Biodom 27 A | instructions for use, maintenance and installation | March 2019
41
16. BOILER CONNECTION INSTRUCTIONS
To connect boiler Biodom 27 A to central heating system you must check:
• Correct installation of pipelines of central heating (pipeline dimensions, air extraction, pipe
system functionality, adequacy of heating system according to boiler power).
• Distribution units (pump functionality, closing valves functionality, electrical zone valves func-
tionality, mixed valves functionality…).
• Ensured inlet of air into the space where Biodom 27 A combustion device is installed. Inlet
must be executed in a manner, so that it cannot be closed and must, at any moment, enable
supply of fresh air – oxygen for burning into space. Unsuitable solutions are slightly opened
windows or open doors, supply of air through a duct along the flue from the roof is also un-
suitable.
• Voltage of electrical connection for combustion device Biodom 27 A must be 220-230 V / 50
Hz (given in technical data for boiler Biodom 27 A).
• Inspection of outlet of smoke gases – flue. Condition for connection is a consent from chimney
sweep, with which a chimney sweep ensure suitability of the flue for combustion device Bio-
dom 27 A.
In placing and connecting the combustion device to central heating system, the installer must adhere
to the following:
• Boiler Biodom 27 A must be positioned horizontally, in length and depth.
• Distances, according to the enclosed drawing, must be regarded (see figure 1).
• In cases of older installation on return line to combustion device Biodom 27 A, a cleaning ele-
ment with closing valves is installed.
• Boiler Biodom 27 A is fitted with safety valve of 2.5 bar on return line. Installer must ensure
proper size of expansion container for volume of heating water in the system (size of expansion
container must be dimensioned minimum of 10 % of water volume in system "150 litres of
heating water in the system, minimum volume of expansion container must be 15 l". expansion
container must be installed on combustion device Biodom 27 A without closing elements.
• A filling release tap must be installed on the right side of the boiler, on connection DN20.
• Minimal pressure of heating water in boiler of 0.7 bar is ensured.
• In case where there are many heating loops (two direct loops or mix loops for radiator heating,
boiler heating, convector heating), connection scheme nr. 3 is always used, where it is neces-
sary to use a hydraulic switch and pump on boiler loop, which is electrically connected to cable
"pump" from the boiler (see figure 8).
• Boiler must be fitted with pressure gauge for pressure of heating water in the boiler, i.e. on
pipeline before each closing valve (enable that the pressure gauge indicates pressure in the
boiler and system; in the time of filling "there cannot be a closing element, which could prevent
indication of pressure in the boiler in the time of filling"). On the right side of Biodom 27 A is
a provided DN20 connection for filling release tap. Filling release tap is intended for filling or
emptying the heating system and boiler.
To Next Page
Loading...
