Immergas MAGIS PRO 5 ERP, MAGIS PRO ERP Series, MAGIS PRO 8 ERP, MAGIS PRO 10 ERP Instruction And Recommendation Booklet
Instruction and
*1.039356ENG*
recommendation booklet
IE
MAGIS PRO ERP
Mono-phase hydronic module to
pair with an outdoor condensing
unit
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 qualied aer-sales service, prepared and updated to guarantee constant eciency of your boiler. 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 conrm your satisfaction for the Immergas product.
Contact our area authorised aer-sales centre as soon as possible to request commissioning. Our technician will verify the correct functioning conditions; he
will perform the necessary calibrations and will demonstrate the correct use of the generator.
For assistance and scheduled maintenance contact Authorised Immergas Aer-Sales centres: they have original spare parts and are specically 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 from bad weather.
e instruction book is an integral and essential part of the product and must also be given to the new user 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 products. As for the other issues related to the installation of products (e.g.
safety at the workplace, environmental protection, accident prevention), it is necessary to comply with the provisions of the standards in force and the principles
of good practice.
In compliance with the legislation in force, the systems must be designed by qualied 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
qualied sta, intending sta with specic 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 for people, animals
and objects. Read the instructions provided with the product carefully to ensure proper installation.
Maintenance must be carried out by skilled technical sta. e Immergas Authorised Aer-sales Service represents a guarantee of qualications 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.
For further information regarding legislative and statutory provisions relative to the installation of gas heat generators, consult the Immergas site at the
following web address: www.immergas.com
CE DECLARATION OF CONFORMITY
(according to ISO/IEC 17050-1)
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE), whose design, manufacturing and aer-sales assistance
processes comply with the requirements of standard UNI EN ISO 9001:2008,
MAGIS PRO ERP hydronic units comply with the following European Directives and European Commission Delegated Regulations:
“Eco-design” Directive 2009/125/EC, “Energy labelling” Directive 2010/30/EC, EU Regulation 811/2013, EU Regulation 813/2013, “Electromagnetic
Compatibility” Directive 2004/108/EC, “Eciency” Directive 92/42/EC and “Low-Voltage” Directive 2006/95/EC.
Immergas S.p.A. declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial
documents without prior notice.
DECLARES that:
Mauro Guareschi
Research & Development Director
Signature:
INDEX
USER page INSTALLER page MAINTENANCE TECHNICIAN page
1 Hydronic module installation. ..........................5
1.1 Installation recommendations. ......................... 5
1.2 Main dimensions. ..............................................6
1.3 Antifreeze protection. ........................................6
1.4 Hydronic module connection unit. ..................7
1.5 Hydraulic connection. ........................................7
1.6 Connecting the chiller line. ............................... 7
1.7 Electric connection. ........................................... 8
1.8 Remote controls and room chrono-thermostats
(Optional). ........................................................... 9
1.9 External temperature probe...............................9
1.10 Heat regulation setting. .................................... 10
1.11 Filling the system. ............................................. 11
1.12 Operating limits. ............................................... 11
1.13 Commissioning the hydronic module
(ignition). ...........................................................11
1.14 Circulation pump. .............................................12
1.15 Hydronic module components. ......................13
1.16 Kits available on request. .................................13
2 Use and maintenance instructions ................. 14
2.1 Cleaning and maintenance. .............................14
2.2 General warnings. ............................................. 14
2.3 Control panel. ....................................................14
2.4 System use. .........................................................15
2.5 Troubleshooting. ...............................................16
2.6 Parameters and information menu. ...............18
2.7 Switching o the hydronic module. ................. 19
2.8 Restoring central heating system pressure. ... 19
2.9 System draining................................................19
2.10 Anti-freeze protection. ..................................... 19
2.11 Case cleaning. .................................................... 19
2.12 Decommissioning. ............................................19
3 Commissioning the package (initial check) ..20
3.1 Hydronic module Hydraulic Diagram .............20
3.2 Wiring diagram. ................................................21
3.3 System lter. ........................................................ 23
3.4 Troubleshooting. ...............................................23
3.5 Programming the P.C.B....................................24
3.6 Pump anti-lock function ..................................28
3.7 3-way anti-lock function ..................................28
3.8 Radiator antifreeze function. ...........................28
3.9 Solar function. ................................................... 28
3.10 Outdoor unit disable function. ....................... 28
3.11 Diverter valve management (summer / winter).
...................................................................... 28
3.12 Anti-Legionalla function. ................................ 28
3.13 Automatic vent function. .................................28
3.14 Yearly appliance check and maintenance. .....28
3.15 Casing removal. ................................................. 29
3.16 Technical data. ...................................................31
3.17 Product che (in compliance with regulation
811/2013). .......................................................... 32
3.18 Parameters for lling in the package che. ....53
HYDRONIC MODULE IN
1
STALLATION.
1.1 INSTALLATION
RECOMMENDATIONS.
e Magis Pro ErP hydronic module was designed solely for wall mounted installation for
heating and air conditioning and to produce
domestic hot water for domestic use and similar
purposes.
In order to operate properly, it must be paired
with an Audax Pro condensing unit; as such, all
the provisions regarding the safety and use of
both appliances must be respected.
e place of installation of the appliance and
relative Immergas accessories must have suitable
features (technical and structural), such as to allow for (always in safe, ecient and comfortable
conditions):
- installation (according to the provisions of the
technical legislation 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 replacement
with appliances and/or equivalent components.
e wall surface must be smooth, without any
protrusions or recesses enabling access to the
rear part. ey are not designed to be installed
on plinths or oors (Fig. 1-1).
Only professionally enabled companies are authorised to install Immergas appliances.
Installation must be carried out according to the
provisions of the laws in force and in compliance
with local technical regulations and the required
technical procedures.
Before installing the appliance, 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.
Should the appliance be contained inside or between pieces of furniture, there must be enough
space for routine maintenance; therefore, it is
recommendable to leave at least 3 cm between the
unit casing and the vertical walls of the furniture.
At least 25 cm of free space must be le above, in
order to be able to carry out maintenance and,
if necessary, install an additional resistance (optional). Leave space under the hydronic module
to allow the hydraulic connections to be serviced.
Keep all ammable objects away from the appliance (paper, rags, plastic, polystyrene, etc.).
Do not put household appliances under the hydronic module as they could be damaged if the
safety valve trips or if the hydraulic ttings leak.
Otherwise, the manufacturer cannot be held liable for any damage to the household appliances.
For the same reasons, it is also recommendable
not to put furnishings, furniture, etc. under the
hydronic module.
In the event of malfunctions, faults or incorrect
operation, turn the appliance o immediately
and contact an authorised company (e.g. the
Immergas Technical Assistance centre, which
has specically 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.
• Installation regulations:
- this hydronic module can be installed outdoors in a partially protected area. By partially protected area, we mean one in which the
unit is not directly exposed to the elements
(rain, snow, hail, etc.).
- Installation is prohibited on the vertical
projection of cooking hobs.
- Installation is also prohibited in places/environments that constitute common parts of
oce condominiums such as stairs, cellars,
entrance halls, attics, los, escape routes,
etc. if they are not located inside technical
compartments under the responsibility of
each individual building and only accessible
to the user (for the features of the technical
compartments, see the technical standards in
force).
- Using specic kits, the hydronic module can
be paired with other Immergas products
and installed inside an outdoor wall using
the specic Solar Container recessed frame
or mounted on an indoor wall in the Domus
Container.
Attention: Installing the wall recessed frame
kit must guarantee the hydronic module stable, ecient support. e recessed frame kit
ensures appropriate support only if installed
correctly (according to the rules of good
practice), following the instructions on its
instructions leaet. e recessed frame for
the hydronic module is not a load-bearing
structure and cannot replace the removed
wall. erefore, correct positioning inside
the wall must be checked. For safety reasons
to prevent leaks, the compartment that will
house the hydronic module in the masonry
wall must be plastered.
Attention: installing the hydronic module
mounted on the wall must ensure the generator
itself stable, ecient support.
e dowels (standard supplied with the unit) must
only be used to secure the unit to the wall; they can
only ensure sucient support if inserted properly
(according to the rules of good practice) on walls
built with solid or semi-hollow bricks. In the
case of walls made from hollow brick or block,
partitions with limited static properties, or in any
case walls other than those indicated, a static test
must be carried out to ensure adequate support.
ese hydronic units are used to heat water to below boiling temperature at atmospheric pressure.
ey must be connected to a central heating
system and domestic hot water circuit suited to
their performance and capacity.
Attention:e storage tank unit must also be
installed in an environment in which the temperature cannot fall below 0°C.
"Anti-Legionella" treatment of the Immergas
storage tank (function enabled when there is
an additional electrical resistance for domestic
hot water). During this phase, the temperature
of the water inside the tank exceeds 60°C with
the subsequent risk of burns. Keep this domestic water treatment under control (and inform
the users) to prevent unforeseeable damage
to people, animals, things. If required install a
thermostatic valve on the domestic hot water
outlet to prevent scalding.
INSTALLERUSERMAINTENANCE TECHNICIAN
YES NO
1-1
5
1.2 MAIN DIMENSIONS.
INSTALLERUSERMAINTENANCE TECHNICIAN
Height
(mm)
760 440 250
CHILLER LINE
LG GP RR R - M RU - MU
G 3/8” G 5/8” 1/2” 3/4” 3/4”
Width
(mm)
CONNECTIONS
DOMESTIC
HOT WATER
Key:
V - Electrical connection
RR - System lling
RU - Storage tank unit return
MU - Storage tank unit ow
R - System return
M - System ow
LP - Chiller line - liquid phase
GP - Chiller line - gaseous phase
Depth
(mm)
SYSTEM
1-2
1.3 ANTIFREEZE PROTECTION.
Minimum temperature -5°C. e hydronic unit
comes standard with an anti-freeze function that
activates the condensing unit when the temperature of the water inside of it falls below 4°C.
In these conditions, the hydronic unit is protected
against freezing up to an ambient temperature
of -5℃.
Minimum temperature -15°C. In the event the
hydronic unit is installed in a place where the
temperature falls below -5°C, it is possible for
the appliance to freeze.
To prevent the risk of freezing follow the instructions below:
- protect the central heating circuit from freezing
by inserting a good-quality antifreeze liquid
into this circuit, which is specially suited for
central heating systems and which is manufacturer guaranteed not to cause damage to
the heat exchanger or other components of
the hydronic module. e antifreeze liquid
must not be harmful to one's health. e instructions of the manufacturer of this liquid
must be followed scrupulously regarding
the percentage necessary with respect to the
minimum temperature at which the system
must be kept. An aqueous solution must be
made with potential pollution class of water 2
(EN 1717:2002).
e materials used for the hydraulic circuits of
Immergas hydronic units resist ethylene and
propylene glycol based antifreeze liquids (if the
mixtures are prepared perfectly).
For life and possible disposal, follow the sup-
plier's instructions.
- Protect the domestic hot water circuit against
freezing by using an accessory that is supplied
on request (antifreeze kit) comprising two
electric heating elements, the relevant cables
and a control thermostat (carefully read the
installation instructions contained in the accessory kit pack).
In these conditions, the hydronic unit is protected
against freezing up to a temperature of -15°C.
Hydronic unit anti-freeze protection (both -5°C
and -15°C) is only ensured if:
- e hydronic unit and the condensing unit are
properly connected to each other and to the
electrical supply voltage circuits;
- e units are continuously powered;
- e units are not in "o" mode.
- e units are not in anomaly (parag. 2.5);
- e unit and/or kit essential components are not
faulty.
e warranty does not cover damage due to interruption of the electrical power supply and failure
to comply with that stated on the previous page.
N.B.: if the hydronic unit is installed in places
where the temperature drops below 0°C, the
domestic hot water connection pipes must be
insulated.
6
1.4 HYDRONIC MODULE
CONNECTION UNIT.
- e hydraulic connection unit is standard sup-
plied with Magis Pro ErP. Make the hydraulic
connection as shown below, making sure to
protect the system ow and return pipes with
their supplied insulating sheaths.
- The R410A circuit wall connection unit is
supplied as an extra kit. Connect the circuit,
following the instructions provided in the
condensing unit instructions booklet.
1.5 HYDRAULIC CONNECTION.
Attention: in order not to void the product war-
ranty, before making unit connections, carefully
clean the heating system (pipes, radiators, etc.)
with special pickling or de-scaling products to
remove any deposits that could jeopardise proper
hydronic module operation.
A chemical treatment of the heating 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. scale),
slurry or other hazardous deposits.
Hydraulic connections must be made rationally,
using the couplings on the hydronic module
template.
Attention: Immergas declines all liability in the
event of damage caused by the inclusion of automatic lling that is not its own brand.
In order to meet the system requirements established by EN 1717 regarding the pollution
of drinking water, we recommend installing the
IMMERGAS anti-backow kit upstream of the
hydronic unit cold water inlet connection. We
also recommend using a category 1, 2 or 3 heat
transfer uid (ex: water + glycol) in the hydronic
unit primary circuit (CH circuit), as dened in
the EN 1717 standard.
Attention: to preserve appliance duration and
eciency features, we recommend installing a
suitable water treatment device if the water has
features that can lead to limescale deposits.
1.6 CONNECTING THE CHILLER LINE.
As far as connecting the chiller line is concerned,
all the instructions contained in the Audax Pro
condensing unit instructions booklet must be
followed.
Make the connections directly on the hydronic
module couplings, or use the rear outlet kit
(optional).
INSTALLERUSERMAINTENANCE TECHNICIAN
e hydraulic connection kit includes:
2 - adjustable expansion bolts
2 - hydronic module support hooks
1 - 3/4” storage tank unit return pipe (RU)
1 - 3/4” storage tank unit ow pipe (MU)
1 - 1/2” system lling pipe (RR)
1 - 1/2” ball valve (RR)
1 - 3/4” system return pipe (R)
1 - 3/4” system ow pipe (M)
1 - 3/4” ball valve (M)
2 - Insulating sheath for system pipes (R - M)
4 - 3/4” telescopic ttings (RU - MU - R)
Gaskets, screws and seal O-Ring
e R410A circuit wall connection kit (optional) includes:
1 - G 3/8” liquid phase chiller line pipe (LP)
1 - G 5/8” gaseous phase chiller line pipe (GP)
MU
RU
V
V
GP
LP
LP
GP
RU
MU
M
R
RR
M
R
RR
Key:
V - Electrical connection
RR - System lling
RU - Storage tank unit return
MU - Storage tank unit ow
R - System return
M - System ow
LP-Chiller line - liquid phase
GP-Chiller line - gaseous phase
Already installed on the module:
1 - System interception tap with 3/4” lter (R)
1-3
7
1.7 ELECTRIC CONNECTION.
e appliance has an IPX4D degree of protection;
electrical safety of the appliance is achieved only
when it is properly connected to an ecient
earthing system, as specied by current safety
standards.
Attention: Immergas S.p.A. declines any responsibility for damage or physical injury caused by
failure to connect the hydronic module to an
ecient earthing system or failure to comply
with the reference standards.
INSTALLERUSERMAINTENANCE TECHNICIAN
- Connection cables must respect the prear-
ranged routes. Use 3 clips (c) (not supplied)
to group the individual cables (max. 1.5 mm2
into the lower terminal board. Use the specic
fairleads (d) on the le side, making sure to put
at most 2 multi-polar cables (max 3 x 1 mm2)
in each fairlead.
As an example, gure 1-5 shows cables in a
hypothetical connection. To make the connections based on your own requirements, see the
instructions below.
• Open the control panel connections compart-
ment (Fig. 1-5).
To carry out electrical connections, all you have
to do is open the connections compartment as
follows.
- Remove the front panel (Fig. 3-5b).
- Remove the cover (b g. 1-4).
1) Loosen the screws (a).
2) Remove the cover (b) from the control
panel (c).
- At this point, you can access the terminal board.
Also ensure that the electrical installation corresponds to the maximum absorbed power speci-
1-4
c
d
c
1
a
1
1
a
2
1
a
b
a
1-5
COM.
CLOSED OPEN
DHW
DIS. AUDAX PRO
Key:
86 /87 - Summer winter switch 3-way valve
81-2 / 82-2 - Zone 2 circulator
83-2 / 84-2 / 85-2 - Zone 2 mixing valve
82-1 / 81-1 - Zone 1 circulator
89 / L - Audax Pro disabling contact
88 / L - Solar inlet
69 / 70 - Domestic hot water integrated resistance control
38 / 39 - External Probe
37 / 38 - Domestic hot water probe (eliminate R8)
42-1 / 43 - Zone 1 CAR
42-2 / 43 - Zone 2 CARV2
23-1 / 24 - Zone 1 humidistat or humidity probe
23-2 / 24 - Zone 2 humidistat or humidity probe
25 - Humidity sensor supply voltage
29-1 / 30-1 - Zone 1 dehumidier
29-2 / 30-2 - Zone 2 dehumidier
T+ / T- (MC) - Audax Pro communication bus
T+ / T- (RS485) - Other Immergas appliance communication
bus
41-1 / 40-1 - Zone 1 room thermostat
41-2 / 40-2 - Zone 2 room thermostat
66 / 65 - Puer central heating probe
65 / 64-2 - Zone 2 ow probe
V2
8
45
cations shown on the hydronic unit data plate.
e hydronic units are supplied complete with
a special “X”-type power cable without a 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, it is necessary to provide a type A dierential
safety device.
When replacing the power supply cable, contact a
qualied company (e.g. the Immergas Authorised
Aer-Sales Technical Assistance Service). e
power cable must be laid as shown (Fig. 1-3).
If the fuses on the electronic boards must be
replaced, use:
- P.C.B.: a T 3.5 A fuse
- heat pump communication board: a T 5.0 A
fuse
For the main power supply to the appliance,
never use adapters, multiple sockets or extension leads.
1.8 REMOTE CONTROLS AND
ROOM CHRONOTHERMOSTATS
OPTIONAL.
The hydronic module is set up for room
chrono-thermostats or remote controls, available as optional kits (Fig. 1-6). A maximum of
2 thermo-regulators can be applied directly to
the appliance.
All Immergas chrono-thermostats are connected
with 2 wires only. Carefully read the user and
assembly instructions contained in the accessory kit.
• On/O Immergas digital chrono-thermostat.
e chrono-thermostat allows:
- set two room temperature value: one for
daytime (comfort temperature) and one for
night-time (reduced temperature);
- set a weekly program with four daily switch
on and switch o times;
- select the required operating mode from the
various possible alternatives:
• manual operation (with adjustable tempera-
ture).
• automatic operation (with set programme).
• forced automatic operation (momentarily
changing the temperature of the automatic
programme).
e chrono-thermostat is powered by two 1.5V
LR 6 type alkaline batteries.
• Comando Amico Remoto Remote Control
Device V2 (CARV2) with climate chrono-thermostat function. In addition to the functions
described in the previous point, the CARV2
panel enables the user to control all the important information regarding operation of
the appliance and the heating system with the
opportunity to easily intervene on the previously set parameters, without having to go
to where the appliance is installed. e panel
is equipped with self-diagnosis to show any
appliance operating anomalies on the display.
e climate chrono-thermostat incorporated
into the remote panel enables the system ow
temperature to be adjusted to the actual needs
of the room being heated or cooled, in order
to obtain the desired room temperature with
extreme precision and therefore with evident
savings in running costs. e CARV2 is powered
directly by the hydronic module by the same
2 wires used to transmit data between the
hydronic module and the device.
Important: the hydronic module is set up to be
able to work with two CARV2 used to control two
separate hydraulic zones.
Comando Amico Remoto Remote Control V2
or On/O chrono-thermostat electrical connections (Optional). e operations described
below must be performed aer having removed
the voltage from the appliance.
-On/O ambient thermostat or chrono-thermostat: must be connected to the 40-1 / 41-1
terminals, eliminating the X40-1 jumper for
zone 1 and 40-1 / 41-1 for zone 2. Make sure
that the On/O thermostat contact is of the
“clean” type, i.e. independent of the mains voltage, otherwise the P.C.B. would be damaged.
- V2 Comando Amico Remoto remote control
must be connected to terminals 42-1 / 43 for
zone 1 and 42-2 / 43 for zone 2, keeping the
X40-1 jumper for the CARV2 in zone 1 and adding another one for zone 2 on terminals 40-2
and 41-2, being careful not to invert polarity
in the connections.
e connections must be made on the terminal
board inside the appliance control panel as described in gure 1-5.
Important: if the Comando Amico Remoto Remote Control V2 or any other On/Off
chrono-thermostat is used, arrange two separate
lines in compliance with current regulations regarding electrical systems. e hydronic module
pipes must never be used to earth the electrical
or telephone system. Make sure this does not
happen before making the hydronic module
electrical connections.
1.9 EXTERNAL TEMPERATURE PROBE.
In general, Magis Pro ErP uses the probe standard supplied on the condensing unit to read the
outdoor temperature.
If the condensing unit is positioned in an area
that is not suitable for temperature reading, it
is advisable to use an additional external probe
(Fig. 1-7), which is available as an optional kit.
Refer to the relative instruction sheet to position
the optional external probe.
e probe can be connected directly to the hydronic module electrical system and allows the
system ow temperature to be set automatically
based on the outdoor temperature in order to
adapt the heat or cooling provided to the system.
e external probe always operates when connected, regardless of the presence or type of room
chrono-thermostat used and can work in combination with Immergas chrono-thermostats.
e correlation between system ow temperature
and outdoor temperature is managed dierently
based on whether the system is managed directly
by the hydronic module or by the CARV2; the
parameters set on the chrono-thermostat take
priority over those set on the hydronic module.
- Hydronic module: the system ow temperature
is determined by the setting on the "Heat regulation" menu and by the "User" menu for the
oset values based on the curves shown in the
diagram (Fig. 1-8).
- CARV2: the system ow temperature is determined by the setting on the central heating
selector (which can be adjusted from 0 to 9)
and by the "Oset" value on the "Regulat." menu
based on the curves shown in the corresponding instructions booklet.
N.B.: if the system is divided into two zones,
the ow temperature is calculated based on the
zone with the higher temperature in central
heating mode and with the lower temperature
in cooling mode.
e electric connection of the external probe
must be made on terminals 38 and 39 on the
terminal board on the hydronic module control
panel (Fig. 1-5).
INSTALLERUSERMAINTENANCE TECHNICIAN
1-6
58
31
1-7
9
1.10 HEAT REGULATION SETTING.
By setting the parameters in the "Heat regulation"
menu, you can adjust how the system operates.
e curves (Fig. 1-8) show the default settings in
the various operating modes available both with
external probe and without.
INSTALLERUSERMAINTENANCE TECHNICIAN
Zone 1 ow temperature in central heating mode, with
R04
R05
R02 R03
Zone 1 ow temperature in cooling mode, with exter-
R13
R12
external probe
U03
nal probe
U05
Zone 2 mixed ow temperature in central heating
mode, with external probe
U04
R08
R09
R06 R07
Zone 2 mixed ow temperature in cooling mode, with
external probe
U06
R17
R16
R11 R10
Flow temperature in central heating mode without
Set Risc
U01
Key:
Rxx - "Heat regulation" menu parameter
TE - Outdoor temperature
TM - Flow temperature
U01 - Zone 2 ow temperature in "User" menu central
heating mode
1-8
external probe
Z1
Z2
R15 R14
Flow temperature in cooling mode without external
U02
Set Raresc
U02 - Zone 2 ow temperature in "User" menu cooling
mode
U03÷06 - Oset value compared to the curve set by the
external probe
Zx - Heating system zone
probe
Z2
Z1
10
1.11 FILLING THE SYSTEM.
Once the hydronic module is connected, ll the
heating system using the lling cock (Fig. 1-33
and 1-4). Filling must be done slowly to allow
the air bubbles in the water to escape through
the vents in the hydronic module and the heating
and air conditioning system.
e hydronic module has one incorporated automatic
vent valve located on the circulator and another on
the central heating manifold. Make sure that the hoods
are loosened.
e lling cock must be closed when the hydronic module pressure gauge indicates approximately 1.2 bar.
N.B.: during these operations, enable the "Venting" functions by setting the "M01" parameter to
ON, which lasts about 18 hours (see the "P.C.B.
programming" paragraph).
System minimum water content.
Minimum water content is mainly important to
provide proper execution of defrosting cycles.
To this end, the minimum amount of water to
guarantee is 7 l/kW for any type of system.
N.B.: it is also important to check that the
dehumidier line has a minimum of 3 l/kW
(dehumidier hydraulic circuit connection).
1.12 OPERATING LIMITS.
e system was designed to work in a specic
range of temperatures and at a specic maximum
ow temperature. e graphic (Fig. 1-9) shows
these limits.
1.13 COMMISSIONING THE HYDRONIC
MODULE IGNITION.
The following requirements must be met to
commission the hydronic module in order to
issue the Declaration of Conformity, if required
by the technical standards in force (the following
operations must be done only by professionally
qualied personnel and in the presence of professionals only):
- check that the internal system is properly sealed
according to the specications set forth by
technical regulations in force;
- check connection to a 230V-50Hz power
mains, correct L-N polarity and earthing
connection;
- switch on the hydronic module and check for
proper ignition;
- check the operation of the main switch located
upstream of the hydronic module and on the
module itself;
Should even just one of these checks have a
negative outcome, the system must not be
commissioned.
INSTALLERUSERMAINTENANCE TECHNICIAN
Operating limits in central heating mode Operating limits in cooling mode
1-9
11
Key:
TE = Outdoor temperature.
TM = Flow temperature
1.14 CIRCULATION PUMP.
e hydronic modules are supplied with a variable speed circulator, which operates at the speed
set in the "A04" parameter (which can be set
between 55% and 100%). e minimum speed
set on the "A03" parameter is used for special
functions (e.g. pump anti-locking function).
Attention: for proper system operation, make
sure that the minimum ow in operating conditions never drops below 500 l/h.
Pump release. If, aer a prolonged period of
INSTALLERUSERMAINTENANCE TECHNICIAN
inactivity, the circulation pump is blocked, turn
the motor sha using a screwdriver. Take great
care during this operation to avoid damage to
the motor.
By-pass Regulation (part. 17 Fig. 1-11). e
hydronic module comes out of the factory with
the by-pass closed.
If necessary, the by-pass can be regulated to
system requirements from minimum (by-pass
closed) to maximum (by-pass open). Adjust
using a at head screwdriver, turn clockwise
and open the by-pass, anticlockwise it is closed.
Total head available to the system.
A
Head (kPa)
D
Max. speed
Max. speed
C
Circulator pump absorbed power (W)
Min. speed
B
1-10
Flow rate (l/h)
A+B = Head available with by-pass closed
B = Head available with by-pass open
C+D = Power absorbed by the pump with by-pass open (dotted area)
D = Power absorbed by the pump with by-pass closed (dotted area)
12
1.15 HYDRONIC MODULE COMPONENTS.
1-11
INSTALLERUSERMAINTENANCE TECHNICIAN
Key:
1 - Domestic hot water inlet valve
2 - System lling valve
3 - 3-bar safety valve drain tting
4 - Inspectable lter
5 - 3 bar safety valve
6 - Hydronic unit circulator
7 - Vent valve
8 - Liquid phase detection probe
1.16 KITS AVAILABLE ON REQUEST.
• 3 kW heating system integrated resistance
kit. Should it be necessary, you can install an
electrical resistance to supplement the central
heating system; this resistance can be installed
directly inside the hydronic module.
• 2 zone kit (1 direct and 1 mixed). Should it be
necessary, you can install the zone kit, which
allows you to divide the heating system into
two separate zones - one direct and one mixed.
• Congurable relay interface kit. e module
is set up for a relay board, which amplies the
9 - System expansion vessel
10 - Flow probe
11 - Plate heat exchanger
12 - Vent valve
13 - Central heating integrated electrical
resistance cap (optional)
14 - Central heating manifold
15 - System ow meter
16 - Return probe
17 - By-pass
appliance features and, thus, the operating
possibilities.
• 2 relay board kit. e hydronic module can
manage up to two dehumidiers. A 2 relay
board that manages dehumidier enabling is
available to pair the appliances.
• R410A circuit connection kit. For R410A
circuit wall connections, there is a kit with the
two pipes necessary to create the circuit.
13
18 - ree-way valve (motorised)
19 - System draining valve
20 - System cut-o tap
21 - System cut-o tap
e above-mentioned kits are supplied complete
with instructions for assembly and use.
USE AND MAINTENANCE
2
INSTRUCTIONS
2.1 CLEANING AND MAINTENANCE.
Attention: to preserve system integrity and keep
the distinguishing safety features, performance
and reliability unchanged over time, you must
execute maintenance operations at least on a
yearly basis in compliance with what is stated in
the point regarding “annual appliance check and
maintenance”. Annual maintenance is essential to
validate the conventional warranty of Immergas.
INSTALLERUSERMAINTENANCE TECHNICIAN
We recommend stipulating a yearly cleaning and
maintenance contract with your zone Immergas
Authorised Aer-sales Service.
2.2 GENERAL WARNINGS.
Do not expose the hydronic module to direct
steam from cooking surfaces.
Children and unskilled persons are not allowed
to use the hydronic module.
Should you decide to temporarily shut down the
hydronic module, you must:
a) drain the heating system if antifreeze is not
used;
b) shut o the electrical and water supply.
Never clean the appliance or connected parts
with easily ammable substances.
Never leave containers or ammable substances
in the same environment as the appliance.
• Attention: using any components that use
electrical power requires some fundamental
rules to be observed:
- do not touch the appliance with wet or moist
parts of the body; do not touch when barefoot;
- never pull electrical cables or leave the appliance exposed to weathering (rain, sunlight,
etc.);
- the appliance power cable must not be replaced by the user;
- in the event of damage to the cable, switch
off the appliance and contact exclusively
qualied sta for replacement;
- if the appliance is not to be used for a certain
period, disconnect the main power switch.
N.B.: the temperatures shown on the display
have a tolerance of +/- 3°C due to environmental conditions that cannot be attributed to the
hydronic module.
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 CONTROL PANEL.
2-1
ESC OK
Key:
1 - Operating mode (winter - heating/air
conditioning - summer - stand-by - o)
and parameter conrm button
2 - Menu selection button
3 - Reset and exit menu button
4 - Domestic hot water temperature selec-
tion buttons
5 - Heating system temperature selection
buttons
6 - Hydronic module pressure gauge
7 - Remote control connection (optional)
8 - Condensing unit operation in progress
bar
9 - Not used
10 - Dispensed output level
11 - Operation with external temperature
probe active (optional)
12 - Connection to other Immergas units
13 - Room central heating mode active
14 - Temperature indicator, hydronic module
info and error codes
15 - Room cooling mode operation active
16 - Operation in cooling mode
17 - Operation in winter mode
18 - Operation in summer mode
19 - Stand-by mode
20 - Not used
21 - Hydronic module locked, requiring
release by "RESET" button
22 - Operation in dehumidication mode
23 - DHW production phase operating mode
active
14
2.4 SYSTEM USE.
Before ignition, make sure the system is full of
water, checking that the pressure gauge needle
(6) points to a value between 1 and 1.2 bar and
make sure that the chiller circuit has been lled
as described in the condensing unit instructions
booklet.
- Press the button (1) until the display switches
on. e system now goes back to the state prior
to switch-o.
- If the hydronic module is in stand-by, press the
button (1) again to activate it. Otherwise, go to
the next point.
- en press the button (1) in sequence and set
the system to summer ( ), winter ( ) or
heating/air conditioning ( ) position.
• Summer ( ): in this mode, the system only
works to produce domestic hot water, the
temperature is set using the buttons (4) and
the corresponding temperature is shown on
the display by the indicator (14).
Summer and DHW heating in
progress mode
• Winter ( ): in this mode, the system works
both to product domestic how water and room
central heating. e temperature of the DHW
is always regulated via buttons (4), the central
heating temperature is regulated via buttons
(5) and the relative temperature is shown on
the display by the indicator (14).
Winter and room central heating in
progress mode
• Heating/air conditioning ( ): in this mode,
the system works both to produce DHW and to
cool the room. e temperature of the DHW
is always regulated via buttons (4), the cooling
temperature is regulated via buttons (6) and the
relative temperature is shown on the display by
the indicator (14).
2-2
2-3
Heating/Air conditioning and room
cooling in progress mode
From here on, the system works automatically.
If there are no requests (room central heating,
DHW production or cooling), the system goes
into the "stand-by" function. Each time the
condensing unit ignites, the display shows the
corresponding symbol (8) with the corresponding power scale (10).
• Operation with Comando Amico RemotoV2
(CARV2) (Optional). If the CARV2 is connected,
the ( ) symbol will appear on the display.
e system regulation parameters can be set via
the CARV2 control panel and the reset button
(3) remains active on the hydronic module
control panel, along with the switch-o button
(1) (“o ” mode only) and the display showing
the functioning state.
e system is set up to manage two CARV2.
e CARV2 connected to the main zone (zone
2 or low temperature) is considered as the
hydronic module mount panel, while the
CARV2 connected to the secondary zone (zone
1 or high temperature) manages the requests
in the corresponding zone. Consequently, the
"secondary" CARV2 is not to be considered as
the hydronic module mount panel.
Attention: if the hydronic module is switched
“o” the CARV2 will display the connection
error symbol “ERR>CM”. e CARV2 is still
powered constantly so as not to lose the saved
programs.
•Operation with external probe ( ). e
system is set up to use the condensing unit
external probe or an optional external probe.
With the external probe connected, the system
ow temperature for room heating and air
conditioning is managed by the external probe
based on the outdoor temperature measured
(Parag. 1.9). You can change the ow temperature by choosing the oset value in the specic
user menu. If the CARV2 is connected, you can
change the operating curve using the controls
on it, selecting a value from "0 to 9" (See CARV2
instructions). In this case, any settings made
on the hydronic module will not aect system
operation.
• Dehumidify ( ). If the system is paired with
a humidistat (optional) or a humidity temperature sensor (optional), you can manage the
2-4
room humidity in summer air conditioning
mode.
- If paired with a humidistat, set the degree
of humidity on the humidistat itself (see the
instructions booklet).
- If paired with a humidity temperature sensor,
set the humidity percentage in the corresponding user menu or, if there is a CARV2,
you can set it on the remote control itself from
the "S UR %" parameter.
Heating/Air conditioning and
Dehumidication active mode
• In central heating or cooling request mode,
if the temperature of the water in the system
meets the request, the system can work simply
by activating the circulator.
• “Stand-by” mode. Press button (1) repeatedly
until the symbol ( ) appears. From then on,
the system remains inactive and the antifreeze
function, pump anti-block function and 3-way
and signalling of any anomalies is guaranteed.
N.B.: in these conditions the system must still
be considered powered.
• “O” mode. By holding the button (1) down
for 8 seconds, the display switches o and the
hydronic module is completely o. e safety
functions are not guaranteed in this mode.
N.B.: in these conditions, the hydronic module
must still be considered powered even if there
are no functions active.
• “Automatic vent” mode. Every time the
hydronic module is electrically powered, the
system automatic vent function is activated
(lasting 8 minutes). is function is displayed
via a countdown signalled by the indicator (14).
During this period the DHW and CH functions
are not active.
e “automatic vent” can be annulled by press-
ing the “reset” button (3).
• Display operation. e display lights up while
the control panel is being used; aer a set inactivity period, the brightness drops until only
the active symbols are displayed. e lighting
mode can be varied via parameter t8 in the
P.C.B. programming menu.
2-5
INSTALLERUSERMAINTENANCE TECHNICIAN
15
2.5 TROUBLESHOOTING.
e hydronic module signals any anomalies by
ashing a code on the display (14) according to
the following table.
Hydronic module error codes are preceded by
the letter "E", while error codes referring to
the condensing unit are preceded by the letter
"A". For the latter, refer to the condensing unit
booklet for the complete list of all the anomalies.
e CARV2 displays error codes with only the
last two digits (e.g. E184 = ERR 84).
INSTALLERUSERMAINTENANCE TECHNICIAN
Error
Code
E 2
E 5 Flow probe anomaly e board detects an anomaly on the ow NTC probe. e system does not start (1).
E 12
E 23 Return probe anomaly e board detects an anomaly on the return NTC probe e system does not start (1).
E 24
E 26
E 27 Insucient circulation
E 31
E 32
E 37
46
E 50
E 54
E 129
E 130
E177
E178
E179
(1) If the block or anomaly persists, contact an authorised company (e.g. Immergas Technical Aer-Sales Service).
Anomaly signalled Cause Hydronic module status / Solution
Safety thermostat
block (over-temperature)
Storage tank probe
anomaly
Push button control
panel anomaly
System owmeter
anomaly
Loss of communication with the CARV2
(zone 1)
Low temperature zone 2
probe anomaly
Low power supply
voltage
Low temperature safety
thermostat (optional)
External probe missing
or faulty
Central heating storage
tank probe anomaly
(optional)
Zone 1 humidity probe
anomaly
Zone 2 humidity probe
anomaly
DHW maximum time
alarm
Anti-Legionella cycle
not successful
Liquid phase probe
anomaly
During normal operation, if a fault causes excessive overheating
internally, the boiler goes into overheating block.
e board detects an anomaly on the storage tank probe
e board detects an anomaly on the pushbutton panel.
e board detects an anomaly on the system owmeter.
Return pump (optional) always working.
is happens when the hydronic module overheats due to poor water
circulation in the primary circuit. e causes can be:
- low system circulation; check that no shut-o devices are closed on
the central heating circuit and that the system is free of air (deaerated);
- pump blocked; free the pump.
is happens when an incompatible remote control is connected or
when communication between the hydronic module and CARV2 is lost.
If the board detects an anomaly on the low temperature zone 2 probe,
the system cannot work in the aected area.
is occurs when the power supply voltage is lower than the allowed
limits for correct system operation.
During normal operation, if an anomaly causes excessive overheating
of the ow temperature in the low temperature zone, the unit indicates
the malfunction.
In the event the external probe is not connected or is faulty, the
anomaly is indicated.
e central heating storage tank has an out of range resistive value Puer mode is disabled. (1)
Anomaly on the zone 1 humidity probe (optional). Zone humidity
cannot be checked.
Anomaly on the zone 2 humidity probe (optional). Zone humidity
cannot be checked.
Domestic hot water production is not met within the pre-established time
e anti-Legionella cycle is run without success within the pre-established time
e board detects an anomaly on the liquid phase NTC probe. e system does not start (1).
Press the Reset button (1)
e hydronic module is unable to produce domestic hot water (1).
If normal conditions are restored, the
system restarts without having to be reset
(1).
e system does not start (1).
Make sure the return pump (optional) only
activates when requested.
Press the Reset button (1).
Cut power to the hydronic module then
power it back on. If the Remote Control is
still not detected at restart, the system will
switch to local operating mode, i.e. using
the controls on the control panel. In this
case the “Central Heating” (1) mode cannot
be activated.
(1)
If normal conditions are restored, the system restarts without having to be reset (1)
e unit does not meet the zone central
heating requirement. (1)
Check the external probe connection.
e system continues to operate with the
external probe integrated in the condensing
unit (1).
In addition to the humidity, the dew point
is not calculated for the zone (1) either
In addition to the humidity, the dew point
is not calculated for the zone (1) either
e system continues to operate with
non-optimal performance (1)
(1)
16
Error
Code
E181
E182 Condensing unit alarm An anomaly appears on the condensing unit
E183
E184
E188
E189
(1) If the block or anomaly persists, contact an authorised company (e.g. Immergas Technical Aer-Sales Service).
Anomaly signalled Cause Hydronic module status / Solution
Cut power to the hydronic module then
Loss of communication with the CARV2
(zone 2)
Condensing unit in test
mode
Communication error
with condensing unit
Request with temperature out of range
Time out alarm with
communication board
is happens when an incompatible remote control is connected
or when communication between the hydronic module and second
zone CARV2 is lost.
A signal noties that the condensing unit is in test mode
A signal noties an anomaly due to a communication problem
between the hydronic module and the condensing unit.
A request is made with the outdoor temperature exceeding the
operating limits (parag. 1.12)
If communication between the printed circuit boards is lost, an
anomaly is signalled.
power it back on. If the Remote Control is
still not detected at restart, the system will
switch to local operating mode, i.e. using
the controls on the control panel. In this
case the “Central Heating” (1) mode cannot
be activated.
e system does not work, see the
anomaly on the condensing unit and its
instructions booklet (1)
During this time, room heating/air conditioning and domestic hot water production requirements cannot be met
Have the electrical connection between
the units checked.
e system does not start (1).
e system does not start (1).
(1)
INSTALLERUSERMAINTENANCE TECHNICIAN
17
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