Worcester Bosch MT10RF MECHANICAL RF THERMOSTAT INSTALLATION AND OPERATING INSTRUCTIONS

Safety instructions in this document are framed and identified by a warning triangle which is printed on a grey background.
Electrical hazards are identified by a lightning symbol surrounded by a warning triangle.
Signal words indicate the seriousness of the hazard in terms of the consequences of not following the safety instructions.
NOTICE indicates possible damage to property or equipment, but where there is no risk of personal injury.
CAUTION indicates possible personal injury.
WARNING indicates possible severe personal injury.
DANGER indicates a possible risk to life.

IMPORTANT INFORMATION

Notes contain important information in cases where there is no risk of personal injury or material losses and are identified by the symbol shown on the left. They are bordered by horizontal lines above and below the text.

ADDITIONAL SYMBOLS

MANUAL INFORMATION

GENERAL
Please read these instructions before starting.
THESE INSTRUCTIONS ARE APPLICABLE TO THE WORCESTER PRODUCT MODELS STATED ON THE FRONT COVER OF THIS MANUAL ONLY AND MUST NOT BE USED WITH ANY OTHER MAKE OR MODEL OF APPLIANCE. THESE INSTRUCTIONS APPLY IN THE UK ONLY AND SHOULD BE FOLLOWED EXCEPT FOR ANY STATUTORY OBLIGATION. IF YOU ARE IN ANY DOUBT CONTACT THE WORCESTER TECHNICAL SUPPORT HELPLINE. THIS ACCESSORY MUST BE FITTED BY A COMPETENT PERSON. FAILURE TO COMPLY COULD LEAD TO PROSECUTION. LEAVE THESE INSTRUCTIONS WITH THE USER OR AT THE APPLIANCE.

ABBREVIATIONS

CH	Central Heating
DHW	Domestic Hot Water
RF	Radio Frequency
LED	Light Emitting Diode
PCB	Printed Circuit Board
m	metre
IP	Ingress Protection
V	Volts
mA	milli Amps
ms	milli seconds
°C	degrees Centigrade

MECHANICAL TIMER SYMBOLS

CONTROLS OVERVIEW

COMFORT
The higher temperature when the dwelling is occupied and heating is required
COMFORT
Move tappets to the inside edge of the clock for the desired period
ECONOMY
The lower temperature when the dwelling is unoccupied or at night, when heating is not required, background heat will be provided if set point is reached.
ECONOMY
Move tappets to the outside edge of the clock for the desired period.

PRODUCT INFORMATION

STANDARD PACKAGE

Receiver for the Greenstar i, Si, CDi, and Highflow CDi combination boilers.
Transmitter
Screws (x2)
Wall Plugs (x2)
Instructions
Batteries (x2)

SPECIFICATIONS

TRANSMITTER

Single channel, radio frequency central heating timer.
Mechanical timer with built-in RF transmitter.
Comfort Temperature dial.
Economy Temperature dial.
Built-in battery housing.
Two AA alkaline LR6 batteries.
LED Battery status indicator.
Maximum signal range of approximately 30 meters (this may vary according to the building‘s construction).

RECEIVER

RF Receiver module with LED receiver status indicator and set up/manual override button.
Pre-wired with PCB connector.

TECHNICAL DATA

Description Units Transmitter Receiver
Dimensions	mm	H158 x W75 x D36.5
Operating voltage	V	2 x AA/LR6 Batteries	24V d.c.
Ambient Operating Temperature	°C	-5 to +45	-5 to +45
Class of protection	—	II	II
Degree of protection	IP	20	20
Accuracy	sec/day	±2.5 @ 25°C	—
Battery life	years	1 approx.	—
Shortest switching period	minutes	15	—
Temperature regulation range	°C	+5 to +30	—
Regulator	—	Electronic	—
Transistor switching capacity	mA	—	5mA @ 24V d.c.
Switching contact	—	—	Open collector

RELATED STANDARDS

BS EN60730-1:2001 + A2:2008
BS EN60730-2-7:1992
Electro Magnetic Compatibility (EMC) and
Radio Spectrum Matters (ERM); Short Range
Devices (SRD) ETSI EN 300 220-1

EC DIRECTIVES

European Union Law Directive (2000/84/EC)
Low Voltage Directive (2006/95/EC)
Electro Magnetic Compatibility Directive (2004/108/EC)
CE Marking Directive (93/68/EEC)

INSTALLATION & COMMISSIONING

DANGER

24V & 230V: Do not touch electrical components or circuits.
Isolate the mains electricity supply before starting any work and observe all relevant safety precautions.
Follow electrostatic discharge precautions. Do not touch the PCB.

FITTING THE RECEIVER

Switch off the boiler at the electrical supply.
Remove the boiler outer casing and control panel fascia to gain access to the heatronic control panel.
1. Release securing screw [A].
2. Pull cover panel [B] upwards to remove.
3. Grip tab [C], pull upwards to disengage clips and pull forward to remove the blanking plat or existing programmer
4. Align connector pins [F] into receptors [G] in the circuit board and push fully home.
5. Feed the ribbon cable [G] into recess [H].
6. Align receiver module [J] and locate clips [D], push into slots then downwards to secure using grip tab [C].
7. Locate the cover panel [B] and secure it with a screw [A].
8. Replace the fascia cover and outer casing before switching on the electricity supply.
9. Switch the boiler on when completed.

PRE-COMMISSIONED TRANSMITTER & RECEIVER LOCATION

The MT10RF Mechanical Thermostat and Receivers are pre-commissioned (paired) at the factory.

Fit and connect the Receiver in the boiler control panel, see page 7.
Locate a flat-bladed screwdriver into the slots in the base plate [B] as shown, and twist to release the Transmitter [A] from the base plate [B]
Switch the electrical power to the boiler.
Fit the batteries correctly into the battery compartment [F] of the Transmitter [A]. The Transmitter and Receiver will communicate immediately. The boiler‘s receiver LED will briefly flash twice when a signal is received.

FUNCTIONAL CHECK

Move the manual switch on the Transmitter to the constant comfort position.
Rotate the Comfort temperature dial to 30 °C.
If the room temperature is less than 30 °C, then within 10 to 30 seconds of making the adjustments detailed above, the LED on the receiver will briefly flash twice while detecting
the transmitter signal and then remain on.
The boiler will fire.
If the operation is successful, rotate the comfort dial to your desired room temperature.
Move the manual switch on the Transmitter to the Automatic position.
Programme the Transmitter to the end user‘s requirements, see page 12.
If the operation is not successful, follow the
The transmitter radio link is set up on page 10.

TRANSMITTER LOCATION

Position the Transmitter [A] as close to the main living area as possible on an inside wall. Mount approximately 1.5m (5‘) above the floor within the maximum range of the boiler‘s Receiver.
Keep the Transmitter away from:

light and heat sources
enclosures and curtains
direct draughts, including fans, air vents, windows, and doors
damp and condensation

THE TRANSMITTER RADIO LINK IS SET UP

The procedure will only have to be followed if problems have been experienced with the pre-commissioned procedure or if:

replacing equipment already installed,
recommissioning existing equipment,

REMOVE THE TRANSMITTER FROM THE BASE PLATE

Locate a flat-bladed screwdriver into the slots in the base plate [B] as shown.
Twist to release the Transmitter [A] from the base plate [B]

ESTABLISH A RADIO LINK

Press and hold button [C] down on the Receiver for approximately five seconds to enter the set-up mode with the LED [D] on continuously. The Receiver is now ready to accept a setup signal from the Transmitter for up to two minutes.
Fit the batteries correctly into the battery compartment [F].
Open the sliding panel to press and release the reset button (see fig 33), to enable the Transmitter sends a set-up signal to the Receiver. Set-up signals are sent for three minutes after pressing and releasing reset.

When the radio link has been established the LED will briefly flash twice and extinguish. This link remains even in the event of a power loss. However, if a radio link has not been established, repeat the set-up procedure: as the batteries are already fitted in the Transmitter, simply press and release the reset button to re-initiate continuous transmission of the set-up signal for three minutes.

TRANSMITTER CLEARANCE & FIXING

NOTICE

All relevant safety precautions must be undertaken. Protective clothing, footwear, gloves, and safety goggles must be worn as appropriate.

TRANSMITTER CLEARANCES

See the diagram above for the minimum area (shown in mm) required for operation.

TRANSMITTER FITTING

CAUTION

Ensure that there are no pipes, electrical cables, or other hazards before drilling.
Hold base plate [B] level to mark securing points [C] and remove base plate.
Drill holes, where marked, 30mm deep using a 6mm diameter drill bit.
Push one wall plug [D] into each hole.
Reposition the base plate [B], check the level, and secure it with screws [E].
Align the outer edge and internal lugs of the Transmitter to the base plate [B] and push to secure.

USER INSTRUCTIONS

TRANSMITTER CONTROLS
INFORMATION:
Slide open panel [A] to reveal details of setting Comfort and Economy [B].

SETTING THE 24-HOUR CLOCK
The unit may be damaged if you rotate the outer ring anticlockwise.

Slide cover [D] off the Transmitter [C].
Rotate the outer ring [E] in direction of arrow (clockwise) until the clock hands and the 24-hour pointer [F] display the correct time.
SETTING HEATING TIMES
Using the 1 to 24-hour marks on the outer ring [G] move the tappets [H – each tappet represents 15 minutes]:
- in for comfort settings
- out for economy setting
SETTING HEATING TEMPERATURES
Rotate the dials [J] or [K] to set the desired room temperature:
- 5 – 30 °C for Comfort
- 5 – 15 °C for Economy
  Typical Comfort and Economy temperature settings are shown below.
SELECTING PROGRAMS
Move the selector switch [L] to set:
- Automatic, Comfort, or Economy.
- Automatic (switches between and uses both Comfort and Economy temperature settings according to the tappets).
- Constant Comfort (continuously using Comfort temperature setting).
- Constant Economy (continuously using economy temperature setting).
Replace cover [D] when finished.

RECEIVER FUNCTIONS

NORMAL OPERATION

LED [A] is continuously on when there is a demand for heating and continuously off when there is no demand for heating.

SIGNAL RECEIVER

LED [A] flashes twice each time a signal is received from the transmitter.

LOW BATTERY STATE

LED [A] flashes slowly, on for one second and off for one second.
Replace the transmitter batteries as shown under the “Battery replacement” section and the receiver will revert back to normal operation.

EMERGENCY MODE

If a signal is not received for 60 minutes LED [A] continues to flash rapidly and the central heating is switched off.
Press button [B] and release for manual override and to switch the central heating on.
Press again to switch the central heating off.

Once a signal is received from the transmitter the receiver and heating will revert back to normal operation.

BATTERY REPLACEMENT
The MT10RF Transmitter includes a battery status indicator [A].

NOTICE

Do not use rechargeable batteries

CAUTION

Do not touch the electrical circuits inside the transmitter

LED Transmitter & mechanical Indicator timer operation Battery condition Replace batteries
OFF	Running	Full	NO
Flashing yellow	Running	Low	YES
Flashing red	Not running	Empty	YES
OFF	Not running	Empty	YES

TO REPLACE THE BATTERIES:

Locate a flat bladed screwdriver into the slots in the transmitter base plate [B].
Twist to lift the transmitter [A] away from the base plate [B].
Remove existing batteries and dispose of in an environmentally friendly manner.
Replace batteries with the same type and ensure that the batteries are correctly oriented in the battery compartment [F] of the transmitter [A].
Align outer edge and internal lugs of the transmitter to the base plate [B] and push fit to secure.
Open the sliding panel, press and release the reset button [C] to start normal operation.

SERVICING & SPARES

TRANSMITTER/RECEIVER MAINTENANCE & SPARES
TRANSMITTER MAINTENANCE

Wipe outer casing with a clean dry cloth, do not use polish or detergents.
Do not touch any circuits inside the transmitter

RECEIVER MAINTENANCE

The receiver unit [B] requires no maintenance and contains no serviceable components.

SERVICING

These units cannot be serviced.
Should the existing unit fail to function correctly, check:
- the receiver times and program settings are correct
- the RF signal link is set up.
- the transmitter batteries are the correct type and fitted correctly.
- press reset button [C] on transmitter [A].

REPLACEMENT PARTS

Transmitter [A]: part number 8 716 106 191 0
Receiver [B] for the Greenstar i, Si, CDi and
Highflow CDi combination boilers
part number 8 716 106 664 0

Dedicated to heating comfort
Worcester, Bosch Group Cotswold Way, Warndon, Worcester WR4 9SW Tel. 01905 754624 Fax. 01905 754619 Worcester, Bosch Group is a brand name of Bosch Thermotechnology Ltd.
www.worcester-bosch.co.uk

Worcester Bosch MT10RF MECHANICAL RF THERMOSTAT INSTALLATION AND OPERATING INSTRUCTIONS

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Worcester Bosch MT10RF MECHANICAL RF THERMOSTAT INSTALLATION AND OPERATING INSTRUCTIONS