GENERAL SAFETY REGULATIONS
IN CASE OF INSTALLATION ON OPEN
TANK SYSTEMS
dance with the laws in force, particularly with Italian D.M 37
For installations implemented outside Italy, please refer to the
local regulations in the country of use.
than 18 mm) to the open expansion tank.
All the vents of the radiators must be opened during this
phase so as to prevent air pockets from forming in the system,
which would obstruct the circulation of water.
NB:
The open tank should be positioned at a height greater than
3 m higher than the highest component of the primary circuit
pressure than that produced by the pump (circulator).
mains as the pressure may be greater than that stipulated on
insulated to prevent the water inside from freezing, which
would compromise the connection.
contained in the system or to observe standard UNI 8065.
irreparable damage.
the safety valve (SV) (diagrams are found on the following
pages).
expansion tank open.
sanitary water circuit so as to drain any excessive increase in
the volume of the water in the heat exchanger.
exchanger, valves, etc.) in easily accessible points for routine
and special maintenance procedures.
WATER TREATMENT
If need be, antifreeze, descaling and anticorrosive solutions
are to be added to the water.
A softener must be used if the hardness of the water used to
IN CASE OF INSTALLATION ON CLOSED
TANK SYSTEMS
(provisions in addition to those provided for open tank
systems)
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marked with the abbreviation CS).
an assessment must be made regarding a need for another
CLOSED TANK on the system.
- The upstream pressure of the cooling circuit must be at least
Please refer to UNI 8065-1989 standard (water treatment in
domestic heating systems).
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