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6 .8 Flue gas channelling
A flue gas system must be fitted on the furnace as a means
of guiding the flue gas to the chimney.
In the flue gas system there should be a low negative pres-
sure thanks to the draught of the chimney or an exhaust fan.
The eductor or the flue gas connector on the burner can be
equipped with protection against accidental contact, but they
must not be insulated.
6 .8 .1 Indirect heating
The flue gas system on the furnace should stop 10 mm away
from the flue gas connector, or be fitted flush with the eductor.
For indirect heating with flue gas monitoring kit DW and
BCU 465, excessive negative pressure in the flue gas system
or an excessively narrow flue gas pipe diameter on the fur-
nace can cause problems with setting the switching point of
the pressure switch.
ECOMAX · Edition 02.11
∅1.5Q
∅2Q
∅2Q*
∅Q
∅Q
* With flue gas monitoring kit DW; without flue gas monitoring kit
DW: 1.5Q to 2Q.
ECOMAX 0
ECOMAX 1
ECOMAX 2
ECOMAX 3
ECOMAX 4
DN 100
ECOMAX 5
DN 100
∅1.5P
∅ Q
∅ P
DN 32
43
DN 50
43
DN 50
73
DN 65
79
98
98
34
∅P
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