Hergom DERO Instrucciones Para Instalación, Uso Y Mantenimiento página 18

3.1 - Installation with closed expansion vessel - outline
A Valve
B Minimum thermometer
C Circulator
D Closed expansion vessel
E Bleeder
F Safety valve (3 BAR)
G Heater drainage
H Auto filling and anti-backflow valve
When installing the radiators, do not place area
thermostat valves on all radiators. Part of the
installations (radiators) must always be open to
enable the heater to dissipate any overheating or
overspeed.
It is obligatory to install a safety valve set at a
pressure of 3 Bar. The installation must be filled at
a pressure of 1 bar.
It is mandatory to include an expansion vessel
(open or closed) in the installation
It is advisable to install a thermostat that will cut
the circulator whenever the water in the boiler is
FIG. 6
I A.C.S. KIT
J Emptying valve
R Thermal security valve
1 A.C.S. electric valve
2 Exchanger
3 Hot domestic water
4 Fluxostat
below 50ºC. This will avoid condensation when
lighting the heater.
It is advisable for all installation components
(safety valve, circulator, expansion vessel...) to be
installed on the backflow.
Industrias Hergom S.A. declines all liability
connected with the installation. The installer must
comply with local regulations in order to install the
system correctly.