AVE CRONOTC1B User manual

International Trademark registration n° 327040 - 942905 - 330600
Instructions for Use
Touchscreen chronothermostat - battery power supplied
CRONOTC1B / CRONOTC2B / CRONOTC3B

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Index
Introduction ...........................................................................................3
Controls and Indications ........................................................................4
Controls .................................................................................................4
Indications ..............................................................................................5
User manual............................................................................................6
Setting the date and time ........................................................................6
Summer/Winter selection ........................................................................7
Operating modes.....................................................................................7
“Manual” operating mode .......................................................................7
“Automatic” operating mode ...................................................................8
“Holiday” operating mode ........................................................................9
“Jolly” operating mode ............................................................................9
“OFF” function ........................................................................................10
Winter operation .................................................................................... 11
Summer operation.................................................................................. 11
Preset programs .....................................................................................12
Chronothermostat programming ..............................................................12
Preset parameter reset ............................................................................13
Displaying the temperature detected by the separate probe ......................13
Statistical data .......................................................................................14
Maintenance ..........................................................................................15
Keyboard lock ........................................................................................15
Touch Screen .........................................................................................15
Batteries replacement..............................................................................15
Installation .............................................................................................16
Base fastening .......................................................................................16
Electric connections ................................................................................17
Batteries fitting .......................................................................................18
Fastening the chronothermostat onto the base .........................................18
Chronothermostat configuration ...............................................................18
Technical data ........................................................................................22

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Introduction
Chronothermostat CRONOTC...B is suitable to measure the ambient temperature
and to control the heating and air conditioning system to which it is connected.
The operating mode can be chosen between the preset ones or can be customized
according to user’s needs.
The wide display shows the temperature profile - i.e.: the relationship between the time
table and the temperature to be kept -, as well as the measured temperature, relative
humidity, calculated perceived temperature, time and day of the week.
NOTE Temperature perceived is calculated according to the following formula:
Where “H” is the perceived temperature, “T” is the effective air temperature.
Values in brackets represent the empirical calculation of the air steam partial
pressure (according to the relative humidity).
The chronothermostat is battery powered. Both settings and data are stored in a non-
volatile memory capable of retaining them even when batteries are down.
It it possible to connect the chronothermostat to an external floor temperature
probe (AVE p.n 53GA91-T).
Chronothermostat is available in the following colours:
• "Domus RAL 9010" white (p.n. CRONOTC1B)
• "Life" black (p.n. CRONOTC2B)
• "Allumia" grey (p.n. CRONOTC3B)

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Controls and indications
Controls
1. Button used to select the “Manual” operating mode or increase a value (▲) *
2. Button used to select the “Automatic” operating mode or decrease a value
(▼) *
3. Button used to select the “Holiday” operating mode or go back to the previous
data item (◄) *
4. Button used to select the “Jolly” operating mode or go to the next data item
(►) *
5. Button used for the “OFF” or “Enter” functions *
6. Button used for the “Programming” or “Copy” or “Statistical data displaying”
functions *
7. Rotary selector for temperature correction: T1, Manual temperature, Jolly
temperature, and antifreeze temperature *
8. Rotary selector for correcting temperature T2 or the Jolly duration * operating
mode
9. Rotary selector for correcting temperature T3 or the Jolly duration * operating
mode
10. Summer/Winter switching key and keyboard lock
11. Chronothermostat reset button
12. Backlighted area
* The function associated with the button or selector depends on the current
operating mode. It is highlighted by the icon placed above.
1 2 3 4 5 6

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Indications
14 1 2 15 3 4 5
13 12 11 10 9 8 7 6
1. Time
2. Temperature profile
3. Temperature value T1 or “Jolly” operating mode duration (days)
4. Temperature value T2 or “Jolly” operating mode duration (hours)
5. Temperature value T3
6. System ON in Summer operation
7. System ON in Winter operation
8. Relative humidity percentage
9. Perceived temperature (displayed by the degree)
10. Ambient/external temperature
11. Current day (1 = Monday … 7 = Sunday; 8 = Holiday)
12. Winter operation
13. Summer operation
14. Battery charge level
15. keyboard lock
Note: pressing of a key is signalled by a short acoustic signal.
When ON blue backlighting will stay on for about three seconds after pressing a key

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User manual
In order to start the chronothermostat after it has been installed, proceed as follows:
1. Set the date and time.
2. Select the Summer/Winter operation.
3. Select the operating mode.
Setting the date and time
To set the current time and date, proceed as follows:
1. Enter the programming menu main page. The operating mode currently used will
be interrupted temporarily.
Choose the time setting function.
2. Modify the hour setting by means of the ▲and ▼buttons,then go to the
minute setting by means of the ►button.
3. Modify the minute setting by means of the ▲and ▼ buttons, then go to the day
setting by means of the ►button.
4. Modify the day setting by means of the ▲ button, then press ENTER to go
back to the main page of the programming menu.
5. Press ENTER again to exit the programming menu.
The chronothermostat operating mode previously interrupted will be resumed.

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Summer/Winter selection
To shift from the Winter operation (heating system) to the
Summer operation (cooling system), and vice versa, keep
the Summer/Winter button pressed for at least 4 seconds.
The selected operation will be shown on the display by
means of the “Winter” or “Summer” icons.
Operating modes
The CRONOTC...B chronothermostat features four different operating modes:
Manual, Automatic, Holiday and Jolly (in addition to the OFF function).
“Manual” operating mode
With the Manual operating mode, the chronothermostat adjusts the operation of
the heating or cooling system in order to always keep the same temperature. To
select “Manual”, press MAN.
The temperature level can be modified during operation by means of the
lower using either one of the three rotary switches on the right side of the
chronothermostat.The temperature can be changed from 2°C to 40 °C by 0.1°C
increments.
Winter Summer

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“Automatic” operating mode
With the “Automatic” operating mode, the chronothermostat adjusts the
operation of the heating or cooling system by following the profiles defined
for the various days of the week. To select “Automatic”, press AUTO.
The three temperature levels used can be modified during operation by means
of the rotary selectors located on the right side of the chronothermostat.
Temperature T3 cannot be lower than temperature T2 or higher than 40 °C.
In Summer operation mode, the upper limit of temperature T3 is 30°C. When
this value is exceeded, T3 will take the OFF value, which will involve switching
the system off.
Temperature T2 cannot be higher than temperature T3 or lower than
temperature T1.
Temperature T1 cannot be higher than temperature T2 or lower than 2 °C.
If no customization has been made, the automatic operating mode will function
with the stored temperature profiles, i.e. the preset ones (refer to «Preset
programs» pag. 35). To customize the profiles, refer to «Chronothermostat
programming» pag. 35.

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“Holiday” operating mode
With the “Holiday” operating mode, the chronothermostat adjusts the operation
of the heating or cooling system by following one single temperature profile,
which is valid for all days.
To select “Holiday”, press HOLIDAY.
To modify the temperature levels, refer to the description of the “Automatic”
operating mode (pag. 31).
When the preset programs are used (refer to «Preset programs» pag. 35), the
“Holiday” mode will follow the profile set for Saturdays and Sundays. To create a
customized “Holiday” program, refer to «Chronothermostat programming» (pag.
35).
“Jolly” operating mode
With the “Jolly” operating mode, the chronothermostat interrupts the current
operating mode and adjusts the operation of the heating or cooling system to
keep the “Jolly” temperature during the entire time set (from 1 hour to 99 days
and 23 hours, by 1 hour increments). After this time – which is displayed like a
countdown – has elapsed, the previous operation of the chronothermostat will
be resumed. To select “Jolly”, press JOLLY.
The “Jolly” temperature value and the operating mode duration can be modified
by means of the rotary selectors located on the right side of the chronothermostat.
Use the lower rotary selector to modify the temperature level.

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The temperature can be modified from 2°C to 40 °C, by 0.1 °C increments.
To set the “Jolly” operating mode duration, i.e. hours («h»), use the central rotary
selector. The hours can range from 0 to 23.
To set the “Jolly” operating mode duration, i.e. days («d»), use the upper rotary
selector.
The days can range from 0 to 99.
You can interrupt the “Jolly” mode at any time, by selecting any other operating
mode.
The “Jolly” operating mode can be used, for instance, to:
• saveenergybyloweringthetemperaturewhenthehouseisnotinhabitedatthe
weekends or winter vacation, while being sure that a comfortable temperature
will exist when the house is inhabited again);
• extendthenightheatingorcoolingbeyondtheusualtime,i.e.whenyoustayup
in the company of your guests.
“OFF” function
The “OFF” function can be activated by pressing OFF.

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Winter operation
The chronothermostat adjusts the operation of the heating system to keep the
“Antifreeze” temperature, in order to reduce the energy consumption and, at the
same time, avoid any damage caused by extremely low temperatures.
The “Antifreeze” temperature can be modified from 2°C to 7°C (by 0.1°C
increments), by using either one of the three rotary switches on the right side of
the chronothermostat.
If a temperature of less than 2°C is set, the system will be fully turned off and
the antifreeze protection will be lost.
Summer operation
The system will be fully turned off and the “OFF” message will appear on the
display, without any temperature profile.

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Preset programs
The chronothermostat has two preset programs (i.e. “Winter” and Summer”) for
quicker start-up.
“Winter” program – working days
(from Monday to Friday)
“Winter” program – public holidays
(Saturdays, Sundays and “Holiday” program)
“Summer” program
(All days of the week, plus “Holiday” program)
Chronothermostat programming
You can customize the temperature profiles for the “Automatic” and “Holiday”
operating modes, so as to adapt them to your own needs.To set new temperature
profiles, proceed as follows:
1. Enter the programming menu main page.The operating mode currently used
will be interrupted temporarily.
Choose the temperature profile customization function.
2. The Monday profile (DAY 1) for “Winter” operation (icon ). will be displayed.
Use the ◄and ►buttons to move the bar chart blinking segment to the
time at which the temperature is to be modified. Each segment equals half an
hour.To modify the “Summer” operation profile (icon ), press the “Summer/
Winter” button on the left side of the chronothermostat.

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3. Use the ▲ and ▼ buttons to modify the temperature level (T1, T2 or T3).
4.
5.
6. To directly duplicate the temperature profile by going to the next day, press
COPY (to customize every single day separately, refer to step 5 below).
7. Press ENTER to go to the next day, then repeat the operations described
starting from step 2 for the other days of the week (the “Holiday” profile will
be indicated as DAY 8). To go back to the programming menu main page, use
the ENTER button to scroll through the eight days or keep the ENTER button
pressed for 3 seconds.
If no button is pressed within the next three minutes, the chronothermostat
operating mode previously used will be resumed.
Reset default parameters
To resume the preset temperature profiles and values (T1-T2-T3-Temperature
used with the Manual mode, Temperature used with the Jolly mode, Antifreeze
temperature, OFF function), keep the ▲and ▼ buttons pressed simultaneously
when you are in the temperature profile programming mode.
Displaying the temperature detected by the separate probe
To display the temperature detected by the external floor temperature probe the
chronothermostat must be configured (refer to «chronothermostat configuration»
pag. 41) and the probe must be connected.
To display the temperature value read by the external probe, press the button of
the operating mode currently used (the temperature will blink).
To display again the temperature detected by the chronothermostat, press again
the button of the operating mode currently used (the temperature will not blink
any longer).

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Statistical data
The chronothermostat provides a set of statistical data concerning the system
operation. To access this data, proceed as follows:
1. Enter the programming menu main page.The operating mode currently used
will be interrupted temporarily.
Choose the statistical data function.
2. Page 1:number of hours during which the
system was switched on the previous day
(6 hours in the image).
Use the ►button to go to the next page.
3. Page 2: total number of hours during which the system has been switched on
and operating since its first start-up (16 hours in the image).
Use the ►button to go to the next page.
Press the ▲and ▼buttons simultaneously
to reset the total system switch-on hours.
4. Page 3: minimum temperature reached on the current day, and time at
which such minimum temperature was reached (15.8°C at 03.15 a.m. in the
image). Use the ►button to go to the next page.
5. Page 4: maximum temperature reached
on the current day, and time at which
such maximum temperature was reached
(22.5°C at 09.08 p.m. in the image).
6. Press the ENTER button twice to go back to
the operating mode previously used.

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Maintenance
To clean the chronothermostat use a soft cotton cloth and no detergent. Do not
use paper handkerchiefs to clean the touch screen.
Keyboard lock
To clean the chronothermostat without changing accidentally its settings,
press the Summer/Winter key in order to activate the keyboard lock. When the
keyboard lock is ON, symbol on the display will turn on. The display can now
be cleaned, each time a key is pressed symbol lwill flash. To restore keyboard
operation, press again the Summer/Winter key, symbol will turn off.
Touch Screen
The touch screen surface is highly scratchable. Only use your fingers to touch
the screen. Never use pens, pencils or other pointed objects.
Replacing the batteries
When the battery charge starts to lower, symbol on the display will start
flashing.
If the “bAtt” parameter is set to “On” or to “Off” (see paragraph «configuring
the chronothermostat» pag. 41) and batteries are not replaced within 15 days,
the chronothermostat will turn off automatically and the display will show the
message “OFF” or “On” instead of the temperature value.
Settings and data are however stored in the non-volatile memory.
To remove the chronothermostat from the base pull the left and right sides of the
chronothermostat, without applying force to selectors.
If after replacing the batteries, the display only shows the message OFF or On,
press the icon key with ENTER after refitting the chronothermostat on the base.
With the “bAtt” parameter off (see paragraph «configuring the chronothermostat»
pag. 41), and symbol flashing, batteries shall be changed as soon
as possible to prevent that battery charge becomes insufficient for regular
chronothermostat operation.
IMPORTANT: Standard battery life is approx. 1 year. You are
recommended to replace batteries at the beginning of system operating
season to prevent batteries from running down when you are away
from home, e.g. during Christmas holidays.
The batteries shall be properly disposed of in special containers.

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Installation
CAUTION: The chronothermostat shall be installed by qualified
personnel only, in compliance with the current regulations in force.
Chronothermostat installation involves the following operations:
• Fasteningthebase.
• Electricconnections.
• Fittingthebatteries.
• Fasteningthechronothermostatsontothebase.
• Conguringchronothermostatparameters.
Fastening the base
The chronothermostat is supplied with a base suitable for wall mounting or for
flush-mounting in three-module rectangular or round boxes.
SPACING DIMENSIONS FOR FIXING THE BASE
Separate the base from the chronothermostat levering on the slot located at the
bottom of the base by means of a proper tool.
Make sure that the base is properly secured and it is not deformed. Check that
the chronothermostat multi-pole connector is placed at the bottom left corner.
To ensure correct operation the base shall be installed at about 1.5 metres above
the floor level and far from heat sources (heating radiators, direct sunlight, etc.),
doors and windows.
83
60
60

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Electric connections
Before making connections, remove the terminal protection guard (keep it
together with the fastening cross-slotted screw).
Protection guard fastening screw
Connecting the heating or air-conditioning system
Connect the two wires of the heating or air-conditioning system to the terminals
1 and 2, as shown in the figure.
Terminals are suitable for flexible cables with screw 2.5 mm2max section.
Terminal 4 is free and may be used for signalling or other use, as necessary.
Neutral Phase
LOAD = burner - circulation pump
Warning: Make sure the relay load value is not exceeding the values specified
in «Technical data».
LOAD Chronothermostat relay
terminal block

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Connecting the external floor temperature probe
Connect the two wires of the external temperature probe to terminals A and B,
as shown in the figure.
Once connections are over, refit the terminal protection guard removed
previously.
Fitting the batteries
Fit two long-life 1.5 V AA alkaline batteries into the back of the chronothermostat,
observe the specified polarity. After fitting the batteries the chronothermostat will
turn on automatically.
Fastening the chronothermostat onto the base
Press by hand the chronothermostat onto the base, make sure the multi-pole
connector fits properly. The chronothermostat will click into position.
Configuring the chronothermostat
Warning: The chronothermostat shall be configured by qualified
personnel only.
Chronothermostat configuration enables to customize the operating parameters.
To open the configuration program, proceed as follows:
1. Press the SET / PROG key [key 6]. The operating mode being currently used
will be temporarily stopped and it will be resumed automatically at the end
of programming.
2. Keep the SUMMER / WINTER switching key [key 10] pressed for about 5
seconds.
3
2
1
B
A
TERMINAL BLOCK
CRONOTC...B
EXTERNAL
TEMPERATURE
PROBE
TERMINAL
NOT USED

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Every configuration parameter featuring preset settings is identified on the
display by an index and a writing. To change parameter values use keys ▲ [key
1] and ▼[key 2]; use key ► [key 4] to move across parameters.
To go back to the initial page of the programming menu, press the ENTER key
[key 5] which will save changes.
If no key is pressed within 3 minutes, the chronothermostat will quit the
configuration program and will resume the operating mode being used
previously, without saving changed settings.
To cancel changed settings and to reset preset configuration parameter values,
keep keys ▲[key 1] and ▼ [key 2] pressed simultaneously for about 4 seconds.
Index Parameter Writing Values Preset value
1Type of connected card COn rEL / rAd / --- none
2Temperature scale CELS o
FHAr
°C / °F °C
3Type of regulation Std o
ProP
Std / ProP Std
3A Thermal differential DIFF HI / LO LO
3A Regulation band BAnd 1 °C – 4 °C (step 0.1°C) 2 °C
3B Regulation period Per 5 / 10 / 20 minutes 10 minutes
4Separate temperature probe
configuration
Sect --- / FLO / In /Out ---
4A Floor temperature limit Tflo 15 °C – 45 °C 27.0 °C
5Ambient temperature
correction
Corr -4.0 °C to +4.0 °C 0.0 °C
6Optimization Opt ON/OFF OFF
6A Max. optimization duration
(hours)
OPtH 1h – 5h 2h
7Pump anti-seizure Pu ON/OFF OFF
8Low battery bAtt --- / On / OFF OFF
9Baud baud 0/1 0
10 Software release SOFt xxx xxx

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Type of connected card
The chronothermostat can check whether the base is connected. If it is not
connected dashes will be displayed whereas when it is connected the writing
rEL is displayed.
Temperature scale
To select the temperature scale to be displayed: Celsius (centigrade) or
Fahrenheit. When choosing the Fahrenheit scale, temperatures may range
between 0.0 and 99.9 °F.
Type of regulation
To select the temperature regulation mode: differential (Std) or proportional
(ProP). This parameter is used for heating only.
Thermal differential
To set the thermal differential value to be used when choosing the differential
temperature regulation mode. Continuous switching on and off can be avoided
by choosing a proper differential value according to the thermal inertia of
the heating system. It is recommended to set a low thermal differential (LO)
in heating systems with radiators and high thermal differential (HI) in heating
systems with fan-coils.
Regulation band
To select the proper value according to the thermal gradient of the system
(broadband for high gradients– narrow band for low gradients).
Regulation period
To set the regulation cycle length (ON period + OFF period) when the proportional
temperature regulation mode is chosen. Select 5 minutes for low-inertia systems
(fan-coil type), 10 minutes for average-inertia systems (aluminium radiator type) and
20 minutes for high-inertia systems (cast-iron radiator type).
External temperature probe configuration
The chronothermostat may be connected to a an external temperature probe.
Probe operation is determined by this parameter.
• Probe off (---): the temperature value detected by the probe is not used
(although the probe is connected).
• Floorprobe(FLO):whenthetemperaturedetectedbytheprobereachesthe
value set in the Floor temperature limit parameter, the system will be turned off
regardless of the temperature read by the chronothermostat.
Floor temperature limit
To set the temperature limit value read by the external probe which turns the
system off when the floor probe is used (for floor heating systems).
Ambient temperature correction
To sum/subtract an offset value to/from the temperature value read by the
chronothermostat.