3 | Design Information
10 M2320121_en | Installation instructions Pellet boiler PECO
3.4.2 Measuring port
For emissions measurement on the system, a suitable measuring port must be installed
in the connection line between the boiler and chimney system.
Upstream of the measuring port (M) there should be a straight run-in section with a length
about twice the diameter (D) of the connection line. Downstream of the measuring port
(M) there should be a straight run-out section with a length about the diameter (D) of the
connection line. The measuring port must remain closed whenever the system is in
operation.
The diameter of the measuring probe used by Froling customer service is 14 mm. To
avoid measuring errors due to the ingress of false air, the diameter of the measuring port
must not exceed 21mm.
3.4.3 Draught limiter
We generally recommend the installation of a draught limiter. A draught limiter must be
installed if the maximum permissible feed pressure as given in the boiler data for planning
the flue gas system is exceeded.
NOTICE!Install the draught limiter directly under the mouth of the flue line, as the
pressure is constantly low at this point.
3.4.4 Explosion flap
TRVB H 118 (only Austria) stipulates that an explosion flap must be installed in the
connection line to the chimney, directly next to the boiler. It should be situated in such a
way that is poses no risk to persons!
3.4.5 Electrostatic particle separator
For reduction in the emissions an electrostatic particle separator may optionally be
installed in the flue gas line.
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