Ash Removal: (frequently) Remove excess ash from the combustion chamber as needed. Ash should never be allowed to cover the primary air inlet nozzle located at the lower front of the combustion chamber under the loading door. Nor should the ash slope up to the level of the bottom edge of the reaction chamber.
Expect to remove approximately 2 to 3 cubic feet of ash per full cord (4’ x 4’ x 8’) of hard wood burned. Remove ash using a small shovel through the loading door of the unit. DO NOT rake ashes forward into the lower nozzle!
Ashes should be placed in a metal container with a tight-fitting lid. Place the ash container on non-combustible surfaces only, safely away from all combustible items such as wood, cardboard boxes, paper, walls, vehicles, paints, chemicals, etc. until the ashes and container have thoroughly cooled.
Heat Exchanger/Flue Tube Cleaning: (1 per year or as necessary)
ALWAYS WEAR A DUST MASK AND EYE PROTECTION WHEN CLEANING THE HEAT EXCHANGER TUBES
Periodically inspect all flue tubes. Look for accumulated ash and debris. If one year dry, seasoned wood (15% to 20% moisture content) is burned the flue tubes and chimney may only have to be inspected every 12 to 24 months. Flue tubes will require more frequent cleaning if wet wood is burned. If inspection indicates that cleaning is required, use a stiff round wire brush coupled to standard flexible rod extenders. Correctly sized wire brushes ( 2”, 3.5”, 4” and 5” diameter) and flexible rod extenders are available at the GARN Store. The flue tubes are accessed through the secondary reaction chamber, the lower two cleanout ports, the upper cleanout port, and the blower housing. On vertical flue units, the rear cleanout should also be cleaned. Cleaning of the small sections of tubing that are hard to reach is generally not necessary.
Replace all damaged gaskets and install missing gaskets with new gaskets manufactured specifically for GARN® WHS equipment obtained from your GARN® dealer or online at www.garn.com.
DO NOT INSTALL CLEANOUT COVERS WITHOUT GASKETS OR WITH DAMAGED GASKETS. Omitted or damaged gaskets may result in carbon monoxide release and/or fire hazards.
Chimney Cleaning: (1 per year or as necessary) GARN® units may be installed with either a short horizontal flue or a more traditional a vertical flue. Both require periodic inspection and cleaning. Use a correctly sized wire brush coupled to flexible rod extenders. Be careful not to damage the inside surface of the flue. An insulated, double-wall UL-103 HT (US) or ULC-S629 (Canada) Class a 2100°F stainless steel tee is required at the base of an external vertical chimney. This tee is supported by a tee bracket hung from the exterior wall of a building. The chimney tee may be cleaned by removing the insulated bottom access cover that is supplied with the tee. Be sure to reinstall the cover before firing the unit.
CALL A LICENSED CHIMNEY SWEEP IF CLEANING FROM THE TOP OF A VERTICAL CHIMNEY IS REQUIRED. Cleaning from the top of a chimney can be extremely dangerous.
GARN WHS 1000 and WHS 2000 Manual © HY-C Company LLC - September 2024
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