8_716_115_495a 9/2/09 11:49 Page 1 INSTRUCTION MANUAL OPERATING AND INSTALLATION DT20RF PROGRAMMER DIGISTAT - Radio frequency controlled room thermostat with twin channel digital programmer FOR GREENSTAR CDi, GREENSTAR i JUNIOR AND GREENSTAR Si MODELS ALSO GREENSTAR i SYSTEM AND GREENSTAR CDi SYSTEM MODEL (ONLY WHEN USED WITH THE OPTIONAL INTEGRAL DIVERTER VALVE) UK/IE
8_716_115_495a 9/2/09 11:49 Page 2 MANUAL INFORMATION WORCESTER, BOSCH GROUP: PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE STARTING TECHNICAL 08705 266241 SERVICE 08457 256206 SPARES 01905 752571 THESE INSTRUCTIONS ARE APPLICABLE TO THE WORCESTER BOSCH MODEL(S) STATED ON THE FRONT COVER OF THIS MANUAL ONLY AND MUST NOT BE USED WITH ANY OTHER MAKE OR MODEL LITERATURE 01905 752556 TRAINING 01905 752526 SALES 01905 752640 WEBSITE worcester-bosch.co.
8_716_115_495a 9/2/09 11:49 Page 3 TABLE OF CONTENTS TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 DIGISTAT ROOM THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . .3 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . .3 ADVANCED SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 FAULT DIAGNOSIS/ BATTERY REPLACEMENT . . . . . . . . .9 DT20RF RECEIVER . . . . . . . . . . . . . . . . . . . . . . . . . .
8_716_115_495a 9/2/09 11:49 Page 4 TECHNICAL DATA DIGISTAT TRANSMITTER ROOM THERMOSTAT DT20RF RECEIVER Power supply 2xAA 1.5V alkaline batteries 24Vd.c. less than 65mA Radio frequency 433 MHz 433 MHz Radio signal range The range may be affected by the composition / density and number of walls between the Digistat RF and receiver. 30 metres typically, through two internal plasterboard walls and a ceiling. 26 metres typically, through three internal plasterboard walls and a ceiling.
8_716_115_495a 9/2/09 11:49 Page 5 DIGISTAT ROOM THERMOSTAT GENERAL INFORMATION What is a room thermostat? LCD Display Dial A room thermostat simply switches the heating system on and off as necessary. It works by sensing the air temperature, switching on the heating when the air temperature falls below the thermostat setting, and switching it off once this set temperature has been reached. Turning a room thermostat to a higher setting will not make the room heat up any faster.
8_716_115_495a 9/2/09 11:49 Page 6 DIGISTAT ROOM THERMOSTAT ADVANCED SETTING ADVANCED FEATURES Adjusting the Setpoint using the Preset Temperature Mode Change the temperature at the press of a button, for example, if you are going out to the shops for an hour you can reduce the temperature to save energy and then when you press the button again on your return the setpoint will return to the previous level.
8_716_115_495a 9/2/09 11:49 Page 7 DIGISTAT ROOM THERMOSTAT ADVANCED SETTING ºc 2. If you want to set a new setpoint, just rotate the dial until your required setpoint is shown on the display. After a couple of seconds the display will change to show the current room temperature as shown. 2 To change the user adjustable settings 1. To enter the User menu, press and hold the Set button for more than 5 but less than 10 seconds the display will show Pr (Preset temperature setting) as shown. 2.
_716_115_495a 9/2/09 11:49 Page 8 DIGISTAT ROOM THERMOSTAT ADVANCED SETTING Changing the Preset Temperature 1. To adjust the “Preset” temperature enter the User menu by pressing and holding the Set button for more than 5 but less than 10 seconds. 2. Rotate the dial until Pr is shown. 3. Press the set button and the display will show the current Preset setting. 4. Rotate the dial clockwise to increase the Preset temperature & anti-clockwise to reduce the Preset temperature. 5.
8_716_115_495a 9/2/09 11:49 Page 9 DIGISTAT ROOM THERMOSTAT ADVANCED SETTING Changing the Maximum Temperature Setting 1. To adjust the “Maximum” temperature enter the User menu by pressing and holding the Set button for more than 5 but less than 10 seconds. 2. Rotate the dial clockwise until ‘HI’ is showing. 2 3. Then press the Set button, the current setting is shown. 4. Rotate the dial clockwise to increase the maximum temperature setting (max. 30°C) as shown.
8_716_115_495a 9/2/09 11:49 Page 10 DIGISTAT ROOM THERMOSTAT ADVANCED SETTING Changing the Minimum Temperature Setting 1. To adjust the “Preset” temperature enter the User menu by pressing and holding the Set button for more than 5 but less than 10 seconds. 2. Rotate the dial clockwise until Lo Is showing. 3. Then press the Set button, the current setting is shown. 4.
8_716_115_495a 9/2/09 11:49 Page 11 DIGISTAT ROOM THERMOSTAT BATTERY REPLACEMENT TAMPER PROOFING (All Models) To tamper proof the product i.e. prevent unauthorised adjustment of the product, set the Min. and Max. (HI and Lo) temperatures to the same desired value using the procedures above. FAULT DIAGNOSIS (All Models) If the display shows E1, the following faults could have occurred: 1. Internal temperature sensor has failed. Replace the unit, 2.
8_716_115_495a 9/2/09 11:49 Page 12 DT20RF RECEIVER GENERAL INFORMATION DT20RF Receiver Programmer The Programmer has factory set programs for ON/OFF periods for central heating and hot water pre-heat, which are described on the following pages. These factory installed settings can be used without any further programming. Central heating mode indicator This section also details how to program the DT20RF Receiver for new weekday and weekend times to suit your lifestyle requirements.
8_716_115_495a 9/2/09 11:49 Page 13 DT20RF RECEIVER OPERATING CONTROLS Central heating: Hot Water: 1. Press select button to choose 3. Press select button to choose off = constantly OFF timed = up to 3 ON & off = constantly OFF timed = up to 3 ON once = ON from first ON once = ON from first on = on = 3 OFF time periods as program until third OFF time period as program constantly ON and 3 OFF time periods as program ON until third OFF time period as program constantly ON 2.
8_716_115_495a 9/2/09 11:49 Page 14 DT20RF RECEIVER PRE-PROGRAMMED SETTINGS NOTE: The ON/OFF periods pre-programmed for Central Heating and Hot Water pre-heat are shown in the table below. These factory installed settings can be used without any further programming of the receiver. The time and date are pre-programmed and should not require adjustment.
8_716_115_495a 9/2/09 11:49 Page 15 DT20RF RECEIVER PROGRAMMABLE SETTINGS Setting Central Heating (CH) MON - FRI 1. Press set? until SET and PROG? are shown in the display. 2. Press OK to enter program. 3. Press OK to select MON-FRI. 4. Press OK to select CH. NOTE: Speed up the display by holding down the + or - buttons. 5. Press + or - to change the ON time. 6. Press set? to set the ON time and select the OFF time. 7. Press + or - to change the OFF time. 8.
8_716_115_495a 9/2/09 11:49 Page 16 DT20RF RECEIVER PROGRAMMABLE SETTINGS Setting individual weekdays: NOTE: If you do not require individual weekday times, then press set? until SET SAT-SUN are displayed and continue on the next page. If you do not wish to change the setting for the day displayed, then press set? until the first day you want to change is displayed. Setting Central Heating (CH) individual weekdays: 1. Press OK to select weekday. 2. Press OK to select CH.
8_716_115_495a 9/2/09 11:49 Page 17 DT20RF RECEIVER PROGRAMMABLE SETTINGS Setting Central Heating (CH) SAT - SUN: 1. Press OK to select weekend. 2. Press OK to select CH. NOTE: Speed up the display by holding down the + or - buttons. 3. Press + or - to change the ON time. 4. Press set? to set the ON time and select the OFF time. 5. Press + or - to change the OFF time. 6. Press set? to set the OFF time and select the next ON time. Repeat operations 3 to 6 to set the second and third ON/OFF times.
8_716_115_495a 9/2/09 11:49 Page 18 DT20RF RECEIVER PROGRAMMABLE SETTINGS Setting individual weekend days: NOTE: If you do not require individual weekend day times, then press set? until the normal display is shown. If you do not wish to change the settings for SAT, then press set? to move to SUN. Setting Central Heating (CH) individual weekend days: 1. Press OK to select the day displayed. 2. Press OK to select CH. NOTE: Speed up the display by holding down the + or - buttons. 3.
8_716_115_495a 9/2/09 11:49 Page 19 DT20RF RECEIVER PROGRAMMABLE SETTINGS Setting holidays: 1. Press the set? button until SET and HDAY are displayed. 2. Press OK and the display shows 00. 3. Press + or - to set the number of days you require the system to be off. 4. Press set? then HDAY is shown in the display and no demand for heating will be made from the programmer. The program will return to normal after the set number of days.
8_716_115_495a 9/2/09 11:49 Page 20 DT20RF RECEIVER PROGRAMMABLE SETTINGS Setting the clock and time 1. Press the set? button until SET and CLOCK are shown in the display. 2. Press OK to display 24hr and ON. 3. Press + to switch between 24hr and 12hr display. 4. Decide between 24 hour or 12 hour display and press set? to select, now the hours will flash. 5. Press + or - to set the correct hour. NOTE: Speed up the display by holding down the + or - buttons. 6.
8_716_115_495a 9/2/09 11:49 Page 21 DT20RF RECEIVER PROGRAMMABLE SETTINGS Setting the date: 1. Press the set? button until SET and DATE? are displayed. 2. Press the OK button once, the year flashes on the display. 3. Press + or - to set the correct year, e.g. 07. 4. When the correct year has been chosen, press set? to select, now the month will flash. 5. Press + or - to select the correct month, e.g. 08. 6. When the correct month has been chosen, press set? to select, now the day will flash. 7.
8_716_115_495a 9/2/09 11:49 Page 22 DT20RF RECEIVER INSTALLATION Cover panel Screw DANGER: 230 VOLTS DO NOT TOUCH THE ELECTRICAL COMPONENTS OR CIRCUITS Clips CAUTION: ISOLATE THE MAINS ELECTRICITY SUPPLY BEFORE STARTING ANY WORK OBSERVE ALL RELEVANT SAFETY PRECAUTIONS Tab OBSERVE ELECTRO-STATIC DISCHARGE PRECAUTIONS: DO NOT TOUCH THE PCB CIRCUIT Blanking plate NOTE: THIS ACCESSORY MUST BE FITTED BY A COMPETENT PERSON. FAILURE TO COMPLY COULD LEAD TO PROSECUTION. Programmer 1.
8_716_115_495a 9/2/09 11:49 DIGISTAT INSTALLATION Page 23 DIGISTAT / DT20RF RECEIVER SETTING UP THE RF LINK Receiver set up: After initial start up, the colon, CH and antenna symbols should be flashing on the display. 1. Press the set? button 4 times 2. Press the OK button once 3. Press the set? button 4 times; Lrn and OFF should be displayed 4. Press the + button so the display shows ON and a flashing antenna symbol.
8_716_115_495a 9/2/09 11:49 Page 24 DIGISTAT / DT20RF RECEIVER DIGISTAT INSTALLATION SETTING UP THE RF LINK 6. Remove the batteries from the Digistat and wait for the display to fade. 7 Press and hold the ‘SET’ button while re-inserting the batteries and keep the button depressed until the display shows ‘rF’. The Digistat is now in constant transmission mode enabling it to be correctly positioned within the home. Signal strength indicators Transmitter code (may be different) 9.
8_716_115_495a 9/2/09 11:49 DIGISTAT INSTALLATION Page 25 DIGISTAT / DT20RF RECEIVER MOUNTING THE DIGISTAT Positioning the Digistat RF room thermostat The Digistat is a radio frequency device which is very flexible for positioning as there is no need for hard wiring to the appliance. The device should be mounted in a open area, no closer than 30cm from metal objects, including wall boxes. Mount the Digistat on a wall which is not subject to direct sunlight or draughts, preferably on an inside wall, 1.
8_716_115_495a 9/2/09 11:49 Page 26 DIGISTAT / DT20RF RECEIVER DIGISTAT INSTALLATION TO CANCEL SIGNAL STRENGTH MODE To cancel signal strength mode: 1. Remove the batteries from the transmitter to cancel the constant transmission. 2. After a few seconds the receiver display will show ‘---’ . 3. Press ‘OK’ on the receiver display and the display will return to the time with the ‘CH and Antenna’ flashing. 4. Re-insert the batteries into the transmitter and the RF link will be re-established.
8_716_115_495a 9/2/09 11:49 DIGISTAT INSTALLATION Page 27 DIGISTAT / DT20RF RECEIVER TO CHECK PREVIOUSLY INSTALLED UNIT To check signal strength on previously installed and paired units : 1. Press the ‘set’ button 4 times. 2. Press ‘OK’ once. 3. Press the ‘set’ button 5 times. The display will show ‘SSI and OFF’. 4. Press the ‘+’ button so that the display shows ‘SSI, Antenna and ON’. 5. Press the ‘set’ button so the display shows ‘SSI and Antenna’. 6.
8_716_115_495a 9/2/09 11:49 Page 28 DIGISTAT / DT20RF RECEIVER DIGISTAT INSTALLATION TO CHECK PREVIOUSLY INSTALLED UNIT Transmitter code (may be different) Signal strength indicators LED indicator shows different colour depending on signal strength (see table below) LED Indication Chevrons RF Strength Green 4 Very strong Amber 3 Strong Red 2 Weak None 1 Very weak To cancel signal strength mode: 1. Remove the batteries from the transmitter to cancel the constant transmission. 2.
8_716_115_495a 9/2/09 11:49 DIGISTAT INSTALLATION Page 29 DIGISTAT / DT20RF RECEIVER NORMAL OPERATION During normal operation The LED on the receiver will flash red, approximately every 5 minutes. This denotes that a radio signal is being received from the transmitter. DT20RF PROGRAMMER INSTRUCTION MANUAL 8 716 115 495a (02.
8_716_115_495a 9/2/09 11:49 Page 30 DIGISTAT/DT20RF RECEIVER MAINTENANCE Digistat RF Room thermostat part number 8 716 114 463 0 Maintenance: The Digistat RF Room thermostat requires no maintenance. The outer casing can be wiped clean using a dry cloth. DO NOT use polish or detergents. These units can not be serviced. Should the existing units fail to function correctly, check that the: DT20RF Receiver times and program settings are correct.
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8_716_115_495a 9/2/09 11:49 Page 32 CONTACT INFORMATION WORCESTER, BOSCH GROUP: TECHNICAL: 08705 266241 SERVICE: 08457 256206 SPARES: 01905 752571 LITERATURE: 01905 752556 TRAINING: 01905 752526 SALES: 01905 752640 WEBSITE: worcester-bosch.co.uk WEBSITE (EIRE): worcester-bosch.ie Worcester, Bosch Group Cotswold Way, Warndon, Worcester WR4 9SW. Tel. 01905 754624 Fax. 01905 754619 worcester-bosch.co.uk Worcester, Bosch Group is a brand name of Bosch Thermotechnology Ltd.
