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Summary of Contents for Buderus RC20
- Page 1 – 7 747 006 217 08/2006 GB For the user Operating instructions RC20 room controller Please read carefully before use.
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Page 2: Table Of Contents
......... 31 We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006... -
Page 3: Introduction
Introduction Introduction The RC20 room controller makes it easy to operate your Buderus heating system with Energy Management System (EMS). The heating system is controlled in such a way that you benefit from optimum heating comfort and minimum energy consumption. -
Page 4: Safe Handling Of Your Rc20
Always observe the safety instructions to prevent injury and material losses. Correct use The RC20 room controller may only be used to operate and control Buderus heating systems in houses or apartments. The boiler must be equipped with EMS (energy management system) or UBA1.x (universal burner control). -
Page 5: Cleaning
All modifications and settings made on the room controller must consider the implications for the heating system. Never open the housing of the programming unit. We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006... -
Page 6: First Steps With Your Room Controller
(Fig. 1, Item 4) "AUT" key (automatic) "Time" key "Day mode" key "Prog" key (program) "Night mode" key "DHW" key We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006... - Page 7 The display shows four dashes if you try to change a value that cannot be modified of if no setting is possible. We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006...
- Page 8 Opening the flap activates a switch. The flap covers the keys for setting the time and the day, as well as the heating program selection. We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006...
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Page 9: Quick Reference Guide
Functions (Chapter 4, page 10) Keys Function Page Set the time page 19 Select a heating program page 21 Flap open We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006... -
Page 10: The Functions
The functions are controlled by pressing a key on the right-hand side of the RC20 and turning the rotary selector. Changing the room temperature directly If all of your accommodation is too cold, raise the room temperature using the rotary selector, and leave the thermostatic radiator valves unchanged. - Page 11 The functions 4.1.1 Selecting the operating mode You may operate the RC20 room controller in two ways: – in automatic mode – in manual mode 4.1.2 Selecting automatic mode Generally, homes are heated less at night than during the day. The room controller changes over automatically between day mode (standard heating mode) and night mode (setback heating mode).
- Page 12 USER NOTE If the RC20 is installed as a remote control unit (see section 5.1 "What does the RC20 room controller regulate?", page 23): you may find during the in-between seasons of spring and autumn that...
- Page 13 There are two temperatures for manual day and night mode. You can use day mode to run the heating on cool days in summer mode (only if the RC20 is installed as a remote control unit, see section 5.1, page 23).
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Page 14: Setting The Room Temperature
Your heating contractor can also set the controller to a different standard display. USER NOTE The room temperature sensor is in the RC20. It is not possible to connect a separate external room temperature sensor. 4.2.1 Setting the room temperature for the current... - Page 15 RC20 is the sole programming unit or it has been installed as a remote control unit for an RC35 programming unit (see section 5.1, page 23). If the RC20 has been installed as a remote control unit for an RC30 programming unit, use manual mode (see section 4.1.3, page 13).
- Page 16 If you are currently in automatic "Night mode", and you wish to adjust the set day temperature, proceed as described above, but instead hold down the "Day mode" key. We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006...
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Page 17: Heating Domestic Hot Water
(see section 5.1 "What does the RC20 room controller regulate?", page 23): – If the RC20 room controller is the only programming unit in the system, DHW heating commences automatically 30 minutes before the heating program starts its day mode. DHW is not produced during might mode. - Page 18 Recharging will then be terminated and the LED stops flashing. USER NOTE In a modern Buderus DHW cylinder, the water only cools down at a rate of around 0.5 °C per hour when not being drawn, i.e. recharging only occurs after 10 hours. If necessary you can manually recharge the DHW to 60 °C (see section 4.3.2 "Single...
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Page 19: Setting Day And Time
Both can be selected on the room controller, for example after an extended power failure. Day and time can only be selected on the RC30/RC35 if the RC20 room controller is allocated to a RC30/RC35 as remote control unit. -
Page 20: What Is A Heating Program
– From what time in the evenings do you no longer need heating? This too may depend on the day of the week. The RC20 room controller from Buderus offers eight preset standard programs that can be selected straightaway. If the room controller has been installed as a remote control unit for an RC30/RC35 programming unit, heating programs from the RC30/RC35 can be used in the RC20 ("Own program",... -
Page 21: Heating Program Selection
The functions Heating program selection The RC20 room controller has eight different heating programs. See the following page for a summary of the preset times of these heating programs. Please check which heating program best meets your requirements to optimise heat comfort and energy efficiency. -
Page 22: Heating Program Summary
Constant heating mode (24 hours). This is displayed on the RC20 while a "Pr 9" "New" new heating program is being entered in the RC30/RC35 (only if the RC20 is used as remote control). "Own program Only when RC20 is used for remote control: activates "Own program 1" that "Pr 0"... -
Page 23: Information On Setting The Programming Unit
Energy Management System (EMS) by two different methods: – As sole programming unit for the system (factory setting): The RC20 room controller is fitted in a room (reference room) and is operated without another programming unit (for example RC30/RC35) being installed in the heating system. -
Page 24: Control Modes For The Heating Control Unit
Adjust the room temperature of the house or the reference room on the programming unit. To raise or lower the temperature in other rooms, adjust the thermostatic radiator valves. We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006... - Page 25 If the RC20 has been installed as the only programming unit, room temperature control is always used. If the RC20 has been installed as a remote control unit for a heating circuit, the type of control that has been set for the higher level programming unit (RC30/RC35) applies.
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Page 26: Tips On Energy-Efficient Heating
If necessary, use a separate switching program for heating DHW. – Arrange with your local heating contractor to have your heating system serviced annually. We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006... -
Page 27: Troubleshooting
Different values influence the room temperature. The cold wall temperature measured temperature will influence the RC20, if it has been fitted to a cold with a separate wall. If it is installed in a warm part of the room, e.g. close to a thermometer not chimney, it will be influenced by the heat from that. -
Page 28: Fault Displays
Troubleshooting Fault displays Service and fault messages can be viewed in the RC20 room controller display. Tab. 3 details possible faults and special display messages. Code Display Cause Remedy No display: Your heating system has been Switch your heating system ON. - Page 29 Faults can be displayed as plain text on a programming unit, if your heating system has been equipped with such a unit (e.g. RC30/RC35). We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006...
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Page 30: Resetting Faults (Reset)
OFF through a fault shutdown. Try and reset the fault. If this is impossible, immediately notify your heating contractor. We reserve the right to make any changes due to technical modifications. Operating instructions RC20 room controller • Issue 08/2006... -
Page 31: Index
....4 RC20 as remote control ..23 Energy, saving ... . . 26 RC20, only one in the system . - Page 32 Your installer: Buderus BBT Thermotechnik GmbH Cotswold Way, Warndon, Worcester WR4 9SW D-35573 Wetzlar Tel.: 01905 752794, Fax: 01905 753130 www.heiztechnik.buderus.de www.buderus-commercial.co.uk info@heiztechnik.buderus.de In the UK, Buderus is a trading name of BBT Thermotechnology Ltd.
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