EPH Controls CDTP2 Installation And Operation Manual
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EPH Controls CDTP2 Installation And Operation Manual

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CDTP2
Room Thermostat
Installation and Operation Guide

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Summary of Contents for EPH Controls CDTP2

  • Page 1 CDTP2 Room Thermostat Installation and Operation Guide...

  • Page 2: Table Of Contents

    Table of contents Installation Instructions Factory Default Settings Speci cations LCD Display Buttons Wiring Mounting & Installation Operating Instructions Adjusting the Target Temperature Locking the Keypad Backlight Mode Selection Setting the Date, Time and Programming Mode Holiday Mode How your Programmable Thermostat works Factory Program Setting Programming Modes...
  • Page 3 Adjust the Program Setting in 5/2 Day Mode Temporary Override / Permanent Override Boost Function Menu Function P0 1 Operating Mode Normal Mode (Nor) Optimum Start Control (OS) Time Proportional Integral Mode (TPI) P0 2 Setting High & Low Limits P0 3 Hysteresis HOn &...

  • Page 4: Installation Instructions

    Mains operated programmable Room Thermostat Installation Instructions...

  • Page 5: Factory Default Settings

    On (5˚C) HYS On: 0.4˚C HYS OFF: 0.0˚C Daylight Saving Time (DST): Note: Frost protection is built into this thermostat. It will only be activated when the thermostat is in OFF position and the temperature reaches 5˚C. EPH Controls Ltd.

  • Page 6: Speci Cations

    7(3)A 230VAC Dimensions: 91 x 91 x 26mm Internal Temperature sensor: NTC 100K Program memory backup: 3 months Battery: LIR2032 Backlight: White IP rating: IP20 Pollution degree: Hysteresis Adjustable from 0 to 1°C (Switching di erential) 0.1°C increments Automatic action: CDTP2...

  • Page 7: Lcd Display

    Displays when setting holiday mode. [11] Displays when thermostat is in boost mode. Set room temp Tue Wed Thu Fri sat sun [12] Displays current time program. [12] [11] holiday to from auto off man hi lo limit [10] EPH Controls Ltd.

  • Page 8: Buttons

    Buttons Reset button Menu button OK Button Time Down Button Button Button Button CDTP2...

  • Page 9: Wiring

    Wiring Terminal Connections Neutral In Live In Terminal 1 OFF - N/C Normally closed connection Terminal 2 COM - Common connection Terminal 3 ON - N/O Normally open connection EPH Controls Ltd.

  • Page 10: Mounting & Installation

    Before commencing installation, the thermostat must be rst disconnected ƒ from the mains. This thermostat can be mounted in the following ways: 1) Directly mounted on wall 2) To a recessed conduit box 3) To a surface mounting box CDTP2...
  • Page 11 Wire the thermostat according to the diagram on page 7. Screw the backplate onto a back box or directly to the surface. Close the front housing and tighten the fastening screw on the bottom of the thermostat. EPH Controls Ltd.
  • Page 12 45 113 CDTP2...

  • Page 13: Operating Instructions

    Mains operated programmable Room Thermostat Operating Instructions...

  • Page 14: Adjusting The Target Temperature

    To lock the thermostat, press and hold for 10 seconds. will appear on the screen. The buttons are now disabled. To unlock the thermostat, press and hold for 10 seconds. will disappear from the screen. The buttons are now enabled. CDTP2...

  • Page 15: Backlight

    The backlight is permanently on. To adjust the backlight setting, press and hold for 10 seconds. ‘AUt’ appears on the screen. to change the mode between AUTO, ON and OFF. Press to con rm selection and to return to normal operation. EPH Controls Ltd.

  • Page 16: Mode Selection

    When in the OFF mode the thermostat will display the current room temperature and the word ‘OFF’ . When in the AUTO mode the thermostat will display the current room temperature, the number of the current program and the word ‘AUTO’ . CDTP2...

  • Page 17: Setting The Date, Time And Programming Mode

    ‘HOLIDAY TO’ will appear on the screen. Press to set time for holiday mode to end. The thermostat will switch o for the holiday period. Press to cancel the holiday function. EPH Controls Ltd.

  • Page 18: How Your Programmable Thermostat Works

    ON if the room temperature is lower than the target temperature for the current period. Example: If P1 is set to be 21˚C at 6am, and if P2 is set to be 10˚C at 8am, the thermostat will look for the temperature to be 21˚C between 6am and 8am. CDTP2...

  • Page 19: Factory Program Setting

    17:30 22:00 Mon-Fri 21˚C 10˚C 10˚C 10˚C 21˚C 10˚C 08:00 10:00 12:00 14:00 17:30 23:00 Sat-Sun 21˚C 10˚C 10˚C 10˚C 21˚C 10˚C 24 Hour 06:30 08:00 12:00 14:00 17:30 22:00 Everyday 21˚C 10˚C 10˚C 10˚C 21˚C 10˚C EPH Controls Ltd.

  • Page 20: Programming Modes

    Programming Modes The CDTP2 Room Thermostat has the following programming modes available: 5/2 Day mode Programing Monday to Friday as one block and Saturday and Sunday as a 2nd block. Each block can have 6 di erent times and target temperatures.

  • Page 21: Adjust The Program Setting In 5/2 Day Mode

    P1 temperature. Press Repeat this process to adjust P2 to P6 times & temperatures. Press Press to return to automatic mode. While in programming mode, pressing will jump to the next day (block of days). EPH Controls Ltd.

  • Page 22: Temporary Override / Permanent Override

    ‘MAN’ or manual mode (Permanent Override). Press Press to adjust the target temperature. Press or wait 5 seconds, the thermostat will operate to this target temperature. To cancel permanent override, press until the ‘AUTO’ or ‘OFF’ mode are selected. CDTP2...

  • Page 23: Boost Function

    5 seconds for the boost to activate. ‘BOOST TO’ will now be displayed on the screen with the end time for the boost program. Press again to deactivate the boost, the thermostat will revert to its previous operating mode. EPH Controls Ltd.

  • Page 24: Menu Function P0 1 Operating Mode

    TPI mode. The default setting is Normal. Press and hold & together for 5 seconds. ‘P01’ will appear on the screen. Press to select. to select between: nOr (Normal mode) OS (Optimum start mode) tPi (Time proportional integral mode) Press to con rm the mode. CDTP2...

  • Page 25: Normal Mode (Nor)

    When the temperature rises above the target temperature, will disappear, and the thermostat will cancel the demand for heat. Graph (23.1): Normal Mode (On / O Control) Temp 22˚C Target Temperature 21˚C 20˚C 19˚C 18˚C 17˚C Time Minutes EPH Controls Ltd.

  • Page 26: Optimum Start Control (Os)

    The time (in minutes) that it will take to overcome (TTD) is called Optimum Start Time (OST) and its maximum value is 3 hours = 180 mins. This is subtracted from the start time. As the temperature increases the thermostat will recalculate the OST. CDTP2...
  • Page 27 Example when Ti = 10 Program 1 on the thermostat is 21°C for 06:30am and the room temperature is 18°C. The thermostat will start the heating at 06:00am to reach 21°C for 06:30am @ Ti=10. Target Temperature Di erence ˚C EPH Controls Ltd.

  • Page 28: Time Proportional Integral Mode (Tpi)

    2. The Proportional Bandwith. CyC – Number of Heating Cycles per hour 6 Cycles This value will decide how often the thermostat will cycle the heating on and o when trying to achieve the target temperature. You can select 2/3/6 or 12. CDTP2...
  • Page 29 TPI control. You can set this temperature from 1.5°C to 3.0°C in 0.1°C increments. Graph (27.1): TPI Control Temp 22˚C 21˚C Target Temperature 20˚C Proportional Bandwidth 19˚C 18˚C 17˚C Time Minutes Heating On Heating O EPH Controls Ltd.
  • Page 30 Once TPI mode is selected, ‘CYC’ and ‘06’ will appear on the screen. to select from 2, 3, 6 or 12. Press to con rm. ‘P Band’ and ‘2.0’ will appear on the screen. to select from 1.5 to 3.0. Press to con rm. Press to return to normal operation. CDTP2...

  • Page 31: P02 Setting High & Low Limits

    ‘LOW LIMIT’ will appear, the temperature will begin to ash. to select the low limit for the thermostat. Press to con rm. Press to return to normal operation. When this setting is enabled, ‘LIMIT’ will appear permanently on the screen. EPH Controls Ltd.

  • Page 32: P03 Hysteresis Hon & Hoff

    To access this setting, press and hold & together for 5 seconds. ‘P01’ will appear on the screen. Press until ‘P03’ appears on the screen. Press ‘HOn’ will appear on the screen and the di erential temperature will begin to ash. CDTP2...
  • Page 33 ‘HOn’ temperature, press con rm. ‘HOFF’ will appear on the screen and the di erential temperature will begin to ash. & to select the ‘HOFF’ temperature. Press to con rm. Press to return to normal operation. EPH Controls Ltd.

  • Page 34: P04 Calibrate

    ‘P01’ will appear on the screen. Press until ‘P04’ appears on the screen. Press to select. ‘CALI’ and the actual temperature will appear on the screen. Press to calibrate the temperature. Press to con rm the temperature. Press to return to normal operation. CDTP2...

  • Page 35: Resetting The Thermostat

    Press the reset button and release it. ‘RST’ will appear and ‘NO’ will ash on the screen. Press ‘YES’ will ash on the screen. Press to con rm. The thermostat will restart and revert to its factory settings. EPH Controls Ltd.
  • Page 36 EPH Controls IE technical@ephcontrols.com www.ephcontrols.com/contact-us +353 21 471 8440 Cork, T12 W665 EPH Controls UK technical@ephcontrols.co.uk www.ephcontrols.co.uk/contact-us +44 1933 322 072 Harrow, HA1 1BD...

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