Water heater flueing
Continuous flow heating
There are many flueing options for continuous flow water heaters, making them very versatile appliances. Because of their compact size they take up little space within a building. These appliances are most commonly installed with a fan forced flue so normal ventilation restrictions may not be required. Check the appliance manufacturers’ specifications and flueing guide.
Direct flueing
This option is used when the water heater is mounted against an exterior wall.
Horizontal flueing
This option can be used when the water heater is mounted against an internal wall and flueing needs to extend horizontally to exit an external wall. The total flue length can be up to 9 metres long and a maximum of three 90 degree bends can be used.
Vertical flueing
Total flue length can be up to 9 metres long and a maximum of three 90 degree bends can be used. If the total flue height is more than 1.5 metres a condensate trap is required.
Combination vertical and horizontal flueing
Water heaters can be installed virtually anywhere using extension pieces (mounted vertically and horizontally), bends, adaptors and condensate traps as required.
Hot water cylinders
Internal models usually have a fan-assisted flue with the flue component located on the top of the unit for vertical venting. Room-sealed balanced flue models, with the flue component located to enable horizontal venting, are also available.
Vertical cylinder flueing
