INSTALLATION
14
4.
INSTALLATION
4.1.
Hydraulic connections
If a connection pipe is not used, it must be sealed before water fill!
4.2.
Expansion vessel
The ENDS boiler is recommended to be connected with closed expansion vessel. The volume of
the expansion vessel is calculated according to the quantity of the water in the installation and
the static height. When choosing the expansion vessel, it should never be chosen marginal
size, but a size greater.
The expansion vessel should be connected at the return line of the boiler. Before the
installation, the pressure inside the expansion vessel should be regulated according to its
geometrical height from the point of its position up to the highest point of the installation. If
this height is lower than 8 m, then the pressure is adjusted at 0,8 bar. If the boiler room is on
a rooftop, the pressure on the tank should be adjusted at 0,5 bar.
The automatic filling valve must be installed next to the expansion tank and it is adjusted so
that, when the installation is cool, there is a pressure equal to the geometrical height
mentioned above plus 2 m. In areas where high-pressure distributing networks are present, a
pressure reducing gear must be placed.
Legend
T1
Boiler outet
T2h
Boiler inlet - high temerature
T2c
Boiler inlet - low temperature
T3
Chimney connection
T4
Drianage valve
T5
Safety connection
T6
Condensate draiange connection
