Installation manual

3. Description
3.1. Boiler construction
The boiler body (Fig. No.1) consists of sections assembled by means of forced-on insertions and is secured
by anchor bolts. Boiler has a three-draught construction and the sections create the combustion space and the
convection part, inside then the boiler water space. The tightness of boiler gas combustion space is guaranteed
by boiler cement applied to sections seating faces and to circumference of individual section joints.
On the front section there are fixed sealing and burner plates that either can be opened to right or left hand
side according to boiler room layout. This must correspond with screw suspensions positioning (lugs).
The openings G 2"in the front section are closed with plugs G 2". The upper plug has a boring G 1/2“ for
the basin of regulation and safety thermostat. In the left upper riser of the section there are two openings G
1/2" for thermometer and pressure gauge sensors.
The input and output of a heat carrying substance is situated at the rear part of boiler and it is carried out with
flanges and a mouthpiece DN 80. At the lower flange with a mouthpiece there is positioned the filling &
discharging cock. In the opening for heat carrying substance input (under the flange) there is positioned a
restrictive insertion (5 – 10 sections and 11 – 14 sections), which streamlines the water flow in boiler.
The combustion gases from the boiler are led/ taken away through a flue orifice with an explosion shutter
which at the same time serves as a small cleaning cover. At the flue orifice there are measuring points for
temperature and combustion gases analysis.
The boiler body is fully insulated by plates made of mineral insulation . The steel shell of boiler is surface
treated by comaxite paint. In the upper front part of boiler there is positioned the electro-panel with regulation,
safety and control elements.
Fig. No.1 Boiler assembly
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