TEC 950S User manual

TEC
ART. 950S
InSTAllATIon Installation
The 950S chronothermostat is a daily and weekly electronic chronothermostat that permits the
programming of the temperature of your home every hour of the day, every day of the week.
950S is equipped with a backlight display and a graphic visualisation of the programmed temperature
that can be modified by simple and functional commands that facilitate the programming.
950S avoids wasting energy by activating the heating or air-conditioning system only when needed.
950S can be directly installed on a 3 module recess box or on the wall. In either cases, it is advisable to
position it at a height of 1,5 meters from the wall, in a dry place, away from draughts and heat sources.
INSTALLATION ONTO PATTRESS BOX 503
After connecting the wiring, fix the BASE PLATE (with the slots of the FLAP at the bottom) directly onto the
three-gang pattress box utilizing the type “A” screws supplied (Fig. 2).
Lift the BATTERY COVER and fix the CHRONOTHERMOSTAT UNIT to the BASE PLATE utilizing the type “B”
screws (Fig. 3).
Complete the installation by lowering the BATTERY COVER.
Digital electronic room chronothermostat
Connection to burner, wall-mounted
boiler, air conditioning system, spring-
return zone valve.
Connection to zone valve.
NC C NO
NC
L N
OPEN
CLOSE
950S
1 2 3
CNO
950S
1 2 3
L N
U
Fig.1
Fig.2
A B C
Screw and plugs supplied
Pattress box
Flap Slots
Screws “A”
Base
Fig.3
Chronothermostat unit
Battery Cover
Screws “B”
Base
WALL INSTALLATION
After fixing the BASE PLATE (with the slots of the FLAP at the bottom) to the wall using the wall plugs and
supplied type “C” screws, electrically connect the chronothermostat and fix it to the BASE PLATE using the
type “B” screws. Complete the installation by lowering the BATTERY COVER.
Battery Cover
Chronothermostat unit
Flap Slots
Screws “B”
Screws “C”
Base
Base

TEC
ART. 950S
Power supply
950S is powered by two AA 1.5V alkaline batteries that ensure the chronothermostat operates for at least
two years.
To insert the batteries, slide out the BATTERY COVER and position the batteries in the correct polarity
direction as indicated inside the compartment (Fig. 4).
905S is equipped with two battery warning discharge levels. When the first level is superseded the
symbol BAT appears ( ) whilst the chronothermostat continues to function correctly.
On reaching the second level, the chronothermostat completely blocks its functions of thermoregulation
whilst the display shows the hour, day and the flashing symbol of the discharged battery ( ).
Whilst substituting the batteries, the data remains memorized for 30 seconds in the absence of power.
Digital electronic room chronothermostat
Fig.4
Initialisation
As soon as 950S is fed power it carries out a control cycle switching on all segments of the display and
activating the charge for a few seconds.
If the initialization might prejudice the correct functioning of the charge, power up the chronothermostat
before carrying out the electrical connections.
Functioning and programming
A fundamental part of the chronothermostat is the backlight graphic display that shows a diagram of 24
columns representing the 24 hours of the day and the height of each column indicates the programmed
temperature for that hour.
The segment at the top on the right (A in Fig.5), in correspondence to the overprinted writing indicates
the day to which the programme refers. The programmed temperature (B in Fig.5) is visualised at the top
on the right whilst programming and is identified by the day flashing and the symbol “C” indicating the °C.
During normal functioning, the hour or the ambient temperature are alternately visualised by pressing the
°C/h key (Fig.5).
A standard utilization diagram is shown once the 950S chronothermostat is powered on; the clock starts
at 00.00 of Monday (LU).
To modify the programme, move to the desired day using the DAY key (Fig.5) and adjust the daily graphic
utilizing the four central keys designed in the shape of a cross. The +h and -h keys (Fig.5) shift the cursor
horizontally along the HOUR axis, whilst the +°C and -°C keys (Fig.5) adjust the set temperature.
The weekly temperature programme can be modified at any moment by utilising the four central keys
designed in the shape of a cross (+h, -h, +°C and -°C) and the DAY key.
The minimum increase/decrease of the set temperature using the +°C and -°C keys is 0.1°C. Keeping +°C or
-°C key pressed the increase/decrease becomes 0.2°C.
After programming the first day, the following days can be programmed in two different ways:
- Pressing the DAY key (F in Fig.5), the following day is visualized displaying the memorized programme (if
the previous programmed day does not exist, the standard graphic is visualized) that can be modified as
previously described.
- Copying the day previously programmed into the successive day using the COPY function.

TEC
ART. 950S
Copy key
To copy the programme of the day that was previously programmed in other days, press the COPY key for
two seconds.
The word COPY appears on the display and the cursor of the day in which the programme is to be copied
flashes.
Using the +h or -h key scroll the days of the week and to confirm the DAY in which to copy the programme
press the COPY key.
To exit from the COPY function, wait a few seconds without pressing any key. Having finished programming
the whole week, update the hour and the day by pressing the SET key using a pointed object (Fig. 5).
Set key
The HOUR, MINUTES and DAY can be updated using the SET key (G in Fig.5).
Pressing the SET key, the HOUR starts flashing.
The current HOUR is adjusted the using the +°C and -°C keys.
Pressing the +h key, the programming sequence shifts to the MINUTES which starts to flash.
The MINUTES are adjusted using the +°C and -°C keys.
Pressing the +h key, the programming sequence shifts to the DAY which starts to flash.
The DAY is adjusted using the +°C and -°C keys.
From this moment the 950S chronothermostat starts its normal functioning, indicating each upload
inserted (heating or air-conditioning) by the lighting up of the flame symbol on the display (Fig. 5).
Manual functioning
Pressing the AUT/MAN key (Fig.5) the chronothermostat goes into manual mode by closing the graphic
display (which remains memorized) and lighting up the hand symbol (Fig. 5).
Now the 950S chronothermostat behaves like a normal ambience thermostat where the adjustment of the
temperature is made by using the +°C and -°C keys (O and P in Fig.5).
The set temperature read on the display remains as long as the chronothermostat is in manual mode (press
the AUT/MAN key to pass to automatic mode).
Off key
The chronothermostat is switched off by pressing the key (R in Fig.5) for two seconds.
The 950S will deactivate the functions relative to the set programmes, which anyway remain memorized,
and will alternately visualize the word OFF with the current hour and the detected temperature.
To visualize the HOUR instead of the temperature, press the °C/h key.
When the chronothermostat is switched off, the ANTI-FREEZE FUNCTION remains active. If the ambient
temperature detected drops below 7°C (7°C – 0.2°C = 6.8°C), the device activates the heating system to
keep the water circulating to stop ice forming in the tubes.
Reset function
If it becomes necessary to cancel the set programme (e.g., after a programming test), simultaneously press
the AUT/MAN and COPY keys (T and H in Fig.5) for approximately two seconds.
The 950S chronothermostat restarts the initialisation procedure described previously.
Segment indicating the day
LU = Monday
MA = Tuesday
ME = Wednesday
GI = Thursday
VE = Friday
SA = Saturday
DO = Sunday
Indicators
Digital electronic room chronothermostat
WINTER function mode indication
SUMMER function mode indication
MANUAL function mode indication
DISCHARGED battery indicator
Relay contact closed indicator

TEC
ART. 950S
Digital electronic room chronothermostat
TRQNOP MF H
set
SIAC BDL
E
G
Fig.5
pos.description
ASegment indicating the current day or the programmed day, whilst programming.
BNumerical display indicating the current hour or the ambient temperature alternately made visible by pressing the
E key. Whilst programming, it indicates the set temperature.
CFlashing segment that indicates the external temperature or, whilst programming, the set temperature.
DBattery cover.
EKey that permits the alternate visualisation of the current hour and the ambient temperature. It also permits the
user to exit from the setting programme.
FKey for scrolling the days whilst programming.
GRecessed key for adjusting the HOUR, MINUTES and DAY.
HKey for copying the programme of the day visualised to another day of the week.
ITemperature scale for functioning in WINTER mode (INV).
LTemperature scale for functioning in SUMMER mode (EST).
MKey for increasing the HOURS whilst programming.
NKey for decreasing the HOURS whilst programming.
OKey for increasing the temperature whilst programming.
PKey for decreasing the temperature whilst programming.
QDaily hour scale.
RON/OFF key.
SKey for selecting the WINTER (INV) programme or SUMMER (EST) programme.
TKey for selecting the automatic (AUT) programme or manual (MAN) programme