Instruction Manual for EPH CONTROLS models including: CRTP2, CRTP2 Room Thermostat, Room Thermostat, Thermostat
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DocumentDocumentPage 1 of 3 CRTP2 Room Thermostat Battery Operated Operating Instructions Contents 1. Factory default settings 2. Specification & wiring 3. Mounting 4. Installation 5. Wiring diagram 6. Frost protection 7. Button / symbol description 8. Resetting the thermostat 9. Keypad lock and unlock 10. Setting the date, time and operating mode 11. Factory default program settings 12. Adjusting the program settings for 5/2d 13. Temporary override (Manual) 14. Permanent override (Hold) 15. Adjusting the switching differential 16. Replacing the batteries 17. Installer Menu Prior to setting the thermostat, it is neccessary to complete all required settings described in this section. CAUTION! Before commencing any work on the electrical connections, you must first disconnect the thermostat from the mains. None of the 230V connections must be live until the installation has been completed and the housing is closed. Only qualified electricians or authorised service staff are permitted to open the thermostat. There are parts that may carry mains voltage behind the cover. The thermostat must not be left unsupervised when open. (Prevent non specialists and especially children from gaining access to it.) Important: Keep this document 1. Factory default settings Contacts: Volt Free Temperature indicator: °C Switching differential: 0.4°C In built frost protection: 5°C High and Low temp. limitation: Off Clock: 24 hours Keypad lock: Off 5. Wiring diagram INTERNAL WIRING DIAGRAM CRTP2 3 21 ON COM If mains voltage output is required, 230V must be connected to terminal 2. 2. Specifications & wiring Power supply: Power consumption: Temp. control range: Ambient temperature: Contact rating: Dimensions: Temperature sensor: Switching differential: Frost protection: 2 x AA Alkaline Battery 8 VA 5 ... 35°C 0 ... 50°C 8A 230Vac 84 x 84 x 30mm NTC 10K Ohm @ 25°C Adjustable from 0.2/0.4/0.6/0.8/1.0°C Only operational in stand by mode 3. Mounting The mounting height should be 1.5 meters above the floor level. The thermostat should be wall mounted in the room where the heating is to be controlled. The place of installation should be chosen so that the sensor can measure the room temperature as accurately as possible. Choose the mounting location to prevent direct exposure to sunlight or other heating / cooling sources when mounted. The unit can be fitted to: 1. Recessed conduit boxes 2. Surface mounting boxes 3. Directly on walls. 4. Installation Slacken the fastening screw on the bottom of the thermostat with a philips head screwdriver. The thermostat is hinged and can be opened 180 degrees. Mount the unit as described in section 3. Wire the thermostat according to the wiring diagram. Close the thermostat and tighten the fastening screw. 6. Frost protection 5°C Frost protection is built into this thermostat, it is pre fixed at 5°C and is not adjustable. It will only be activated when the thermostat is in the stand by mode and the room temperature reaches 5°C. 7. Button / Symbol description Keypad lock symbol Heating ON symbol Current programme Program P3 On / Standby symbol OK button Day of the week Reset button Set point increase Set point decrease Hold button On / Standby button Set button EPH Controls Ireland technical@ephcontrols.com www.ephcontrols.com EPH Controls UK technical@ephcontrols.com www.ephcontrols.co.uk 20221013_CRTP2_OpIns_PK Page 2 of 3 CRTP2 Room Thermostat Battery Operated Operating Instructions 8. Resetting the thermostat It is necessary to reset the thermostat prior to initial programming. Press the RESET button on the side of the thermostat. `NO' will appear on the screen. Press the button. `YES' will appear on the screen. Press the `OK' button to return to normal operation. 9. Keypad lock and unlock OFF To lock the keypad, press and hold the and buttons for 10 seconds. will appear on the screen. The keypad is now locked. To unlock the keypad, press and hold the and buttons for 10 seconds. will disappear from the screen. The keypad is now unlocked. 10. Setting the date, time and operating mode Press the Set button once. `Set Date Year' will appear on the screen. Press the or buttons to adjust the year. Press the `OK' button. Press the or buttons to adjust the month. Press the `OK' button. Press the or buttons to adjust the day. Press the `OK' button. Press the or buttons to adjust the hour. Press the `OK' button. Press the or buttons to adjust the minute. Press the `OK' button. Press the or buttons to adjust from 5/2d to 7d or 24h mode. Press the button or wait 10 seconds and the thermostat will return to normal operation. 11. Factory program setting 5 / 2d P1 Mon-Fri 06:30 21°C Sat-Sun 08:00 21°C P1 Mon-Fri 06:30 21°C 08:00 Sat-Sun 21°C Everyday P1 06:30 21°C P2 08:00 18°C 10:00 18°C P2 08:00 18°C 10:00 18°C P2 08:00 18°C 5/2D P3 P4 12:00 14:00 21°C 18°C 12:00 14:00 21°C 18°C 7D P3 12:00 21°C 12:00 21°C P4 14:00 18°C 14:00 18°C 24H P3 P4 12:00 14:00 21°C 18°C P5 17:30 21°C 17:30 21°C P5 17:30 21°C 17:30 21°C P5 17:30 21°C P6 22:00 16°C 23:00 16°C P6 22:00 16°C 23:00 16°C P6 22:00 16°C 12. Adjusting the program settings for 5/2d Press the Set button twice. Programming for Monday to Friday is now selected. Press the and buttons to adjust the P1 time. Press the `OK' button. Press the and buttons to adjust the P1 temp. Press the `OK' button. Repeat this process to adjust P2 to P6 times and temperatures. Press the Set button. Programming for Saturday to Sunday is now selected. Press the and buttons to adjust the P1 time. Press the `OK' button. Press the and buttons to adjust the P1 temp. Press the `OK' button. Repeat this process to adjust P2 to P6 times and temperatures. Press the button to return to automatic mode. If 7 D mode is selected, you can program each day of the week with 6 individual times and temperatures. If 24H mode is selected, you can only program each day of the week with the same 6 times and temperatures. 13. Temporary override (Manual) In this mode the thermostat will switch to the temperature set by the user until the next program is activated. Press the and buttons to adjust the temperature setpoint. `Manual' will appear on the screen. Press `OK' or after 10 seconds the thermostat will operate in this temporary override. Press the button to return to automatic mode. 14. Permanent override (Hold) In this mode the thermostat will operate to the temperate set by the user. Press the Hold button. `Hold' will appear on the screen. Press the and buttons to adjust the temperature setpoint. Press `OK' or after 10 seconds the thermostat will operate in this permanent override. Press the button to return to automatic mode. 15. Adjusting the switching differential 0.4°C Press the `OK' and `Hold' buttons for 5 seconds. `0.4°C' will appear on the screen. Press the up or down buttons to adjust from 0.2, 0.4, 0.6, 0.8 or 1C. Press the button to return to normal operation. 16. Replacing the batteries Slacken the fastening screw on the bottom of the thermostat with a philips head screwdriver. The thermostat is hinged and can be opened 180 degrees. Replace the batteries with 2 x AA Alkaline batteries. Close the thermostat and tighten the fastening screw. EPH Controls Ireland technical@ephcontrols.com www.ephcontrols.com EPH Controls UK technical@ephcontrols.com www.ephcontrols.co.uk 20221013_CRTP2_OpIns_PK Page 3 of 3 CRTP2 Room Thermostat Battery Operated Operating Instructions 17. Installer menu To access the installer menu, you must hold OK and for 5 seconds. When in the installer menu, press or and OK to navigate and select. Normal Mode (Nor) When the thermostat is in Normal mode, the thermostat will try to reach the target temperature after the program changes. Example: 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 06:30am and the room temperature will start to increase then. To return to main menu, press OK to select Nor Optimum Start Mode (OS) Boiler Plus When the thermostat is in Optimum Start mode, the thermostat will try to reach the target temperature by the start time of the next switching time. This is done by setting the Ti (time interval) on the thermostat in this menu to 10, 15 or 20. This will allow the thermostat 10 mins, 15 mins or 20 mins to increase the room temperature by 1°C. Ti can be set when OS is selected in the installer menu. 20°C To return to main menu, press OK to select required Ti To achieve the target temperature when the program starts, the thermostat will read: 1. The Room Temperature (RT) 2. The Setpoint Temperature (ST) 3. The Target Temperature Difference (TTD) is the difference between the setpoint temperature and the room temperature . 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 if the temperature is increasing too quickly. Optimum Start Time (Mins) Optimum Start Control Graph with Ti = 20 0 20 40 60 80 100 120 140 160 180 9 87654321 Target Temperature Difference °C TTD Example when Ti = 20 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 05:30am to reach 21°C for 06:30am @ Ti=20. 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. Optimum Start Time (Mins) Optimum Start Time (Mins) Optimum Start Control Graph with Ti = 15 0 15 30 45 60 75 90 105 120 135 9 8 7 6 5 4 3 21 Target Temperature Difference °C TTD Optimum Start Control Graph with Ti = 10 0 10 20 30 40 50 60 70 80 90 9 8 7 6 5 4 3 21 Target Temperature Difference °C TTD EPH Controls Ireland technical@ephcontrols.com www.ephcontrols.com EPH Controls UK technical@ephcontrols.com www.ephcontrols.co.uk 20221013_CRTP2_OpIns_PK