hergom DERO SE Installation, Use And Maintenance Instructions page 19

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 insta-
llations (radiators) must always be open to enable
the heater to dissipate any overheating or overs-
peed.
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
below 50ºC. This will avoid condensation when ligh-
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
ting 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 connec-
ted with the installation. The installer must comply
with local regulations in order to install the system
correctly.
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