Immergas ERP DIM BASE Operating instructions

ERP
MULTI-SYSTEM
DISTRIBUTION
MANIFOLD
ERP DIM BASE
IE
Instructionsandrecommendations
Installer
User
Maintenancetechnician
*1.039169ENG*

e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its
technical and commercial documents without forewarning.
Dear Customer,
Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Immergas customer you can also
count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your products. Read the following pages carefully: you will be able to draw
useful suggestions regarding the correct use of the appliance, the respect of which, will conrm your satisfaction for the Immergas product.
For assistance and scheduled maintenance contact Authorised Immergas Aer-Sales centres: they have original spare parts and are specically trained directly by the
manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
e material must be stored in dry environments protected against bad weather.
e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
is instructions manual provides technical information for installing Immergas appliances. As for the other issues related to the installation of appliances (e.g. safety in the
work site, environment protection, injury prevention), it is necessary to comply with the provisions of the regulations in force and the principles of good practice.
In compliance with legislation in force, the systems must be designed by qualied professionals, within the dimensional limits established by the Law. Installation and
maintenance must be performed in compliance with the regulations in force, according to the manufacturer’s instructions and by professionally qualied sta, intending sta
with specic technical skills in the plant sector, as envisioned by the Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems to people, animals and objects.
Read the instructions provided with the product carefully to ensure a proper installation.
Maintenance must be carried out by skilled technical sta. e Authorised Aer-sales Service represents a guarantee of qualications and professionalism.
e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially dangerous.
If errors occur during installation, operation and maintenance, due to non compliance with technical laws in force, standards or instructions contained in this book (or however
supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damages and the appliance warranty is invalidated.
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE), declares that the design, manu-
facturing and aer-sales assistance processes comply with the requirements of standard UNI EN ISO 9001:2015.
For further details on the product CE marking, request a copy of the Declaration of Conformity from the manufacturer, specifying the
appliance model and the language of the country.

INDEX
1 Installing the device .......................................................5
1.1 Description of the device....................................................... 5
1.2 Installation recommendations.............................................. 5
1.3 Main dimensions.................................................................... 6
1.4 Hydraulic connection. ........................................................... 7
1.5 Electrical connection. ........................................................... 7
1.6 ErP DIM Base installation diagram..................................... 8
1.7 Circulation pump. .................................................................. 9
1.8 Main components................................................................. 11
1.9 Sizing the systems................................................................. 11
1.10 Commissioning the device.................................................. 11
1.11 Kits available on request...................................................... 11
2 Use and maintenance instructions...............................12
2.1 General warnings. ................................................................ 12
2.2 Warnings for the user........................................................... 12
2.3 Cleaning the case.................................................................. 12
3 Checks and maintenance..............................................13
3.1 Wiring diagram - Boiler connection using ErP DIM
base 3-relay board................................................................. 13
3.2 Wiring diagram - Boiler connection using ErP DIM
base 1-relay board................................................................. 14
3.3 Wiring diagram - Boiler connection using ErP DIM
base external relay................................................................. 15
3.4 Wiring diagram - DIM Base ErP connection to multi-
zone P.C.B. kit. ...................................................................... 16
3.5 Troubleshooting.................................................................... 16
4 Technical data............................................................... 17

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1 INSTALLING THE DEVICE
1.1 DESCRIPTION OF THE DEVICE.
e abbreviation “D.I.M.” (Disgiuntore Idrico Multi-impianti -
multi-system distribution manifold) identies a series of kits that
Immergas has designed for the management of central heating
systems with large water capacities. In particular, they are kits that
can only be coupled with some boiler models in the Immergas
range, including an open manifold (distribution manifold) and
a circulator.
IMPORTANT: the boiler models set-up for coupling with the mani-
folds are Immergas boilers with P.C.B. designed for the management
of zone systems.
ese kits are characterised by the possibility to be recessed in the
wall, therefore have no clearance.
e zone served by the distribution manifold is managed by an
Immergas chrono-thermostat connected to the boiler.
1.2 INSTALLATION RECOMMENDATIONS.
e place of installation of the appliance and relative Immergas
accessories must have suitable features (technical and structural)
such to allow (always in safety, eciency and comfortable con-
ditions):
- installation (according to the provisions of the technical legis-
lation and technical regulations);
- maintenance operations (including scheduled, periodic, routine
and special maintenance);
- removal (to outdoors in the place for loading and transporting
the appliances and components) as well as their eventual replace-
ment with appliances and/or equivalent components.
Only professionally qualied companies are authorised to install
the Immergas Multi-System Distribution Manifold. Installation
must be carried out according to regulation standards, current
legislation and in compliance with local technical regulations and
the required technical procedures. Before installing the device,
ensure that it is delivered in perfect condition; if in doubt, contact
the supplier immediately. Packing materials (staples, nails, plastic
bags, polystyrene foam, etc.) constitute a hazard and must be kept
out of the reach of children. In the event of malfunctions, faults or
incorrect operation, turn the device o immediately and contact
an authorised company (e.g. the Authorised Technical Assistance
centre, which has specically trained sta and original spare
parts). Do not attempt to modify or repair the appliance alone.
Failure to comply with the above implies personal responsibility
and invalidates the warranty.
Recess installation.
Do the masonry work creating an opening in the wall suitable to
contain the device (See parag. “Main dimensions”).
Insert the distribution manifold (1) in its seat, remembering to
open the four support ns (2) before inserting it (Fig. 1).
Protect the side edges and the front cover during the recess prepa-
ration for the device.
IMPORTANT: the hydraulic and electrical connections must
be made within the device unit; you must therefore position the
frame rst and then perform the connections.
Attention: the recessed frame is not a supporting structure and
cannot replace the piece of wall removed. It is therefore necessary
to check the correct positioning inside the wall.
Wall-hanging installation.
Fasten the frame to the wall using four expansion plugs suitable
for the type of wall and weight of the device (not supplied) and
using the four drilled holes (see Fig. 2 pos. X).
Use the fairlead and the sheath-holder (3) supplied to limit the
inltration of water inside the frame.

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USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.3 MAIN DIMENSIONS.
Height
(mm) Width (mm) Depth (mm)
700 450 190
Key:
RG - Generator return (G 3/4”)
MG - Generator ow (G 3/4”)
V - Electrical connection
X - Holes for DIM wall-mounted fastening
ErP DIM Base
A - System return (G 3/4”)
F - System ow (G 3/4”)
Connections B, C, D, E are not used on this model

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.4 HYDRAULIC CONNECTION.
Attention: before making the appliance connections, 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 water 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. 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 maintenance
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 sucient
to allow the increase in volume of the water and consequently its
heating without causing the safety valve to open.If this is not the
case, an expansion vessel with appropriately dimensioned capacity
must be installed on the system.
e 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 hy-
draulic 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
ecient earthing system as specied by current safety standards.
Attention: the manufacturer declines any responsibility for da-
mage or physical injury caused by failure to connect the boiler to
an ecient earth system or failure to comply with the reference
standards.
Also ensure that the electrical installation corresponds to maxi-
mum absorbed power specications 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 dierential safety device.
When replacing the power supply cable, contact a qualied rm
(e.g. the Authorised Aer-Sales Technical Assistance Service).
For the main power supply to the appliance, never use adapters,
multiple sockets or extension leads.
Important: it is mandatory to prepare two electrical 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 pass-
ing through the fairlead and the sheath-holder supplied, located
on the upper side of the device.
• Connecting the boiler P.C.B. It allows the DIM BASE operation
to be managed via the boiler settings and commands. 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.

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.6 ERP DIM BASE INSTALLATION DIAGRAM.
If a Comando Amico RemotoV2 (C.A.R.V2) or Super 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, conguring relay K2 in “central heating
phase active”.
Key:
S20-1 - Room thermostat (RT)
1 - External probe (optional)
2 - Boiler
3 - Comando Amico RemotoV2
or Super C.A.R. (optional)
4 - 230V - 50Hz
MZ1 - Direct zone 1 ow
RZ1 - Direct zone 1 return

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.7 CIRCULATION PUMP.
e boiler is supplied with pump tted with speed regulator.
ese settings are suitable for most systems.
In fact, the pump is equipped with electronic control to set ad-
vanced functions. For proper operation one must select the most
suitable type of operation for the system and select a speed in the
available range, with a focus on energy savings.
Selection of operating mode.
When running, the pump indicates the set conguration by means
of the codied lighting of the LEDs. e setting is changed by a
short pressing of the button.
Attention: e pump has various built-in operating modes,
however the constant curve operating mode must be selected
according to the following table.
Circulating pump LED Description
G Y Y YG Do not use
G Y Y YG Do not use
G Y Y YG Do not use
G Y Y YG Do not use
G Y Y YG Do not use
G Y Y YG Do not use
G Y Y YG Constant curve speed 1
G Y Y YG Constant curve speed 2
G Y Y YG Constant curve speed 3
Constant curve: the pump operates maintaining constant speed.
e pump is set at “Constant curve speed 2” by default.
Real time diagnostics: in the event of malfunction the LEDs pro-
vide information on the pump operation status, see table (Fig. 5):
Key:
1 - Function selection button
2 - 2 green (G) / red (R) LEDs
3 - 3 yellow (Y) LEDs
Circulating pump LED
(rst red LED) Description Diagnostics Remedy
R Y Y Y Y Pump blocked
mechanically
e pump cannot restart auto-
matically due to an anomaly
Wait for the pump to make auto-
matic release attempts or manu-
ally release the motor sha acting
on the screw in the centre of the
head.
If the anomaly persists replace the
pump.
R Y Y Y Y Abnormal situation (the
pump continues operating).
low power supply voltage
Voltage o range < 160 Vac Check power supply
R Y Y Y Y Electrical fault
(Pump blocked)
e pump is locked due to
power supply too low or seri-
ous malfunction
Check the power supply if the
anomaly persists replace the pump

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V3
V3
V2
V2
V2
V1
A3
A3
V3
A2
A2
A3
A2
A1
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Head available to the system.
Key:
Vn = Available head
An = Circulating pump absorbed power
Circulator pump absorbed power (W)Circulator pump absorbed power (W)Circulator pump absorbed power (W)
Flow rate (l/h)
Flow rate (l/h)
Flow rate (l/h)
Head (kPa)Head (kPa)Head (kPa)
Proportional pressure curve.
Constant pressure curve
Constant curve

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.8 MAIN COMPONENTS.
Key:
1 - Hydraulic manifold
2 - Drain tting
3 - Pump
4 - Electrical connection box
5 - “Europa” one-way valve
MZ1 - Direct zone 1 ow
RZ1 - Direct zone 1 return
1.9 SIZING THE SYSTEMS.
e ow temperatures to the various system zones may be reduced
compared to the boiler outlet temperatures, according to the
mixture of the ow and return uids inside the DIM. In the event
that the DIM is used to feed Low Temperature zones, check that
the design parameters allow you to achieve a maximum surface
temperature of the radiant oor in compliance with standard
UNI EN 1264.
1.10 COMMISSIONING THE DEVICE.
System lling. Once the device is connected, ll the system via
the boiler lling valve.
Filling is performed at low speed to ensure release of air bubbles
in the water via the boiler and central heating system vents and
of the distribution manifold (if any).
Close radiator vent valves when only water escapes from them.
Close the lling cock when the boiler pressure gauge indicates
approx. 1.2 bar.
N.B.: during these operations, start the circulation pump by ac-
tuating the main switch on the boiler control panel aer having
activated the RT.
1.11 KITS AVAILABLE ON REQUEST.
• System cut-o cock kit (on request). e manifold is designed
for installation of system interception cocks to be placed on
ow and return pipes of the connection assembly. is kit is
particularly useful for maintenance as it allows the DIM to be
drained separately without having to empty the entire system.
e above-mentioned kits are supplied complete with instructions
for assembly and use.

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
2 USE AND MAINTENANCE INSTRUC
TIONS
2.1 GENERAL WARNINGS.
If the device must be deactivated temporarily, act directly on the
main switch to remove voltage from the system and work safely
• Attention: using any components that use electrical power
requires some fundamental rules to be observed:
- do not touch the device with wet or moist parts of the body; do
not touch when barefoot.
- if the device is wall-mounted: do not pull the electric cables, do
not leave the device exposed to the elements (rain, sun, etc.);
- the device power cable must not be replaced by the user;
- in the event of damage to the cable, switch the device o and
contact exclusively professionally qualied sta for replacement;
- if the device is not going to be used for a certain period, discon-
nect the main power switch.
2.2 WARNINGS FOR THE USER.
is device does not require any regulation or control by the user.
It is therefore prohibited to open the device front lid.
e only operation that the user must perform is to periodically
check the water pressure of the system in the boiler. e boiler
pressure gauge should read a value between 1 and 1.2 bar.
If the pressure is below 1 bar (with the circuit cool) restore normal
pressure via the lling valve located in the boiler (see boiler instruc-
tion book).
N.B.: close the valve aer the operation.
If pressure values reach around 3 bar, the boiler safety valve may
be activated.
In this case, remove water from an air vent valve of a radiator until
reaching pressure of 1 bar, or ask for assistance from professionally
qualied personnel.
In the event of frequent pressure drops, contact qualied sta for
assistance to eliminate any system leakage.
At the end of its service life the appliance must not be disposed of
like normal household waste nor abandoned in the environment,
but must be removed by a professionally authorised company.
Contact the manufacturer for disposal instructions.
2.3 CLEANING THE CASE.
Use damp cloths and neutral detergent to clean the manifold
casing. Never use abrasive or powder detergents.

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3 CHECKS AND MAINTENANCE
- Check connection to a 230V-50Hz power mains via an omni-po-
lar disconnector (magnetothermal circuit breaker), correct L-N
polarity and the earthing connection;
- check that the magnetothermal circuit breaker is working prop-
erly;
- make sure the central heating system is lled with water and that
the pressure gauge indicates a pressure of 1÷1.2 bar.
- make sure that the air valve cap (if present) is open and that the
system is well deaerated;
- check sealing eciency of water circuits;
- check the correlation between the electric and hydraulic con-
nections;
If even only a single safety check oers a negative result, do not
commission the system.
3.1 WIRING DIAGRAM  BOILER CONNECTION USING ERP DIM BASE 3RELAY BOARD.
If a remote control or zone control room thermostat is used, its
electric connection must be made directly to the boiler, as de-
scribed in the relative instruction book.
Legenda:
M10-1- DIM zone 1 pump
1 - Connect the brown and blue wires to the relay board
(optional) inserted inside the boiler control panel on the
terminals that are preset for the ACTIVE CENTRAL
HEATING MODE control (see the relay interface kit
instruction sheet)
2 - Connect the yellow/green wire to the earth connection
available in the boiler (see the boiler instruction booklet)
BK - Black
BL - Blue
BR - Brown
G/V - Yellow/green
DIM BASE

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2
3
BK
BK
BL
BL
BR
BR
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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.2 WIRING DIAGRAM  BOILER CONNECTION USING ERP DIM BASE 1RELAY BOARD.
Only use for boilers equipped with the Comando Amico Remoto
V2 remote control and the internal 1 relay board. In this case the
electrical connection of the CARV2 must be made directly to the
boiler as described in the relative instruction book.
Key:
M10-1- DIM zone 1 pump
CARV2- Comando Amico RemotoV2
1 - Boiler integrated P.C.B.
2 - P.C.B. to a relay
3 - Boiler electrical connections zone
4 - 230 V ~
BK - Black
BL - Blue
BR - Brown
ERP DIM BASE
BOILER
CARV2

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1
2
BK
BK
BL
BL
BL
BR
BR
BR
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.3 WIRING DIAGRAM  BOILER CONNECTION USING ERP DIM BASE EXTERNAL RELAY.
If a remote control or zone control room thermostat is used, its
electric connection must be made directly to the boiler, as de-
scribed in the relative instruction book.
Key:
M10-1- DIM zone 1 pump
K1 - External relay (optional)
S1 - External relay contact (optional)
S20 - Room thermostat (optional)
1 - Boiler ignition request
2 - 230 V ~
BK - Black
BL - Blue
BR - Brown

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BK
BK
BL
BR
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.4 WIRING DIAGRAM  DIM BASE ERP CONNECTION TO MULTIZONE P.C.B. KIT.
Key:
M10-1- DIM zone 1 pump
CARV2- Comando Amico RemotoV2
1 - Electrical connection 230Vac~50Hz
2 - Earth
3 - Neutral
4 - Line
5 - Multi-service board
6 - Low voltage connection terminals
BK - Black
BL - Blue
BR - Brown
3.5 TROUBLESHOOTING.
- Presence of air in the system. Check the opening of the boiler
vents, of the the central heating system and of the DIM. Make
sure the system pressure and expansion vessel factory-set pres-
sure values are within the set limits; the factory-set value for the
expansion vessel must be 1.0 bar, and system pressure between
1 and 1.2 bar.
CARv2-1

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
ErP DIM Base
Maximum nominal pressure bar 3
Maximum operating pressure °C 90
Water content in device l 0.9
Total head available in direct zone with 1000 l/h ow rate (max) kPa (m c.a.) 42.90 (4.37)
Empty device weight kg 12.5
Full device weight kg 13.9
Electrical connection V/Hz 230/50
Maximum input A 0.60
Installed electric power W 60
Power in Stand-by W 0
Value EEI - ≤ 0.20 - Part. 3
Electric plant protection - IPX5D
Maximum distance between boiler - DIM m 15
4 TECHNICAL DATA

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immergas.com
Immergas S.p.A.
42041 Brescello (RE) - Italy
Tel. [phone]
Fax [phone]
is instruction booklet
is made of ecological paper
Cod. 1.039169ENG - rev. ST.002144/002- 05/22