6
VENTING
VENTING LENGTHS AND AIR TERMINAL
LOCATIONS
For safe and proper operation of the fireplace follow the venting instructions exactly.
Deviation from the minimum vertical vent length can create diffi culty in burner
Provide a means for visually checking the vent connection to the fi replace after the fi replace is installed.
Vent lengths that pass through unheated spaces (attics, garages, crawl spaces) should be insulated with the insulation wrapped in a protective sleeve to minimize condensation.
When using Wolf Steel Ltd.venting components, use only approved Wolf Steel Ltd. fl exible vent components with the following termina- tion kits: WALL TERMINAL KIT GD622, or 1/12 TO 7/12 PITCH ROOF TERMINAL KIT GD610, 8/12 TO 12/12 ROOF TERMINAL KIT GD611, FLAT ROOF TERMINAL KIT GD612. With flexible venting, in conjunction with the various terminations, use either the 5 foot vent kit GD620 or the 10 foot vent kit GD630. These vent kits allow for either horizontal or vertical venting of the fi replace.
The maximum allowable vertical vent length is 40 feet. The maximum number of allowable 8” vent connections is three hori- zontally or vertically (excluding the fi replace and the air terminal connections).
For optimum flame 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.
When venting, the horizontal run must be kept to a maximum of 20 feet. If a 20 foot horizontal run is required, the fireplace must have a minimum vertical rise immediately off the fire- place of 57“. When terminating vertically, the vertical rise is a minimum 3 feet and a maximum 40 feet above the fireplace. FIGURES
FIGURE 3a
24” MAXIMUM
131/2”
MINIMUM
71 3/4”
MINIMUM
PLUS RISE*
16”
MINIMUM
*
3FEET MINIMUM
FIGURE 3b
40FEET MAXIMUM
*For optimum performance, it is recommended that all hori- zontal runs have a minimum ¼“ rise per foot.
Provide a means for visually checking the vent connection to the fireplace after the fireplace 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” air gap between the inner and outer liner all around is required for safe operation. Use a firestop when penetrating interior walls, floor or ceil- ing.
For safe and proper operation of the fireplace follow the venting instruction exactly.
If vertical rises greater than 57“ are necessary, the increased rise must be deducted from the horizontal run.
HORIZONTAL VENT SECTIONS: A minimum clearance of 2” all around the vent pipe on all horizontal runs to combustibles is required except for clearances in fi replace enclosures**. Use fi restop spacer assembly
VERTICAL VENT SECTIONS: A minimum of 1” all around the vent pipe on all vertical runs to combustibles is required except for clear- ances in fi replace enclosures**. Use fi restop spacer
**Horizontal and vertical sections require 5” and 9” clearance from combustibles, respectively. See minimum enclosure clearances section.
