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Baxi uSense Wired Smart Thermostat

Installation guide

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Summary of Contents for uSense

Page 1: ...1 Give your customers complete control Baxi uSense Wired Smart Thermostat Installation guide ...

Page 2: ...tallation 5 OpenTherm hot water control combi only 6 Outdoor sensor 7 Technical specifications 8 Gateway LED key You can find more detailed instructions at www baxi co uk Warning High Voltage wiring must only be installed and worked on by a suitably qualified person ...

Page 3: ...mart Thermostat is compatible with all combi boilers using the 230V switched live and also has OpenTherm capability Warning High Voltage wiring must only be installed and worked on by a suitably qualified person 1 Compatibility ...

Page 4: ... package 1 User guide 2 Room unit 3 Screw and plug fixings 4 Mounting bracket Gateway package 1 The gateway 2 Installation guide 3 Screw and plug fixings 4 230V power adaptor 5 Adhesive pad for power adaptor 1 1 2 3 4 5 2 3 4 ...

Page 5: ... sources fireplace radiators light candles etc The maximum cable length from the gateway to the room unit is 50m Prior to installation make sure to 1 Isolate the power to the heating and control system and make safe remove or lock off fuse 2 Check that the power has been isolated using suitable test equipment Wear appropriate Personal Protection Equipment e g protective gloves safety footwear etc ...

Page 6: ...eutral E earth common and call for heat switched live correctly before connecting Incorrect wiring will result in damage to the gateway room unit and boiler which will invalidate the warranty Fix the gateway in position Determine the position of the gateway It should be close to either the boiler or control system junction box Make sure there is enough space around the gateway for installation and...

Page 7: ...l connectors on the boiler or junction box Connect the plugged end of the power adaptor into the 24V terminal on the gateway 1 All cables must be supported 2 The power adaptor and wiring must not be inside the boiler 3 The power adaptor must be supported adhesive pad is supplied for this 24V OT ON OFF R BUS ...

Page 8: ...ntrol wiring to the gateway Read in conjunction with the boiler installation and service manual Gateway terminals ON OFF are for 230V switching Gateway terminals OT are for OpenTherm connection to compatible boilers Gateway terminals R BUS are for connection to the uSense room unit These components are low voltage 230V will damage the room unit and gateway Please see diagram on page 7 1 3 2 1 4 3 ...

Page 9: ...l damage the gateway 2 These will communicate with the boiler to control the heating and other functions 3 These connections can be made using bell wire There is no polarity at the OT terminals 1 3 2 1 4 3 1 24V Power supply 2 OT controlled boiler 3 Room Unit 1 24V Power supply 3 Room Unit 4 ON OFF controlled boiler OpenTherm ON OFF 1 OT ON OFF 1 24V Power supply 3 Room unit 2 OpenTherm controlled...

Page 10: ...e existing thermostat if applicable 3 Fix the room unit backplate to the wall using the screws provided 4 Either use existing thermostat wires or run new wires from the gateway there is no polarity either wire can be connected to either position 5 Trim the wires coming out of the wall connect them into the connector block on the room unit backplate continued opposite ...

Page 11: ...k plate so that they do not interfere with the controller when it is mounted in position 8 Press the room unit onto the backplate until it clicks into place 9 Connect the other end of the wires to the R BUS terminals in the gateway there is no polarity either wire can be connected to either position 10 The connection between the room unit and gateway is low voltage 230V will damage the room unit a...

Page 12: ...should be carried out using a suitable meter and include checks for earth continuity resistance to earth short circuit and polarity 2 Turn on the power to the gateway and check that the gateway and room unit power up See page 19 for LED key 3 Download the Baxi uSense Smart Thermostat App and create a uSense account 4 Use the user guide supplied to set up uSense ...

Page 13: ...default the hot water temperature to 60 C when connected by OpenTherm 2 The room unit will automatically default the heating flow temperature to 80 C when connected by OpenTherm 3 These settings can be adjusted to your required comfort level using the uSense room unit only the boiler controls and App can t adjust these settings when the room unit is connected with OpenTherm ...

Page 14: ...de 0012 Remember to re enter this code to disable installer access when you finish adjusting the heating curve 5 You will see a message Your access level has been updated 6 Click OK 7 Click on heating curve 8 Change the curve to suit the requirements of the user in accordance with the recommendations of the sensor manufacturer 9 Do not adjust any other settings in the Advanced Feature menu as they...

Page 15: ...m Power supply R Bus connection voltage 24V 5 Maximum power consumption 1 5W Electrical connection Maximum cable length for dedicated room unit R Bus 50m Ambient conditions Storage temperature 25 70 C Relative humidity 5 95 C Condensation is not allowed Operating conditions 0 60 C uSense room unit ...

Page 16: ...mperature measurement range 5 60 C Maximum temperature deviation at 20 c 0 3 C Maximum room control overshoot after pre heating 1 C Temperature variation 0 25 C Outside temperature Refer to boiler documentation Temperature control area 10 30 C ...

Page 17: ...m matters R TTE Directive 5 1999 EC EN 1 60950 ITE Safety Part 1 general requirements Low voltage directive 95 2006 EC WEEE directive 96 2002 EC disposal requirements Drop test IEC 32 2 60068 Protection classification IP22 ErP Fiche Information On modulating boiler On modulating boiler with outdoor sensor On On Off boiler Class V VI IV Contribution to space heating energy efficiency 3 4 2 ...

Page 18: ...18 Temperature Input 24V 4W R BUS 24V 100mA ON OFF Max 70W 30 VDC 230 VAC OpenTherm 4 0 compliant Temperature 0 C 60 C Insulation class IP21 Gateway ...

Page 19: ...modes and faults Starting up Gateway in operation No boiler detected check connections and wiring No room unit detected check connections and wiring Internal error turn all power off reinstate and perform setting procedure again For technical support call 0344 871 1545 ...

Page 20: ...escriptions and illustrations provided in this document have been carefully prepared but we reserve the right to make changes and improvements in our products which may affect the accuracy of the information contained in this booklet All goods are sold subject to our standard Conditions of Sale which are available on request Warranty registration For the parts warranty to be activated and maintain...

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