INSTALLATION : EXHAUST FLUE INSTALLATION
ULC-S604 is another Canadian standard. It’s the “Standard for 540°C (1000°F) Factory - Built Chimneys”. It only covers safety related to gas and liquid fuel devices, not solid fuel. This type of flue cannot be used.
Fittings for UL-103HT flues come in: straight sections of various lengths, 15° offsets, 30° offsets, 45° offsets and tees. 90° fittings are not manufactured or allowed. It is also illegal to combine, for example, two 45° offsets to create a 90° bend.
GENERAL NOTES – SAFETY AND BASIC INSTALLATION GUIDLINES
DO NOT CONNECT THE GARN® WHS PRESSURIZED FLUE TO A CHIMNEY/FLUE THAT SERVES ANOTHER APPLIANCE. It is illegal to do so and could result in a fire inside the
building.
FOR HORIZONTALLY VENTED UNITED STATES UNITS USE ONLY DURATECH® DOUBLE- WALL, PACKED INSULATION UL-103 HT (US) CLASS A 2100°F STAINLESS STEEL FLUE
SECTIONS AND ACCESSORIES TO VENT THE GARN® WHS . Attempting to connect any other brand or type of flue is not safe, will void the ITS/Warnock Hersey listing, and could result in a fire or other hazardous condition.
FOR HORIZONTALLY VENTED CANADIAN UNITS USE ONLY DURATECH CANADA® DOUBLE-WALL, PACKED INSULATION ULC-S629 (Canada) CLASS A 2100°F STAINLESS
STEEL FLUE SECTIONS AND ACCESSORIES TO VENT THE GARN® WHS . Attempting to connect any other type of flue is not safe, will void the ITS/Warnock Hersey listing, and could result in a fire or other hazardous condition.
FOR VERTICALLY VENTED UNITS USE ONLY DOUBLE-WALL, PACKED INSULATION UL-103 HT (US) OR ULC-S629 (Canada) CLASS A 2100°F STAINLESS STEEL FLUE SECTIONS AND ACCESSORIES TO VENT THE GARN® WHS . Attempting to connect any other type of flue is not safe, will void the ITS/Warnock Hersey listing, and could result in a fire or other hazardous condition.
Check with your local building inspector for regulations concerning flue installations. Some areas may only allow a vertical flue and some may have minimum flue height
requirements.
• All joints, both inside and outside of the building, must be caulked with silicone caulk and sealed with self-adhesive aluminum tape. • Strictly follow the flue manufacturer’s installation instructions. A 2” clearance must be maintained around the flue. • Support all flue components to ensure structural integrity during the life of the flue. Use only non- combustible (i.e. steel, aluminum, etc) materials for such supports and generally follow the flue manufacturer’s recommendation.
GENERAL NOTES – FLUE DRAFT GARN units are power ventilated combustion appliances. As such, flue stack draft is not a consideration or variable in the combustion efficiency or emission during operation. However, a taller stack will create a larger draft during idle periods. It is recommended that all vertical GARN units have a Combustion Air Inlet Damper
GARN WHS 1000 and WHS 2000 Manual © HY-C Company LLC - September 2024
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