Harman Stove Company R16 manual Venting, Avoiding Smoke and Odors, Outside Air

Venting

Fig. 7

Outside air flex pipe goes here.

Flex pipe part#

1-00-08543 (25')

Inlet Cover part# 1-10-08542

Avoiding Smoke and Odors

Negative Pressure, Shut-down, and Power Failure: To reduce the probability of back-drafting or burn-back in the pellet burning appliance during power failure or shut-down conditions, the stove must be able to draft naturally without exhaust blower operation. Negative pressure in the house will resist this natural draft if not accounted for in the pellet appliance

installation.

Heat rises in the house and leaks out at upper levels. This air must be replaced with cold air from outdoors, which flows into lower levels of the house. Vents and chimneys into basements and lower levels of the house can become the conduit for air supply, and reverse under these conditions.

Outside Air:

Harman Home Heating and Hearth & Home Technologies strongly recommend attaching outside air in all installations, especially lower level and main floor locations.

Adjustable from 4 1/2" to 10 5/8" wall thickness

Outdoor Half

Indoor Half

Fig. 8

Direct Vent Wall Passthrough

The Harman Direct Vent Wall Passthrough (Part

#1-00-677077) makes installing your Harman Pellet Stove with outside air easier. It combines the needed wall protection for the venting, with a source of intake air for combustion. It is made to fit walls from 4 1/2" to 10 1/8" thick with a single square opening in the wall of 6-1/2 inches.

Canadian Standard, ULC-S627-00 Requires that all out- door-aired appliances must be secured to the structure.

Per national building codes, consideration must be given to combustion air supply to all combustion appliances. Failure to supply adequate combustion air for all appliance demands, may lead to back-drafting of those and other appliances.

When the appliance is side-wall vented: The air intake is best located on the same exterior wall as the exhaust vent outlet and located lower on the wall than the exhaust vent outlet.

When the appliance is roof vented: The air intake is best located on the exterior wall oriented towards the prevailing wind direction during the heating season.

The outside air connection will supply the demands of the pellet appliance, but consideration must be given to the total house demand. House demand may consume some air needed for the stove, especially during a power failure. It may be necessary to add additional ventilation to the space in which the pellet appliance is located. Consult with your local HVAC professional to determine the ventilation demands for your house.

To install outside air use 2 3/8" I.D. non-combustible flex pipe. There is a break-away hole on the rear panel of the stove which must be removed to connect the flex pipe. The maximum length run of this pipe is 15 feet. If a longer run is needed the size must be increased to 3". Inlet cover part number 1-10-08542 should be used to keep birds, rodents, etc.out of the pipe unless the Harman wall passthrough is being used.

10XXV Pellet Stove