Installation Guide

6
1. Seal weather exposed joints of the outer jacket with foil
tape or an exterior grade silicone sealant.
2. The vent system must terminate at least 3 feet above the roof
line and at least 2 feet higher than any portion of the building
within 10 feet.
3. When terminated at a height of more than 6 feet the stack
must be supported by a support bracing. The vent should be
supported every 10 feet.
4. The vent system must terminate with one of the
Saf-T Vent Terminations;
exceptions:
(a) Category I or II appliances (natural draft) must use a
Saf-T Vent Rain Cap.
(b) Vent systems without provisions for draining rain water must
use a Saf-T Vent Rain Cap.
(c) Terminations or approved mechanical vent devices specified
or provided by the appliance manufacturer are permitted.
5. The total continuous distance of the vent system from the
appliance flue collar to the termination shall not exceed that
specified in the appliance manufacturer’s installation instructions.
When venting natural draft appliances the termination must be at
least 5 feet above the topmost draft hood. Otherwise a Listed
mechanical draft inducing device is required.
6. In cold climates do not install a condensate drain on the
exterior of the building. Doing so may result in dangerous icy
conditions on surfaces near the drain and may cause damage to
the vent system and/or the building exterior. Heat-fab, Inc. will
NOT be held liable for any personal injury or property damage
due to any formation of ice.
7. Install supports every 10 feet vertically along the vent pipe
route. Vertical supports are required after every transition to
vertical and are required after every offset elbow. When the vent
is free standing and penetrates a roof/ceiling another means of
support must be used at a second location. Refer to the Vertical
Supports section in this manual.
Vertical Installation Requirements:
Typical Vertical
Installation