, and moisture from the surfaces to be sealed. Dry surfaces or allow to dry thoroughly.
d) 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. Apply ¼” beads of silicone along both sides of the longitudinal seam (Fig. 6.8).
e) Insert the male end of the pipe into the boiler vent collar until it bottoms out.
f) Apply an additional bead of silicone over the outside of the joint and smooth out.
g) Replace and tighten the clamp on the vent collar.
h) The female end of each Z-Vent III component has a silicone sealing gasket. Examine all vent components
to insure that the gasket integrity has remained during shipping. Gaskets must be in the proper position or
flue gas could leak resulting in carbon monoxide poisoning.
Figure 6.7a: Star-34 Connection to Vent Collar