Hearth and Home Technologies GNBC30 manual Check Venting System, Vent Height, Testing Ventilation

NOVUS B-VENT INSTALLATION INSTRUCTIONS

Figure 7

Vent Height for Vertical Termination

TABLE 1

Roof Pitch	H (Min.) Ft.
Flat to 6/12	1.0
6/12 to 7/12	1.25
Over 7/12 to 8/12	1.5
Over 8/12 to 9/12	2.0
Over 9/12 to 10/12	2.5
Over 10/12 to 11/12	3.25
Over 11/12 to 12/12	4.0
Over 12/12 to 14/12	5.0
Over 14/12 to 16/12	6.0
Over 16/12 to 18/12	7.0
Over 18/12 to 20/12	7.5
Over 20/12 to 21/12	8.0

Vent Height

5.CHECK VENTING SYSTEM

Check the venting system to assure proper operation. This can be done with a match while the appliance is operating.

Hold a lighted match at the bottom edge of the draft hood opening. If the flames and smoke remain upright, ventilation is acceptable. If the flames and smoke are drawn into the draft hood, this means ventilation is good. If the flames and smoke are forced away from the draft hood, this may indicate a ventilation blockage or down draft resulting in gas spillage into the home. If this occurs, turn off the appliance and do not burn it until it has been inspected by a qualified service person. See Figure 8.

Figure 8

Testing Ventilation

6.INSTALLING AN OUTSIDE AIR KIT (STRONGLY RECOMMENDED)

An outside air kit should be purchased as a feature with this appliance. An outside air kit helps to decrease the amount of room air taken by utilizing outside air for combustion. Figure 9 illustrates two of many possible methods that can be used to supply outside air to the appliance.

A maximum of 40’ of air kit ducting is allowed. The air kit must terminate at least one foot below the venting termination and must terminate to the outside.

Note: The outside air kit can terminate at any level with the exception that it must terminate at least one foot be- low the vent termination cap. The outside air kit inlet thimble should be positioned at least four feet above the ground level in a manner that will not allow snow, leaves, etc. to block the inlet.

WARNING!

Exhaust products of gasoline engines are hazard- ous. The outside air must not be taken from a ga- rage space, attic spaces, basements or above the roofing where other heating appliances, fans or chimneys exhaust or utilize air.

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