28
INSTALLER
INSTALLER
3.11
Discharge of combustion products
The flue gas exhaust and stack connection must be made in compliance with applicable laws and standards, using heat resistant,
condensate resistant and stress resistant rigid pipe and sealed joints.
The stack must be fitted with a condensate trap and drain and the flue gas exhaust pipe must be installed at a slope of at least 3°
towards the boiler.
DIMENSIONS (mm)
TAU N
2100
2600
H - Height of flue gas
outlet
521
552
mm
Ø i Diameter of flue gas
fitting
400
450
mm
øi
RIELLO TAU N
H
drain
flue
condensate
boiler
condensate
at discharge
or neutralisation
of condensate
9
The stack must guarantee the minimum draught specified by applicable technical standards, assuming zero pressure at the
connection to the flue gas exhaust.
9
Inadequate or badly dimensioned stacks and flues can increase combustion noise and affect combustion parameters
9
Joints must be sealed using suitable materials (e.g. filler, mastic or silicon based sealant).
9
Uninsulated flues are potentially dangerous and can cause burns.
9
If plastic flue gas outlet ducts are used, install an O-ring safety thermostat set to 90°C. Install the thermostat on the flue gas
outlet, with the distance from the boiler body outlet equal to the diameter of the flue gas outlet itself.
