Special Requirements for Vertical Balanced Flue
POSITION SPACING MIN
J From a surface or boundary line facing a terminal 600mm
K From a terminal facing a terminal 600mm
R From adjacent wall to flue 300mm
S From an adjacent opening window 1000mm
T Adjacent to windows or openings on pitched roofs 600mm
U Below windows or openings on pitched roofs 2000mm
Fitting the Roof Terminal to the Flashing:
Ensure the roof terminal collar is correctly seated onto the
flashing spigot to prevent leakage.
FITTING THE ROOF TERMINAL
Flashing
Spigot
Collar
Collar
Flashing
Spigot
Roof Terminal
Adaptor
Flue Terminal
Ø 80 Air Duct
Ø Exhaust Flue Duct
(part of Flue Terminal)
x
y
It is necessary to cut the flue terminal
air duct by 170mm. Dimensions x & y
must be 60mm.
For Roof Terminals
1. In the case of a pitched roof 25 - 50 degrees, position the lead
tile to replace/flash over existing roof tiling. Make an aperture in the
roof suitable for the lower tube of the roof terminal and ensure the
integrity of the roof cover is maintained. The adjustable plastic collar
can either be positioned on the lead tile or the lower tube of the
roof terminal prior to the final positioning of the vertical flue
through the tile. Check the collar is correctly located to suit
required roof pitch (either 25° to 38° or 37° to 50°). From inside
the roof adjust the flue to a vertical position and secure to the roof
structure with the clamp supplied.
2. For flat roof installations the aluminium flashing must be
incorporated into the roof covering and the appropriate aperture
made in the roof decking. The vertical flue is lowered onto the
flashing making sure the collar of the flue locates securely with the
flashing. (A mastic seal may be necessary). From inside the roof,
adjust the flue to a vertical position and secure to the roof structure
with the clamp supplied.
IMPORTANT: If the boiler is not fitted immediately after the flue
system, temporary precautions must be taken to prevent rain entry
into the room of installation. Any precautionary measures must be
removed prior to commissioning the boiler.
Cut air duct to leave 170mm
of exhaust duct protruding
170mm
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