EPH Controls CP4B, Installation And Operation Manual

Page 1: ...Installation and Operation Guide Battery Powered Programmable Thermostat CP4B...

Page 2: ...6 Table of contents 17 18 19 19 20 Frost Protection Mounting Installation Resetting the thermostat Keypad lock and unlock Setting the date time programming mode and daylight saving time Button Descrip...

Page 3: ...Start Normal PO 1 Operating Mode Holiday Function Battery low warning Backlight mode selection Replacing the batteries PO 4 Calibrate the thermostat PO 5 Frost Protection PO 6 Exit Installer menu Ope...

Page 4: ...CP4B Room Thermostat Installation Instructions...

Page 5: ...ferential 0 4 C In built frost protection 5 C Not adjustable Clock 24 hours Keypad lock Off Operating mode 5 2 day Frost Protection 5 C Frost protection is built into this thermostat It is set at 5 C...

Page 6: ...ent Once a year Temp control range 5 35 C Ambient temperature 0 45 C Contact rating 8A 230Vac Dimensions 130 x 99 x 25mm Temperature sensor NTC 100K Ohm 25 C Temperature indication C Switching differe...

Page 7: ...s com If mains voltage output is required 230V must be connected to terminal COM Important Do not connect Mains Voltage to OpenTherm terminals Wiring Diagram ON O T OFF COM OpenTherm Internal Wiring D...

Page 8: ...ime only a higher and a lower temperature setpoint If the user does not want the thermostat to operate set the temperature for this time to be a low temperature The thermostat will turn ON if the room...

Page 9: ...ified electricians or authorised service staff are permitted to open the thermostat If the thermostat is used in a way not specified by the manufacturer its safety may be impaired Prior to setting the...

Page 10: ...voided when the thermostat is mounted 3 Lower the flap at the front of the thermostat There is a battery compartment located below the buttons Apply downward pressure to remove the cover 4 Remove the...

Page 11: ...9 www ephcontrols com 1 2 131 100 3 4 5 6...

Page 12: ...CP4B Room Thermostat Operating Instructions...

Page 13: ...11 www ephcontrols com LCD Symbol Description Operating mode Current program Day Month Day of the week Temperature Battery low symbol Heating on symbol Keypad lock symbol Current Time Boost to time...

Page 14: ...de Set point decrease Off mode Copy function Confirm button Reset button Program mode Boost mode AUTO TIME MAN HOL OFF COPY OK PROG BOOST Manual mode Off mode Program mode Set Date Time Holiday mode C...

Page 15: ...een 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 Press the button on the side of the thermostat...

Page 16: ...adjust the day Press OK Press the or buttons to adjust the hour Press OK Press the or buttons to adjust the minute Press OK Press the or buttons to adjust from 5 2d to 7d or 24h mode Press the or butt...

Page 17: ...C Sat Sun 08 00 10 00 12 00 14 00 17 30 23 00 21 C 10 C 10 C 10 C 21 C 10 C 7 Day P1 P2 P3 P4 P5 P6 Mon Fri 06 30 08 00 12 00 14 00 17 30 22 00 21 C 10 C 10 C 10 C 21 C 10 C Sat Sun 08 00 10 00 12 00...

Page 18: ...to Friday as one block and Saturday and Sunday as a second block Each block can have 6 different times and temperatures 7 Day mode Programming all 7 days individually with six different times and tem...

Page 19: ...r Saturday to Sunday is now selected Press the or buttons to adjust the P1 time Press OK Press the or buttons to adjust the P1 temperature Press OK Repeat this process to adjust P2 to P6 times and tem...

Page 20: ...amming mode When still on the day press the COPY button The day of the week that you have selected will be shown with COPY below it The next day will begin to flash on the top of the screen Press the...

Page 21: ...ss the OFF buttton and then press the AUTO button to return to the automatic mode Press the MAN button to enter the manual mode Permanent Override MAN will appear on the screen Press the or buttons to...

Page 22: ...re setpoint by pressing the or buttons Press the OK button or wait for 5 seconds for the boost to activate BOOST TO will now be displayed on the screen with the time that the thermostat is activated t...

Page 23: ...or buttons to adjust the day Press OK Press the or buttons to adjust the hour Press OK HOLIDAY TO will appear on screen Press the or buttons to adjust the year Press OK Press the or buttons to adjust...

Page 24: ...UTO On pressing any button the backlight stays on for 5 seconds To adjust the backlight setting lower the cover on the front of the unit Press the OK button for 5 seconds Press either the or buttons t...

Page 25: ...ries Lower the flap on the front of the thermostat There is a battery compartment located below the buttons Apply downward pressure to remove the cover Insert the 2 x AA batteries and the thermostat w...

Page 26: ...nd select Use AUTO MAN or OFF to go back a step P0 1 Mode Normal Optimum Start TPI P0 2 Hi Lo Limiting the Thermostat P0 3 Hysteresis Differential P0 4 Calibration P0 5 Frost Protection P0 6 Exit Inst...

Page 27: ...rature will start to increase then PO 1 Operating Mode Normal Optimum Start TPI OS Optimum Start Mode Boiler Plus When the thermostat is in Optimum Start mode the thermostat will try to reach the targ...

Page 28: ...he 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...

Page 29: ...tat will start the heating at 06 00am to reach 21 C for 06 30am Ti 10 0 20 40 60 80 100 120 140 160 180 Optimum Start Time Mins Target Temperature Difference C TTD 8 9 7 6 5 4 3 2 1 Optimum Start Cont...

Page 30: ...the temperature is falling so it doesn t undershoot the setpoint which will leave the user with a more comfortable level of heat There are 2 settings that will affect the thermostats operation 1 CYC...

Page 31: ...ample 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 but will sw...

Page 32: ...s menu allows the installer to change the switching differential of the thermostat when the temperature is rising and falling HOn is the fall in temperature Default 0 4 C This will allow a fall of 0 4...

Page 33: ...he or buttons This menu allows the installer to activate or de activate frost protection When frost protection is activated the thermostat will switch on the boiler when the temperature drops below 5...

Page 34: ...ture of the boiler The temperature can be set in 0 5 C increments by pressing the or buttons Press the OK button to select the desired temperature This menu is only available when the thermostat is co...

Page 35: ...ble below PO 7 OpenTherm Information Displayed on screen Description Remark tSEt Target water temp tFLO Outlet water temp trEt Return water temp tdH DHW temperature This is only visible if DHOP is On...

Page 36: ...at This menu is only available when the thermostat is connected to OpenTherm This menu allows the installer to configure the OpenTherm parameters To access the menu please enter the password 08 with t...

Page 37: ...allows users to select different climatic curves for weather compensation This only applies to boilers with an outside sensor connected 0 2 3 0 1 2 InFL t 4 Influence of room sensor on modulation of...

Page 38: ...Climatic Curve 100 3 2 5 2 1 5 1 2 1 0 8 0 6 0 4 0 2 80 60 40 20 20 16 12 8 4 0 4 8 12 16 This menu allows the installer to return to the main interface It is also possible to exit the installer menu...

Page 39: ...37 www ephcontrols com System architecture Example A 1 no Thermostat controlling OT Boiler CP4B Thermostat OpenTherm Boiler...

Page 40: ...EPH Controls UK 2020 EPH Controls Ltd sales ephcontrols com www ephcontrols com T 44 1933 626 396 F 44 1933 626 218 20201014_CP4B_DS_JW sales ephcontrols com www ephcontrols com T 353 21 434 6238 F 3...