EZ-Fit External Flues (Green System) for outdoor boilers

EZ-Fit External Flues (Green System) for outdoor boilers

The Green Flue System can be installed with external Grant boilers when fitted with the relevant starter connectors and elbows. This allows for the extension of an outdoor module’s flue system to be redirected, either vertically or horizontally, to reduce nuisance pluming.

Features & benefits

Grant’s Green Flue System comprises of black painted high level and vertical flue components for external installation. Compatible with all of Grant’s Vortex and VortexBlue oil boilers, the Green System is modular and supplied in sections which allow for greater flexibility when it comes to installation.

All of Grant’s external oil boilers are supplied with a low-level flue as standard, however, the Green Flue System can either extend this horizontally or convert it to a high level/vertical system. With external boilers, a horizontal or vertical starter section is fitted, then extensions, elbows and a terminal are used to build the desired flue configuration.

Both the horizontal and vertical starter sections, like the other components in the Green Flue System, are manufactured from high grade stainless steel and are both also fully insulated and have ‘O’ ring seals and locking bands to ensure a rigid construction every time.

To read more about how the Green Flue System can be installed with Grant’s internal boilers, please click here.

  • Suitable for Grant Vortex & VortexBlue external boilers up to 70kW
  • Maximum vertical flue length = 8 metres
  • Maximum horizontal flue length = 4 metres
  • Supplied in modular form enabling most installations to be accommodated
  • Starter connections available for external boiler modules
  • Double skin extensions available in 150mm, 250mm, 450mm or 950mm fixed lengths and a 195-270mm adjustable length
  • Possible to create offsets in straight flue runs by using our 45° elbows and extensions
  • Suitable for floor standing and wall hung modules

Configure your flue

We have a wide range of options available when it comes to flue systems, here's a helpful hand to put the right flue with the right boiler.

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