Install Instructions

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IMPORTANT:
It is advisable to periodically check this loop during the operating months to make certain that that it is free flowing and
filled with water. This will ensure the flow of condensate and…
a) Prevent the exhaust gases venting through the drain fitting in a positive pressure vent system (Category III / IV).
b) Prevent the suction of mechanical room air through the drain fitting in a negative pressure system (Category II).
Z-flex recommends that a condensate drain of suitable configuration be installed in the venting system
so that any condensate produced in the vent system is allowed to drain from the vent system before
collecting in the appliance.
Local regulations may require the use of a neutralizer kit when using a condensate trap. A condensate pump
may be required. Contact your heating appliance manufacturer or local distributor if required.
Image 15 Image 16
Support Systems:
It is recommended to support the venting system with suitable supports every 48 inches or less of horizontal vent run and at the
point of every elbow. Vertical vent runs shall be supported at the base and every 16ft or less of vertical height with a support collar.
It is recommended to use strapping made of similar material to the vent pipe (stainless steel) in order to minimize
galvanic reaction, thereby preventing accelerated corrosion of the support systems (see Illustration 2)
NOTICE
NOTICE
Drain Assembly with p-Trap
(Double Wall Pipe shown)
NOTICE