SUMMARY
1. Introduction pag. 3
2. Technical data 4
3. Display readings key 6
4. Chronothermostat controls key 7
5. Dimensions 8
6. Installation and connections 9
7. Chronothermostat start-up 16
8. Clock setting 16
9. Program setting 19
10. Temperature setting 21
11. Normal operation conditions 22
12. Override mode 22
13. Summer/winter setting 23
14. Differential setting 24
15. Knob lock 24
16. Unit reset 25
17. Troubleshooting 26
2
LIBR. CRX/E INGLESE 24-01-2000 16:42 Pagina 3
1. INTRODUCTION
Thank you for your confidence in our company and for choosing our products.
This is an easy-to-use, high-styling design, 7-DAY electronic PROGRAMMABLE THERMOSTAT. It allows an extremely accura-
te room temperature adjustment in the hosting room;thus meeting any users' needs as far as room COMFORT
IN ACCORDANCE WITH THE STANDARDS:
• EN 60730-1 and later updating
• EN 60730-2-7
• EN 60730-2-9
3
IN ACCORDANCE WITH THE GUIDELINES:
• B.T.73/23/EEC
• E.M.C.89/336/EEC and later updating 93/68/EEC
LIBR. CRX/E INGLESE 24-01-2000 16:42 Pagina 4
2. TECHNICAL DATA
POWER SUPPLY= N° 2 1.5V alkaline batteries, type LR6
NORMAL TEMPERATURE RANGE “T1” = 5÷30°C
REDUCED TEMPERATURE RANGE “T2” = 6°/14°/16°/18°C (winter mode)
38°/30°/28°/26°C (summer mode)
ROOM TEMPERATURE RANGE ON DISPLAY= 0/40°C (accuracy 0.1°C)
TEMPERATURE UPDATING= once a minute
ADJUSTABLE TEMPERATURE DIFFERENTIAL= 0.2K or 0.8K
SENSING ELEMENT = NTC 2%
DEGREE OF PROTECTION= IP 20
OUTPUT= switching relay
CONTACTS RATING= 5(0.5)A/250V~
SWITCH ACTION= 1BU
INSTALLATION LOCATION = normal environment
MAXIMUM STANDING TEMPERATURE= 50°C
STORAGE TEMPERATURE= 0÷60°C
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ANTIFROST= 6°C fixed
PROGRAMMING= weekly
PROGRAM SETTING = by micro-switches/buttons
MINIMUM PROGRAMMING RANGE= 1 hour
SOFTWARE CLASS A
SET-TEMPERATURE OVERRIDE MODE
DISPLAY LCD
WINTER/SUMMER SWITCHING (heating/ air conditioning)
UNIT RESET
MOUNTING= to the wall
5
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3. DISPLAY READINGS KEY
✲
6
Operating program
activated
Low battery function
On display: current
time and room
temperature
Days of the week
Summer
(air conditioning)
Winter
(heating)
Reduced
temperature “T2”
Antifrost
Proper set
confirmation
Time/temperature chart
of the activated program
Operating
system
“Override” mode
activated
LIBR. CRX/E INGLESE 24-01-2000 16:42 Pagina 7
4. CHRONOTHERMOSTAT CONTROLS KEY
✲
7
Reset button
Reduced temperature “T2”
setting button
Programming confirmation
button
Knob for normal
temperature “T1” setting
Differential selector
Summer (
✲
) or winter ( )
mode selector
Override
button
Microswitches for current time
and operating setting
Access to the program
and day change button
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5. DIMENSIONS
8
60 mm
83,5 mm
27 mm
1,5 mm
130 mm
88 mm
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6. INSTALLATION AND CONNECTIONS
SAFETY INSTRUCTIONS
Before connecting the chronothermostat, make sure that the UNIT TO BE CONTROLLED (boiler, pump, air conditioning
system, etc.) is NOT CONNECTED from the electrical source. Make also sure that the power supply is the same as the one
specified inside the chronothermostat base (250V~ max).
9
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NO
YES
PLACEMENT OF THE CHRONOTHERMOSTAT
Place the chronothermostat away from heat sources (radiators, sunrays, kitchens) and away from doors / windows, etc. Install
the thermostat 1.5 Mt from the floor.
10
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11
INSTALLA
TION
A) Open the front cover by lifting its left side
B) Remove the battery-compartment lid by pressing
along the arrow
...remove the base from the frontal part
of the chronothermostat....
C) Remove the screw inside the battery compartment. ...
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12
...then fix it to the wall according to installation requirements,
as shown in the figures.
Mounting on round box.Distance
between center lines of 60 mm.
Mounting on three module buit-in std box.
Distance between center lines of 83,5 mm.
Wall mounting
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13
D) Connect the wires to the terminals as per wiring diagram
(see next paragraph “wiring connections”), snap the unit
back to its base and tighten it with the provided screw.
E) Insert n° 2 1.5V alkaline batteries, type LR6
into the battery compartment, making sure that the proper
polarities are maintained.
N.B.Insert the first battery into the left side of the battery
compartment and the second one into the right side of the
compartment. Finally press on the second battery
so it fits properly.
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14
F) Close the battery compartment by matching the two top tabs in their slots (1) and then pressing on the bottom ones (2).
BA
TTERY REPLACEMENT
When the display shows a blinking “ ” (low batteries), the chronohermostat will still work properly for another month, after
that it will stop working and four “EEEE” will appear on the display (battery life:1 year).
To replace batteries, follow the steps A), B), E) and F) of the previous paragraph.
WARNING:
We recommend that the batteries be replaced on the heating system start-up.
Once the batteries are replaced, close the battery compartment lid, press the reset button (R) and reset the time as descri-
1
2
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15
bed in chapter 8 (clock setting).
WIRING CONNECTIONS
Connect the wires of UNIT TO BE CONTROLLED to terminal 1 and 2 of the chronothermostat (see wiring diagram).
WARNING:
We strongly recommend that, while installing the chronohermostat, all safety instructions and laws in force be strictly followed.
U= load
1= common contact
2= Normally Open contact
3= Normally Closed contact
12
U
N
L
3
T
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16
7. CHRONOTHERMOSTAT START-UP
After inserting the batteries, thus powering the chronothermostat, press the reset button (R) for 2-3 seconds with a pencil
point. All the available cursors and symbols will then be displayed for a few seconds (self-test).The chronothermostat is then
ready for CLOCK SETTING.
NOTE:
For a PROPER use of our product, from here on all the instruction paragraphs should be read in SEQUENCE, as per
manual!
8. CLOCK SETTING
During this step, the display shows two hour-digits and two
minute-digits.The first digit on the left will blink (fig.1).
Switching down or up the micro-switches positioned under the
digits from “
0 to 9”, will set the current time and day.
The following example shows how to set Wednesday, 09:55:
• Switch the micro-switch “
0” to set the first digit on the display
(the second digit will blink) (fig.2).
• Switch the micro-switch “
9” to set the second digit on the
display, thus completing the HOUR setting (the third digit will
(fig.1)
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blink) (fig.3).
• Switch the micro-switch “
5” to set the third digit on the display
(the fourth digit will blink) (fig.4).
• Switch again the micro-switch “
5” to set the fourth digit on the
display, thus completing the MINUTE setting (now the day-of-
the-week “little triangles” will be blinking: 1=Monday;
2=Tuesday …… 7=Sunday) (fig.5).
• Switch the micro-switch “
3” to set on the display the “little
triangle” positioned under the third day of the week
(Wednesday “3”).The CLOCK SETTING is now completed.
(fig.2)
(fig.3)
(fig.4)
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NOTE:
- When the CLOCK SETTING procedure is completed or in
case it is not completed within 10 minutes from start-up,
the chronothermostat will automatically start the “OVERRI-
DE” mode (shown by a blinking “F”, “T1” and the
“hours/temperature” chart on the display), assuring the
working at NORMAL temperature “T1”(“sun”knob) (fig.6).
- The CLOCK SETTING procedure may be start again at
any given time by pressing the reset button (R).
(fig.5)
(fig.6)
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9. PROGRAM SETTING
Only after the clock is set, the chronothermostat “weekly” pro-
gram may be set, according to the following instructions:
• Press the
D button: the “little triangle” (▲) will blink on the
display, pointing at Monday (day #1) (fig.7).
• Move up the switches (position “
T1 ✲”) for the amount of
hours you want the temperature set with the “sun
✲” knob
(NORMAL temperature). On the contrary, lower the switches
(position “
T2 ”), for the amount of hours you want the REDU-
CED temperature (
T2 button).
• Press
OK to CONFIRM and DISPLAY Monday's setting (fig. 8). If changes are to be made, just set the new settings by
micro-switches and then press
OK to confirm them.
• Press the
D button to switch to the next day:the “little triangle”
(
▲) will blink on the display, pointing at Tuesday (day #2) (fig.
9).The “hours/temperature” chart for Tuesday and for any other
day of the week is set as Monday's.
Once completed the weekly setting, with the “little triangle” (
▲)
blinking and pointing at Sunday (day #7) (fig.10), press the
D
button to immediately end the “PROGRAM SETTING” mode.
19
(fig.7)
(fig.8)
LIBR. CRX/E INGLESE 24-01-2000 16:42 Pagina 20
To ACTIVATE the program:
• Press the
F button and check if the symbol “clock” ( ) and
the reading “OK-OK”are on display (fig.11).
NOTE:
- During “PROGRAM SETTING” if there are no operations
for about one minute, the unit will automatically go back
to the starting mode.
- When first installed, the weekly program is set on
“T1”NORMAL temperature for every hour of the day
20
(fig.9)
(fig.10)
(fig.11)
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