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CentaurPlus C17-ZW and HRT4-ZW
User Operating Instructions
Combined Timeswitch and Room Thermostat
The Horstmann CentaurPlus ZW combined wireless room stat and time control allows
a combi boiler system to have a room thermostat added without the need for any
additional wiring.
Replacing the existing time controller with the CentaurPlus ZW will allow the room
thermostat to be connected wirelessly producing immediate energy savings in houses
where no previous room thermostat has been fitted.
The device is intended to upgrade existing combi boiler systems that do not have
an existing room thermostat. It is not intended for new installations where it will
be necessary to install two heating zones in order to comply with current Building
Regulations.
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Summary of Contents for Horstmann CentaurPlus C17-ZW
- Page 1 CentaurPlus C17-ZW and HRT4-ZW User Operating Instructions Combined Timeswitch and Room Thermostat The Horstmann CentaurPlus ZW combined wireless room stat and time control allows a combi boiler system to have a room thermostat added without the need for any additional wiring.
- Page 2 General system - explanation for householder The CentaurPlus ZW is a timeswitch which is connected to its own room thermostat - the HRT4-ZW - using the latest Z-wave wireless technology. Where it has been used to replace your existing time control it is likely that there was no room thermostat fitted previously.
- Page 3 The room thermostat will only operate during ‘On’ periods set by the time control which is always indicated by the red neon indicator light on the front. If there is no light then the heating is ‘Off’ and the room thermostat is inoperative. When the timeswitch is ‘On’...
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Page 4: What Is A Programmer
What is a programmer? ... an explantion for householders. Programmers allow you to set ‘On’ and ‘Off’ time periods. Some models switch the central heating and domestic hot water on and off at the same time; while others allow the domestic hot water and heating to come on and go off at different times. -
Page 5: What Is A Room Thermostat
What is a room thermostat? ...an explanation for householders A room thermostat simply switches the heating system on and off as necessary. It works by sensing the air temperature, switching on the heating when the air temperature falls below the thermostat setting and switching it off once this set temperature has been reached. - Page 6 The CentaurPlus C17-ZW Timeswitch The simple instructions contained in this user guide are designed to help with the programming and operation of the unit. 1 14 SET indicator - RUN is the normal position Time of day Switch period symbol...
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Page 7: Manual Overrides
Manual Overrides BOOST FUNCTION - 1 HOUR TeMPORaRy OveRRIde The boost facility will allow the user to boost the system which is currently ‘OFF’ for 1 hour. To indicate the boost being activated BOOST will be shown on the display for the duration of the boost period. - Page 8 Programme Override Facilities With the CentaurPlus C17-ZW timeswitch operating in the normal running mode it is possible to alter the functionality of the programme by means of the SELECT button. The options include: aUTO - Timeswitch follows all programmed ‘ON’ and ‘OFF’ times.
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Page 9: Resetting The Timeswitch
Setting Time of day and date The CentaurPlus C17-ZW timeswitch has a built in clock and calendar. This will mean that you will need to enter the date as well as the time on initial set up or if the factory re-set has been used. - Page 10 Setting the On and Off Times To alter these settings please proceed as follows:- Use PlUS Use PlUS Press the Use PlUS SeT button MINUS MINUS until SeT Press Press MINUS Press buttons buttons indicator eNTeR eNTeR...
- Page 11 HRT4-ZW Room Thermostat User Instructions The Horstmann HRT4-ZW thermostat uses the latest control technology to provide extremely accurate temperature control which will help to keep your energy usage as low as possible without affecting your comfort levels. In fact comfort levels may well be improved as the control accuracy should ensure that the room does not ‘overheat’...
- Page 12 Check the temperature setting is correct and adjust if necessary. Please dispose of the batteries responsibly. Horstmann Controls South Bristol Business Park, Roman Farm Road, Bristol BS4 1UP E-mail: sales@horstmann.co.uk Web site: www.horstmann.co.uk Leaflet number P84367 Issue 1...