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4.4 Flues
Use stainless steel twin walled insulated flue pipe to flue your Greenflame.
An exhaust fan is used to extract the combustion gases from the firebox. This
creates a negative pressure in the firebox and a positive pressure in the flue system.
The longer the flue pipe and more elbows used in the system, the greater the flow
resistance. Because of these facts we recommend using as few elbows as possible
and 10 meters or less of flue pipe. Be sure to use wall and ceiling pass through
fittings (which are approved for pellet vent pipe ) when going through combustible
materials. Be sure to use a starting collar to attach the flue system to the boiler. The
starting collar must be sealed to the boiler flue collar with high temp silicone caulking
or aluminium tape
Any exterior flues (flue pipe exposed to outside ambient temperatures) should
be kept to a minimum, due to potential condensation problems.
This is especially important in high humidity cold weather climates, such as maritime
areas, lake shores, and low river valleys.
4.5 Flue Pipe
A flue pipe suitable for use with a class 1 appliance (i.e. an appliance burning solid fuel).
is constructed of two layers with insulation between the layers. This insulation reduces
the outside surface temperature to allow a minimum clearance to combustibles of
50mm.
The sections of pipe lock together to form an air tight seal in most cases; however, in
some cases a perfect seal is not achieved. For this reason and the fact that the TR
Engineering Ltd operates with a positive vent pressure, we specify that all joints within
the structure should also be sealed with clear silicone.
NOTE:. Be sure to inspect and clean the exhaust flue system frequently.
It is not recommended that the flue has 90 elbows or
horizontal sections. If the flue must pass through a wall only
45 elbows may be used
NOTE: Read and follow all of the flue pipe manufacturers’ instructions on
the proper installation and support of the vent pipe. Adhere to all
clearances.
TR Engineering Ltd recommend the use of the Therminox range of flues for use
With the TR Engineering Ltd pellet boiler system.
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