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hydraulic circuit
inside the unit
N.B.
For the correct design of the hydraulic sy-
stem comply with local safety regulations
currently in force. The following informa-
tion constitutes suggestions for the cor-
rect installation of the unit.
Standard equipment
The unit comes as standard with
in the standard versions (°):
Plate-type heat exchanger
Differential pressure switch between
the inlet and outlet of the evaporator
to avoid problems of freezing if there is
no flow of water.
in the versions with accumulation and
pump(A):
Plate-type heat exchanger
Differential pressure switch between
the inlet and outlet of the evaporator
to avoid problems of freezing if there is
no flow of water.
For the sizes 020 - 025 - 030 - 041, the
differential pressure switch is replaced
Plumbing section
by a flow switch.
Diaphragm type expansion tank with
precharge of nitrogen.
The storage tank lowers the number of
compressor peaks and standardise the
temperature of the water to send to the
users.
Circulation pump
in the versions with accumulation and
pump (K):
Plate-type heat exchanger
Differential pressure switch between
the inlet and outlet of the evaporator
to avoid problems of freezing if there is
no flow of water.
For the sizes 020 - 025 - 030 - 041, the
differential pressure switch is replaced
by a flow switch.
Diaphragm type expansion tank with
precharge of nitrogen.
The storage tank lowers the number of
compressor peaks and standardise the
temperature of the water to send to the
users.
Circulation pump
Integrated heating element with base
which turns on the element on the ba-
sis of three mechanical thermostats.
in the versions with accumulation and
pump (J):
Plate-type heat exchanger
Differential pressure switch between
the inlet and outlet of the evaporator
to avoid problems of freezing if there is
no flow of water.
For the sizes 020 - 025 - 030 - 041, the
differential pressure switch is replaced
by a flow switch.
Diaphragm type expansion tank with
precharge of nitrogen.
The storage tank to lower the number
of compressor peaks and standardise
the temperature of the water to send to
the users.
Circulation pump
Integrated heating element with basic
control which turns the heating ele-
ment on the basis of a dedicated con-
trol, furthermore it has the possibility
of managing a three-way valve (not
supplied).
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