INSTALLATION : EXHAUST FLUE INSTALLATION
FLUE GAS DISCHARGE CLEARANCES
As with any wood heating device, sparks may be occasionally expelled from the flue of GARN® WHS equipment; therefore it is important to comply with the following requirements. Flue gas discharge clearances are defined in NFPA 211 as well as national and state codes:
• Flue gas shal l be discharged a minimum of 36” above grade.
A horizontal flue shall NOT be used and flue gas should NOT be discharged horizontally:
• Within 20 ’ of any air inlet into any building or structure (except for the GARN® WHS combustion air inlet). • Within 20 ’ horizontally of any door, window, inside corner or gravity air inlet into any building or structure. • If a window, door or air inlet is located above the horizontal flue. • Less than 8 ’ above grade when located adjacent to public walkways. • Into a confined space between two buildings or structures. • Into an area that naturally collects leaf, paper or other air borne debris that is combustible. • Onto a parking lot or into an area where vehicles may park. • Closer than 24 ” from building siding when the discharge is aimed away from the building. • When the siding is wood, vinyl, or any combustible material. • When soffit is vented and/or constructed of combustible material. • Into the wind as sparks may blow back against the building during higher wind conditions. Always locate the horizontal flue so that exhaust gases move away from the building in the downwind direction during the heating season.
Flue gas shall NOT be discharged vertically:
• Less than 2 ’ above any building component within a 10 ’ radius of the flue. The vertical flue must extend at least 3 ’ above the roof surface where it penetrates the roof. • From a building with wood shingles, cedar shakes, or other combustible roofing materials due to fire hazard. • If the chimney is under a tree due to fire potential. • Where flue exhaust gases may enter an upper story window or door.
FAILURE TO FOLLOW THE ABOVE INSTALLATION DIRECTIONS WILL CAUSE REDUCED UNIT PERFORMANCE AND A FIRE OR OTHER HAZARDOUS CONDITION MAY RESULT.
GARN WHS 1000 and WHS 2000 Manual © HY-C Company LLC - September 2024
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