Immergas MAGIS COMBO PLUS 5 Product manual

MAGIS COMBO
PLUS
5 - 8 - 10
Hybrid heat pumps
IE
Instructions and warnings
Installer
User
Maintenance technician
*1.040375ENG*

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 prior notice.
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 product. Read the following pages carefully:
you will be able to draw useful suggestions regarding the correct use of the appliance. By respecting these suggestions, you will no doubt be satised with your
Immergas product.
For any assistance and scheduled maintenance please contact Authorised Aer-Sales centres: they have original spare parts and are specically trained by the
manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
e material must be stored in a dry place protected from the 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 product installation (e.g. safety
in the work site, environment protection, injury prevention), it is necessary to comply with the provisions specied in the regulations in force and 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 an authorised company,
which has specic technical expertise in the system sector, as required by Law.
Improper installation or assembly of the appliance and/or Immergas components, accessories, kit and devices can cause unexpected problems to people, animals
and objects. Read the instructions provided with the product carefully to ensure proper installation.
Maintenance must be carried out by an authorised company. e Authorised Aer-sales Service represents a guarantee of qualication 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, manufacturing 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
USER......................................................... pageINSTALLER............................................. page MAINTENANCE TECHNICIAN........ page
1 Installing the indoor unit...........................4
1.1 Installation recommendations. .................4
1.2 Main dimensions ........................................5
1.3 Antifreeze protection. ................................5
1.4 Connection group....................................... 6
1.5 Hydraulic connection.................................6
1.6 Connecting the chiller line........................7
1.7 Electrical connection. ................................7
1.8 Remote controls and room chrono-
thermostats (optional). ..............................9
1.9 External temperature probe. .....................9
1.10Heat regulation setting.............................10
1.11Immergas ue systems.............................11
1.12Tables of resistance factors and equivalent
lengths........................................................11
1.13Outdoor installation in partially protected
area..............................................................13
1.14Concentric horizontal kit installation....14
1.15Concentric vertical kit installation.........15
1.16Separator kit installation..........................16
1.17Adaptor c9 kit installation. .....................17
1.18Ducting of ues or technical slots. .........18
1.19Conguration type b, open chamber and
fan assisted for indoors. ...........................18
1.20Flue exhaust to ue/chimney. .................18
1.21Flues, chimneys, chimney pots and
terminals....................................................19
1.22Filling the system......................................19
1.23Filling the condensate drain trap............19
1.24Gas system commissioning. ....................19
1.25Operating limits in heat pump mode.....19
1.26Heat generator commissioning (ignition,
only coupled with a condensing unit)....20
1.27Circulation pump......................................21
1.28Indoor unit components..........................22
1.29Kits available on request. .........................22
2 Use and maintenance instructions.........23
2.1 Cleaning and maintenance......................23
2.2 General warnings......................................23
2.3 Control panel.............................................23
2.4 System use..................................................24
2.5 Fault and anomaly signals. ......................26
2.6 Parameters and information menu. .......29
2.7 Indoor unit shutdown. .............................30
2.8 Restore central heating system pressure 30
2.9 Draining the system. ................................30
2.10Antifreeze protection. ..............................30
2.11Case cleaning.............................................30
2.12Decommissioning.....................................30
3 Magis combo plus 5 - 8 - 10 start-up
(initial check) ............................................31
3.1 Hydraulic diagram....................................31
3.2 Wiring diagram.........................................32
3.3 System lter. ..............................................35
3.4 Troubleshooting........................................35
3.5 Gas valve. ...................................................36
3.6 Converting the heat generator to other
types of gas.................................................36
3.7 Calibration of number of fan revs. .........36
3.8 Adjustment of the air-gas ratio. ..............36
3.9 Checks following conversion to another
type of gas..................................................36
3.10Programming the p.C.B...........................37
3.11“Chimney sweep” function......................41
3.12Pump anti-lock function. ........................41
3.133-Way anti-lock function.........................41
3.14Radiators antifreeze function..................41
3.15Solar function............................................41
3.16Outdoor unit disable function................41
3.17Preheating function..................................41
3.18Diverter valve management
(summer / winter). ...................................41
3.19Automatic vent function..........................42
3.20Screed heater function. ............................42
3.21Dehumidication function......................42
3.22Audax pro testmode function.................42
3.23Generators management..........................42
3.24Yearly appliance check and maintenance. ..
...............................................................43
3.25Casing removal. ........................................44
3.26Condensate trap siphon disassembly. ....45
3.27Technical data. ..........................................46
3.28Combustion parameters. .........................47
3.29Product che (in compliance with
regulation 811/2013)................................48
3.30Parameters for lling the package che. 54

4
1
INSTALLERUSERMAINTENANCE TECHNICIAN
1INSTALLING THE INDOOR UNIT
1.1 INSTALLATION
RECOMMENDATIONS.
e Magis Combo Plus indoor unit 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 the indoor and outdoor units must be
respected.
e place of installation of the two units and
relative Immergas accessories must have suitable
features (technical and structural), such as to al-
low for (always in safe, ecient and comfortable
conditions):
- installation (according to the provisions of
technical legislation and technical regulations);
- maintenance operations (including scheduled,
periodic, routine, special);
- removal (to outdoors in the place for loading
and transporting the appliances and com-
ponents) as well as the eventual replacement
of those 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).
By varying the type of installation the classi-
cation of the indoor unit also varies, precisely:
- Type B23 B53 if installed using the relevant
terminal for air intake directly from the room
in which the indoor unit has been installed.
- Type C if installed using concentric pipes or
other types of pipes envisioned for the sealed
chamber indoor units for intake of air and
expulsion of ue gas.
Only professionally enabled companies are
authorised to install Immergas gas appliances.
Installation must be carried out according to
regulation standards, current legislation and in
compliance with local technical regulations and
the required technical procedures.
Attention: the manufacturer declines all liability
in the event of damage caused by appliances
removed from other systems or for any non-con-
formities with such equipment.
Before installing the indoor unit, ensure that it is
delivered in perfect condition; if in doubt, contact
the supplier immediately. Packing materials (sta-
ples, nails, plastic bags, polystyrene foam, etc.)
constitute a hazard and must be kept out of the
reach of children.
If the appliance is installed inside or between
cabinets, ensure sucient space for normal ser-
vicing; therefore it is advisable to leave clearance
of at least 30 cm on the right and a clearance on
the le of at least 3 cm between the casing of the
indoor unit and the vertical sides of the cabinet.
Leave adequate space above the indoor unit for
possible water and ue removal connections.
Keep all ammable objects away from the ap-
pliance (paper, rags, plastic, polystyrene, etc.).
Do not put household appliances under the
indoor unit as they could be damaged if the
safety valve trips or if the hydraulic ttings leak.
Otherwise, the manufacturer cannot be held lia-
ble for any damage to the household appliances.
For the aforementioned reasons, we recommend
not placing furnishings, furniture, etc. under the
indoor unit.
In the event of malfunctions, faults or incorrect
operation, turn the appliance 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.
• Installation Standards:
- this indoor unit can be installed outdoors in a
partially protected area. A partially protected
area is one in which the indoor unit is not
exposed to the direct action of the weather
(rain, snow, hail, etc..).
NOTE: this type of installation is only possible
when permitted by the laws in force in the
appliance's country of destination.
- Installation of gas appliances, ue exhaust
pipes and combustion air intake pipes is
forbidden in places with a re risk (for ex-
ample: garages, closed parking stalls), and
in potentially dangerous places.
- Installation is prohibited on the vertical
projection of the cooking surface.
- Installation is forbidden in places/rooms
that constitute public areas of apartment
buildings, internal stairways or other escape
routes (e.g. oor landings, entrance halls,
etc.).
- Installation is also forbidden in places/rooms
that constitute public areas of apartment
buildings such as cellars, entrance halls, attics,
los, etc., unless otherwise provided for by
local regulations in force.
Attention: wall mounting of the indoor unit
must guarantee stable and ecient support for
the generator.
e dowels (standard supplied with the unit) must
only be used to secure the unit to the wall; they can
only ensure sucient 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 mount.
This product is used to heat water to below
boiling temperature in atmospheric pressure.
It must be connected to a central heating system
and domestic hot water circuit suited to its per-
formance and capacity.
Attention:e storage tank unit must also be
installed in an environment in which the tem-
perature cannot fall below 0°C.
"Anti-legionella" heat treatment of the Immergas
storage tank (activated by the specic function
present on the predisposed thermoregulatory
systems): during this stage, the temperature of
the water inside the storage tank exceeds 60°C
with a relative 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.
YES NO

5
2
INSTALLERUSERMAINTENANCE TECHNICIAN
1.2 MAIN DIMENSIONS
Key:
V - Electrical connection
G - Gas supply
LP - Chiller line - liquid phase
GP - Chiller line - gaseous phase
RU - Storage tank unit return
MU - Storage tank unit ow
RR - System lling
SC - Condensate drain (minimum
internal diameter Ø 13 mm)
R - System return
M - System ow
Height
(mm)
Width
(mm)
Depth
(mm)
787 440 400
CONNECTIONS
CHILLER
LINE GAS DOMESTIC HOT WATER SYSTEM
LP GP G RR R - M MU - RU
G 3/8” G 5/8” 3/4” 1/2” 3/4” 3/4"
1.3 ANTIFREEZE PROTECTION.
Minimum temperature -5°C. e indoor unit
comes standard with an anti-freeze function
that activates the condensing unit and the heat
generator when the temperature of the water
inside of it falls below 4°C.
In these conditions, the indoor unit is protected
against freezing up to an ambient temperature
of -5°C.
Minimum temperature -15°C.If the indoor
unit is installed in a place where the temperature
drops below -5°C, the appliance can freeze.
To prevent the risk of freezing follow the instruc-
tions 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 manu-
facturer 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 in-
structions of the manufacturer of this liquid
must be followed scrupulously regarding the
percentage necessary with respect to the min-
imum temperature at which the system must
be kept. An aqueous solution must be made
with potential pollution class of water 2 (EN
1717:2002 or local standards in force).
Warning: the excessive use of glycol could jeop-
ardise the proper functioning of the appliance.
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 wiring
and a control thermostat (carefully read the
installation instructions contained in the ac-
cessory kit pack).
In these conditions, the indoor unit is protected
against freezing up to a temperature of -15°C.
Indoor unit anti-freeze protection (both -5°C and
-15°C) is only ensured if:
- e indoor unit and the condensing unit are
properly connected to each other and to the
electrical supply voltage circuits;
- e units are continuously powered;
- the units are not in "o" mode.
- the units are not in anomaly (Para. 2.5);
- the unit and/or kit essential components are not
faulty.
e warranty does not cover damage due to inter-
ruption of the electrical power supply and failure
to comply with that stated on the previous page.
N.B.: if the unit is installed indoors, where the
temperature drops below 0°C, both the DHW
and central heating connection pipes must be
insulated.
e water in the storage tank unit is not protected
against freezing when the boiler is switched o.