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W415-1540 / 08.04.15

3.1 VENTING LENGTHS AND COMPONENTS FOR DIRECT VENT

INSTALLATIONS

Use only Wolf Steel, Simpson Dura-Vent, Selkirk Direct Temp, American Metal Amerivent or Metal-Fab

venting components. Minimum and maximum vent lengths, for both horizontal and vertical installations,

and air terminal locations for either system are set out in this manual and must be adhered to. For Simpson

Dura-Vent, Selkirk Direct Temp, American Metal Amerivent and Metal-Fab follow the installation procedure

provided with the venting components.

A starter adaptor must be used with the following vent systems and may be purchased from the
corresponding supplier:

For Simpson Dura-Vent, Selkirk Direct Temp, American Metal Amerivent and Metal-Fab follow the installation
procedure found on the website for your venting supplier.

For vent systems that provide seals on the inner exhaust

ue, only the outer air intake joints must be sealed using a

red high temperature silicone (RTV). This same sealant may be used on both the inner exhaust and outer intake vent

pipe joints of all other approved vent systems except for the exhaust vent pipe connection to the appliance

ue collar

which must be sealed using the black high temperature sealant Mill Pac.

When using Wolf Steel venting components, use only approved Wolf Steel rigid /

exible components with the following

termination kits: wall terminal kit

GD422-1

GD422R-1

, or 1/12 to 7/12 pitch roof terminal kit

GD410

, 8/12 to 12/12 roof

terminal kit

GD411

at roof terminal kit

GD412

or periscope kit

GD401

(for wall penetration below grade). With

exible

venting, in conjunction with the various terminations, use either the 5 foot (1.5m) vent kit

GD420

or the 10 foot (3.1m)

vent kit

GD430

For optimum fl ame appearance and appliance performance, keep the vent length and number of elbows to a
minimum.
The air terminal must remain unobstructed at all times. Examine the air terminal at least once a year to verify
that it is unobstructed and undamaged.
Rigid and fl exible venting systems must not be combined. Different venting manufacturer components must
not be combined.

These vent kits allow for either horizontal or vertical venting of the appliance. The maximum allowable horizontal

run is 20 feet (6.1m). The maximum allowable vertical vent length is 40 feet (12.2m). The maximum number of vent

connections is two horizontally or three vertically (excluding the appliance and the air terminal connections) when

using

exible venting.

Horizontal runs may have a 0” (0mm) rise per foot/meter however for optimum performance it is recommended

that all horizontal runs have a minimum 1/4” (6.4mm) rise per foot/meter using

exible venting. For safe and proper

operation of the appliance, follow the venting instructions exactly.

A terminal shall not terminate directly above a sidewalk or paved driveway which is located between two single family

dwellings and serves both dwellings. Local codes or regulations may require different clearances.

Do not allow the inside liner to bunch up on horizontal or vertical runs and elbows. Keep it pulled tight. A 1¼”