Bpt TA 450 User manual

Digital Thermostat - Wall Mounting
TA 450
Instruction Manual
TA450E 24806660 13-03-13

2
THERMOPROGRAM TA450
Congratulations on the purchase of this TA450 thermostat.
The TA450 programmable thermostat has been designed to guarantee ideal temperature
conditions and to adapt itself to all types of systems having differing thermal inertias (con-
vector heaters, radiant underfloor heating, electric heaters, etc.). Therefore, whatever the
environmental conditions or installation situation the TA450 offers the maximum of comfort
and energy saving. Thanks to the ample LCD display and ergonomic design of the controls
all of the TA450’s functions are easily used and programmed.
For best performance and to enable you to make best use of your programmable thermo-
stat’s characteristics and functions please read this manual carefully and keep it available
for future reference.
Read Carefully
• Read the warnings contained herein with care as they furnish important instructions regard-
ing safe use, installation and maintenance.
• After removing the packaging check the condition of the unit.
• The system must be installed in compliance with current safety standards.
• The manufacturer declines all liability for any damage as a result of improper, incorrect or
unreasonable use.
• Should the unit be in need of repair contact only a technical support centre authorised by
the manufacturer.
• Failure to comply with the above instructions may compromise the unit’s safety.
• Install the unit in a position which is suitable for correct room temperature measurement
for example on an internal wall. Avoid installation in niches, behind doors or curtains, or
near heat sources.
• Only use LR03 1.5V penlight AAA alkaline batteries
• Only clean the thermostat with a soft cloth dampened with water.

3
CONTENTS
FUNCTIONS ......................................................................4
CONTROLS AND SYMBOLS ........................................................6
1 - INSTALLATION ...............................................................8
2 - ELECTRICAL CONNECTIONS ..................................................9
3 - POWER SUPPLY .............................................................10
4 - SETTING THE CLOCK ........................................................11
5 - USER PROFILE SELECTION ...................................................12
6 - OPERATING MODE SELECTION...............................................12
7 - TEMPERATURE CONTROL LEVEL SELECTION (COMFORT, ECO, NIGHT) .........13
8 - MANUALLY SETTING A TEMPORARY TEMPERATURE...........................13
9 - OVERALL SYSTEM OPERATING TIME..........................................13
10 - TEMPERATURE CONTROL LEVEL PROGRAMMING (COMFORT, ECO AND NIGHT) ...14
11 - PROGRAMMING THE FROST PROTECTION TEMPERATURE....................15
12 - TEMPERATURE MEASUREMENT CALIBRATION ................................15
13 - PROGRAMMING THE THERMAL DIFFERENTIAL................................16
14 - PROGRAMMING THE PROPORTIONAL/INTEGRAL VALUE ......................17
15 - TEMPERATURE SETPOINT ADJUSTMENT BLOCKING ........................20
16 - REMOTE CONTROL ..........................................................20
17 - DISABLING MAGNETIC SWITCH SYSTEM CONTROL ...........................21
18 - RESET.......................................................................22
19 - BATTERY REPLACEMENT.....................................................22
20 - TECHNICAL CHARACTERISTICS ..............................................24

4
FUNCTIONS
Clock
As an alternative to displaying the current temperature the time can be displayed instead
(hours and minutes). Simply press the display temp/time button .
User Profile
Two different user profiles are available that feature three different temperature levels
(COMFORT, ECO and NIGHT). These profiles can be used in both “HEATING” and “COOLING”
modes.
Heating, Cooling and System Bypass
The TA450 can operate in either “HEATING” or “COOLING” mode with the additional option
of frost protection without temperature control. Both modes offer the selection of three
different temperature levels.
Three levels of temperature control
In order to obtain the maximum of comfort in either heating or cooling mode the TA450
offers the possibility of selecting, in a simple and intuitive way, three different temperature
levels (COMFORT, ECO and NIGHT) which together allow for temperature programmability
over the range +3°C to +35°C. The TA450 is pre-programmed with the following tempera-
ture values.
In heating mode In cooling mode
COMFORT 20 °C COMFORT 24 °C
ECO 18 °C ECO 26 °C
NIGHT 16 °C NIGHT 28 °C
If these values correspond to your needs then the TA450 will not require further program-
ming.
Accumulated System Operating Time
The TA450 features an hour-counter (up to 9,999), which records the system’s overall number
of operating hours.
Remote Control
By means of a telephone dialler or similar appropriate telephone controlling device the
TA450 can be activated remotely thus guaranteeing a warm welcome home. Remote
control activation is made evident by the presence of the dedicated icon on the display.
Note. Closing the isolated contact will activate the thermostat at the programmed tempera-
ture; opening it will turn the thermostat OFF.

5
System deactivation by means of magnetic switch
It is also possible to force temperature control exclusion via the use of a magnetic window
switch connected to the relevant terminals. This helps to avoid wasted energy. The activa-
tion of this mode is indicated on the display by the word .
Frost Protection Control
Whenever temperature control on the TA450 is bypassed, either manually or automatically,
differential FROST protection remains active thus safeguarding both the boiler and the water
pipes. The FROST PROTECTION temperature is programmable from +3°C to +16°C.
+3°C
–3°C
Temperature measurement calibration
Should the positioning of the TA450 not prove to be ideal (for example when situated close
to a heat source) temperature measurement can be inaccurate: to overcome this problem
the reading can be calibrated by +/– 3°C thus optimising comfort and energy consumption.
Thermal differential control
This control system is recommended for installations that are particularly difficult to control
such as those that experience extreme variations in external temperature. It guarantees
maximum benefit from the installation with minimum consumption. In order to adapt the
system to installations that feature differing thermal inertias (convector heaters, underfloor
heating, electric heaters) the temperature differential can be set between 0°C and 0.9°C
PI
Proportional/Integral Control
Allows for the optimisation of fuel consumption while enjoying the maximum of environ-
mental comfort by reducing the number of times the boiler is ignited as a function of the
difference between the set temperature and room temperature: the smaller the difference
between the two temperatures the fewer the number of times the boiler is ignited thus
leading to a considerable reduction in energy consumption while maintaining a certain
degree of comfort. The TA450 allows for the selection from among three preset programmes
depending on the type of system to control (P1, P2 and P3). Alternatively programme P4,
which is completely manual, can also be selected (See table 1 on page 18).
Integral proportional adjustment has the advantage of permitting the management of a
wider variety of systems with respect to the setting of the thermal differential. It is especially
suitable for underfloor and radiant systems. The difference between the set temperature
and the ambient temperature is just a few tenths of a degree. This allows for more precise
adjustment.
Temperature Set-point Adjustment Blocking
The TA450 can block the programming of temperature set-points thus avoiding accidental
changes to settings. Using this feature the user is free to select one of three pre-pro-
grammed levels without the possibility to change them.

6
Information displayed
Ambient temperature and time display.
User profiles.
Temperature Set-point Adjustment Blocking.
Temperature control bypassing with frost protection.
NIGHT temperature level control active.
ECO temperature level control active.
Remote activation.
FROST PROTECTION temperature.
COOLING mode active.
HEATING mode active.
Battery Status Indicators
Battery charge status.
When this warning indicator appears on the display it means that there is around
1 month left to replace the batteries
When this warning appears, it means that the batteries are exhausted ( ).
External controls
Buttons for increasing/decreasing the temperature level.
Temperature operating level selection (COMFORT, ECO and NIGHT).
Display either Temperature or Time.
1
CONTROLS AND SYMBOLS

7
Internal Controls
Reset.
Setting the clock.
Setting of operating parameters.
Operating Modes: COOLING HEATING or OFF .
User profile selection.
Window switch or remote control mode selection.
Frost protection temperature setting.
Display of overall system operating time as a function of temperature level.

Installazione
8
1  INSTALLATION
Install the unit in a position which is suitable
for correct room temperature measurement
for example on an internal wall. Avoid instal-
lation in niches, behind doors or curtains, or
near heat sources
The TA450 is intended to be wall mounted
as follows:
• Open the unit by pressing button A(fig. 2)
while at the same time pulling in the direc-
tion of the arrows.
• Remove the terminal block cover (fig. 3)
and fasten the back of the unit either to the
wall (fig. 4) or within the recessed box using
the screws and wall plugs supplied (fig. 5, 6).
ATTENTION. For the unit to work properly,
we recommend that it be mounted on a flat
surface. Be careful not to tighten the screws
excessively.
A
4
5 6
2
3

Installazione
9
2  ELECTRICAL CONNECTIONS
Wiring will depend on the type of
equipment to be controlled by the
programmable thermostat: refer to
the diagram in fig. 7, 8, 9 or 10.
KEY
Mains power supply wires
N = neutral
L = live
Relay contacts
C = common
NA = normally open contact
NC = normally closed contact
NOTE. Should it be necessary to use
the NC connection within the instal-
lation remove the breakable tab that
blocks access to the terminal block.
Loads
U1 = boiler, circulation pump, sole-
noid valve, etc.
U2 = motorised valve
NOTE. For connection details, refer to
the technical documentation of the
device to be controlled.
Remote control or magnetic switch
inputs
1input
2input
L
N
NC NA
C
12
U2
LOAD
M
CLOSED
OPEN
L
N
NC NA
C
12
U1
LOAD
L
N
NC NA
C
12
7
8
9
10
NC NA
C
12
NA
NC NA
C
12
NC
Remote control
activation
connection
Magnet
switch
connection
AB

Installazione
10
3  POWER SUPPLY
Insert 3 alkaline LR03 penlight AAA 1.5V
batteries within the housing. Make sure the
poles face the right way as shown on the
bottom of the housing (fig. 11).
ATTENTION. Inserting the batteries the
wrong way round could damage the unit.
If nothing appears on the display within 10
seconds press the reset button R (fig. 60).
Close the unit making sure that the hooks
are inserted into the slots (fig. 12).
Once the batteries have been inserted the
display comes on featuring the indications
illustrated in fig. 13
The unit is now set to operate in heating
mode .
The room temperature reading and battery
status indicator now appear.
11
13
12

Utilizzo
11
14
16
15
17
18
4  SETTING THE CLOCK
-Open the cover.
- Press the button until the clock is
displayed.
-Press the button once (fig. 14).
The minutes digits flash.
-Press button or until the correct value
for the minutes is reached (fig. 15).
Each time buttons or are pressed the
numbers on the display decrease or increase
by one. When pressed and held down the
numbers on the display will scroll slowly for
the first five seconds, and then more quickly.
-Press button (fig. 16).
The hour digits flash.
-Press either button or until the correct
value for the hour is reached (fig. 17).
-Press button to end the procedure for
setting the time and day (fig. 18).
The colon between the hours and minutes
flashes to confirm the operation is complete.
If no button is pressed for 15 seconds, the
unit automatically exits this procedure, sav-
ing the last set data.
- Close the cover.

Utilizzo
12
5  USER PROFILE SELECTION
Cycle through the two user profiles available
and select the one desired by pressing the
button. The displaying of one of the
two icons (fig. 19) or (fig. 20) will confirm
which profile has been selected.
6  OPERATING MODE SELECTION
Cycle through the operating modes
HEATING, COOLING and BYPASS by pressing
the button.
The final selection will be verified by the
displaying of either the (heating),
(cooling) or (bypass) icons (fig. 21-22-23).
The displaying of the icon confirms the
bypassing of the temperature control on the
part of the TA450; the frost protection function
will remain active.
For 5 seconds the room temperature reading
disappears to be replaced by (fig. 23).
19
21
20
22
23

Utilizzo
13
24
26
25
27
28
7  TEMPERATURE CONTROL LEVEL
SELECTION COMFORT, ECO, NIGHT
Select the desired temperature control
level by pressing the button. Choosing
between ECO, NIGHT and COMFORT.
The final selection will be verified by the
displaying of the icon together with
either the word or on the
display (fig. 24-25).
When the COMFORT temperature control
level is selected the word appears
on the display for five seconds (fig. 26).
The temperature associated with
is then displayed for 2 seconds to be then
followed by the ambient temperature.
8  MANUALLY SETTING A
TEMPORARY TEMPERATURE
At any moment a temporary temperature
setting can be manually set.
A temporary temperature setting can be
set by means of the buttons.
From this moment on the thermostat will
control the heating or cooling system
maintaining the selected temperature.
The fact that a temporary temperature
value has been set will be verified by the
disappearance from the display of the two
user profiles ( ) and then the icons
(fig. 27).
In order to return to a normal operating
mode simply select either one of the pre-
defined temperature control levels (eco,
night, comfort) or else one of the user
profiles.
9  OVERALL SYSTEM OPERATING
TIME
-In order to visualise the stored data use
the button to select the temperature
control level of interest, open the cover and
press the Cbutton (fig. 28).

Programmazione
14
The display will reveal the total operating time
for 5 seconds.
To reset the counter to zero and start a new
count, press the button while the figures
are visible. The indication disappears after
5 seconds.
- Close the cover.
10  TEMPERATURE CONTROL LEVEL
PROGRAMMING COMFORT, ECO AND
NIGHT
As described in the “User Profile Selection”
chapter select the user profile and operating
mode for which the temperature control
level is to be personalised.
-Open the cover.
-Check to see that either the heating or
cooling symbol is displayed.
-Press button P(fig. 29).
The word appears on the display
signifying COMFORT.
- The required temperature for the COMFORT
temperature control level can now be set by
means of the or buttons (fig. 30); the
word will disappear from the dis-
play to be replaced by the new temperature.
-To confirm the new temperature value
press the Pbutton; the temperature will
appear on the display.
-Repeat this procedure for the other two
temperature control levels ECO ( )(fig.
31) and NIGHT ( ) (fig. 32).
10 seconds after the last action the unit exits
the procedure and accepts as valid the data
inserted up to that moment.
-Once the temperature control levels have
been set press the Pto confirm and exit
programming mode.
NOTE. The display will flash for two second so
as to confirm the modifications.
- Close the cover.
29
31
30
32

Programmazione
15
34
33
36
35
11  PROGRAMMING THE FROST PRO
TECTION TEMPERATURE
- Open the cover.
- Press the button and verify that the
same symbol appears on the display (fig. 33).
The display shows the default frost protection
temperature (3°C) which will remain displayed
for 5 seconds (fig. 33).
- Press the or button to select any
temperature between 3°C and 16°C (fig. 34).
- Press the button to exit and save the
new temperature to memory.
- Close the cover.
12  TEMPERATURE MEASUREMENT
CALIBRATION
- Make sure that the unit is in OFF mode.
- Press button P(fig. 35).
The word will appear on the display.
- Press the buttons (forward) o (back-
wards) (fig. 36) until the desired value of
correction is arrived at.
Pressing either of the arrows will cause the
word to disappear to be replaced by the
correction value to be applied.
10 seconds after the last action the unit exits
the procedure and accepts as valid the data
inserted up to that moment.

Programmazione
16
13  PROGRAMMING THE THERMAL
DIFFERENTIAL
-Make sure that the unit is in OFF mode.
-Press button P twice (fig. 37).
Either the word or the word
will appear on the display.
-Press either the button or the button
(fig. 38) to select .
-Press the Pbutton once again (fig. 39).
The current thermal differential value will
appear on the display .
- Press button or (fig. 40) to modify this
value as desired.
During operation, setting the differential to
0°C provides compliance with a minimum
start-up/shutdown time of one minute,
regardless of the measured room temper-
ature.
-Press button Pto exit programming.
38
37
40
39
X2

Programmazione
17
14  PROGRAMMING THE PROPOR
TIONAL/INTEGRAL VALUE
-Make sure that the unit is in OFF mode.
-Press button P twice (fig. 41).
Either the word or the word
will appear on the display.
-Press either the button or the button
(fig. 42) to select . The proportional inte-
gral control system is selected.
-Press the P button , appears on the
display (fig. 43).
-Press button or (fig. 44) so as to select
control system P1, P2, P3 or P4.
-With either P1, P2 or P3 selected, press the
Pbutton to exit programming.
If the P4 programme is selected then pro-
gramming continues as explained in the
following pages.
42
41
44
43
X2

Programmazione
18
- With the P4 programme selected, pressing
button Pcauses to appear on the
display (fig. 45).
-Press button or to select the desired
cycle time from between 5, 10, 15, 20, 25, 30,
35 or 40 minutes (fig. 46).
-Press button P(fig. 47).
appears on the display.
Programmes P1, P2 and P3 are fixed programmes, whereas programme P4 can be complete-
ly programmed by the user.
Programme Cycle
duration
Minimum
ON time
Proportional
Range System type
P1 10 minutes 1 minute 1.5°C Base for gas burner, con-
vector heaters, zone valves,
aluminium radiators
P2 5 minutes 1 minute 1.5°C Electric radiators
P3 20 minutes 2 minutes 1.5°C Radiant or underfloor sys-
tems, cooling
P4 5-10-15-20-
25-30-35-40
minutes
from 1 to
5 minutes
from 1°C to
3°C
Tab. 1
45
47
46

Programmazione
19
-Press either the button or the button
(fig. 48) to select the minimum start-up and
shut-down times between 1 and 5 minutes.
-Press button P(fig. 49).
appears on the display.
-Press either the button or the button
(fig. 50) to modify the proportional range
between 1 and 3°C.
-Press button Pto exit programming.
All parameters for the proportional-integral
setting are saved to permanent memo-
ry. See chapter 14.
48
50
49

Programmazione
20
15  TEMPERATURE SETPOINT
ADJUSTMENT BLOCKING
Once all of the temperature control levels
both for heating and cooling have been set:
- Open the cover.
- Press buttons Pand for three seconds.
Either or will appear on the
display (fig. 51).
- Press the or buttons (fig. 53) - select
to block set-point adjustments or to
unblock adjustments.
When temperature set-points adjustments are
blocked this icon appears on the display
(fig. 52).
- Press buttons Pand to exit program-
ming.
Note. After five seconds the display will auto-
matically exit programming mode.
- Close the cover.
16  REMOTE CONTROL
In order to enable remote control operation:
- Open the cover.
- Press button . (fig. 53).
Either the symbol or will appear
on the display.
- Using buttons and (fig. 54) select
to enable the heating mode remote control
input or to enable the cooling mode
remote control input or to complete-
ly disable remote control (fig. 55).
- Press button to exit programming
-Close the cover.
NOTE. The remote control will activate the
Comfort temperature control level in heating
or cooling mode.
51
53
52
54
55