Immergas CRONO 7 Product manual

CRONO 7
Weekly digital
chronothermostat
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 "Chrono-
thermostat".
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 "Immergas Authorised Centres": they
have original spare parts and specic preparation.
DECLARATION OF CONFORMITY
For the purpose and eect of the 2006/95/CE Low Voltage
Directive, 2004/108/CE EMC Directive.
e Manufacturer: Immergas S.p.A. v. Cisa Ligure n° 95
42041 Brescello (RE)
DECLARES THAT: e Immergas chronothermostat:
CRONO 7 Wireless
is in compliance with the same European Community
Directives
Mauro Guareschi
Research & Development Director
Signature:

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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........................................................ 9
3. Description of display.........................................................10
3.1 Back-lighting. ............................................................11
4. Start-up .................................................................................12
4.1 Programming current day and time.......................12
4.2 Selection of functioning mode................................12
5. Winter mode functions.......................................................14
5.1 Manual functioning. .................................................14
5.2 Automatic functioning. ............................................15
5.3 Forced automatic functioning.................................15
5.4 Room anti-freeze function.......................................16
6. Chiller control mode functions.........................................17
6.1 Manual functioning. .................................................17
6.2 Automatic functioning. ............................................18
6.3 Forced automatic functioning.................................18
7. CRONO 7 programming....................................................19
7.1 Setting comfort and economy room temperature.19
7.2 Programming functioning time..............................20
8. Diagnostics and errors........................................................21
8.1 Errors..........................................................................21
9. Special functions..................................................................22
9.1 INFORMATION.......................................................22
9.2 LANGUAGE (language selection)..........................22
9.3 CHILLER. ..................................................................22
9.4 REGOLAZ (Management of regulation parame-
ter)...............................................................................22
9.5 VACANZ (holiday program)...................................23
9.6 REMOTE (telephone control).................................23
9.7 CODE. ........................................................................23
9.8 Reset of CRONO 7....................................................23
10. Functions protected by code (CODE)..............................24
10.1 AMB (room probe - On / O or Modulating
functioning mode)....................................................24
10.2 ANTIGL (anti-freeze level)......................................24
10.3 MANUTZ (programmed maintenance)................24
10.4 HYSTERESIS .............................................................25
11. Replace the batteries. ..........................................................25
12. Technical characteristics.....................................................26
12.1 Product specications. .............................................26
13. Factory setting .....................................................................27

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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 “CRONO 7” (Digital weekly chrono-thermostat) 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: is in fact,
connected to the appliance with only 2 cables, through which
performs the required air-conditioning. It is powered by 2
“AA” batteries. 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 “CRONO 7” 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 CRONO
7 envisioned by the design hypothesis, the technical
features, the installation, assembly, programming,
adjustment and use instructions.
• e system must be in compliance with the IEC Standards
in force.
• e instruction manual must be considered a part of the
CRONO 7 and must be “kept for future reference”.
• Aer having removed the packaging, check the integrity
of the CRONO 7. If in doubt, do not use it and contact
the Dealer or Manufacturer.
• e CRONO 7 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 CRONO 7 when it is
functioning.
• Do not use the CRONO 7 exposed to heat sources or
under the scorching sun.
• Periodically check the batteries in case of dead batteries
can run the risk of a permanent request at the appliance
until the next replacement of the batteries.
• e manufacture is relieved from any liability in the
following cases:
a) Incorrect installation.
b) Boiler functioning defects to which the chrono-
thermostat 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 CRONO 7 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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1. INSTALLATION
1.1 Installation recommendations.
e CRONO 7, including the relative cables and connections
to the boiler, must be installed by specialised sta. On the free
initial check of the boiler, when the CRONO 7 is inserted
into the system, the Immergas authorised aer-sales centre
checks the connection to the generator terminal board and
adjusts functioning. e free check just of the CRONO 7 is not
envisioned by the Immergas authorised aer-sales centre if
requested successively to the start phase of the boiler warranty.
Important: laying of the CRONO 7 base cables is excluded
from the free boiler checks; it is the responsibility of the installer
company.
Attention: in order for the chrono-thermostat to operate
correctly you must select winter mode on the control panel
of the boiler.
1.2 Installation operations.
1) Separate the xing template from the body of the CRONO
7 using a screwdriver as a lever in the relevant recess (g.
3). Install the CRONO 7 away from heat sources and in a
suitable position to detect the room temperature correctly
(g. 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 CRONO 7 using the holes made in the rear of
the same directly onto the wall or on a recess box using
the relative supplied screws.
Fig. 2
Fig. 1
OK
1,5m
NO

7
Fig. 3
4
3
1
2
3
5Important: the xing screws (action n° 3) on rst
installation are not present on the CRONO 7, but are
supplied in a bag present in the packaging box.
Once the template is xed to the wall, x the body of
the CRONO 7 using the 2 screws.

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3) To make the electrical connections (g. 4) do not operate
when the boiler is live. e connection must be made at
the clamps envisioned for the connection to the room
thermostat.
e jumper on clamps 40 and 41 of the boiler
P.C.B. (if present) must also be eliminated.
Note: refer to the electrical connections stated in the boiler
instruction book.
e connection to the boiler is made using two wires (g.
5) with minimum section of 0.50 mm2and maximum of
1.5 mm2.
N.B: for correct installation prepare a dedicated line
for the connection of the CRONO 7 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 CRONO 7 remote control itself.
4) Insert 2 1.5V AA batteries (not supplied) into the relevant
housing (g. 3).
5) Fix the body of the CRONO 7 remote control to the support
template, engaging it with pressure and using the two screws
provided (Fig. 3).
Fig. 5
Fig. 4
CRONO 7
Telephone control
(optional)
BOILER
Connect the CRONO 7 to the boiler
clamps envisioned at the connection
with the room thermostat (see boiler
instruction book).
ere is no need to respect
the polarity of the connection
between CRONO 7 and boiler.

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2. DESCRIPTION OF CONTROLS
Fig. 6
Ref. Description
1“Reset”/“Esc” escape parameter or return to
previous menu button (programming mode)
2Comfort and economy room temperature
setting button
3Reset button for restarting CRONO 7 in
event of anomaly of the same.
4 Access button to time, day and timer
5Access button to the programming/conrm
parameters menu
6General selection button: O, Stand-by/anti-
freeze, Winter
7 Manual, automatic functioning button
8 Temperature decrease button
9 Temperature increase button

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3. DESCRIPTION OF DISPLAY
Symbol Description
Winter - room central heating
functions are enabled
Cooling - the cooling function
is enabled
Request for room central heating
or cooling from CRONO 7
Description of functioning of the
button (1 g. 6) - Reset, or esc
Displays room temperature and
numerical data
Internal temperature display
Function activation from remote
Functioning with holiday timer
program
Batteries at
Symbol Description
Description of functioning state
in use
CRONO 7 anomaly presence
symbol
Indicates that it is possible to
modify a parameter via the two
buttons (8 and 9 g. 6)
Description of functioning of the
button (5 g. 6) - Menu or Ok
Symbols that identify the
functioning mode in the hourly
programming*
Time bar that identies the func-
tioning period at “comfort” and
“economy” temperature on the
basis of the type of programming
(cooling, central heating)
Functioning with automatic
program.