bticino HC/HS/HD4451 Flush Mounted Timer Thermostat User Manual

The 4451 Chronothermostat is a flush-mounting device that can be used for heating and air-conditioning systems; it is possible – through several programming possibilities – to adjust the temperature at any time of the day and in a differentiated manner, every day of the week. It is possible to choose how to use a standard program (already stored but can be changed according to the specific needs of the user) or to create a new one with a simple programming procedure.
A large back-lit display shows you at all times the program setting, the status of the system, and the temperature of the room.
The Chronothermostat consists of a base used for the system’s electric connections and a removable front part to allow the user to execute the programming operations and to replace the batteries more easily.

The front side

Graphic display: displays the messages which determine the programming operations as well as the system status
Selection Keys: these let you cycle through the functioning modes inside the menu, if any, while the main screen is being viewed;
OK Key: accesses the main menu, confirms the selection displayed or the data entered
Sensor: measures the ambient temperature
C Key: cancels the selection and returns to the previous page; if held down, it returns to the initial page
Scroll Keys: these let you change the set temperature while the main screen is being viewed; when inside the menu, you can scroll the list of the options available.

The display

During normal operation, the graphic display shows the following background information:

Symbols
Depending on the functioning mode selected, the display may be characterised by the following symbols:

Weekly
Temperature profile and number of the operational program
The range of the corresponding time will flash on the graph (for example, 11:26 will flash on the square corresponding to the time from 11:00 to 12:00).

Manual
Manual mode Icon (hand)

Holidays
Antifreeze or Thermal protection Icon, time and date of Holidays program end

Timed
Manual mode Icon and number of hours and minutes to the end of the Timed program

Antifreeze
Antifreeze (winter) or Thermal protection (summer) mode Icon

OFF
OFF mode Icon

If an external probe is connected to the Chronothermostat and the preset function is “External Temp.”, its associated icon will be shown on the display. Every 2 seconds the outside temperature and the ambient temperature will be displayed alternately (in the same position). (See chapter 2.1.12).

External probe
External temperature signaling Icon
When the battery is flat, its signaling icon will be displayed (in any mode, even when the screen saver is functioning). If flashing, the device will not work, thus the batteries need to be replaced.
Battery
Flat battery signaling Icon

Your Chronothermostat: use it now!

First activation

To enable the Chronothermostat:

select the functioning Language
set Date / Time
the Chronothermostat automatically sets to Winter mode and weekly
Program1 mode.
The display shows the currently set selection. (Italian factory setting)
The keys can be used to scroll the list and select the language
Press OK to confirm
After confirming, the Chronothermostat switches to the Set DATE and
TIME menu
Set time and date with keys: increase/decreases the selected digit, scroll the time and date digits
Press OK to confirm
Hold down the C key to exit the menu and return to the main page Chronothermostat will automatically set up as follows:
- Winter mode
- Weekly-Program1 mode
  To set the Summer mode
Press OK to access the menus
select Setup with the key
Press OK to confirm
Complete the setup by following the procedure described on see chapter 2.1.

Daylight saving time: if the default setup is kept, “Manual” must be updated manually; to set up the “Automatic” update mode, see paragraph “Set Daylight saving time” on see chapter 2.1.4).

Introduction and standard functions

Navigation keys

When the main screen is displayed, the following operations can be executed with the navigation keys:

OK Key accesses the Main menu – confirm
C Key cancels and returns to the previous mode
Keys depending on the preset mode:
- Weekly – Manual – Timed: increase/decrease in the current temperature;
- Holidays – Antifreeze – OFF: no effect
Keys cycle through the functioning modes

View the functioning modes

When the Chronothermostat display shows the Screen saver (or when it is off), the preset functioning mode will be displayed if any key is pressed.

Scroll the modes

When the Chronothermostat display shows the Screen saver (or when it is off), the preset functioning mode will be displayed if any key is pressed.

Use the keys to view the other modes: Weekly, Manual, Holidays, Timed, Antifreeze and Off.
The name of the selected mode flashes to indicate the modification status: if it is not confirmed (by pressing OK) or, if a key is not pressed for more than 10 seconds, the operation will be cancelled, thus displaying the main screen with the current mode.

To set the functioning mode displayed:

Use the OK key to confirm the Chronothermostat is now working under the new mode.
Depending on the mode selected, the following modification functions will be possible.

Change the Weekly mode

Use the keys to select the “Weekly” mode
The number of the operative program flashes as well as the square corresponding to the time.
Use the keys to scroll the three programs and to display the daily profile.
Select the required program; when the number of the program stops flashing, it will be possible to change the level of the current temperature.
Use the keys to select the level of the required temperature.
The profile displayed, starting from the flashing square, will be modified with the new temperature level, until the next level is changed.
Use the OK key to confirm

Change the Manual mode

Use thekeys to select the “Manual” mode.
Use thekeys to increase or decrease the value of the preset temperature.
Use the OK key to confirm or the C key to cancel and return to the previous mode.
The Chronothermostat is now working under the new preset mode.

Change the Holidays mode

Use thekeys to select the “Holidays” mode.
Use the OK key to confirm
When confirming, the Holidays Mode setup menu will be displayed;
Use theand keys to set the time and data:
increases/decreases the selected digit
scrolls the time and date digits
Use the OK key to confirm
Use thekeys to select the weekly program to be reset at the end of the Holidays period.
Use the OK key to confirm
The display shows the Antifreeze or Thermal protection mode Icon as well as the time and date of the Holidays program end.
The Chronothermostat is now working under the new preset mode.

Change the Timed mode

Use the keys to select the “Timed” mode.
Use the keys to increase or decrease the value of the preset temperature.
Use the OK key to confirm
When confirming, the Timed Mode setup menu will be displayed;
Use the and keys to set the temperature and hours/minutes increases/decreases the selected digit toggles from temperature to hours/minutes
Use the OK key to confirm
The Manual mode Icon and the time to the end of the Timed program will be displayed.
The Chronothermostat is now working under the new preset mode.

Change the Antifreeze mode

Use the keys to select the “Antifreeze” mode.
Use the OK key to confirm
The display shows the Antifreeze mode Icon for Winter functioning or the
Thermal protection mode Icon for Summer functioning.
The Chronothermostat is now working under the new preset mode.

Change the Off mode

Use the keys to select the “Off” mode.
Use the OK key to confirm
The Off mode Icon will be displayed.
The Chronothermostat is now working under the new preset mode.

Replacing the batteries

When the symbol below is displayed it is necessary to replace the batteries. If flashing, the device will not work, thus the batteries need to be replaced. The “dead battery” signal appears about one month before the batteries totally run out.
When replacing the batteries, the data stored will be saved.
After replacing the batteries, it is recommended to check the Date and Time of the Chronothermostat.

Putting in the batteries

Remove the Chronothermostat from the base
Put in the two long-lasting LR6/AA (recommended for photographic applications) 1.5V alkaline batteries according to the polarity shown in the drawing.

The batteries will last for at least 1 year. The duration depends on the type of batteries, on the screen saver selected (See chapter 2.1.8) and on the display activation time (about 5 seconds every time a key is pressed).

Setup menu

The setup menu lets you customize some parameters or functioning modes of the Chronothermostat.

Set the Summer/Winter functioning mode

Sets the system functioning mode (default is Winter):
Summer = cooling, Winter = heating

Use the keys to select the option “Summer/Winter”
Press OK to confirm
A screen will be displayed showing the indication of the functioning mode being used.
Press OK to switch over the functioning mode
Press C to exit the menu and to return to the previous page.
After switching over, the system will set to the Antifreeze mode (for Winter) or Thermal protection (for Summer).
Set the Temperature levels
You can set the level of the Antifreeze temperature or Thermal protection T* and the temperature levels T1, T2 and T3 used in the weekly programs.
The default values are:
- Winter T*=7°C, T1=18°C, T2=20°C, T3=22°C
- Summer T*=35°C, T1=20°C, T2=23°C, T3=25°C
Use the keys to select the option “Temperature”
Press OK to confirm
Use thekeys to select the temperature level
Use the keys to set the value of the required temperature
Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence cancelling the change.
Set the Date and Time
For proper operation of your system, make sure that the date and time are set correctly.
Use the keys to select the option “Date and Time”
Press OK to confirm
Set time and date with keys:
increases/decreases the selected digit,
scrolls the time and date digits;
Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence cancelling the change.

Set the Daylight saving time
For proper operation of your system, make sure that the date and time are set correctly.

Use the keys to select the option “Daylight saving time”
Press OK to confirm
A screen will be displayed showing the indication of the status.
Press OK to switch over the functioning mode
Press C to exit the menu and to return to the previous page.

Set the measurement unit of the temperature

Sets the measurement unit of the temperature: Celsius or Fahrenheit (default is Celsius).

Use the keys to select the option “Degrees”
Press OK to confirm
A screen will be displayed showing the indication of the preset measurement unit.
Press OK to change the measurement unit
Press C to exit the menu and to return to the previous page.

Enable/Disable the Remote control

Enables/Disables the remote control using a telephone actuator of the Chronothermostat (default is Enabled).
The remote contact is managed as follows:

Closed= antifreeze mode activation
Open= last set weekly program

Use thekeys to select the option “Remote control”
Press OK to confirm
The display shows the preset status.
Press OK to change the status
Press C to exit the menu and to return to the previous page.

Adjust the Display contrast
Adjusts the contrast of the graphic display.

use the keys to select the option “Contrast”
Press OK to confirm
Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence cancelling the change.

Select the Screen Saver

Selects what you want to show on the Chronothermostat display when in idle condition (default is Temp/date/time).
You can select the following:
Only Temp. – temperature measured
Temp./date/time – temperature measured and date/time
Main – complete main screen
Off – display completely off
- Use the keys to select the option “Screen Saver”
- Press OK to confirm
  The display shows the currently set selection.
- Use the keys to select the “Screen Saver”
- Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence cancelling the change.
  Please note: maximum battery duration is guaranteed when the display is OFF.

Select the Language

Selects the language for the menu (the default is Italian).
Use the keys to select the option “Language”
Press OK to confirm
The display shows the currently set selection.
Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence canceling the change.

Select the Temperature adjustment

This setting lets you choose the type of temperature adjustment according to the type of system.

Standard default (recommended)
Proport. 5min low-inertia systems (fan-coil)
Proport. 10min medium-inertia systems (aluminum radiators)
Proport. 20min high-inertia systems (cast iron radiators)
Use the keys to select the option “Adjustment”
Press OK to confirm
The display shows the currently set selection.
Use the keys to select the required adjustment
Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence canceling the change.

Calibrating the thermal probe

This setting lets you calibrate the measurement of the internal and external probe.

Use the keys to select the option “Calibration”
Press OK to confirm
If the external probe is set as a floor probe or used for the outside temperature, the selection of the probe will be given.
Use the keys to select the probe
Press OK to confirm

If the external probe is not operative, the calibration menu of the internal probe will be displayed directly.
If the external probe is set for measuring the ambient temperature, the calibration menu of the external probe (internal probe inoperative) will be displayed directly.

Use the keys to change the temperature
Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence cancelling the change.
If you RESET the Chronothermostat, the temperature offset determined during the Calibration will be removed.

Select the function of the external Probe

Select the function of the external probe (default is Not active).
You can select the following:

Not active – the probe will not be read
Ambient Temp – measures the ambient temperature in lieu of the Chronothermostat internal sensor
Floor – measures the temperature of the floor and turns off the load if it exceeds the set value
External Temp. – measures the external temperature; when selected, every 2 seconds the outside temperature and the ambient temperature will be displayed alternately (in the same position).
Use the keys to select the option “External probe”
Press OK to confirm
Use the keys to select the function
Press OK to confirm
If you set the “Floor” function, a screen will be displayed which will let you set the threshold temperature of the probe (range: from 15 to 55°C; default is 35°C).
Use the keys to change the threshold temperature
Press OK to confirm and to go back to the previous page or press C to exit the menu and to return to the previous page, hence canceling the change.

View/Reset the activation Hours

This function enables you to display/reset the functioning hours of the system.
Use the to select the option “Operation time”
Press OK to confirm
The display will show the functioning hours of the system.
Press OK to confirm and to go back to the previous page or, to reset the counter, use the lkeys to select the “Reset” function
Press OK to confirm, and C to go back to the previous page.

Resetting the Chronothermostat

This lets you totally reset the Chronothermostat; all factory settings will be retrieved.
Use the keys to select the option “Reset”
Press OK to confirm
The display will show a confirmation request.
Press OK to Reset the Chronothermostat and to go back to the previous page or press C to cancel and to return to the previous page.
After executing this operation, the Chronothermostat configuration as well as all the programming operations will be lost!

Programming

Programming Menu

Here, you will be able to change/program the weekly profiles of the 3 weekly programs for the selected functioning mode (Summer/Winter). Within these programs, it will be possible to differentiate the temperatures around the clock and for each day of the week.
“PROGRAM 1” is set in advance but can be changed. Select the weekly program to be customized:

Select “Programming” in the Main menu with the keys
Press OK to confirm select the program you want to change the following functions are available for the selected program:
Use the keys to select the required function

Rename a Weekly program

When you select this function you can customize the name of the program (maximum 13 characters).

Use the keys to select the Program to be renamed
Press OK to confirm
Use the following keys to enter the new name for the Program:
to move the cursor
to scroll the characters
Press OK to save or C to cancel.

The keys scroll alphanumeric characters (only uppercase), numbers and special characters in the following order: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, Z, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, space, dot, hyphen, prime.

Change a Weekly program

When you select this function you can change the selected weekly program.

Use the keys to select the Program to be changed
Press OK to confirm
Use the keys to select the day
The following functions are also available for the day selected:
Copy from and View which can be selected with the keys
press OK to confirm the modification function
It is now possible to modify the profile displayed with the navigation keys, as shown specifically in the following pages.

Copy a daily profile

Copy the program from one day to another.

Use the keys to select the day you want to copy the profile in
Select the function Copy from
Press OK to confirm
Use the keys to select the day you want to copy
Press OK to confirm.

Display a daily profile

Displays the profile of the selected day.

Use the keys to select the day
Select the function Display
Use the keys to scroll all the days of the week
Press OK or C to exit the viewing mode.

Daily profile modification tools

Information displayed:

There are two working modes:

SCROLLING
The arrow-shaped cursor lets you move the cursor, using the keys, along the timeline without making any changes to the daily profile.
MODIFYING
The pencil-shaped cursor and the temperature level is shown to let you move the cursor, using the , keys, along the timeline in order to set the selected temperature level.

Create a new daily profile

It is recommended to follow the procedure described in this example step by step. It will be useful to get you acquainted with the “Modifying” and “Scrolling” modes and with the navigation keys.
Example: the creation of the following daily temperature profile for “Monday” of the “WEEK. WINTER” program.

from h 00:00 to h 06:00 – 18°C (T1)
from h 06:00 to h 09:00 – 22°C (T3)
from h 09:00 to h 16:30 – 20°C (T2)
from h 16:30 to h 22:00 – 22°C (T3)
from h 22:00 to h 24:00 – 20°C (T2)

After completing the procedure, use the “Copy from” function (See chapter 3.1.2) to copy the “Monday” profile to other days of the “WEEK. WINTER” weekly program.

Procedure:

Copy a Weekly program

This function lets you copy a weekly program into another one. For example, copy Program 1 (preset at factory) to WEEK. WINTER.

Use the keys to select the program you want to copy
Use the keys to select the function Copy from
Press OK to confirm
Use the keys to select the program to be copied
Press OK to confirm
The display will show a confirmation screen

View a Weekly program

This function lets you display (in “scrolling” mode) the profile of the selected day.
Use the keys to select the program
Use the keys to select the function View
Press OK to confirm
Use the keys to select the day
Press OK to confirm the display shows the profile associated with the selected day
Use the keys to let you scroll through the daily profiles of the whole week.

Remove a Weekly program

This function lets you eliminate a customized program and restore the default settings.
Use thekeys to select the program you want to eliminate
Use the keys to select the function Erase
Press OK to confirm
The display will show a confirmation request.
Press OK to confirm
The program will be removed and all default settings will be restored (profile and name).

Reference

Download Manual:

bticino HC-HS-HD4451 Flush mounted timer thermostat User Manual

OTHER MANUALS:

bticino HC-HS-HD4451 Flush mounted timer thermostat Installation Instruction

bticino HC/HS/HD4451 Flush Mounted Timer Thermostat User Manual

bticino HC/HS/HD4451 Flush Mounted Timer Thermostat User Manual