Viadrus GRAND G 36, Manual For Operation And Installation

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Pressure loss & flow diagram
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4. Boiler description
4.1 Boiler construction
The cast-iron sectional boiler drum made of grey cast iron according to:
Č
SN 42 2420 - „Cast iron 42 2420 with laminated graphite“ is the main part of the boiler.
The boiler construction corresponds to the strength requirements according to:
EN 297
Gas – fired central heating boilers – Type B
11
and B
11BS
fitted with atmospheric burners of
nominal heat input not exceeding 70 kW
The boiler output is determined by number of sections. Individual sections are connected by means of forced
on insertions
φ
47 mm (length 36 mm, angle 1°45") and are tightened by anchor bolts thus creating the
combustion space, convection surface and boiler water volume inside the sections. The heating water inlet
and outlet in the rear part of boiler is equipped with pipes 1 1/2”. At the return water connection there is
installed the discharge valve. At the heating water outlet there must be installed an automatic bleeder valve
which is included in the serial delivery. The whole boiler drum is insulated by using a harmless mineral
insulation, which reduces the losses caused by heat transfer to the ambient.
To the upper part of boiler drum there is fastened by means of screws an inbuilt draught diverter with the
neck for putting on a smoke pipe. The draught diverter is equipped with a dismountable cleaning cover.
The boiler drum is positioned on a steel base closing the burner space from below. The anticorrosive steel
cover plate and thermal insulation belong to the boiler drum.
The boiler steel shell surface is coated with a good quality comaxit paint.
We offer the stationary boiler with the security and control automatics in the natural gas version with the
lighting burner.
For VIADRUS GRAND G 36 boiler the atmospheric burner consists of a round tubes type 5T with cooling
rods.
3 sect.
4 sect.
5 sect.
6 sect.
7 sect.