Rehau NEA SMART R BASIS 230 V User manual

NEA SMART R BASIS 230 V
Installation Instructions

CONTENTS
1 Safety 3
1.1 Used symbols and important safety instructions 3
1.2 Intended use 3
1.3 General safety warnings 3
1.4 Requirements with regard to personnel 3
1.5 Restrictions regarding use of product 3
1.6 Compliance 3
2 Versions 4
2.1 Box contents 4
2.2 Indicators and operating buttons 4
2.3 Connections 5
2.4 Technical data 5
3 Installation 6
3.1 Installation 6
3.2 Electrical connection 6
3.2.1 External change-over signal 7
3.2.2 Pump/boiler/chiller 7
3.2.3 Optional dew point sensor 7
3.2.4 Pilot function for change-over heating/cooling 7
3.2.5 External timer 8
3.2.6 System BUS 8
3.2.7 Use of high temperature limiter 8
3.2.8 Ethernet connection 8
4 Commissioning 9
4.1 First commissioning 9
4.2 Connecting (pairing) / separating base stations 9
4.3 Allocation of a room control unit to a heating zone (pairing)10
4.4 Activate test for wireless operation 10
4.5 System configuration 10
4.5.1 System configuration with microSD card 10
4.5.2 Configuration with Nea Smart room control unit D 10
4.6 Resetting the factory settings 10
5 Exercise functions and safe mode 12
5.1 Exercise functions 12
5.1.1 Pump exercise 12
5.1.2 Valve exercise function 12
5.1.3 Frost protection 12
5.1.4 Dew point monitoring 12
5.1.5 High temperature limiter 12
5.2 Safe mode 12
6 Troubleshooting and cleaning 13
6.1 Error messages and error handling 13
6.2 Fuse change 14
6.3 Cleaning 14
7 Decommissioning 15
7.1 Decommissioning 15
7.2 Disposal 15
More information on the Nea Smart control system and all
documentation available for download can be found at
www.rehau.com/neasmart
2

1 SAFETY
1.1 Used symbols and important safety instructions
Electrical voltage! Danger to life! Safety instructions are
marked with this symbol.
Note
1.2 Intended use
The base station Nea Smart R 230 V is intended
- for a single room regulation system (readjustment) with a maximum
of 8 zones for heating and cooling systems,
- for the connection of a maximum of 12 actuators UNI 230 V and
8 Nea Smart R room control units D or Nea Smart R room control
units, a pump, a CO signalling unit, a humidity sensor with potential-
free contact as well as an external timer,
- for a fixed installation.
Every other use is outside its intended use for which the manufacturer
cannot be held liable.
Modifications and conversions are expressively forbidden and lead to
dangers the manufacturer cannot be held liable for.
1.3 General safety warnings
Electrical voltage! Danger to life! The base station is live.
- Prior to opening always disconnect from the mains and
secure in such a way that it cannot accidentally be switched on.
- Disconnect all external voltages connected to the unit, e.g. at the
pump and the boiler contacts and ensure these cannot accidentally
be switched live.
Emergency
In case of emergency, disconnect the complete control system from
mains.
Retain this manual and provide it to future owners.
1.4 Requirements with regard to personnel
Authorised specialists
The electrical installations must be performed according to the current
VDE regulations as well as according to the regulations of your local
electric power utility company. These instructions are intended for use
by a qualified person who is holding an ocial certificate in one of
the following professions: electrician or electronics engineer (accord-
ing to the profession designations ocially announced in the Federal
Republic of Germany, as well as according to comparable professions
within the European Community Law).
1.5 Restrictions regarding use of product
This unit is not intended to be used by people (including children) with
restricted physical, sensory or mental skills except if they are
supervised by a person responsible for their safety or have received
instructions on how to use this unit.
Children should be supervised in order to ensure that they do not play
with the device.
1.6 Compliance
This product is labelled with the CE Marking and thus is in compliance
with the requirements from the guidelines:
- 2004/108/EG with amendments “Council Directive on the approxi-
mation of the laws of the Member States relating to Electromagnetic
Compatibility”
- 2006/95/EG with amendments “Council for Coordination of the
Regulations of EU Member Countries regarding the electrical
equipment for use within certain voltage limits”
- “Radio and Telecommunications Terminal Equipment Act (FTEG) and
Guideline 1999/5/EG (R&TTE)”
Increased protection requirements may exist for the overall installation,
the compliance of which is the responsibility of the installer.
3

2 VERSIONS
2.1 Box contents
1 x 1234
Power
rmBUS
Error
syBUS
Fuse Pump Boiler Cool
H% Master NO
Pairing
1 x
Fig. 2-1 Box contents
2.2 Indicators and operating buttons
1234
Power
rmBUS
Error
syBUS
Fuse Pump Boiler Cool
H% Master NO
Pairing
4 5 1098761 2 3
12 11
Fig. 2-2 Indicators and operating buttons
No. Designation LED Status Function
1Fuse red permanent
on
Fuse has blown
2syBUS yellow permanent
on
Shows syBUS activity
Flashing Write access on
microSD-card
3Error red permanent
on
High temperature limiter
active
4Power green permanent
on
Base station ready
5Pump green permanent
on
Pump output active
6Boiler green permanent
on
Lights up when boiler
output is active if the
boiler relay is used for
boiler control
7Cool H% blue permanent
on
Cooling mode active
Flashing Condensation detected
8Master yellow permanent
on
Base station is defined as
master
Flashing Base station is defined as
slave
9NO yellow permanent
on
Installation is configured
for NO actuators
(normally open)
10 Heating zones
1 - x
green Shows the respective
status of the heating/
cooling zones
11 rmBUS button - Button for the rmBUS
functionality
12 syBUS button - Button for the syBUS
functionality
Tab. 2-1 Indicators and operating buttons
4

2.3 Connections
HZ 5 HZ 6 HZ 7 HZ 8
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
1 1 1 11 12 2 2 22 2 1 1 1 11 12 2 2 22 2
N N L L TB
4 5 1098761 2 3
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
111111222222 111111222222 11111122222 2
L1‘
TB
L2‘
L1 L2
T2A
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
11111122222 2
111111222222 11111122222 2
N
N
L L TB
T4AH
System BUS
B GND24V A
24 V 230 V
16 1715
21 3 4 5 6 7 8 9 10 11 12 1413
12 13
11
Fig. 2-3 Connections
No. Terminals Function
1Earthing terminals 1 and 2 Terminals for Earthing
2Mains connection N/L Connection for mains supply
3Output 230 V Can be used to supply power to the pump
4High temperature limiter
Terminals for connecting high temperature
limiter for protecting sensitive surfaces,
to be provided by others (optional)
5Pump Terminal to switch pump
6Boiler
Terminal to switch boiler or valves in case of
CO mode
7ECO Potential-free input for external timer
8Change over
Potential-free input (according to SELV) for
external change-over signal
9Dew point sensor
Potential-free input (according to SELV) for dew
point sensor
10 Actuators 12 connections for thermal actuators UNI 230 V
11 RJ45 connection
Ethernet interface for the integration of the
base station into the home network
12 RJ12 connection Connection for active antenna
13 microSD card slot
Used for updating firmware and individual
system settings.
Tab. 2-2 Connections
2.4 Technical data
Nea Smart R base station 230 V
Ethernet x
Number of heating zones 8
Number of actuators 4x2 + 4x1
Max. nominal load of all actuators 24 W
Switching power per heating zone max. 1 A
Pump output 8 A ohmsch, inductive max. 200VA
Operating voltage 230 V / ±15% / 50 Hz
Mains connection NYM connection terminals 3 x 1.5 mm²
Power consumption (without pump) 50 W
Power consumption in idle operation/
with transformer
2,4 W
Protection class II
Protection degree/overvoltage category IP20 / III
Fuse 5 x 20 mm, T4AH
Ambient temperature 0 °C – 60 °C
Storage temperature -25 °C to +70 °C
Humidity 5 to 80%, not condensing
Dimensions 225 x 52 x 75 mm
Material PC+ABS
Control accuracy of set point ±1 K
Hunting ±0,2 K
Modulation FSK
Carrier frequency 868 MHz, bidirectional
Range 25 m in buildings / 250 m in open air
Transmitting power max. 10 mW
Tab. 2-3 Technical data
5

3 INSTALLATION
3.1 Installation
Electrical voltage! Danger to life!
Only carry out installation work with all power disconnected
Installation
electric connection,
see section 3.2
Fig. 3-1 Installation
3.2 Electrical connection
Electrical voltage! Danger to life!
Only carry out installation work with all power disconnected
The wiring of the control system depends on many factors and must
be planned and carried out carefully by the installer. The following
cable sizes are compatible with the terminals:
- solid cable: 0.5 – 1.5 mm²
- multiple stranded cable: 1,0 – 1,5 mm²
- 8 - 9 mm insulation stripped o the cable
- Actuators with factory-fitted cable sleeves can be used.
Both N terminals share a rail and both L terminals share a rail.
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
1 1 1 11 12 2 2 22 2 1 1 1 11 12 2 2 22 2 1 1 1 11 12 2 2 22 2
N
N
L L TB
T4AH
System BUS
B GND24V A
N L
Fig. 3-2 Electrical connection
12
34
56
7
6

3.2.1 External change-over signal
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1
HZ 2 HZ 3 HZ 4
111111222222 111111222222 111111222222
N N LLTB
T4AH
N
L
Cooling
Heating
Fig. 3-3 Terminal change-over signal
If an external change-over signal is used, the overall installation
switches accordingly between heating and cooling.
3.2.2 Pump/boiler/chiller
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
111111222222 111111222222 111111222222
N N LLTB
T4AH
N
L
Boiler
Fig. 3-4 Terminal for pump and boiler
The boiler terminal switches a boiler or chiller. Additionally, a pump
can be supplied directly with power and switched.
The use of a relay to switch a pump is recommended.
3.2.3 Optional dew point sensor
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1
HZ 2 HZ 3 HZ 4
111111222222 111111222222 111111222222
N N LLTB
T4AH
Umschalten der Anlage auf Kühlen durch Bedienung am RBG
H
N
L
Dew point
sensor
Fig. 3-5 Terminal for dew point sensor
Dew point sensors (to be provided by others) are used to prevent
condensation when in cooling mode.
The dew point alarm is triggered when the contact of the dew point
sensor is closed.
3.2.4 Pilot function for change-over heating/cooling
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
111111222222 111111222222 111111222222
N N LLTB
T4AH
N
L
N
L
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
111111222222 111111222222 111111222222
N N LLTB
T4AH
N
L
N
L
Heating
Cooling
Fig. 3-6 Usage of the "Boiler" output as a pilot signal for change over
If no external change-over signal is available, the internal pilot function
of the base station can be used for switching the overall installation
between the operating modes Heating and Cooling. A relay used by
the base station for switching over is used for this.
7

3.2.5 External timer
HZ 5 HZ 6HZ 7HZ 8 HZ 9HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
111111222222 111111222222 111111222222
N N LLTB
T4AH
N
L
Fig. 3-7 Connection of an external timer
The base station is equipped with an ECO input for connecting an
external timer in case the timers of the Nea Smart R room control unit
D are not to be used. When the input is activated by the external timer,
the heating zones are switched into set back.
3.2.6 System BUS
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
1 1 1 11 12 2 2 22 2 1
1 1 11 12 2 2 22 2 1 1 1 11 12 2 2 22 2
N N L L TB
T4AH
System BUS
B GND
24V A
System BUS
B GND
24V A
System BUS
B GND
24V A
1
7
Fig. 3-8 Base station connection via System BUS
Line to be used: I (Y) St Y 2 x 2 x 0,8 mm.
Connect the shield to device earth (Gnd) on both sides!
A maximum of seven base stations can be interconnected via the
system BUS (syBUS) in order to exchange global system parameters.
After completing the wiring, the base stations must be paired – see
section 4.2. For cable sizes <6 mm, a strain relief is necessary (to be
provided by others).
The base stations can also be connected wirelessly, see
section 4.2. A mix of both wired and wireless connections is
possible.
3.2.7 Use of high temperature limiter
HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 HZ 11 HZ 12
pump
1 2
boiler
1 2
ECO
1 2
CO
1 2
H %
1 2
HZ 1 HZ 2 HZ 3 HZ 4
111111222222 111111222222 111111222222
N N LLTB
T4AH
NL 1
Fig. 3-9 Terminal for high temperature limiter
Connecting a high temperature limiter (1) (supplied by others). When
triggered this input cuts the power to the pump and switches the input
TL if any excessive flow temperatures into the floor heating are
detected. If the TL input is switched, the base station automatically
closes all actuators.
3.2.8 Ethernet connection
The Nea Smart R base station 230 V is equipped with a RJ45
interface and an integrated web server for the control and configura-
tion of the system via PC/laptop and over the Internet.
- Integration of the base station into the network via network cable, or
direct connection to PC/laptop
Set-up in the home network:
- Open the router menu (see manual of the respective device) via the
address bar in the web browser (Internet Explorer, Firefox, …).
- Open an overview of all devices in the network.
- Compare to the MAC address (see type sign) in order to find out the
IP address allocated to the base station.
- Note the IP address of the base station and enter it into the address
bar of the web browser in order to open the web interface.
Direct connection to PC/laptop:
- Open the network settings in the PC/laptop and assign the IP ad-
dress 192.168.100.1 as well as
the subnet mask 255.255.0.0 manually to the PC.
- Access to the web interface can be gained by entering the IP ad-
dress 192.168.100.100 in the address bar of your web browser.
You can find further information on the set-up as well on worldwide
access via the Internet under www.rehau.com/neasmart.
8

4 COMMISSIONING
4.1 First commissioning
The base station is in installation mode during the first 30 minutes
after switching on the mains power. The target and actual tempera-
tures are compared in this mode, all other functions are deactivated.
If the actual temperature is below the target temperature, the output
allocated to the respective room control unit is activated at the base
station. In this initial time all signals are activated instantly making it
possible to check the correct pairing of room control units and heating
zones.
Switch on the mains power.
- The base station is in installation mode for 30 minutes.
- If the base station is configured for NC actuators, all heating zones
are activated for 10 minutes in order to unlock the first-open
function of the NC actuators.
- The power LED (operation display) lights up.
4.2 Connecting (pairing) / separating base stations
If several base stations are used in one heating system, a maximum of
seven units can be connected with each other (paired) for the
exchange of global system parameters via wireless technology or
system bus (syBUS). For wireless connections observe the signal
range of the base station. If the signal range is insucient, pairing
must be performed with the syBUS. Communication is done according
to the master/slave principle. Requirements and status messages are
exchanged between the units. The master unit centrally controls the
directly connected functions/components:
- CO input/output (if the pilot function is activated)
- Boiler output
- Pump output
1
2
3
4
5
6
7
Slave
Slave
Master
Fig. 4-1 System with multiple base units
The base station to which the components are connected must
be configured as master. Further base stations can only be
paired with the master.
The pairing of base stations is done as follows:
1. Press the syBUS button of the base station to be configured as
master for three seconds in order to start the pairing mode.
- The LED “syBUS” flashes.
- For three minutes, the pairing mode is ready to receive the
pairing signal of another base station.
2. Press the syBUS button of the base station to be configured as
slave two times consecutively for one second, in order to pair it
with the master.
- The paring mode ends automatically after the process has
finished.
- The LED “Master” lights up at the master base station.
- The LED “Master” flashes if the base station has been
configured as slave.
3. Repeat the process for paring another base station.
Disconnecting a base station is done as follows:
4. Press the syBUS button of the base station to be separated for
three seconds in order to start the pairing mode.
- The LED “syBUS” flashes.
5. Press the syBUS button again for approx. 10 seconds.
- The base resets and the LED "Master" is o.
9

4.3 Allocation of a room control unit to a heating zone
(pairing)
1. Press the rmBUS button of the base station for three seconds in
order to start the pairing mode.
- The LED “Heating zone1” flashes.
2. Select the desired heating zone by pressing again briefly.
- For three minutes, the selected heating zone is ready to receive
the pairing signal of a room control unit.
3. Activate the pairing function at the room control unit (see Room
Control Unit Manual).
- The pairing mode ends automatically after establishing a
successful connection.
- The LED of the heating zone previously selected will light up for
1 minute.
4. Repeat the process for allocating more room control units.
One room control unit can be allocated to various heating
zones. The allocation of several room control units to one zone
is not possible.
4.4 Activate test for wireless operation
The test for wireless operation checks the communication between
the base station and the room control unit. The wireless test must
always be carried out with the room control unit being at its intended
final location.
The base station must not be in pairing mode during the testing for
the wireless operation.
1. Start the wireless test at the room control unit (see Room Control
Unit Manual).
- The heating zone allocated to the room control unit is activated
for one minute and is switched o or on depending on its
current operating status.
2. If there is no activation, the signal reception is insucient.
Proceed as follows:
- Taking into account the installation conditions of the room
control unit, change its installation position until you have a
signal reception, or
- Use the optional accessories “Active antenna” or “Repeater” in
order to amplify the wireless signal. You can find information on
the installation in the respective manual.
4.5 System configuration
The configuration of the base station is done optionally via the
microSD, the software interface of the Ethernet variant or the Service
level of the Nea Smart R room control unit D.
4.5.1 System configuration with microSD card
Individual settings can be made via the EZR Manager SD Card under
www.ezr-home.de and transferred to the base station via the microSD
card. As of software version 01.70, the base station accepts microSD
cards >2 GB in the formats FAT16 or FAT32.
1. Open www.ezr-home.de in the web browser of your PC, select
EZR Manager SD Card and follow the instructions on-line.
2. Insert the microSD card with the updated data into the base
station.
- The transfer process will start automatically and copy the
updated data into the base station.
- The LED “syBUS” flashes during the transfer process.
- After a successful data transmission, the LED “syBUS” stops
flashing.
4.5.2 Configuration with Nea Smart room control unit D
The Service level of the Nea Smart R room control unit D is protected
with a PIN code and may only be used by authorized specialists.
Faulty configuration leads to errors and damages the
installations.
1. Press the control knob.
2. Select the menu “Service Level” and confirm by pressing.
3. Enter the 4-digit PIN (standard: 1314) by rotating and pressing.
4. Select parameters (PAr) by pressing again and enter the number
code of the desired parameter (see following table).
5. Change parameters as required and confirm by pressing.
4.6 Resetting the factory settings
Attention! All user settings will be lost.
1. If present, remove the microSD Card from the base station and
delete the parameter file “params_usr.bin” using a PC.
2. Press the rmBUS button on the wireless base station for three
seconds in order to start the pairing mode.
- The LED “Heating zone1” flashes.
3. Press the rmBUS button again for 10 seconds.
- All heating zone LEDs flash simultaneously;
press the rmBUS button for another 5 seconds.
- the LEDs light up simultaneously, and then go out.
Now the base station is reset to factory settings and behaves as it did
during the first commissioning (see section 4).
Previously allocated room control units must be paired again,
see section 4.3.
10

No. Parameters Description Default Settings Unit
010 Used heating system Adjustable per heating zone: Floor heating (FBH) standard / FBH low energy / radiator / convector passive / convector active 1 FBH St.=0
FBH NE=1
RAD=2
KON pas.=3
KON act.=4
020 Deactivate heating/cooling Deactivating the switching outputs depending on the selected operating mode (heating/cooling) 0 normal=0
Heating deactivated=1
Cooling deactivated=2
030 Tamper Proof function
(child safety lock)
Password required for deactivate the tamper proof function 0 Deactivated=0
Activated=1
031 Password for tamper proof function Determine PIN if parameter 30 is set to active – 0000..9999
040 External sensor connected to the room control unit Register an additional sensor for monitoring the floor temperature (FBH), the room temperature or the dew point 2 no sensor=0
Dew point sen.=1
Temp FBH=2
Temp room=3
060 Temperature calibration of actual values A correction factor is applied to the actual temperature 0,0 -2.0...+2.0 K
in 0.1 increments
110 Control direction switched output Change between NC and NO actuators (only globally) 0 NC=0 / NO=1
115 Use as setback input Change-over between use of the ECO input for setback or holiday function of the room control unit.
The holiday function cannot be activated any longer via the room control unit if this parameter has been set to 1.
0 ECO=0
Holiday=1
120 Unit of temperature display Toggle the display between degree Celsius and degree Fahrenheit 0 °C=0
°F=1
Pump configuration
130 Pump output Use the control of a local recirculation pump (in the heating circuit distributor) or a global recirculation pump (heating installation). 0 local=0
global=1
131 Pump type Selection of the used pump: Conventional Pump (KP) / High efficiency Pump (HP) 1 CP=0
HP=1
132 Pump delay Time delay between demand signal and actual activation of pump. 4 min [min]
133 Pump overrun Time between closing of actuators and switching off pump. 2 min [min]
134 Control direction switched output The control direction can be reversed if the pump relay is used as control output 0 normal=0
reversed=1
135 Minimum running time The minimum running time indicates how long the HP must run until it may be switched off again. 30 min [min]
136 Minimum standstill time High efficiency pump: The pump may only be switched off if a minimum standstill time can be ensured. 10 min [min]
Configuration of change-over functionality / boiler relay
140 Function of relay boiler /
CO output
Selection whether the switching output shall serve for controlling a pump relay, or as CO pilot 0 Boiler=0
CO pilot=1
141 Boiler delay Boiler delay for conventional pump Pump 5 min [min]
142 Overrun Boiler overrun time for conventional pump Pump 1 min [min]
143 Control direction switched output If used as a control output the relay function can be reversed. 0 normal=0
reversed=1
160 Frost protection Activation of control outputs for Tactual <x °C 1 Deactivated=0
Activated=1
161 Minimum temperature in frost protection mode Limit room temperature at which frost protection mode is activated 8 °C [°C]
170 Smart Start Adaptive self learning of the temperature behaviour of each individual heating zones 0 Deactivated=0
Activated=1
Safe mode operation
180 Time until activated Delay until safe mode is activated 180 min [min]
181 PWM cycle duration in safe mode Duration of a PWM cycle in safe mode 15 min [min]
182 Cycle duration PWM heating Control duration in heating operation 25 % [%]
183 Cycle duration PWM cooling Control duration in cooling operation 0% [%]
Valve exercise
190 Time until activated Running time since last activation 14 d [d]
191 Duration of valve exercise Duration of valve exercise (0= function deactivated) 5 min [min]
Pump exercise
200 Time until activated Running time since last activation 3 d [d]
201 Time until activated Activation duration (0 = function deactivated) 5 min [min]
210 First open function (FO) Activation of all actuator outputs in installation mode 10 min [min]
Off=0
220 Automatic switching between summer and winter time If activated, time switching follows automatically the CET guidelines 1 Deactivated=0
Activated=1
230 Setback temperature differential In case of activation of the setback via the external input 2 K [K]
Tab. 4-1 Parameters
11

5 EXERCISE FUNCTIONS AND SAFE MODE
5.1 Exercise functions
The base station is equipped with many exercise functions for avoiding
damage to the overall system.
5.1.1 Pump exercise
In order to avoid damage by prolonged standstill times, the pump is
regularly activated in pre-set intervals. The LED “pump” lights up
during these periods (see parameters 200/201).
5.1.2 Valve exercise function
During prolonged periods without valve activation (e. g. outside the
heating period) all heating zones with a paired room control unit are
regularly activated to prevent setting of the valves (see parameters
190/191).
5.1.3 Frost protection
Independent from the operating mode, every switched actuator output
has a frost protection. When the actual room temperature falls below
the preset min frost protection temperature, the corresponding
actuators are opened until the min frost protection temperature is
reached again in the room. The frost protection temperature can be
set via the microSD card, via the software surface of the Ethernet
variant or via the service level of the RBG display (parameter 161).
5.1.4 Dew point monitoring
If the installation is equipped with a dew point sensor (provided by
others), the valves of all heating zones are closed if condensation is
detected in order to avoid damage due to moisture. The dew point
sensor input is only used during cooling operation.
The alarm is triggered when the contact is closed.
5.1.5 High temperature limiter
If an optional high temperature limiter is used, all valves are closed
when a preset temperature is exceeded in order to avoid damage to
sensitive floor coverings.
5.2 Safe mode
If the base station is unable to establish a connection to a room
control unit allocated to a heating zone for a preset time, the safe
mode is activated automatically. In safe mode, the switched outputs at
the base station are activated with a modified PWM cycle duration
(parameter 181) independent from the heating system in order to
avoid complete cooling of the rooms (in heating operation) or
condensation (in cooling operation).
12

6 TROUBLESHOOTING AND CLEANING
6.1 Error messages and error handling
Signal code of the LEDs Meaning Handling
Fuse
01234
Duration in seconds Fuse defective Change the fuse
(see section 6.2)
Fuse
Error / Pump
01234
Duration in seconds
High temperature limiter active,
valves are closed
Thenormalcontroloperationisautomaticallyresumedwhenthetemperaturedrops again belowthepresetlimit
Pump
Error
„Cool H%“ (only cooling operation)
01234
Duration in seconds Condensation detected,
valves are closed
Thenormal controloperationis automatically resumedwhenno condensation isdetected any more.
Cool
Heating zone
01234
Duration in seconds
Wireless connection to the room control unit faulty Change the position of the room control unit or use a repeater or an active antenna.
HZ off
HZ on
Heating zone
01234
Duration in seconds
Low battery in the room control unit Replace batteries in the room control unit
HZ off
HZ on
Heating zone
01234
Duration in seconds Safe mode active
Replace batteries in the room control unit
Activate test for wireless operation.
If necessary, reposition the room control unit.
Replace a defective room control unit.
HZ
Tab. 6-1 Troubleshooting
LED o
LED on
1234
Power
rmBUS
Error
syBUS
Fuse Pump Boiler Cool
H% Master NO
Pairing
Fig. 6-1 Indicators and operating buttons
13

6.2 Fuse change
Electrical voltage! Danger to life!
The base station is live.
- Prior to opening always disconnect from the mains and secure in
such a way that it cannot accidentally be switched on.
- Prior to replacing the fuse and connecting the power again, always
check the wiring and connected components for any faults.
- Only use the specified fuse for this unit T4AH, 5 x 20 mm.
1 2 3
4 5 6
Fig. 6-2 Changing the fuse
6.3 Cleaning
Only use a dry and solvent-free, soft cloth for cleaning.
14

7 DECOMMISSIONING
7.1 Decommissioning
Electrical voltage! Danger to life! The base station is live.
- Prior to opening always disconnect from the mains and
secure in such a way that it cannot accidentally be switched on.
- Disconnect all external voltages connected to the unit, e.g. at the
pump and the boiler contacts and ensure these cannot accidentally
be switched live.
7.2 Disposal
The base stations must not be disposed of with domestic
waste. The user has the duty to dispose of the units at
designated collection points. The separate collection and
orderly disposal of all materials will help to conserve
natural resources and ensure a recycling in a manner that
protects human health and the environment. If you need information
about collection points for your devices, please contact your local
municipality or your local waste disposal services.
15

© REHAU AG + Co
Rheniumhaus
95111 Rehau
Subject to technical changes.
954620 EN 05.2017
This document is protected by copyright. All rights based on this are reserved. No part
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Insofar as the intended application deviates from that described in the relevant
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