W415-1068 / B / 01.02.14
10
EN
3.1 VENTING LENGTHS AND COMPONENTS FOR DIRECT VENT INSTALLATIONS
For vent systems that provide seals on the inner exhaust
fl
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
fi
replace
fl
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
fl
exible components with the
following termination kits: wall terminal kit
GD622R
, or 1/12 to 7/12 pitch roof terminal kit
GD610
, 8/12 to 12/12
roof terminal kit
GD611
or
fl
at roof terminal kit
GD612
. With
fl
exible venting, in conjunction with the various
terminations, use either the 5 foot (1.5m) vent kit
GD620
or the 10 foot (3m) vent kit
GD630
.
For optimum fl ame appearance and fi replace 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.
The minimum allowable vertical vent length is 3 feet (0.9m) maximum allowable vertical vent length is 40 feet
(12m). The maximum number of allowable 8” (203mm) vent connections is three horizontally or vertically
(excluding the
fi
replace and the air terminal connections).
When venting, the horizontal run must be kept to a minimum of 36” (914mm) or a maximum of 20 feet (6m).
If a 20 foot (6m) horizontal run is required, the
fi
replace must have a minimum vertical rise immediately off
the
fi
replace of 57” (1448mm). When terminating vertically, the vertical rise is a minimum 36” (914mm) and a
maximum 40 feet (12m) above the
fi
replace.
For optimum performance, it is recommended that all horizontal runs have a minimum 1/4” (6mm) rise
per foot/meter. Provide a means for visually checking the vent connection to the fi replace after the
fi replace is installed. Do not allow the inside liner to bunch up on horizontal or vertical runs and elbows.
Keep it pulled tight. A 3/4” (19mm) air gap between the inner and outer liner all around is required for safe
operation. Use a fi restop when penetrating interior walls, fl oor or ceiling.
8.4A
