Imit CRX/E Plus Instruction Manual
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Imit CRX/E Plus Instruction Manual

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CRX/E PLUS
Instruction manual

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Summary of Contents for Imit CRX/E Plus

  • Page 1 CRX/E PLUS Instruction manual...

  • Page 2: Table Of Contents

    SUMMARY 1. Introduction pag. 3 2. Technical data 3. Display readings key 4. Chronothermostat controls key 5. Dimensions 6. Installation and connections 7. Chronothermostat start-up 8. Clock setting 9. Program setting 10. Temperature setting 11. Normal operation conditions 12. Override mode 13.

  • Page 3: Introduction

    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 GUIDELINES: IN ACCORDANCE WITH THE STANDARDS: •...

  • Page 4: Technical Data

    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...
  • Page 5 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...

  • Page 6: Display Readings Key

    3. DISPLAY READINGS KEY Operating Reduced Days of the week system temperature “T2” Summer (air conditioning) Winter On display: current (heating) time and room temperature Antifrost Low battery function Proper set confirmation Operating program “Override” mode Time/temperature chart activated activated of the activated program...

  • Page 7: Chronothermostat Controls Key

    4. CHRONOTHERMOSTAT CONTROLS KEY Reset button Programming confirmation button Knob for normal temperature “T1” setting Override button Differential selector Summer ( ) or winter ( ) mode selector Reduced temperature “T2” Microswitches for current time Access to the program setting button and operating setting and day change button...

  • Page 8: Dimensions

    5. DIMENSIONS 60 mm 130 mm 1,5 mm 27 mm 83,5 mm...

  • Page 9: Installation And Connections

    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).
  • Page 10 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.
  • Page 11 INSTALLATION C) Remove the screw inside the battery compartment..A) Open the front cover by lifting its left side B) Remove the battery-compartment lid by pressing ...remove the base from the frontal part of the chronothermostat..along the arrow...
  • Page 12 ... then fix it to the wall according to installation requirements, as shown in the figures. Mounting on three module buit-in std box. Wall mounting Distance between center lines of 83,5 mm. Mounting on round box. Distance between center lines of 60 mm.
  • Page 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.
  • Page 14 F) Close the battery compartment by matching the two top tabs in their slots (1) and then pressing on the bottom ones (2). BATTERY 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”...
  • Page 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...

  • Page 16: Chronothermostat Start-Up

    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.
  • Page 17 blink) (fig.3). • Switch the micro-switch “5” to set the third digit on the display (the fourth digit will blink) (fig.4). (fig. 2) • Switch again the micro-switch “5” to set the fourth digit on the display, thus completing the MINUTE setting (now the day-of- (fig.
  • Page 18 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”...

  • Page 19: Program Setting

    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). •...
  • Page 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.

  • Page 21: Temperature Setting

    10. TEMPERATURE SETTING • To set the NORMAL temperature “T1”, simply turn the knob “sun ” until the little reference triangle on the front of the chro- nothermostat points to the desired temperature on the temperature scale. • REDUCED temperature “T2” may be chosen among 6°C, 14°C, 16°C or 18°C in winter mode ( ), and among 38°C, 30°C, 28°C or 26°C in summer mode ( ), by pressing the T2 button in sequence (fig.

  • Page 22: Normal Operation Conditions

    11. NORMAL OPERATION CONDITIONS During “normal operation” the room temperature is displayed for 20 seconds (indicated by °C TA), alternating with the display of current time for 10 seconds. The following values are displayed as well (see chapter 3): The REDUCED temperature value (indicated by °C T2) The “hours/temperature”...

  • Page 23: Summer/Winter Setting

    ture "T2" (6°C/14°C/16°C/18°C or 38°C/30°C/28°C/26°C). • Press three times the F button to activate the NORMAL temperature “T1” (knob “sun ”) When in “override” the letter “F”, the override symbol ( ; T1 or T2) and the “hours/temperature” chart will blink on the display. (fig.13).

  • Page 24: Differential Setting

    14. DIFFERENTIAL SETTING The “differential” (∆t) is the difference between the room tem- perature when the heating system “goes off”, and the room temperature when it “comes on” again. EXAMPLE: Room temperature (heating system goes off) = 20°C Room temperature (heating system comes on) = 19,8°C ∆t = 0,2°C Two different differential values may be selected: 0,2°C (advi- sable for water-circulating systems, for example “radiators”), or...

  • Page 25: Unit Reset

    WARNING: THE REPLACEMENT OF THE KNOB WITH THE HOLE-CAP MUST BE CARRIED OUT ONLY BY QUALIFIED PERSON- NEL. (fig. 16) (fig. 17) (fig. 18) 16. UNIT RESET Pressing the reset button (R) does not modify the active operation program, but it takes the clock back to zero and the “T2” REDUCED temperature back to 16°C (winter mode) or 26°C (summer mode).

  • Page 26: Troubleshooting

    17. TROUBLESHOOTING PROBLEM POSSIBILE CAUSE SOLUTION The chronothermostat does not 1. Low batteries 1. Replace batteries 2. Check for proper polarities turn on 2. Batteries improperly installed 3. Press reset button (R) 3. False contact 4. Check the wiring of the load with 4.
  • Page 27 PROBLEM POSSIBILE CAUSE SOLUTION The displayed room temperature 9. Wrong location of the chronother- 9. Follow the instructions in chapter 6, does not correspond to the real one mostat in the installation room paragraph “placement”. 10.Air draft coming from the wire 10.Seal the conduit to prevent hot or conduit cold air drafts...

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