ENGLISH
HYDRAULIC SYSTEM
Certain concepts referring to the Italian Standard UNI 10412-2 (2009) are described in this chapter.
As previously described, when installing, all national, regional, provincial and council Standards in force provided by the country in which the
appliance has been installed must be complied with.
During installation of the generator it is MANDATORY to adjust the system with a manometer in order to display the water pressure.
TABLE OF THE DEVICES FOR CLOSED VESSEL SYSTEMS PRESENT AND NOT PRESENT IN THE PRODUCT
Safety valve
p
Pump control thermostat (it is controlled by the water probe and the board program)
p
Acoustic alarm activation thermostat
-
Water temperature indicator (display)
p
Pressure transducer with view on the display
p
Acoustic alarm
-
Automatic adjustment circuit breaker switch (managed by board program)
p
Pressure transducer with minimum and maximum pressure switch alarm
p
Water overheating automatic circuit breaker switch (block thermostat)
p
Circulation system (pump)
p
Expansion system
p
INSTALLATION AND SAFETY DEVICES
The installation, relative system connections, commissioning and inspection of correct functioning must be carried out with the highest
professional standards, in full compliance with the national, regional and council Standards in force, as well as these instructions. For Italy,
installation must be carried out by professionally authorised staff (Ministerial Decree dated 22.01.08 n°37).
The Manufacturer declines all liability for damage/injury to objects/persons caused by the plant.
TYPE OF SYSTEM
There are 2 different types of system:
Open vessel system and closed vessel system.
The product has been designed and made to work with closed vessel systems.
CHECK THAT THE PRELOAD OF THE EXPANSION VESSEL IS SET TO 1.5 BAR.
SAFETY DEVICES FOR CLOSED VESSEL SYSTEM
According to Standard UNI 10412-2 (2009)in force in Italy, closed systems must be equipped with: safety valve, pump control thermostat,
acoustic alarm activation thermostat, temperature indicator, pressure indicator, acoustic alarm, regulation automatic circuit breaker switch,
automatic circuit breaker block switch (block thermostat), circulation system, expansion system, safety dissipation system incorporated with
the generator with thermal safety valve (self-activated), whenever the appliance does not have a temperature self-adjustment system.
Pay attention to the correct sizing of the system:
generator power compared to the thermal requirement
possible need for a buffer tank
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