Worcester Greenstar Sense I User manual

UK/IE
Installation and Operation Manual
Operating unit
Greenstar Sense I
6 720 648 748-00.1O
Intelligent Wired Room Thermostat
6 720 648 748 (2014/03)

2
Contents
6 720 648 748 (2014/03)
Contents
1 Key to symbols and safety instructions 3
1.1 Explanation of symbols 3
1.2 Safety regulations 3
2 Product details 4
2.1 Product data for energy consumption 5
2.2 Technical specifications 6
2.3 Function as room temperature-dependent controller 6
2.4 Function as zone controller 6
2.5 Function as an intelligent room thermostat 7
3 Old electrical and electronic appliances 7
4 Operation 8
5 Information for installer 9
5.1 Mounting 9
5.2 Commissioning 12
5.3 Settings in the service menu 13
6 Troubleshooting 15
6.1 Temperature-related faults 15
6.2 Display of a current fault 16

3
Key to symbols and safety instructions
6 720 648 748 (2014/03)
1 Key to symbols and safety instructions
1.1 Explanation of symbols
1.2 Safety regulations
Installation and commissioning
▶ Observe all UK regulations and standards during installation and operation.
▶ Observe all instructions to ensure correct operation.
▶ Ensure the Sense I is installed and commissioned by a competent person.
▶ Do not install the Sense I in wet rooms.
▶ Install and commission the heat source and other accessories according to the
relevant instructions.
▶ Do not connect the Sense I to the 230 V mains.
▶ Before installing the Sense I: electrically isolate the heat source and all other BUS
units from the power supply and secure against unintentional reconnection.
Risk of damage due to operator error
Operator errors can result in injury and/or property damage.
▶ Instruct the customer of the functions and operation of the Sense I.
▶ Make sure that children do not operate the Sense I without supervision.
▶ Make sure that only individuals who can operate the Sense I correctly have
access to it.
Symbol Meaning
▶ Action step
Cross-reference to other parts of this document or to other
documents
• List/list entry
– List/list entry (second level)
Flashing display (e.g. flashing 4)
°C
°F

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Product details
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Damage caused by frost
The heating system can freeze when not in operation.
▶ Leave the heating system on if the outside temperature is below 0 °C.
▶ If the Sense I is used as a controller, system frost protection is not possible. Frost
protection can only be guaranteed where outdoor weather-compensated
controls are used.
▶ Correct any faults immediately.
2 Product details
•Room temperature-dependent controller for heating systems with one
unmixed heating circuit
•Zone controller for one unmixed heating circuit with a wiring module, and max.
4 heating circuits in systems without alternative Building Management Systems
or miscellaneous high level controls. For additional time control of the zones a
Sense II can be used instead of a Sense I (combination of 1 Sense II and a
maximum of 2 Sense I with a wiring module).
•Room thermostat in systems with higher-level control (e.g. Greenstar Sense II
with max. 4 heating circuits)
• For heat sources with 2-wire BUS, e.g. EMS (Heatronic 3®) and EMS 2
• Must be used in conjunction with a suitable compatible time control
• The Sense I may not be used as a controller for heat sources with an external
cylinder primary pump. If an external cylinder primary pump is installed, the
Sense I may only be used as a room thermostat.
• Use in conjunction with Worcester FX controls FR10, FW100, FR110 is not
possible.
• Some settings may not be available, depending on the connected heat source.
Standard delivery:
• Sense I
• Technical documentation
Serial Number (to be entered by the installer)
__ _

5
Product details
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2.1 Product data for energy consumption
The specified product data correspond to the requirements of the EU Regulation No.
811/2013 which supplements ErP Directive 2010/30/EU. The class of the
temperature controller is required to calculate the room heating energy efficiency of
an integrated system and is for this reason incorporated into the system data sheet.
Delivery state
Features of the Sense I Class1)
1) Class according to EU-Regulation No. 811/2013 for designation of packages of
combination heater
[%]1),2)
2) Contribution to seasonal space heating energy efficiency in %
Sense I
Load Compensation: Modulating room thermostat for
use with odulating heaters. Electronic room hermostat
that varies the flow temperature nd output of the heating
appliance to achieve desired room temperature.
V 3,0 
Sense I & a wiring module3)
3) A Greenstar Wiring Centre is required to control the 3 Sense I Intelligent Room
Thermostats
Multi-sensor Room Temperature Control: As class V
but within a heating system comprised of 3 or more
Sense I Intelligent Wired Room Thermostats and,
therefore, an aggregated room temperature
VIII 5,0 
Table 1 Product data for energy efficiency of the Sense I

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Product details
6 720 648 748 (2014/03)
2.2 Technical specifications
2.3 Function as room temperature-dependent controller
The Sense I monitors the room temperature and controls the flow temperature from
the heat source to deliver the required room temperature. Must be used with a
compatible time control.
Load Compensation: The heat output of the heat source changes according to the
deviation between the current and required room temperature. This method of
control is suitable for buildings with one temperature level, e. g. open-plan living
area. There are fewer burner starts and shorter pump runtimes thus increasing
efficiency and reducing fuel consumption. Depending on the connected heat source,
this control mode might possibly be not available.
Flow temperature control: The flow temperature changes according to the
deviation between the current and required room temperature. This method of
control is suitable for major load fluctuations and is suitable for buildings with
different temperature zones. The precision of control is higher and the flow
temperature is limited. This saves fuel.
The pump run times can be reduced with the optimised pump run.
2.4 Function as zone controller
The Sense I can be used as a controller for a maximum of 4 heating circuits without a
higher-level control, in combination with a wiring module (for further information
refer to the technical documentation of the wiring module). For additional time
Technical data
Measurements (W × H × D) 82 × 82 × 23 mm
Rated voltage 10 – 24 V DC
Rated current 4 mA
BUS interface EMS/EMS 2 (2-wire BUS)
Control range 5 – 30 °C
Permiss. ambient temperature 0 – 60 °C
IP rating III
Protection class IP20

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Old electrical and electronic appliances
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control of the zones a Sense II can be used instead of a Sense I (combination of
1 Sense II and a maximum of 2 Sense I with a wiring module).
The control of the zone temperature is thus achieved in the same way as in the case
of the function as room temperature-dependent controller with adjusted flow
temperature control. This is the default factory setting.
2.5 Function as an intelligent room thermostat
The Sense I can be used as an intelligent room thermostat for a higher-level control.
E.g. a Sense II can control 4 heating circuits, with a dedicated Sense I room control
on each (without using a wiring module).
The time program is determined by the higher-level control (e.g. Sense II). At the
Sense I, the required room temperature can be temporarily changed until the next
switching point of the time program. After this, the higher-level control has priority
until the setting at the Sense I is changed again.
3 Old electrical and electronic appliances
Electrical or electronic devices that are no longer serviceable must
be collected separately and sent for environmentally compatible
recycling (in accordance with the European Waste Electrical and
Electronic Equipment Directive).
To dispose of old electrical or electronic devices, you should use the
return and collection systems put in place in the country concerned.

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Operation
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4 Operation
Fig. 1 Overview of control elements
1 Display
2Control knob
• Turn: choose and change settings.
• Press: confirm entry or switch display.
Description of the displays Example
Current room temperature (standard display)
Required room temperature:
▶ Press control knob to briefly show the required room
temperature (flashing).
Service display (maintenance required, further information
Service guide)
▶ Press the control knob to switch to the standard display.
Fault display with fault code and sub code aternating (further
information chapter 6, page 15 and where applicable Service
guide)
▶ Press control knob to briefly show the current room
temperature.
6 720 648 748-01.1O
°C
°F
1
2
°C
°F
°C
°F
°C
°F
°C
°F

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Information for installer
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5 Information for installer
5.1 Mounting
Installation on the wall
Fig. 2 Selecting suitable installation location on a flat wall
Setting the required room temperature Result
▶ Turn the control knob to set the required room temperature.
▶ Press the control knob to apply the setting.
Switch off the heating system Result
▶ Turn the control knob anti-clockwise to reduce the required
room temperature until OFF shows on the display.
The setting is applied automatically. When the heating is
switched off, frost protection for the room is also switched off.
Frost protection of the heat source remains active.
°C
°F
°C
°F
°C
°F
≥ 1000
≥ 1200
750
600
°C
°F
6 720 647 292-03.1O
500

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Information for installer
6 720 648 748 (2014/03)
Fig. 3 Removing Sense I from wall base
Fig. 4 Installing wall base
Electrical connection
Power is supplied to the user interface via the BUS cable. The polarity of the wires is
irrelevant.
▶ Maintain a minimum clearance (100 mm) between each of the BUS subscribers.
1.
2.
3.
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6 720 648 748-04.1O
6 mm 3.5 mm6 mm 3.5 mm

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Information for installer
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▶ Use a cable of at least type H05 VV-... (NYM-J...).
▶ In the case of external inductive interferences (e.g. from PV systems), use
shielded cables (e.g. LIYCY) and earth the shield on one side. Connect the shield
to the building's earthing system, e.g. to a free earth conductor terminal or water
pipe.
▶ Make sure low-voltage cables are routed separately from mains voltage cables
(min. clearance 100 mm).
▶ If more than 2 Sense I are going to be installed, a wiring module may be required
dependent upon the heat source..
▶ If the conductor cross-sections are different, use the junction box to connect the
BUS nodes.
Maximum total length of BUS connections:
•100 m with conductor cross-section = 0.50 mm2
•300 m with conductor cross-section = 1.50 mm2
Fig. 5 Making BUS connection between Sense I and boiler
For designation of the BUS connector terminal and further information on the boiler
please refer to the technical documentation of the boiler.
6 720 648 748-03.2O
EMS/BB
BUS

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Information for installer
6 720 648 748 (2014/03)
5.2 Commissioning
The following tables illustrate Sense I commissioning requirements on installation or
first start-up following a reset.
Zone controller with wiring module
(systems with several heating circuits without higher-level control)
▶ Switch system ON/reset Sense I.
The Display shows 3 dashes, until the connection to the boiler is
established and Sense I asks for heating circuit selection (HC1
appears blinking).
▶ Select and confirm heating circuit (H.C = HC1...HC4).
▶ Close the service level.
The room temperature is displayed and Sense I works as a zone
controller.
Room controller (systems with one heating circuit)
▶ Switch system ON/reset Sense I.
The Display shows 3 dashes, until the connection to the boiler is
established.
▶ Set and confirm A.1 = CO.
▶ Close the service level.
The room temperature is displayed and Sense I works as a room
controller.
Room thermostat (systems with several heating circuits with higher-level
control, e. g. Sense II)
▶ Switch system ON/reset Sense I.
The Display shows 3 dashes, until the connection to the boiler is
established.
▶ Set and confirm A.1 = Fb.
▶ Select and confirm heating circuit (H.C = HC1...HC4).
▶ Close the service level.
The room temperature is displayed and Sense I works as a room
thermostat.
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F

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Information for installer
6 720 648 748 (2014/03)
5.3 Settings in the service menu
Overview of settings
Adjustments
Adjustment
range1)
1) Values in bold = default setting
Description
A.1 CO | Fb | SC Controller (CO), room thermostat (Fb), zone
controller (SC)
H.C HC1 | HC2 |
HC3 | HC4
Heating circuit 1 to 42)
2) Only one Sense I can be assigned per heating circuit.
d.1 2 | 3| 4 Control characteristics:
• 2: Fast (for high operating temperature and
small volume of heating water)
• 3: Average (for radiator heating system and
medium operating temperature)
• 4: Slow (for underfloor heating system and low
operating temperature)
E.1 – 3.0 ... 0.0
... + 3.0
If the room temperature displayed by the Sense I is
wrong, correct the deviation up to ±3 °C3).
3) Temporarily place an appropriate thermometer next to the Sense I for
comparative measurement. Keep away from heat sources for 1 hour.
P.1 4 | 5 Flow temperature control (4) or load
compensation (5)
L.1 1 | 0 Optimised pump run: pump run time at flow
temperature control is maximally shortened. Must
be switched off with buffer tanks in the system.
C.1 C | F Unit of displayed temperatures °C (C) or °F (F)
S.1 nF.12.01 Software version4)
4) Turn the control knob to read off the whole value.
F.1 1 | 01: Factory settings after reset/power failure
0: System settings maintained after reset/power
failure

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Information for installer
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Reset or power failure
In the event of a reset (with F.1 = 1), the Sense I goes back to its standard settings,
i. e. it appears after this as a zone controller with all its factory settings.
On restarting after a power failure, the Sense I appears as the previously configured
control, i. e. it may also appear as a room thermostat or zone controller with the
associated heating circuit allocation.
Operation
The following tables contain examples of how to change a value in the service menu.
Opening the service menu Result
▶ Press and hold control knob until two dashes appear.
▶ Release control knob to display the first setting.
Changing the setting (e.g. heating circuit H.C) Result
▶ Turn the control knob to select a setting.
▶ Press control knob to show the current value.
▶ Press control knob to change the value.
▶ Turn control knob to set the required value.
▶ Press the control knob to store the setting.
▶ Press and hold control knob until the setting is displayed again.
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F

15
Troubleshooting
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6 Troubleshooting
▶ If a fault is displayed, record the fault code and the sub code.
If a fault persists:
▶ Call your installer or Technical Support (contact 0330 123 3366).
▶ Advise type of fault and Serial Number of the Sense I.
6.1 Temperature-related faults
Closing the service menu Result
▶ Press and hold control knob until three dashes appear.
▶ Release control knob.
The display changes to the standard display, and the
programming unit works with the changed settings.
Problem Cause Remedy
The required room
temperature has not
been achieved.
Airlock Bleed radiators and vent the
heating system.
Time program for
the heating circuit
Adjust time program on the higher-
level control (e. g. Sense II).
Flow temperature Set flow temperature higher.
Thermostatic
valve(s) in
reference room
If a thermostatic valve sticks,
release thermostatic valve.
Fully open the thermostatic valve(s)
or ask your contractor to replace
them with manual valves.
The room temperature
is higher than the set
value.
Installation location Contact an installer to move the
Sense I to a suitable location.
The room temperature
fluctuates sharply.
Installation location Contact an installer to move the
Sense I to a suitable location.
°C
°F
°C
°F

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Troubleshooting
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6.2 Display of a current fault
If a fault occurs the display shows the respective fault code and the 3 digit sub code.
In case of 4 digit sub codes, after displaying the fault code the display shows the first
2 digits and then the last 2 digits of the sub code (e. g.: A21 ... 10 ... 01 ... A21 ... 10
...).
Fault code Sub- code
Possible causes and
assistance from the contractor
A21 1001 Sense I in heating circuit 1 incorrectly configured.
▶ If e.g. a Sense II is installed, set A.1 = Fb (room thermostat) at
the Sense I.
▶ If a Greenstar Wiring Center is installed and recognised, set
A.1 = SC (zone controller).
▶ If no higher-level control and only one heating circuit is
installed, set A.1 = CO (controller).
A22
...
A24
1001 BUS signal from the higher-level control for remote heating control
is missing (A22: heating circuit 2, ..., A24: heating circuit 4).
▶ E.g. install Sense II.
▶ Make BUS connection.
A61
...
A64
1081
...
1084
Sense I incorrectly configured (A61/1081: heating circuit 1, ...,
A64/1084: heating circuit 4).
▶ Set A.1 = Fb (room thermostat).
A61
...
A64
3061
...
3064
Sense I incorrectly configured (A61/3061: heating circuit 1, ...,
A64/3064: heating circuit 4).
▶ If e.g. a Sense II is installed, set A.1 = Fb (room thermostat) at
the Sense I.
▶ If a Greenstar Wiring Center is installed and recognised, set
A.1 = SC (zone controller).
▶ If no higher-level user interface and only one heating circuit is
installed, set A.1 = CO (controller).

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Troubleshooting
6 720 648 748 (2014/03)
A61
...
A64
3091
...
3094
Room temperature sensor of the Sense I defective (A61/
3091: heating circuit 1, ..., A64/3094: heating circuit 4).
▶ Replace faulty Sense I.
Fill - The operating pressure of the heating system is too low.
▶ Top up the heating water (no installer needed, please refer to
the technical documentation of the boiler)
Fault code Sub- code
Possible causes and
assistance from the contractor

18 6 720 648 748 (2014/03)
Notes

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6 720 648 748 (2014/03)

Worcester, Bosch Group
Cotswold Way, Warndon, Worcester WR4 9SW.
Tel. [phone]
Worcester, Bosch Group is a brand name of
Bosch Thermotechnology Ltd.
worcester-bosch.co.uk
6 720 648 748
WORCESTER, BOSCH GROUP:
TECHNICAL SUPPORT: 0330 123 3366
APPOINTMENTS: 0330 123 9339
SPARES: 0330 123 9779
LITERATURE: 0330 123 9119
TRAINING: 0330 123 0166
SALES: 0330 123 9669