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Mareli Systems
3.Transport and assembly of the heating boiler
If possible, transport the heating boiler without unwrapping it. Keep it on the pallet to the point of unloading.
Unwrap in an ecologically clean manner. Respect, construction and ventilation requirements, especially the
active norms for burning devices and storing of burning materials in the room where the unit will be installed.
The minimal distances between the wall and the boiler must be at least of 600 mm. The minimal space in front
of the boiler must be of 1000 mm. The fireproof surface for assembly as well as the foundation must be even
and horizontal. Put fireproof wedges if needed. If the foundation is not even, the side with the connections (the
rear side) may be placed 5 mm higher in order to optimize for ventilation and flow.
The foundation must be bigger than the base of the heating boiler. At least 300 mm from the front side and
100 mm from the rest of the sides.
The water heating boiler must be connected to the heating installation and to the chimney, following the
respective requirements. For the proper and safe functioning of the boiler a levelling is required so that good
airflow is ensured.
Attention!!! Fire risk due to flammable materials and liquids.
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Make sure no flammable materials and/or liquids are in the vicinity of the heating boiler.
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Indicate the user of the installation the minimal distances to flammable and non-flammable materials.
Installing the heating boiler
The installation of the heating boiler will be explained here. In details this is:
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Making the connection with the chimney
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Hydraulic connection
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Connecting the feeding/unloading valve
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Connecting the safety heat exchanger
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Filling the heating installation and density check
4.Instructions for connecting the air supply and exhaust gases
Making the connection with the chimney
Keep in mind that the connection of the heating boiler to the chimney must be performed with rules of local
construction control in mind and the approval of a chimney sweeper.
A chimney with a good draft is the main precondition for the proper functioning of the heating boiler. The
power and economy are greatly influenced by it. The heating boiler can be connected only to a good draft
chimney.
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Install a connection to the exhaust gas with an inspection hole for cleaning.
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If possible, the exhaust gas pipe should be short and inclined from the heating boiler upwards to the
chimney.
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Mount very carefully the exhaust gas pipe which stands freely in the chimney and place firmly the
orifice.
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Attach additional pipes with length over 2 m. All parts of the exhaust gas pipe must consist of non-flam-
mable materials.
Attention!!! Suffocation hazard due to lack of oxygen in the installation room.
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Ensure sufficient fresh air supply through holes out.
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Risk of injury/damage to equipment due to lack of combustion air can lead to tar and noxious gas
formation.
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Ensure sufficient fresh air supply through holes out.
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Notify the user of the installation that these holes must remain open.
Hydraulic joints making
Instruction!!!
Damaging the installation due to non-isolated joints.
Install the connecting pipes without tension to the boiler joints.
The figure shows the connection of the exhaust gases. 1 – draft
stop.
Info: For low exhaust gases condensation and prolonged life,
we recommend equipping the heating boiler with a device for
increasing the backward temperature. This prevents reducing
of the temperature of the boiler’s water below 65º С (point of
combustion irrigation).
