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3.2.4.
Installing the boiler
Before connecting the boiler to CH and DHW systems, clean the pipes carefully.
- Before commissioning a NeW system, clean it to remove any metal chips due to machining and welding, and any oil and grease
that might negatively affect boiler operation or even damage it in case they get inside it.
- Before commissioning a ReCoNDITIoNeD system (where radiators have been added, the boiler has been replaced, etc.)
thoroughly clean it to remove any sludge and residues.
Clean the system using standard non acid products, available on the market.
Do not use solvents as they could damage system components.
furthermore, in the central heating system (either new or reconditioned), it is always advisable to add to water a suitable
percentage of corrosion protectants for multi-metal systems that will create a protective film onto all internal surfaces.
The manufacturer shall not be held responsible in case of damage to people, animals, or property due to failure to follow the
above mentioned instructions.
for all boiler installation types, it is necessary to install a filter which can be inspected (Y-shaped type) with Ø 0.4mm-mesh, on
the return pipe before the boiler.
In order to install the boiler proceed as follows:
- secure the template (fig. 9) to the wall;
- drill two Ø 12 mm holes in the wall to accommodate the boiler bracket wall blocks;
- if necessary, provide holes in the wall to allow air intake and/or flue gas venting pipes to pass through it;
- secure the supporting bracket to the wall using the blocks supplied with the boiler;
- position the connections for the gas mains pipe (G), the cold water inlet pipe (F), the secondary return from the water cylinder (RB) (only model
KRB), the hot water outlet pipe (C) (only model KC), the secondary flow to the water cylinder (MB) (only model KRB), the hot water inlet pipe (m)
and return pipe (R), as indicated at the bottom of the template;
- provide an outlet for the condensate drain and one for the 3-bar safety valve;
- hook boiler to supporting bracket;
- connect the boiler to mains pipes by means of the coupling kit supplied with the boiler (refer to 3.2.9. paragraph);
- connect the boiler to pipe for condensate drain (refer to 3.2.9. paragraph);
- provide a system for relieving the 3-bar safety valve;
- connect the boiler to the air intake and flue gas venting system (refer to 3.2.6. paragraph and following sub-paragraphs);
- connect electric power supply, ambient thermostat (when available) and other available accessories (refer to the following paragraphs).
3.2.5.
Boiler room ventilation
The boiler has sealed combustion chamber. Combustion air is not drawn from boiler room, therefore no specific recommendations need to be
applied concerning the boiler room or openings and ventilation provided to the boiler room.
The boiler must be installed in a room that is compliant with the legislation and standards in force in the country of installation,
which are herein considered as entirely transcribed.
