Kronoterm HM-130 S1, Instructions For Installation, Use And Maintenance Manual

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p
0
– precharge in the Expansion vessel
p
rv
– setting pressure regulator
Example:
The Expansion vessel is filled with nitrogen to a pressure of p
0
= 2,0 bar (0,2 MPa).
The pressure regulator for drinking water at the inlet of the building is set to p
rv
= 4.0 bar
(0,4 MPa).
Consequently, the Expansion vessel must have the following pressure:
The expansion vessel must be supplemented with dry nitrogen to 3.8 bar.
3.5.3 CONNECTING THE HEATING SYSTEM
WARNING
Thorough venting of the system has to be ensured. Otherwise, malfunctions in
operation may occur.
CAUTION
The device can be integrated with an expansion vessel with the volume of 12l. This is
sufficient for heating systems up to the joint volume of 300 l and maximal operating
pressure of 0.3 MPa (3bar). In case of a heating system of a larger volume, it is
necessary to install an external expansion vessel. The dimensions of the Expansion
vessel must be in accordance with standard EN 12828.
For installing the expansion vessel, see chapter 4.4.1
CAUTION
For normal operation of the Expansion vessel, it is necessary to perform proper
adjustments of the tank
’s working pressure. The settings have to be checked every 12
months.
CAUTION
The heating system must be fitted with a safety valve set to 0.3 MPa (3 bar).
3.5.3.1 Mono-energy system
A mono-energy system is a heating system which supplies all the heat from the heat pump
and integrated electric heater.
3.5.3.2 System with one heating cycle and DHW buffer tank
The scheme below shows a heating system with one cycle and a DHW buffer tank.
CAUTION
This model is suitable only for systems with floor, wall or ceiling heating.