Cobolt Speechmaster Talking Central Heating Controller Instructions Section 1 - Page 3 User Instructions Section 2 - Page 22 Engineering Settings Section 3 - Page 29 Installation Instructions Diagram 1 - Page 34 Base Unit Connections Diagram 2 - Page 35 Wiring Diagrams Section 1 - Central Heating Controller User Instructions Introduction The Cobolt Central Heating Controller is a wireless remote control thermostat, timer, and manual controller for your central heating system. It consists of a Base unit that is connected into the boiler (or other heating device) and a Remote unit that contains the thermostat, timers and control systems. The Remote unit speaks all of the settings to allow you to fully control your central heating. The rest of this section of the instructions assume that the system has been installed and is working correctly. Installation instructions are explained in the last section of this booklet. Location of Remote Unit The Remote contains the temperature sensor and thermostat that control the heating system, therefore please ensure that it is located where it is away from direct sunlight and in an area where there is good air circulation, and not too close to radiators or heaters. Batteries Hold the Remote unit with the speaker grill, at one end of the rear face, at the top. The catch for the battery compartment can be felt just below the grill. Gently press the catch and slide the cover down and off. The compartment holds four AA size alkaline batteries. The lowest (furthest from the speaker) has its positive terminal to the left, next one up to the right, next to the left and top one to the right. The cover is replaced by sliding it up until it clicks into place. General Hold the Remote unit with the speaker grill facing away from you and towards the top. The front face has six buttons in three rows. They are all circular apart from the top right and middle right, which are upward and downward pointing triangles. They are labelled as follows:- Top left is TEMP/TIME. Middle left is ADJUST. Bottom left is HEATING. Top right is UP. Middle right is DOWN. Bottom right is HEATING OVERRIDE. In general, the first press of a button will say the current status or setting of something without changing it. If you press it again within a few seconds, or press the adjust button, you can change the settings of the central heating system. This way you can check the current settings without accidentally changing anything. What is the heating doing now? Press any of the UP, DOWN or HEATING OVERRIDE buttons and the Remote will say whether the heating is currently off or, if it is on, what the thermostat setting is. i.e. It will say "Heating off" or "Heating ... degrees C". Manually turning the heating on or off or overriding a timer If the heating is off, a second press of HEATING OVERRIDE will turn the heating on and it will say the current thermostat setting. Repeated presses of HEATING OVERRIDE will sequentially turn the heating on and off. Alternatively, if the heating is off, a second press of either the UP or DOWN buttons will turn the heating on – the Remote will say the current thermostat setting. Note that if any timers are being used then the timers will take control again at the next timer event. Manually adjusting the thermostat temperature setting If the heating is on, press either the UP or DOWN button and the Remote will say the current temperature setting of the thermostat. Press either button again to adjust the temperature setting up or down by steps of 0.5 degrees C. HEATING BUTTON Press this button and the Remote will say whether the heating is on timer or manual. It will then say whether the heating is currently off or, if it is on, what the thermostat setting is. Finally, if the frost protection setting is on, it will say the temperature setting for the frost protection. If the heating is set to manual then it will say "Heating on Manual". This means that the timers are not used to control the heating at all. The heating is only controlled by the user as described above. If the heating is set to timer then it will say "Heating on Timer". This means that the timers will control when the heating comes on and off, and what the thermostat setting is. In timer mode the user can still turn the heating on or off and temporarily override the timers as described above. The Remote will only say the frost protection setting if it is on. The Frost Protection function is described later. Finding out what the timers are set to The 2nd, 3rd, 4th and subsequent presses of the HEATING BUTTON will say the settings of each of the 12 timers. Each of the 12 timers can be set to turn the heating on or off, with a programmed thermostat setting. Each timer can be set to work on any combination of days of the week. The settings that will be spoken for each timer are as follows: It will say if the timer is disabled. A disabled timer is one that is not being used and has no effect on the heating. It will say the time for the timer event. It will say whether this timer will turn the heating on or off. If on, it will say the thermostat setting as well. It will then say what days of the week the timer is programmed to work on. If it doesn't say any days of the week then the timer is set to work on every day of the week. Changing between timer & manual modes Press the HEATING button to listen to the current settings and then, within a few seconds, press the ADJUST button. The Remote will say "Set heating on timer or manual" followed by the current setting. Use the UP or DOWN buttons to change between timer and manual modes. Press the HEATING button again to exit, or just leave it and the Remote will eventually exit the setting mode. Setting the timers Repeatedly press the HEATING button until it says the timer you want to set and then, within a few seconds, press the ADJUST button. This will enter the setting menu for this timer. The sequence is as follows, assuming you are setting timer 1. First the Remote will say "Set heating timer 1 enabled or disabled" followed by whether it is currently enabled or disabled. Press the UP or DOWN buttons to switch between enabled and disabled. A disabled timer plays no part in the timer function and so there is no other setting to be done and the next press of the ADJUST button will exit the setting menu. If the timer is set to enabled then the following can also be set. Press the ADJUST button again and use the UP and DOWN buttons to adjust the timer hours (the hours part of the time that you wish the heating to go on or off). Press the ADJUST button again and use the UP and DOWN buttons to adjust the timer minutes (the minutes part of the time you wish the heating to go on off). Note: Normally you can adjust the minutes in steps of 5 minutes. However, if you prefer to adjust the minutes to the nearest minute the step size can be changed in Engineering settings. Press the ADJUST button again and use the UP and DOWN buttons to set whether the heating is to come on or go off at this time. Press the ADJUST button again and use the UP and DOWN buttons to set the thermostat (the required temperature at this time). Note: If you have set the heating to go off then the thermostat can not be set and this stage is skipped. Press the ADJUST button again and use the UP and DOWN buttons to switch between "Select days" or "Everyday". Everyday sets all days to on. Select days allows each day to be turned on or off as follows. Press the ADJUST button again and use the UP and DOWN buttons to switch between "On" or "Off" for Monday. Press the ADJUST button and repeat the process for all the days up to Sunday. To finish the setting, press the HEATING or ADJUST button. The HEATING button can be pressed at any stage of the setting sequence to exit the menu. This can be used if only some of the settings need changing. TEMP / TIME BUTTON Press the TEMP/TIME button and it will say the actual temperature followed by the time and day of the week. Adjusting the speech volume Press the TEMP/TIME button and then, within a few seconds, press the ADJUST button. Use the UP and DOWN buttons to adjust the speech volume. Setting the clock and day of the week Press the TEMP/TIME button and then, within a few seconds, press the ADJUST button twice. Use the UP and DOWN buttons to adjust the clock hours. Press the ADJUST button again and use the UP and DOWN buttons to adjust the clock minutes. Press the ADJUST button again and use the UP and DOWN buttons to adjust the current day of the week. To finish setting just do nothing or press the TEMP/TIME button. The TEMP/TIME button can be pressed at any stage of the setting sequence to exit the menu. This can be used if only some of the settings need changing. Frost Protection The Remote has a frost protection function, which can be set to 3, 5, 7 ,10 degrees C or off. This can be used to ensure your home never goes below a particular temperature, and to prevent parts of the heating system from freezing, so reducing the risk of burst pipes. If frost protection is set to 3 degrees C then the heating will come on at that temperature, regardless of timers or manual controls. Please bear in mind that if the batteries in the Remote fail the frost protection function will not work. Also bear in mind that the temperature as measured by the Remote will depend upon the location of the Remote and may not be the same as vulnerable parts of the heating system. Any heating system that is vulnerable to freezing should have a separate hard wired frost protection thermostat. Changing frost protection setting Press the HEATING button and then, within a few seconds, press the ADJUST button twice. Use the UP and DOWN buttons to switch between 3, 5, 7, 10 degrees C or off. Event timers and some ways to use them Modern electronic heating controllers, which combine the thermostat and timer function in one unit, use event timers. Each event, which happens at a specified time, either turns the heating on at a set temperature or it turns the heating off. This provides an extremely flexible and easy way of controlling your heating. Below are some examples of typical ways you might want to use your timers. DAILY PROFILES – Several timers can be set up for the day, allowing the thermostat setting to be automatically adjusted during the day to a suitable setting for that part of the day. So you might have a timer set to 20C first thing in the morning and then have another timer that drops back down to 15C during the day followed by another timer set to 22C for the evening. Finally a timer could turn the heating off last thing at night. MAINTAIN BACKGROUND TEMPERATURE Instead of turning the heating off you may wish to maintain a programmed background temperature when normal heating is not required. So instead of a timer turning the heating off last thing at night it could just set the thermostat to 12C. Similarly you might want to set the heating to 12C during the day, while you are not at home, but to increase it to 20C when you come home in the evening. OFF ONLY you could just use one timer to turn the heating off last thing at night (or set the thermostat to a minimum background temperature). Then you could turn the heating on and adjust the thermostat yourself during the day as you require in the knowledge that it will always get turned off last thing at night automatically (or revert to the background temperature). ON ONLY You could just use one timer to turn the heating on first thing in the morning, you can then manually turn it off last thing at night in the knowledge that your home will be nice and warm in the morning. This is useful if you don't know what time you want the heating to go off in the evening. DIFFERENT MODES You can set some of the timers up for one heating cycle and other timers up for another heating cycle. You could then enable or disable sets of timers depending on what mode you wanted, - for example you might have a different mode of heating when you have guests compared to a normal working day. Effectively you can program timers but temporarily disable them until they are needed. WEEKLY TIMERS Each timer can be set to operate on any combination of days of the week so you can easily program a different heating cycle for the weekend or any other part of the week. Flat Batteries & out of range warning If the Base unit sounds a sequence of up and down tones lasting about 3 seconds then it means the Base unit has lost connection with the Remote. This normally indicates that the batteries in the Remote need changing. It can also mean that the Remote is out of range or that something else is interfering with the communications. The warning tones will repeat every 6 minutes or so from 7am to 11pm. Outside these times it is silent. The warning tones will stop as soon as the batteries are replaced or the Remote is brought back into range. The warning tones can also be stopped by pressing either of the blue buttons on the Base Unit. Manual override on the Base Unit Each press of the right hand blue button on the Base Unit will toggle the heating on and off. One high bleep means the heating is on, a high bleep followed by a low bleep means the heating is off. This method of turning the heating on and off should only be used as a last resort when the Remote is not working. As soon as the Remote starts working again it will take control of the heating. There is no thermostat setting with the Base Unit manual override. The heating will either be fully on or fully off. Resetting the Base Unit Press and hold the left hand blue button on the Base Unit for about 10 seconds until it sounds a sequence of rising bleeps, then release the blue button. The Base Unit has now been reset. Section 2 - Engineering Settings There are a number of other settings that can be adjusted by the user or by the installation engineer. These are called Engineering Settings and are accessed as follows: Note: You will only be given a few seconds to get into the Engineering Settings. This is to help prevent accidentally changing any of the settings. Press the TEMP/TIME button and then, within a few seconds, press the ADJUST button 5 times. The Remote will say "Engineering Setting Off". Within a few seconds press the UP button. The Remote will say "Engineering Setting On". Within a few seconds repeatedly press the ADJUST button to scroll through the Engineering Settings 1 to 9. To access each setting press the UP or DOWN button as follows: ENGINEERING SETTING 1 TEST RADIO LINK Each press of the UP or DOWN button will send a test transmission to the Base unit. The Base unit will bleep up to 5 times to indicate the quality of the test transmission. When there are no bleeps then the Remote and Base unit are either out of range, not on the same channel or there is too much interference. UP and DOWN buttons do the same test but the UP button gives a bleep on the Remote and the DOWN button is silent. (The bleep on the Remote may prevent you from hearing the 5 bleeps from the Base Unit). The remote unit will stay in this mode until another button is pressed, such as TEMP/TIME, to exit the test setting. ENGINEERING SETTING 2 SET RADIO CHANNEL This setting is used to adjust the radio channel from 1 to 9. It will only need changing if other devices are causing interference on the default channel (channel 1). Adjust the radio channel from 1 to 9 with the UP an DOWN buttons. Each time the channel is changed a test transmission is sent to the Base unit. The Base unit will bleep up to 5 times to indicate a signal has been received when the channel of the Remote and Base unit match. This allows you to set the Remote channel after a factory reset or to setup a new Remote to match the Base unit. To set the Base unit to a different channel first set the Remote to whichever channel you want to try and then follow the learn procedure in Engineering Setting 3. ENGINEERING SETTING 3 LEARN RADIO CHANNEL This process is used to automatically set the Remote and Base Unit to the same radio channel. If necessary, use Engineering Setting 2 to change the Radio channel first. Press either UP or DOWN – The Remote sends a continuous test signal on the current channel. Press and hold the right hand blue button on the Base unit for 10 seconds or so, until it sounds a sequence of bleeps, then release the blue button. Within about 10 seconds the Base unit should give about 4 short bleeps to indicate it has found and learned the frequency setting of the Remote. (If it gives 1 longer bleep then the Base Unit has not managed to find and test transmission). Press TEMP/TIME or other key to take the Remote unit out of learn mode. ENGINEERING SETTING 4 FINE TUNE RADIO LINK This setting can be used to fine tune the Radio frequency of the Remote so it exactly matches the Base Unit. It is only needed if you are experiencing problems with the communication between the Remote and the Base Unit. Adjust this setting from -40 to +40 with the UP and DOWN buttons. Each time the UP or DOWN button is pressed the Remote will send a test transmission to the Base unit which will bleep up to 5 times to indicate the quality and tuning of the received radio signal. Adjust this value to the centre of the working band. (i.e. increase the setting until it starts to not work anymore, make a note of the setting. Decrease the setting until starts to not work anymore, make a note of the setting. The final setting used should be the middle (average) of the two noted values). ENGINEERING SETTING 5 CALIBRATE THERMOMETER READING If you think the thermometer is reading a little high or a little low you can adjust the spoken value. Adjust the temperature offset from -5C to +5C in steps of 0.5C by using UP and DOWN buttons. ENGINEERING SETTING 6 SET THERMOSTAT HYSTERESIS The upper and lower switch points of the thermostat can be adjusted. The default is 1 degree C between the upper and lower points. The setting can be increased if boiler cycling (boiler turning on and off too frequently) is a problem. Adjust the thermostat hysteresis from 0C to 3C using the UP and DOWN buttons. ENGINEERING SETTING 7 SET TIMER RESOLUTION When setting the timers, you have the option of adjusting the minutes in 1 minute or 5 minute steps. The UP or DOWN buttons will toggle between 1 and 5 minutes. ENGINEERING SETTING 8 VERSION NUMBER The UP or DOWN buttons will say the version number of the remote unit. ENGINEERING SETTING 9 FACTORY RESET The UP or DOWN buttons will restore the Remote to it's factory settings. The Remote will sound 3 short bleeps, pause for a few seconds, then sound one long bleep. All timers will be deleted and set to disabled, clock will be reset, heating will be set to off, all thermostats will be set to 20C. Section 3 - Installation Instructions Installation of the Base Unit - refer to the wiring diagrams after these instructions. Remember to isolate the AC mains supply before working on the electrical connections. The Base Unit should be mounted in a location where it can be connected to the mains and to the boiler demand electrical connections. This will probably be close to the boiler or close to a thermostat cable. The Base Unit should be mounted in a location free from water and moisture. The Base Unit should not be mounted in a location that is shielded from the radio signals from the Remote. Use the test transmissions in Engineering Settings to test that the final location will work. If there are large metal objects or very thick solid walls between the Base Unit and the Remote then the radio signal may get blocked. Ideally the Base Unit should be mounted horizontally with the blue buttons at the top edge. Remove the four screws on the Base Unit to gain access to the electrical connections and mounting holes. The Base Unit can be screw mounted by the four corner holes in the case or, if these holes are not suitable, other holes can be drilled into the case for mounting purposes. Holes must be drilled into the side or back of the case for the mains cables to exit. The mains cables should avoid passing over the antenna wire situated on the left hand side of the case. Ideally the mains cables should exit at the right hand side of the case. Connect Connection 1 to mains Neutral. Connect Connection 2 to mains Live. Connection 3 is internally connected to Live and can be used as a Live feed. The boiler demand switch (thermostat) connections are made between connection 4 and connection 6. Alternatively, connection 3 (Live feed) can be connected to connection 6 with a short piece of wire and the boiler demand signal (Live) can be connected to connection 4. When the Base Unit has been installed carry out the following setup procedure. Turn the mains supply to the heating system on again. (The Base Unit should give a series of ascending tones to indicate it now has power). Check that the radio communications work in various locations around the house. (See Engineering Setting 1). If there is no radio communication or if the link is not very good then retune the Base Unit. If the range is still not very good then change the radio channel and then retune the Base Unit (See Engineering Setting 2 and 3). Check that the boiler turns on. (Repeatedly press the UP button on the Remote to raise the thermostat temperature until the boiler fires up). Check that the boiler turns off. (Repeatedly press the DOWN button on the Remote to decrease the thermostat temperature until the boiler turns off). Press TEMP/TIME on the Remote and check that the clock says the correct time and day of the week. Correct if necessary (See Setting the clock and day of the week). Cobolt Systems Ltd The Old Mill House Mill Road Reedham Norwich Norfolk NR13 3TL Tel: 01493 700172 Fax: 01493 701037 Email: sales@cobolt.co.uk Website: www.cobolt.co.uk Modified 18/03/2020