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Vent System Assembly
1) General Assembly Notes:
a) Where the use of “silicone” is called for in the following instructions, use only the following sealants:
• Flex-L-International Star-34 – GE RTV106 or GE IS806
• Z-FLEX SVE Series III (“Z-Vent III”) – Silicone not required for joints between pipe sections.
• Heat Fab Saf-T Vent – GE RTV 106
• ProTech Systems FasNSeal - Silicone not required for joints between pipe sections.
• Use the same silicone used to seal vent pipe sections to seal the boiler vent collar and the Tjurnlund VH-1 terminal (if
used). For ProTech FasNSeal or Z-Flex Z-Vent III, use GE RTV 106 for the vent collar and Tjurnlund terminal.
b) Longitudinal welded seams should not be placed at the bottom of horizontal sections of vent pipe.
c) Do not drill holes in vent pipe.
d) Do not attempt to mix vent components of different vent system manufacturers.
2) Vent Collar Installation – The vent collar is shipped loose in the accessory bag along with two collar gaskets, the outlet
orifice, and four 10-32 mounting screws. Verify that the model number marked on the outlet exhaust orifice matches that
of the boiler being installed. Mount the collar and orifice as shown in Figure 15. If desired, the first piece of exhaust pipe
can be connected to the collar before mounting the collar on the boiler.
3) Tjernlund VH-1 terminal Installation – If the Tjernlund VH-1 terminal is used, follow the instructions provided with the
terminal to mount it in the wall. This terminal may be installed in direct contact with combustible construction.