7
1-3
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.4 HYDRAULIC CONNECTION.
Attention: before making the appliance con-
nections, clean the heating system thoroughly
(pipes, radiators, etc.) with special pickling or
de-scaling products to remove any deposits that
could compromise correct device operation.
A chemical treatment of the thermal system wa-
ter is required, in compliance with the technical
standards in force, in order to protect the system
and the appliance from deposits (e.g., lime scale),
slurry or other hazardous deposits.
e hydraulic connections must be made in a
rational manner using the values as per Fig. 1-2.
IMPORTANT: remove all the protection caps
from the system ow and return pipes before
making the hydraulic connections.
e connections can be made directly using the
female couplings on the distribution manifold
or by inserting system cut-o cocks (optional).
ese cocks are particularly useful for mainte-
nance as they allow you to drain the distribution
manifold separately without having to empty the
entire system.
N.B.: Immergas does not supply the G1” cocks to
be installed in the low temperature zone.
Check that the expansion vessel present in the
boiler, is sucient to allow the increase in vol-
ume of the water and consequently its heating
without causing the safety valve to open.If this
is not the case, an expansion vessel with appro-
priately dimensioned capacity must be installed
on the system.
The D.I.M. is set-up for the insertion of the
automatic “jolly” vent valve to be mounted on
the manifold. is is recommended for better
air venting inside the system.
If two D.I.M devices are installed in parallel, two
manual valves must be tted in order to ensure
the correct balance of the hydraulic circuit.
1.5 ELECTRICAL CONNECTION.
e appliance has an IPX5D protection degree,
electrical safety of the appliance is reached only
when it is connected properly to an ecient
earthing system as specied by current safety
standards.
Attention: the manufacturer declines any
responsibility for damage or physical injury
caused by failure to connect the boiler to an
ecient earth system or failure to comply with
the reference standards.
Also ensure that the electrical installation corre-
sponds to maximum absorbed power specica-
tions as shown on the recessed unit data-plate.
e distribution manifold is supplied complete
with an “X” type power cable without plug.
e power supply cable must be connected to a
230V ±10% / 50Hz mains supply respecting L-N
polarity and earth connection; , this network
must also have a multi-pole circuit breaker with
class III over-voltage category.
To protect from possible dispersions of DC
voltage one must provide a type A dierential
safety device.
When replacing the power supply cable, contact
a qualied rm (e.g. the Authorised Aer-Sales
Technical Assistance Service).
For the main power supply to the appliance,
never use adapters, multiple sockets or exten-
sion leads.
Important: it is mandatory to prepare two elec-
trical connection lines in order to separate the
power supply of each distribution manifold from
all other low voltage connections according to the
Standards in force regarding electrical systems.
ese lines must arrive inside the recessed frame
via relevant sheaths or ducts passing through the
fairlead and the sheath-holder supplied, located
on the upper side of the device.
• Connecting the boiler P.C.B. is connection
(low voltage) ensures the dialogue the between
boiler and DIM. Perform the connections as
described in chapter 3.
N.B.: the electrical connection between the
devices must be made using cables with a
minimum section of 0.50 mm2and with a
maximum section of 2.5 mm2; the length of
these connections must not exceed 15 metres.
1.6 ERP DIM BASE INSTALLATION
DIAGRAM.
If a Comando Amico RemotoV2 (C.A.R.V2) or Su-
per C.A.R. zone control remote control or a room
thermostat are used, they must be connected
electrically directly to the boiler (see instructions
in boiler manual).
Attention: it is also necessary to install the relay
board in the boiler as shown in Fig 3-1, cong-
uring relay K2 in “central heating phase active”.
Key:
S20-1 - Room thermostat
1 - External probe (optional)
2 - Boiler
3 - Comando Amico RemotoV2
or Super C.A.R. (optional)
4 - System ow
5 - System return
