Immergas CARV2 Product manual

CARV2
Modulating remote
control
IE
Instructions and
warning book

2
Dear Client,
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 efficiency of your "Remote
Control".
We would like to supply you with some important
indications, the respect of which will conrm your
satisfaction with the Immergas product:
• Read the following pages carefully: you will
obtain useful suggestions regarding the correct use
of the appliance.
• For any interventions or routine maintenance
contact "Authorised Aer-Sales centres": they
have original spare parts and specic preparation.

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INDEX Page
How to use the instruction book........................................................4
Foreword................................................................................................4
General recommendations..................................................................4
Case cleaning. .......................................................................................5
1. Installation..................................................................................6
1.1 Installation recommendations.......................................6
1.2 Installation operations....................................................6
2. Description of Controls. .........................................................10
3. Description of display..............................................................11
3.1 Back-lighting (function available in the pre-set
models)...........................................................................12
4. Start-up......................................................................................13
4.1 Programming current day and time...........................13
4.2 Selection of functioning mode....................................13
5. Summer mode functions........................................................16
5.1 DHW temperature setting. ..........................................16
5.2 DHW timer (for storage tank unit)............................16
6. Winter mode functions...........................................................17
6.1 Manual functioning. .....................................................17
6.2 Automatic functioning.................................................18
6.3 Forced automatic functioning.....................................18
6.4 Boiler ow temperature................................................19
6.5 Room anti-freeze function...........................................19
6.6 Functioning in winter mode with external tempera-
ture probe.......................................................................19
7. Cooling mode functions.........................................................20
7.1 Manual functioning. .....................................................20
7.2 Automatic functioning.................................................21
7.3 Forced automatic functioning.....................................21
7.4 Flow temperature. .........................................................22
8. Information. ............................................................................23
9. Programming CAR V2 remote control...................................24
9.1 Setting comfort and economy room temperature. ...24
9.2 Programming functioning time..................................25
10. Diagnostics and errors. ...........................................................27
10.1 Diagnostics.....................................................................27
10.2 Reset errors. ...................................................................27
10.3 Reset CAR V2 remote control. ......................................27
11. Special functions......................................................................28
11.1 LANG (language selection). ........................................28
11.2 REGULT (Management of regulation parameter)....28
11.3 HOLIDY (holiday program)........................................29
11.4 LEGION (anti-legionella function )...........................30
11.5 REMOTE (telephone control).....................................30
11.6 CODE. ............................................................................30
12. Functions protected by code (CODE). .................................31
12.1 AMB (room probe - On / O or modulating function-
ing mode).......................................................................31
12.2 REDUCT (functioning in reduced mode).................31
12.3 FRO PR (anti-freeze level). ..........................................32
12.4 ZONE (function not present on this model).............32
12.5 SERVIC (programmed maintenance). .......................32
13. Disabling the chrono-thermostat. .........................................32
14. Replace the batteries................................................................32
15. Disposal of the product at end of life....................................32
16. TECHNICAL FEATURES. ....................................................33
16.1 Product sheet.................................................................34
17. Factory setting..........................................................................35

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HOW TO USE THE INSTRUCTION BOOK.
e instruction book has been divided into 3 main parts:
in the rst, for the installer, the assembly and connection
phases of the remote control with the boiler are described;
in the second, all functioning program customisation phases
are described;
in the third and last part, all operations for displaying and
keeping system functioning under control are described.
FOREWORD.
e “Immergas” “CAR V2 modulating remote control has been
designed to guarantee ideal temperature conditions at any
time of the day and night for each individual day of the week.
Only a few minutes are required for installation: it is connected
to the boiler by just 2 cables, through which, it receives and
sends the adjustment and control commands and receives
the power supply. On completion of installation it is ready to
function thanks to the pre-set program inside. e customer
can modify the basic program according to requirements.
Programming of the "CAR V2" remote control is extremely easy
and a wide display allows constant control of all values set.
GENERAL RECOMMENDATIONS.
is manual has been drawn-up for: the Installer and the
User.
• Carefully read the warnings contained in this document
as they are required to indicate the use of the CAR V2
remote control envisioned by the design hypothesis,
the technical features, the installation, assembly,
programming, adjustment and use instructions.
• e system must be in compliance with the Standards in
force.
• e instruction manual must be considered a part of
the CAR V2 remote control and must be “kept for future
reference”.
• Aer having removed the packaging, check the integrity
of the CAR V2 remote control. If in doubt, do not use it
and contact the Dealer or Manufacturer.
• e CAR V2 remote control is destined only for the use
for which it has been expressly designed. Any other use
must be considered improper and therefore dangerous.
• Our products are realised in compliance with the Safety
Standards in force, it is therefore recommended to use all
those devices or attentions in a way that injury/damage
is not caused to persons or objects.

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• Do not remove parts of the CAR V2 remote control when
it is functioning.
• Do not use the CAR V2 remote control exposed to heat
sources or under the scorching sun.
• Periodically check the battery charge.
• e manufacture is relieved from any liability in the
following cases:
a) Incorrect installation.
b) Boiler functioning defects to which the Remote
Control is applied.
c) Unauthorised modications or interventions.
d) Total or partial failure to comply with instructions.
e) Exceptional events etc.
CASE CLEANING.
To clean the case of CAR V2 remote control use damp cloths.
Never use abrasive or powder detergents.
WARNING
Immergas reserves the right to make improvements and
modifications to details and accessories, excepting the
essential features of the model described and illustrated
herein.

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OK
1,5m
NO
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1. INSTALLATION.
1.1 Installation recommendations.
e CAR V2 remote control, including the relative cables and
connections to the boiler, must be installed by specialised
sta. On the initial check of the boiler, when the CAR V2
remote control is inserted into the system, the authorised
aer-sales centre checks the connection to the generator
terminal board and adjusts functioning.
Important: laying of the CAR V2 remote control cables is
excluded from the boiler checks; it is the responsibility of
the installer company.
1.2 Installation operations.
1) Separate the xing template from the body of the CAR
V2 remote control using a screwdriver as a lever in the
relevant recess (Fig. 3). Install the CAR V2 remote control
away from heat sources and in a suitable position to detect
the room temperature correctly (Fig. 1 and 2).
Note:
the presence on the rear of the remote control of the
pipe for electric connection cables with the boiler could
recall air from outside the establishment and interfere with
the correct detection of the room temperature (e.g.: boiler
installed outside and use of the suction hood in the kitchen).
Have the job carried out by qualied sta.
2) Install the CAR V2 remote control using the holes made
in the rear of the same directly onto the wall (Fig. 4) or
on a recess box (Fig. 5) using the relative supplied screws.

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1
2
33
4
5
3
Important: the xing screws (action n° 3) on rst
installation are no present on the CAR V2 remote
control, but are supplied in a bag present in the
packaging box.
Once the template is xed to the wall, x the body of
the CAR V2 remote control using the 2 screws.

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3) To make the electrical connections (Fig. 4) do not operate
when the boiler is live. The connection must be made
respecting the polarity of the conductors (+ and -),
connecting the CAR V2 to the boiler clamps envisioned at
communication with the CAR or, if not present, to the clamps
envisioned for the CRD.
Connect the CAR V2 remote control to the boiler clamps
envisioned at communication with the CAR remote
control or, if not present, to the clamps envisioned for
the CRD.
Note: refer to the electrical connections stated in the
boiler instruction book.
e connection to the boiler is made using two wires (Fig.
5) with minimum section of 0.50 mm2and maximum of
1.5 mm2and with maximum length of 50 metres.
N.B: for correct installation prepare a dedicated line for
the connection of the CAR V2 remote control according
to the Standards in force regarding electrical systems.
If this is not possible interference due to other electric
cables could cause malfunctioning of the CAR V2 remote
control itself.
4) Fix the body of the CAR V2 remote control to the support
template, engaging it with pressure and using the two
screws provided (Fig. 3).
5) Insert 2 1.5 V AA batteries (not supplied) into the pre-set
housing (Fig. 3) and close the battery compartment.
6) Aer the boiler has been powered, wait about 30 seconds
before regulation in a way that the communication betwe-
en CAR V2 remote control and boiler has established.

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Telephone control
(optional)
Boiler
CAR
V2
4
5

10
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2. DESCRIPTION OF CONTROLS. Ref. Description
1Main selector: Off, Stand-by/anti-freeze,
Summer, Winter, Cooling
2“Reset” boiler anomalies/“Esc” escape
parameter or return to previous menu button
(programming mode)
3Comfort and economy room temperature
setting button
4Reset button for starting CAR V2 remote
control in event of anomaly of the same.
5Access button to time, day and timer
6Access button to the programming/conrm
parameters menu
7Domestic hot water temperature selector
switch
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- Central heating temperature selector (wi-
thout external temperature probe)
- “OTC” value selector (with external tempe-
rature probe) (*)
9Information buttons
10 Manual, automatic functioning button
11 Temperature decrease button
12 Temperature increase button
(*) e “OTC” value shown on the display coincides with
the selected curve (see Fig. 23) for calculating the maximum
central heating set point.

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3. DESCRIPTION OF DISPLAY.
Symbol Description
winter - DHW heating and
room central heating buttons are
enabled
summer - only the DHW central
heating function is enabled
cooling - the cooling and DHW
central heating function is
enabled
request for room central heating
or cooling by CAR V2 remote
control
aqua celeris active/DHW
comfort in progress
request for DHW in progress
room central heating in progress
description of functioning of the
button (2, Fig. 6) - Reset, or esc
displays room temperature and
numerical data
Symbol Description
external temperature display
internal temperature display
function activation from remote
functioning with holiday timer
program
batteries at
description of functioning state
in use
anomaly in boiler presence
symbol
indicates that it is possible to
modify a parameter via the two
buttons (11 and 12 Fig. 6)
functioning with solar system
active
functioning with external
temperature probe active
functioning in wireless mode
(not used on this model)

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Symbol Description
description of functioning of the
button (6, Fig. 6) - Menu or Ok
ame presence symbol (only
appears with the connection to
some boiler models)
symbols that identify the
functioning mode in the hourly
programming
time bar that identies the
functioning period at “comfort”
and “economy” temperature
on the basis of the type of
programming (cooling, central
heating, DHW)
functioning with automatic
program
functioning with manual
program
display of days of the week
N.B.: Some icons can assume dierent meanings according
to the context, see the successive paragraphs to identify the
functions activated by the presence of several icons at the
same time.
3.1 Back-lighting (function available in the pre-set
models).
By pressing any button the display lightens for a set time. If
the batteries are present and charged the function is always
active, in case the batteries are absent or run-down the well-
functioning of the appliance is not compromised.
N.B.: CARV2, standard model equipped with boiler does not
have backlighting function.

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4.2 Selection of functioning mode.
According to the functioning mode selected, the CAR V2
remote control performs the requests of the user, displaying
the results on the display.
By turning the main selector (1, Fig. 6) the following
functions can be selected: Stand-by/Anti-freeze, Summer,
Winter, Cooling.
Note: the room anti-freeze function is active in the following
modes: antifreeze, summer, winter.
• Off mode. The room anti-freeze function is not
guaranteed in this mode (the boiler anti-freeze function
remains active). e CAR V2 remote control is o but
remains powered and therefore the times and programs
remain memorised.
4. STARTUP.
4.1 Programming current day and time.
Switch the remote control on by turning the main selector
onto one of the functions available.
Press the button to enter time and current time
mode and press the button to modify the settings.
On entering the programming mode, the time starts to ash.
Modify the hour and minutes by pressing the + / - buttons
and the button to conrm. Select the day of the week
and conrm using the button.
Once regulation has been completed, press the button
to escape the regulation mode.

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• Stand-by/anti-freeze mode ( ). In this mode, the boiler
can only function in the event of anti-freeze request.
In this state, the day, current time, any functioning
anomalies and the room temperature are displayed (Fig.
8).
• Summer mode ( ). In this mode the boiler is enabled
for producing domestic hot water excluding heating the
environment. e display shows the day and the current
time, the room temperature and hour bar with daily
programming of the DHW timer along with the relative
symbols (Fig. 9).
• Winter mode ( ). In winter mode the boiler is enabled
for producing domestic hot water and for central heating
the environment. In winter mode the CAR V2 remote
control can function in automatic or manual mode. For
the description of functioning see chapter 6. e display
shows the day and current time, the room temperature
and the hour bar with the daily programming of the
central heating timer along with the relative symbols (Fig.
10).

15
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• Cooling mode ( ). In cooling mode the boiler is enabled
for the production of DHW and to control an external
motocondensing (only for models set-up) for cooling
rooms. In "cooling" mode the CAR V2 remote control
can function in automatic or manual mode. For the
description of functioning see chapter 7. e display
shows the day and current time, the room temperature
and the hour bar with the daily programming of the
cooling timer along with the relative symbols (Fig. 11).

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5. SUMMER MODE FUNCTIONS.
With the CAR V2 remote control in summer mode ( ), only
the production of DHW is enabled.
The boiler produces hot water according to the DHW
temperature set on the CAR V2 remote control.
5.1 DHW temperature setting.
By turning the selector ( ) it is possible to set the
temperature of the DHW (see Fig. 12).
By turning in a clockwise direction the temperature
increases and in an anti-clockwise direction it decreases.
e temperature is memorised aer the selector remains
still for a few seconds.
5.2 DHW timer (for storage tank unit).
If the temperature of the DHW contained in the DHW
storage tank on two distinct levels (comfort and minimum)
is to be regulated, this is possible using the “HW PRG”
function. Regarding this, see the activation mode in the
chapter relative to programming.
The “comfort” temperature corresponds to the value
regulated on the DHW selector. e “minimum” temperature
corresponds to the minimum DHW value envisioned for the
boiler to which the CAR V2 remote control is coupled.
N.B.: if the CAR V2 remote control is functioning at
minimum temperature level it is possible to force the DHW
temperature by acting on the DHW selector.
e CAR V2 remote control is factory set with the DHW
always activated on "comfort" temperature (ON1 00.00
OFF1 24.00).
N.B.: the sanitary timer can also be used to set the time
bands of the device “Aqua celeris” and “recirculation
tank” if provided in in the boiler and depending on the
communication protocol used.

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13
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6. WINTER MODE FUNCTIONS.
With the CAR V2 remote control in winter mode ( ),
the production of DHW and room central heating are
enabled. Two main functioning modes can be selected for
room central heating: automatic or manual. Plus a forced
automatic timed program.
- Manual ( ): the room temperature is kept constant
at the value set by the user every time, according to
requirements.
- Automatic ( ): the room temperature is regulated on
two levels (comfort and economy) during the day via a
program set by the user.
- Forced automatic ( ashing): the room temperature
is modified momentarily with respect to automatic
functioning until the successive passage between comfort
and energy mode of the automatic program set.
6.1 Manual functioning.
By pressing the button, pass alternately from
automatic to manual functioning.
Once manual functioning mode is set, the icon switches-
on on the display (Fig. 13).
To set the desired room temperature, just press the + / -
buttons and the room temperature set will appear on the
display (Fig. 14). Just wait a few seconds to conrm the
new value.
In manual functioning mode it is possible to select any
room temperature from +10°C to +35°C, which will be kept
constant until new adjustments or selection of a dierent
functioning mode.

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15
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6.2 Automatic functioning.
The CAR V2 allows automatic functioning, in which a
program manages the room temperature during the hours
of the day.
e desired room temperature can be adjusted onto two
independent levels: comfort ( ) and economy ( ) via the
button, whose distribution throughout the day or the
week is managed by hourly programming.
Press the button until the icon switches-on on
the display .
e CAR V2 is factory-set with a standard program stated in
the table that follows. If this should not satisfy requirements,
it is possible to modify it as described in the chapter relative
to programming.
Note: the system is designed to function on comfort and
economy temperature levels depending on the hour program
set. erefore also during functioning on economy level,
if the room temperature measured is below that set, the
boiler can ignite.
6.3 Forced automatic functioning.
If in automatic functioning mode ( ) the room temperature
is modied by pressing the + / - buttons, the forced automatic
functioning mode is activated (displayed by the switch-on of
the ashing symbol). In this mode, the room temperature
will be regulated to the value set until the next switch-on or
switch-o phase of the automatic program set. e forced
automatic function can be interrupted by simply pressing
the button.
Days 16°C 20°C
Mon - Fri
(Day 1 - 5)
from 23 to 6
from 8 to 11
from 13 to 17
from 6 to 8
from 11 to 13
from 17 to 23
Sat - Sun
(Day 6 -7) from 23 to 7 from 7 to 23

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6.4 Boiler ow temperature.
From the winter function mode ( ) it is possible to regulate
the maximum boiler ow temperature. Regulate by rotating
the selector ( ), clockwise to increase the maximum ow
temperature and anti-clockwise to decrease it.
N.B.: during regulation, without the external temperature
probe installed, the display shows “S. RIS” and the maxi-
mum ow temperature set value. On the other hand, with
the external temperature probe installed, the display shows
“OTC” and the indication of the correlation value of the
maximum central heating ow temperature according to
the external temperature (see Fig. 23).
e boiler ow temperature during normal functioning
is however managed automatically of the CAR V2 remote
control on the basis of the room temperature set. erefore,
it is not certain that the boiler works at the temperature set
but functions at a lower ow temperature, but correct to
obtain the desired room temperature.
If the external temperature probe is present, the flow
temperature will be set according to that described in the
"Special functions" chapter.
6.5 Room anti-freeze function.
The anti-freeze function has maximum priority with
respect to other settings. When the room temperature
drops below 5°C (adjustable, see special functions chapter)
a central heating request is made at minimum of the power
programmed. is situation remains active until there is
a variation in room temperature of 0.6°C equal to 5.6°C
measured in the room where the CAR V2 remote control
is positioned.
6.6 Functioning in winter mode with external
temperature probe.
If an external temperature probe is present, it is possible to
set a ow temperature correction curve depending on the
external temperature. By turning the selector switch ( )
the curve can be regulated from 0 to 9 according to the
graphics Fig. 23. Regarding this, see the activation mode in
the chapter relative to the special functions.

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7. COOLING MODE FUNCTIONS.
With the CAR V2 remote control in cooling mode ( ), the
of DHW heating and room cooling functions are enabled.
Attention: this function can only be used with Immergas
appliances that manage the cooling mode.
Two main functioning modes can be selected: automatic or
manual. Plus a forced automatic timed program.
- Manual ( ): the room temperature is kept constant
at the value set by the user every time, according to
requirements.
- Automatic ( ): the room temperature is regulated on
two levels (comfort and economy) during the day via a
program set by the user.
- Forced automatic ( ashing): the room temperature is
modied momentarilywith respect toautomaticfunctioning
until the successive passage between comfort and energy
mode of the automatic program set.
7.1 Manual functioning.
By pressing the button, pass alternately from
automatic to manual functioning.
Once manual functioning mode is set, the icon switches
on on the display (Fig. 17).
To set the desired room temperature, just press the + / -
buttons and the room temperature set will appear on the
display (Fig. 18). Just wait a few seconds to conrm the
new value.
In manual functioning mode it is possible to select any
room temperature from +15°C to +40°C, which will be kept
constant until new adjustments or selection of a dierent
functioning mode.