Buderus RC20 Guida rapida
7 747 006 248 – 08/2006 GB For heating engineers
Please read carefully prior to commissioning or servicing.
Installation and service
instructions
RC20 room controller
Contents
2 Installation and service instructions RC20 room controller • Issue 08/2006
We reserve the right to make any changes due to technical modifications.
1 Safety instructions and user notes. . . . . . . . . . . . . . . . . . . 4
1.1 Correct use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Please observe these safety instructions . . . . . . . . . . . . . . . 4
1.3 System handover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Other notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Specification for the RC20 room controller . . . . . . . . . . . . . . 7
2.2 Standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Tools required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Installation and connections . . . . . . . . . . . . . . . . . . . . . . .10
4 Switching on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.2 Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.3 Operating tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.1 Using the service level. . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.2 Parameter overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
5.3 Adjusting parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4 Address 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
5.5 Heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
5.6 Room temperature compensation . . . . . . . . . . . . . . . . . . . .21
5.7 DHW heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.8 Pump type 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.9 Pump run-on time 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.10 Standard display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.11 Adjusting the time . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.12 Pasteurisation process 1) . . . . . . . . . . . . . . . . . . . . . . . . .25
5.13 Displaying the software version . . . . . . . . . . . . . . . . . . . . .25
Contents
3
We reserve the right to make any changes due to technical modifications.
Installation and service instructions RC20 room controller • Issue 08/2006
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7 Setup report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Safety instructions and user notes1
4 Installation and service instructions RC20 room controller • Issue 08/2006
We reserve the right to make any changes due to technical modifications.
1 Safety instructions and user notes
1.1 Correct use
The RC20 room controller may only be used to operate and control
Buderus heating systems in houses and flats.
The boiler must be equipped with EMS (energy management
system) or UBA1.x (universal burner control). We recommend that
the heating system is always operated via the room controller
(only emergency operation possible without room controller).
The RC20 room controller must not be used with the control
devices of the Logamatic 2000/3000/4000 family.
1.2 Please observe these safety instructions
The RC20 room controller has been designed and built in
accordance with currently recognised standards and safety
requirements.
However, material damage resulting from inappropriate handling
of this device cannot be completely excluded.
zOnly use the room controller for the purposes for which it is
intended and only use if it is in perfect working order.
zPlease read these operating instructions carefully.
WARNING!
RISK OF SCALDING
The domestic hot water temperature can be as high as 80 °C.
There is a risk of scalding at the taps, if the temperature is set
higher than 60 °C.
zPlease advise your customers of the correct way to handle the
various DHW fittings to avoid the risk of scalding.
Safety instructions and user notes 1
5
We reserve the right to make any changes due to technical modifications.
Installation and service instructions RC20 room controller • Issue 08/2006
1.3 System handover
zOn the BC10 base controller set both rotary selectors to "Aut"
so that the DHW and flow temperature are controlled by the
programming unit.
zAfter commissioning, complete the setup report on page 29.
zExplain to the customer how the heating system works and
how to use the programming unit.
zPlease inform the end user about the settings you have made,
especially those for:
zWe recommend that these installation and service instructions
are handed over to the customer and stored in the vicinity of the
heating system.
CAUTION!
SYSTEM DAMAGE
through frost.
The heating system can freeze up in cold weather if it is shut
down.
zProtect your heating system against freezing by draining
the heating system and DHW pipework at the lowest
possible point.
zPlease read the note on frost protection (see section 4.3
"Operating tips", page 15).
The design and operation of this product conforms to European
Directives and the supplementary national requirements. Its
conformity is demonstrated by the CE Declaration of Conformity.
You can view the Declaration of Conformity on the Internet at
www.buderus.de/konfo or request a copy from your local
Buderus office.
– Allocation of the heating circuits ("address" parameter)
– Heating and DHW program
– The programming unit (e.g. RC30/RC35 if used)
Safety instructions and user notes1
6 Installation and service instructions RC20 room controller • Issue 08/2006
We reserve the right to make any changes due to technical modifications.
1.4 Other notes
Installation, maintenance and repairs as well as fault diagnosis
may only be carried out by authorised and qualified personnel.
Only use the RC20 room controller in combination with the
accessories and spare parts specified in these instructions. Use
alternative accessories and wearing parts only if these are
specifically designed for the intended application and impair
neither the performance nor infringe the mandatory safety
requirements.
USER NOTE
All modifications and settings made on the RC20 room controller
must consider the implications for the heating system.
USER NOTE
Never open the housing of the room controller.
Specifications 2
7
We reserve the right to make any changes due to technical modifications.
Installation and service instructions RC20 room controller • Issue 08/2006
2 Specifications
2.1 Specification for the RC20 room controller
2.2 Standards and guidelines
Observe all standards and guidelines applicable to the installation
and operation of this heating system in your country.
Observe all local regulations and the regulations of the energy
supply company applicable to the electrical installation.
Unit RC20
Supply voltage V 16 V DC
Power consumption W0.15
Dimensions
(Width/Height/Depth) mm 108/90/35
Weight g140
Operating temperature °C 0 to +50
Storage temperature °C 0 to +70
Relative humidity % 0 to 90
Tab. 1 Specification for the RC20 room controller
Applicable product standards
Safety of electrical appliances EN 60335-1
Electromagnetic compatibility
(EMC emission)
EN 50081-1, EN 61000-3-2,
EN 61000-3-3
EMC immunity EN 60730-1, EN 61000-6-2
Tab. 2 Applicable product standards
Installation3
8 Installation and service instructions RC20 room controller • Issue 08/2006
We reserve the right to make any changes due to technical modifications.
3 Installation
3.1 Tools required
For the wall mounting you will require:
– Percussion drill with Ø 6 mm masonry bit
– Phillips screwdriver
3.2 Requirements
Before starting to install the system, ensure that the following
requirements are satisfied:
3.2.1 Suitable reference room
To ensure the heating control unit works properly, the RC20
room controller must be installed in a suitable reference room
(see User Manual).
Alternative heat sources (sunlight or other heat sources, such as
an open fire) in the reference room affect the control function of the
RC20. If there are alternative heat sources in the reference room,
rooms without alternative heat sources may be too cold.
USER NOTE
With a room temperature control system there is no need for
thermostatic valves on the radiators in the reference room. If there
are thermostatic radiator valves in the reference room they must
be kept fully open at all times.
Installation 3
9
We reserve the right to make any changes due to technical modifications.
Installation and service instructions RC20 room controller • Issue 08/2006
3.2.2 Installation position
Choose an internal wall in the reference room and install the RC20
room controller as shown in Fig. 1. The clearance below the room
controller and the distance from the door are important in order to
obtain accurate measurement results.
3.2.3 Connection cable
The cable used to connect the RC20 room controller to the heating
system (Energy Management System, EMS) must meet the
following specifications:
Fig. 1 Installation position for the RC20 room controller in the
reference room (dimensions in metres)
Item 1: Free space
Number of cores: 2
Conductor cross
section:
0,75 mm2(0.5 – 1.5 mm2,
solid conductor, not flexible cord)
Cable length: max. 100 m
0,75
1,2
1
Installation3
10 Installation and service instructions RC20 room controller • Issue 08/2006
We reserve the right to make any changes due to technical modifications.
3.3 Installation and connections
3.3.1 Attaching the mounting plate
Before installation, remove the room controller from the
mounting plate.
zPress the release button on the bottom of the mounting
plate (Fig. 2, step 1).
zRemove the mounting plate in the direction shown by the
arrow (Fig. 2, step 2).
Fig. 2 Removing the room controller from the mounting plate
2
1
USER NOTE
The mounting plate can be affixed directly to the plaster or to a
flush-mounted box. If you mount the room controller on a flush-
mounted box, ensure that any draught from the box cannot distort
the measurement of the room temperature in the room controller
(if necessary pack the box with insulating material).
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1
Indice
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