Noise And Noise Reduction Methods; Boiler Placement - SAS BIO SOLID 19 Operation And Maintenance Manual

7.2. NOISE AND NOISE REDUCTION METHODS

The manufacturer made all efforts possible to maintain a noise emitted by
the heating device at a safe acceptable level of <65dB(A). Sub-assemblies
(fan, fuel feeder, moving grate mechanism) installed in the boiler are cha-
racterised by their low noise index. Air-supply ducts were designed in a way
preventing excessive noise during air flow. As there are no technical options to
monitor the condition of wearable boiler components and detect undesirable
objects in the boiler and its sub-assemblies, the boiler operation manual con-
tains information on troubleshooting (as well as on technical and maintenance
assistance). Wearable (deformed in operation) components of the boiler, fuel
feeder, moving grate and and blower fan may emit excessive noise; therefo-
re, regular technical and maintenance inspections are recommended. Due to
the solid fuel boiler design and its moving components, it should be installed
in a separate room (see chapter 7.1 "Requirements for a boiler room"). To
minimise noise transmission from the heating device onto other parts of the
system, damping connectors (vibration compensator, e.g., EFAR, DANFOSS,
etc.) can be installed. The boiler should be set according to guidelines provi-
ded in chapter 7.3 "Setting a boiler".
The boiler should be set in a way ensuring safe and easy operation of the
furnace and the ash box, as well as fuel loading and boiler cleaning. In par-
ticular, an access to side and top clean out hatches and the flue pipe clean
out must be ensured, for periodic removal of the burning process residues.
The distance between the boiler side and the boiler room walls or combu-
stible materials should be no less than 1 m.
No special foundations are required for the boiler. It is recommended to set
the boiler on a 5 cm high concrete platform or it can be directly set on a fire
resistant flooring. The floor on which the boiler is installed should be levelled
precisely, and the floor (ceiling) load bearing capacity should be sufficient for the
boiler weight. When the floor is not levelled precisely, adjustment feet can be in-
stalled for final alignment of the boiler versus the floor. The SAS BIO SOLID boiler
is provided with 4 adjustment feet with a set of nuts and washers. The adjustment
feet are not provided for boilers above 25 kW. The adjustment feet installation is
shown in Figure 9 A).
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7.3. SETTING A BOILER