Part 4 - General venting
Venting Rules and Guidelines
1. Prevailing Winds: Ensure the vent is located where it will not be exposed to abnormal prevailing winds.
2. Combustion Air-Intake Contamination: Air for combustion must be drawn from outdoors from an area free of
dust and contaminants. Combustion air containing chemicals such as chloride, fluoride, bromine or iodine or dust
and debris will cause corrosion damage of the heat exchanger voiding your Ecoking warranty. Refer to table 4.1 for a
list of corrosive products and contaminants sources to avoid.
3. Vertical Separation: The air inlet must always be a minimum of 305 mm (12”) plus snow allowance above any surface
that will support snow. (Two feet plus snow allowance is highly recommended). Consult your weather office, for the
maximum typical snowfall for your region. Example: New Brunswick Canada - typical maximum snowfall is 19”, thus the
inlet must be (12”+19”) = 31” above grade and exhaust must be (31”+18”) = 49” above grade.
4. Wall Flashing: Under normal operating conditions this appliance will produce a plume of white gases, and
should be taken into consideration when selecting an adequate location.
5. Flue Gas Hazard: Position the vent termination where vapors cannot make accidental contact with
people and pets or damage nearby shrubs and plants.
6. Elbow Extensions: Elbows on outside of wall must be no more than 13 mm (½”) away from the wall.
7. Vent Sloping: All indoor exhaust piping must be on a slope back to the appliance a minimum of 5 cm per mtr
(0.60 inch / feet).
8. Vent Supports: Where required Vent and Air-intake piping shall be secured to the wall for more rigidity.
All interior vent pipe shall be supported a minimum of every 915 mm (36”).
9. Roof Exhaust: In all roof applications the discharge must point away from the pitch of the roof.
10. Roof Flashing: Install adequate flashing where the pipe enters the roof, to prevent water leakage.
11. Condensate Hazard: Do not locate vent over public walkways, driveways or parking lots.
Condensate could drip and freeze resulting in a slip hazard or damage to vehicles and machinery.
12. Wall Thickness: Direct vent terminations are designed to work with any standard wall thickness.
Installation guidelines for min/max wall thickness are as follows: Min.= 25mm (1”), Max.= 1.52m (60”)
13. Venting Options: Due to potential moisture loading (build-up) along the exterior wall, sidewall
venting may not be the preferred venting option. Use a roof top venting option if possible.
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