Installation Guide

Horizontal Installation Requirements:

1. The horizontal vent connector must slope upward toward the termination at least 1/4 inch per

foot and be installed so that all condensate runs back toward the appliance and is not retained in

any part of the venting system. EXCEPTION: If the system is connected to positive pressure

(Category III or IV) appliances only, terminates with a horizontal termination, and has no provision

for draining condensation and/or rain water; then the vent must pitch downward toward the

termination. This pitch must also be at least 1/4 inch per foot (2 degrees).

2. Seal weather exposed joints of the outer jacket with foil tape or an exterior grade

silicone sealant.

3. The vent system must terminate with one of the Saf-T Vent terminations or other terminations

as specified or provided by the appliance manufacturer, or approved mechanical vent devices.

4 The Termination Location:

(a) The vent must terminate at least 3 feet above any forced air inlet located within 10 feet.

(b) The vent must terminate at least 4 feet below, 4 feet horizontally from or 1 foot above AND

2 feet horizontally from any door, window or gravity air inlet into any building. Exception: Direct

Vent appliances may be listed for alternate spacing.

snow accumulates, at least 12 inches above the anticipated snow line.

(d) Through-the-wall vents for Category II and IV appliances and noncategorized condensing

appliances must not terminate over a public walkway or an area where condensate or vapors

could create a nuisance or hazard or could be detrimental to the operation of regulators, relief

valves or other equipment. In colder climates where ice buildup is likely to occur, Heat-fab, Inc.

will NOT be held liable for any personal injury or property damage due to any formation of ice.

(e) The vent termination must be at least 8 feet horizontally from any combustion air intake,

located above it.

5. Horizontal supports are required for every 6 feet of horizontal run and after every transition

from vertical to horizontal.

6. The total continuous

distance of the vent system

from the appliance flue

collar to the termination

must 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

may be required.