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Select an Appropriate Location
The gas fire flue should be installed in a well-ventilated, dry area, away from flammable materials. Suitable locations include living rooms or other open areas. Avoid installing the flue in enclosed spaces such as bedrooms, bathrooms, or inside cabinets. The installation site should also allow convenient access for future maintenance and inspection.
Plan the Flue Routing in Advance
Determine the flue path ahead of time to avoid interference with other building services like water pipes or electrical wiring. Ensure the route supports smooth installation and efficient exhaust. Avoid placing the flue in sealed ceiling cavities or other enclosed environments that could hinder maintenance access.
Use the Manufacturer's Designated Flue Components
Only use the gas fire flue components supplied by the manufacturer, including standard and extended sections. Do not modify or replace parts with unauthorized alternatives. The flue material should be corrosion-resistant, such as stainless steel or aluminum alloy.
Maintain the Proper Slope
Install the gas fire flue with a downward slope of 2–3° towards the outside to prevent rainwater and condensation from entering the appliance. For condensing models, the flue should slope upward by 1–3° to allow condensation to return to the unit for proper drainage.
Ensure Airtight Sealing
All joints in the gas fire flue must be sealed tightly. Overlap each connection by at least 30 mm and apply aluminum foil tape to prevent air leakage and flue dislodgement, ensuring reliable, leak-proof operation.
Create Proper Wall Openings
The opening for the gas fire flue in the wall should be 10 mm larger than the flue's outer diameter, and should be positioned horizontally or vertically. The external end of the flue should be at least 200 mm away from adjacent building surfaces.
Avoid Flue Terminals in Wind Vortex Zones
Do not place the gas fire flue outlet in areas prone to swirling winds, which can cause backdraft. To prevent cold air from reversing into the system, install a mechanical backdraft damper at the flue outlet.
Conduct a Leak Test
After installation, perform a gas leak test on the entire gas fire flue system. Apply soapy water to the joints and check for bubbles, which would indicate a gas leak. Any leaks must be repaired immediately.
Install Wind and Rain Shields
Attach a wind and rain guard at the gas fire flue outlet to prevent wind and water from entering the system, which could affect performance. The shield must be securely fastened and should not obstruct the exhaust flow.
Schedule Regular Inspections and Maintenance
Inspect the gas fire flue periodically to ensure it remains sealed, unblocked, and in good condition. If there are signs of damage, corrosion, or blockages, repair or replace affected components promptly to ensure safe and efficient operation.
