17
Installation info
fig. 18
fig. 19
PRODUCTION OF D.H.W.
Drawing temperature °C
Flow rate (Q) l/h
Pressure available m.c.a.
DIAGRAM OF FLOW RATE/PRESSURE AVAILABLE FOR THE INSTALLATION
2.2.12 – HYDRAULIC CONNECTION
Before installing the boiler we recommend that
the system be cleaned to remove any impuri-
ties which could originate from components
and which could risk damaging the circulating
pump and exchanger.
HEATING
The heating flow and return must be connected
to the relative ¾” connections of the boiler
M
and
R
(see fig. 5).
When determining the size of the heating cir-
cuit pipes it is essential to bear in mind the
load losses induced by radiators, any thermo-
static valves, radiator cut-off valves and the
configuration of the system.
We recommend that the discharge of the sa-
fety valve mounted in the boiler be conveyed
into the sewer.
If this precaution is not taken, activation of
the safety valve may result in flooding of the
room where the boiler is installed.
UNICAL shall not be held responsible for da-
mage caused by non-observance of this tech-
nical precaution.
UNICAL shall not be held responsible for
damage caused by non-observance of this
technical precaution.
D.H.W.
Outlet and inlet of D.H.W. must be connected
to the relative ½” connections of the boiler
C
and
F
(see fig. 5).
The mains supply pressure must not exceed
7 bar. A pressure reducer and the sanitary
expension vessel kit must be installed if the
pressure is higher.
It is advisable to limit the pressure in the
D.H.W. system to 3 bar.
WARNING
Depending on the hardness of the supply
water, it is important to assess the conve-
nience of installing a domestic device to
dose products of food purity which can be
used to treat the drinking water.
It is always advisable to treat the water if
the supply water has a hardness value of
more than 20°F.
WARNING
Due to its pH value, water supplied from
normal water softeners may not be compa-
tible with some components of the heating
system.
IMPORTANT
The outlet of the safety valves in the boiler
should be connected to the drainage sy-
stem, otherwise
the room may get flooded if the safety val-
ves come into operation.
UNICAL shall not be held responsible for
danaged caused by non-observance of this
technical precaution.
2.2.13 - CONNECTION TO THE
POWER MAINS
The
IVEN B60
boiler is supplied with a triple-
pole lead, already connected at one end to
the electronic board and protected against
tearing by a special cable clip.
The boiler must be connected to the power
mains at
230V-50Hz
.
Make sure the poles correspond, correctly
connecting phase and neutral.
When installing the boiler comply with
applicable standards which shall be con-
sidered as having been incorporated in
full in this manual.
A bipolar switch must be installed upstream
of the boiler to enable all maintenance opera-
tions to be carried out safely.
The boiler mains supply must be protected by
a differential magnetothermal switch with ap-
propriate breaking power.
The mains power supply must be earthed.
This fundamental requirement for safety pur-
poses must be checked; in case of doubt,
ask for a professionally qualified technician
to check the electrical system.
UNICAL disclaims all liability for damage
on injury caused by failure to earth the sy-
stem properly.
Gas, domestic water and central heating pi-
pes are not suitable for earthing purposes.
ΔΔΔΔΔ
t mean = 41,9°C
Quantity drawn at 10 litres/min
