Underfloor heating user guide Heat pump systems v16 © Nu-Heat 2016 UNDERFLOOR HEATING HEAT PUMPS SOLAR THERMAL working with you before, during & after your project Nu-Heat Know-How 2 For expert advice call us on 01404 549770 Contents Welcome 04 About the Nu-Heat system 05 System startup 05 Heat pump systems 06 General principle of operation 06 System adjustments 07 Adjusting the flow rates 08 Pump settings 09 Systems with dial thermostats & timeclock (DS) 10 Systems with neoStat or neoAir thermostats 12 Servicing requirements 22 Energy efficiency (ErP) 23 Product support 23 For more information visit www.nu-heat.co.uk 3 System Ref: Every Nu-Heat system is a custom design. Please record your unique system reference number above for future use. Welcome Congratulations, you are the owner of a Nu-Heat warm water underfloor heating system, designed and supplied by Nu-Heat UK Ltd., the largest supplier of domestic underfloor systems in the UK. This manual is provided to help you understand how the system operates and the correct settings required to get the most from your heating. Nu-Heat did not install your system, therefore any installation matters should be referred to the contractor concerned. Please record the installer’s details below. For more information on the operation of your system and also troubleshooting help, please visit the Nu-Heat website at nu-heat.co.uk. Installer details Company: Contact name: Contact telephone no.: Address: 4 For expert advice call us on 01404 549770 About the Nu-Heat System Description Underfloor heating works by pumping warm water through special plastic tubing embedded in the floor. This warms the floor and maintains the room at a comfortable temperature. The Nu-Heat EnergyMasterHP cylinder will provide mains pressure hot water from all of your hot water outlets. With the addition of the optional domestic hot water loop you can be assured of instant hot water from every outlet. Benefits In particular, underfloor heating systems: •Provide a more comfortable heated environment, • Permit unlimited interior design options, • Increase the useable space within a property. Moreover, all these benefits are available from a system which can be significantly less expensive to run than a conventional, radiator-based system. System startup Once your system has been commissioned it should be fully operational. It will be set up to the design temperatures, but it may need adjustment to suit the preferences of the occupants. See Heat Pump User Guide for details. To initially check that your system is turned on and working please follow these simple steps: Underfloor heating Locate the main components of your installation: the heat pump, hot water cylinder, underfloor heating pump/Optiflo manifold assembly(s), thermostats, timeclocks, underfloor heating wiring box. Electricity supply Ensure that the electrical installation is complete and that the heating system is turned on. The location of the main supply ON/OFF switch may vary but is often positioned next to the heat pump. There may be additional switches located at each underfloor heating wiring box, which also need to be on. Water supply Ensure that the water is turned on ready for domestic hot water operation, check that a high flow of water is available from the cold taps. If there is poor flow or none at all, check that the stop-cock for the property is fully open. For more information visit www.nu-heat.co.uk 5 Heat pump systems Key differences between boiler and heat pump systems Heat pump systems and boiler systems are designed to operate very differently. If you have only previously lived with a boiler system it is useful to know the differences to ensure the heat pump system is set up and operated in the most effective way. The main differences will be in terms of the temperature of water that the heat source generates. A typical boiler system would produce a constant flow temperature, which could range from 60-80˚C. A heat pump, on the other hand, has a more sophisticated control system which adjusts the flow temperature, typically 30–50˚C, so that exactly the right amount of heat is fed into the heating system to meet the heat loss of the house at the particular outdoor temperature. Another difference is that the boiler would have been oversized so that it could raise the indoor temperature from whatever it happened to be, up to full comfort temperature. A heat pump is sized to match the load at design operating conditions, and so does not have a surplus with which to raise the temperature quickly. These two differences mean that, with a heat pump as the heat source, the heating must be allowed to run constantly, on a ‘tick-over’ basis, rather than switching it on and off as required. The implication of switching the heating off, and then expecting it to recover the house to full comfort temperature is that it will not have sufficient power output, and so will have to call on the immersion heater backup, which is a more expensive method than the heat pump running constantly. Although not recommended for heat pump systems, instructions for programmable thermostats to allow different temperatures to be set at different times, are shown in this guide. General principle of operation SYSTEM OPERATION SEASONAL ADJUSTMENTS INSTANT HOT WATER With a heat pump system thermostats are supplied to ‘top-limit’ room temperatures. This means that whilst they are capable of stopping flow of heating water to their zone, they cannot raise the room temperature beyond what the flow rate and flow temperature will allow. If a higher room temperature is required, adjustment must also be made at the heat pump. Underfloor heating should be left active all year round as it is controlled by the heat pump controller. See the Heat Pump User Guide for detail of seasonal adjustments. Please see the EnergyMaster HP User Guide for details of instant hot water. When the thermostat is calling for heat it opens the actuator(s) for that heating zone, allowing heated water flow to that zone. LEAVING THE PROPERTY UNOCCUPIED IN WINTER The heating system pump and temperature control are managed jointly by the heat pump’s controller and the room thermostats. 6 If you require to turn the heating off (for example when servicing) always use the main heating isolation switch. Rather than turning the heating system off, it is possible to leave background heating on as frost protection. Each room/zone has the facility to be set to frost protection individually, however it is better to use the heat pump controller to effect frost protection to prevent the controls conflicting. For expert advice call us on 01404 549770 UNDERFLOOR HEATING OPERATION Your underfloor system is designed for performance and economy. Your property may have been supplied either with dial thermostats or programmable thermostats. Each heating zone is controlled by its own wall-mounted thermostat. Whilst programmable thermostats are offered because customers like their aesthetics, Nu-Heat strongly recommends that the temperature to which they top limit should not be varied through the day. System adjustments Note that this user guide describes adjustments to the underfloor heating controls. Adjustments to the heat pump controller are covered in the Heat Pump User Guide. When first setting up the system, it is recommended that all thermostats should be set to the required temperature of 18˚C for bedrooms and 21˚C for other areas. This will allow the heating system performance to be assessed. Use the thermostat to establish whether the room temperatures are being achieved (see the specific section on your thermostat type for information on gauging the current room temperature). • If the heating is reaching the set temperature, but the room is still not warm enough then the first stage is to increase the thermostat setting. This should be only by 1°C at a time. The system should then be left for a day before assessing the impact of that change. Please note that increasing the temperature will increase the system running cost. • If the heating is not reaching the set temperature in only a few rooms then the flow rate to those rooms should be increased, as described on page 8. Unless you feel confident in adjusting the flow rates then you should contact your heating engineer, who can investigate the cause of insufficient heat. • If the heating is not reaching the set temperature in any room then the heat pump controller can be adjusted. Please see the Heat Pump User Guide for details. If after increasing the thermostat setting the heating is still not warm enough then the heat pump controller settings can be altered. Please see the Heat Pump User Guide for details. If the weather is quite mild when the system is initially setup then further adjustment may be required at a later date. Once it has been determined that all rooms are reaching temperature then any that are desired to be at a lower temperature can be regulated using the room thermostat. For more information visit www.nu-heat.co.uk 7 Adjusting the flow rates 1 MANIFOLD COMPONENTS 1 Flow gauges 2 Flow temperature gauge 9 3 Flow adjustment 4 Pressure gauge 5 Filling/drain off valve 6 Actuators 7 Manual air vent 8 Return temperature guage 9 Main isolating valve (flow) 10 Main isolating valve (return) 2 4 3 5 6 10 7 8 5 If additional heat is required in a selected room or rooms the water flow rate(s) serving these areas can be increased. To do this: Shut Open When the system is operating, turn the thermostat up in that room. Identify from the pipe markings at the manifold which actuator head(s) serves the zone you want to change. Note: If the zones are not clearly marked, turn off all the other room stats. a– actuator Flow b – flow gauge Increased flow The zone that is operating will be indicated by a raised button on the top of the actuator (a), and the flow gauge will indicate a flow reading (b). Please note that the button on the actuator can take up to 3 minutes to respond. Each thermostatically controlled zone may be fed by more than one pipe – in each zone all pipes should have equal flow. The underfloor heating pump (c) should be set to constant pressure mode. c – pump 8 For expert advice call us on 01404 549770 Turn the flow gauge – anti-clockwise for more flow, clockwise for less. The red flow indicator will drop further the greater the flow rate. Note: Adjust a little at a time to suit your requirements – after a small adjustment leave the system for 24 hours before making any further adjustment. Increasing the flow to one zone may decrease the flow to others. There is a limit to how much extra flow can be achieved and if, after adjusting one or several zones, further action is required the flow temperature can be increased. Please contact your heating engineer to investigate. See Heat Pump User Guide for details. 3 3 3 3 3 3 3 6 6 6 6 6 6 6 Pump settings ELECTRICAL CONNECTION air 1 1 air 1 1 The pump is supplied with a pre-connected, 1-metre, 3-core lead ready for 3 3 connection to the Optiflo UFH wiring centre. Ensure that the pump is filled and3 vented, use to call for heat and then select the correct pump setting. 6 the controls 6 3 6 6 air SETTING THE CONTROL MODE air air 11 1 1 air 11 3 3 3 3 3 3 6 6 6 6 6 6 i To select the control mode symbol and set the desired delivery head/constant speed, turn the operating knob: Variable pressure DO NOT USE Variable differential pressure (∆p-v): DO NOT USE air air air air air Constant differential pressure (∆p-c): The knob for the control mode ∆p-c is set 1 1 1 1 1 1 1 1 on the right of the middle position. USE THIS SETTING 1 3 3 3 3 3 3 3 NOTE: All settings are retained if the mains supply is interrupted. 6 6 6 6 The LED indicator light Continuous green light 1 1 6 3 3 3 3 6 6 6 6 6 Pump in air venting mode. 3 3 6 air 1 1 3 Pump working normally. 3 6 air 1 1 air 3 6 1 3 3 3 6 6 6 6 X 1 6 he venting function lasts 10 minutes and is indicated with quick green LED 2 T blinking. Noises may be heard when the venting function is running. The process can be stopped by turning the dial to the ‘constant pressure’ setting. After 10 minutes, the pump stops and goes automatically into maximum constant pressure mode. Should another setting be required, the dial should be air air adjusted after venting function is finished. 1 1 1 1 6 6 6 6 air 1 1 1 1 3 3 3 6 6 6 6 6 3 3 6 6 Pump has stopped working due to an internal reason – see page 31. air air 3 3 P 3 1 air 1 3 3 3 6 6 6 o activate the venting function, turn the dial to the centre position; venting will 1 T activate after 3 seconds. 3 NOTE: The venting function removes 3accumulated air chamber of3 3 from the rotor the pump. The venting function on the pump does not vent the heating system. 6 3 1 3 During automatic venting the runs alternately with high and 3 help air bubbles from the pump to agglomerate and to lead direct to the venting 6 6 6 valve of the installation. 6 6 6 6 6 1 1 3 low3speeds to 3 3 6 Flashing red light air 1 1 3 6 6 air 1 6 6 3 3 air 3 1 3 air 11 3 6 6 1 air 1 3 3 Pump has stopped working due to an external reason – see page 31. 1 pump3 31 1 1 3 air 1 11 air 1 1 air 1 air VENTING 1 6 6 air 1 1 air Flashing red/green light Flashing green light air air 6 Constant pressure USE THIS SETTING 1 1 3 6 1 1 3 3 6 6 3 6 air 1 1 1 3 3 6 6 air 3 6 Dial in centre with flashing green LED = pump in venting routine mode 6 air 1 1 1 3 3 6 6 For more information visit www.nu-heat.co.uk 3 6 9 Systems with dial thermostats CONTROLS Call for heat = red = yellow Setback Normal = green 3-position slide switch Up: (1) ON Mid: (timed) º Down: (0) OFF Turn dial to set temperature DIAL To set the maximum temperature, turn the dial to point to the desired temperature. This is typically 21˚C for most rooms, except bedrooms which generally require a lower temperature, e.g. 18˚C. It is best to think about the thermostat as being ‘fine tuning’ for the heating system. • Nu-Heat recommends against making large adjustments – make any adjustments in small increments, and wait for at least 24 hours to assess the effect. • It is best not to turn the thermostat down, for example, when a room is not in use – it can take a long time for the heat pump to increase the room temperature again. • Note that turning the thermostat up very high will not cause the room to reach that temperature – it just means that the heating will reach its maximum capability, uninterrupted. SLIDE SWITCH The slide switch serves no useful purpose in heat pump systems. Because there is no time control associated with the thermostats (timing is controlled by the heat pump) switch positions 1 and º both put the thermostat into the on mode where the dial setting will influence the actuator on the manifold. Position 0 switches the thermostat into frost protection mode. CHECKING THE ROOM TEMPERATURE To assess the room temperature, turn the dial until the indicator changes from red to green (or vice versa) and note where the dial is pointing. Return the thermostat to the previous setting before making any adjustments. 10 For expert advice call us on 01404 549770 SENSORS The heating system must be turned off and electrically isolated before changing sensor switch settings. Each thermostat has six sensor operation modes. These can be selected using switches 1-3 accessible from the back of the thermostat, after removing the front panel from the wall. Internal air sensor: Uses the built in air sensor only. ON Set switches 1 to 4 OFF Remote air sensor (if installed): Uses the remote air sensor only. ON Set switch 2 ON, switches 1/3/4 OFF Internal air sensor & floor limiting sensor (if installed): Uses the built in air sensor but also uses the remote floor sensor to ensure the floor temperature doesn’t exceed a chosen limit. Should the floor temperature be achieved (even if the desired room temperature has not) the heating will turn off. Floor temp. limit Set switch 1 on, switches 2 and 3 OFF25˚C Set switch 1 and 3 ON, switch 2 OFF 27˚C Set switch 1 and 2 OFF, switch 3 ON 29˚C ON Set switch 1, 2 and 3 ON32˚C Set switch 4 OFF always For more information visit www.nu-heat.co.uk 11 Systems with neoStat or neoAir In a heat pump system, it is the heat pump controller that manages time control, but programmable thermostats are often chosen for their aesthetic and ergonomic appeal. In order to attain the best efficiency for the system it is strongly recommended that the top-limiting temperature is not varied throughout the day. A programmable room thermostat is both a programmer and a room thermostat. A programmer allows you to set ON and OFF periods to suit your lifestyle. This User Guide explains how to set the thermostat into non-programable mode (see pages 20 & 25). Room thermostats need a free flow of air to sense the temperature, so they must not be covered by curtains or blocked by furniture. Nearby electrical appliances or direct sunlight may also prevent the thermostat from working properly. Nu-Heat strongly recommends against the use of a neoHub with a heat pump system. The correct way to effect remote control with a heat pump system is through NIBE Uplink. OPTIONAL CONTROL FROM A SMARTPHONE – Pairing the neoHub (not recommended) To pair the neoHub with the neoApp, follow these steps: 1Connect the power supply to the neoHub. 2Connect the neoHub to your router with the Ethernet cable provided. The router will automatically assign an IP address to the neoHub, the Link LED will light up once the neoHub has connected to your network. 3Download the FREE Nu-Heat neoApp from the Apple App Store, Google Play Store or Amazon App Store and register an account. 4Once you have registered your account, press the LOGIN button then press the ADD LOCATION option. 5Press the CONNECT button on the neoHub to add the location to your account. 6When successfully connected, enter a title for the new location (e.g. Home) and configure the time zone for the system. Pairing the neoStat The next step is to pair the neoStat to the neoHub, we recommend pairing the neoStat located nearest to the neoHub first. To add a neoStat, follow these steps: 1From the neoApp, select ADD ZONE, enter a zone title and press ADD ZONE again. 3On the neoStat, use the < / > keys to select setup and press 3. Feature 01 is displayed on screen. 2You now have two minutes to pair the neoStat to the neoHub. 4Press the 3 key to pair the neoStat to the neoHub 5The MESH symbol appears flashing on the display. Wireless communication Where necessary, coverage can be extended using a neoPlug (available from Nu-Heat). 12 For expert advice call us on 01404 549770 Sharing access to the neo system (for systems with neoHub only – not recommended) You can now share access to other users on a full or restricted basis. Ideal uses for the new Share Feature Admin or Guest? • You have more than one member in your household. Admin users have complete control. They can add and remove zones, adjust heating times and temperatures and can setup Geo Location. •You rent out you home and want to give restricted access to guests. •You want to give temporary control to your heating engineer or service partner. To setup a Share Access, follow these steps: 1 Select Share Access 2 Press + to add a user 3 Enter the User Details and press User Mode 4 Select Admin or Guest Guest users have temporary control – so they can adjust the temperature using the scroll wheel but they cant reprogram the heating times and temperatures or add and remove zones. They also don’t have access to the Geo Location feature. Note: To use Geo Location – each user in the home must have their own Share Account. You can remove a user at any time by going in the Share Access menu and selecting the Delete User option. Pairing the neoPlug neoPlug can reinforce wireless signals even if neoHub is not installed. If neoHub is installed, then each neoPlug must be paired with it in order to perform all its functions. 1Plug in the neoPlug. 4Access can now be controlled from anywhere. 2Pair to neoApp using ADD ACCESSORY option. To reset the neoPlug, press and hold the button for 10 seconds until the red LED starts to flash. 3When prompted, press and hold PAIRING button for 5 seconds. The green LED will start to flash, when paired it will stay lit for 2 seconds, then go off. If pairing is not successful, the green LED will flash continuously. Geo-Location Geo Location is not suitable for use with a heat pump. For more information visit www.nu-heat.co.uk 13 Setting up neoAir REPLACING THE BATTERIES Batteries have a fixed lifespan and will need to be replaced occasionally to ensure the thermostat operates correctly. Battery icon flashes The thermostat will inform you when the batteries need to be replaced by displaying the battery icon on screen. To access the battery holder, push and release the compartment door located on the bottom face of the thermostat. Insert the batteries in the empty battery holder, ensuring that each battery is orientated for the correct polarity + / -. 4 x AAA batteries have been supplied with this thermostat. Push the battery holder back inside the thermostat until it is secured in its closed position. Do not use rechargeable batteries with this product! 14 For expert advice call us on 01404 549770 PAIRING WITH THE UH8-RF WIRING CENTRE – neoAir only On the UH8-RF, take note of the numbers set on the rotary switches (UH8-RF ID numbers 01-99). Each UH8-RF on the system needs to have a different ID number. Set your first UH8-RF to 01. WARNING: Mains voltages are present within the wiring centre. At the thermostat: Example: Rotary Switch showing ID No. 99. 1 Use the < / > keys to scroll to SETUP and press 3 once. The display will now show 01 in the top right hand corner. 2 Press the 6 twice so that P2 shows on the display. Press 3 once. 3Use the < / > keys to set the large digits to the board address of the UH8-RF. This is the number set on the UH8-RF rotary switches (you must set a unique board address for each UH8-RF installed). 4Press 3 once. Small digits in the top right hand corner of the display will now flash. 5The UH8-RF is an 8 zone receiver. Use the 6/5 buttons to select the zone this thermostat should be linked to. 6Press 3 to select zone type (Underfloor Heating). 7Use the 6/5buttons to select UF (Underfloor Heating). 8Press 3 to finish and confirm settings. Display will return to the main screen. Wireless communication Where necessary, coverage can be extended using a neoPlug (available from Nu-Heat). For more information visit www.nu-heat.co.uk 15 Systems with neoStat or neoAir cont. MODE 1 – THERMOSTAT OPERATION 1 2 3 4 5 18 17 16 15 14 13 12 6 7 8 9 10 1 Day 10 Programme indicator 2 Mesh symbol 11 Main menu navigation 3 Floor limit symbol 12 Battery symbol (neoAir only) 4 Frost symbol 13 Temperature format 5 Flame symbol 14 Temperature (current) 6 Heat/Cool (neoStat only. Cool not active) 15 Cool on (not used) 7 Floor temp/Room temp 17 Holiday left 8 Set* 18 Hold left 16 Clock 9 Key lock indicator 11 *SET = Displayed when changes are being made to the program schedule or current set point. ERROR CODES When used as a thermostat the screen will display an error code if a fault is detected. E0 = The internal sensor has developed a fault. E1 = The remote FLOOR probe has not been connected. The remote FLOOR probe has not been wired correctly. The remote FLOOR probe is faulty. E2 = The remote AIR probe has not been connected. The remote AIR probe has not been wired correctly. The remote AIR probe is faulty. 16 For expert advice call us on 01404 549770 COOLING The cooling control feature is not used. Temperature display The unit can be configured for different sensor options such as remote air sensor, floor sensor or both. The display will clearly indicate which sensor is being used by showing either ROOM TEMP or FLOOR TEMP before the actual temperature value. When the unit is set to use both the air & the floor sensor, the room temperature will be displayed by default. 1To view the current floor temperature, press and hold the < and > arrow keys for 5 seconds, the floor temperature will then be displayed. Setting the clock To set the clock, follow these steps. 1 Use the < / > keys to scroll to clock 2 Press 3 to confirm selection 3 Use the 6/5 keys to set the hours (24 hour format) 4 Press 3 to confirm selection 5 Use 6/5 keys to set the minutes 6 Press 3 to confirm selection 7 Use < / > keys to set the day 8 Press 3 to confirm selection and return to the main display Setting Non-Programmable Mode Due to the key differences between heat pumps and boilers it is strongly recommended that, for systems with heat pumps, the non-programmable mode is selected for all thermostats. For systems with neoHub this mode must be configured using the neoApp. For systems without neoHub see page 20 for how to set this mode (Feature 12). The neoStat offers three additional program mode options; Weekday/Weekend programming, 7-Day programming and 24-Hour programming. These modes are not recommended for use with heat pumps. For more information visit www.nu-heat.co.uk 17 Systems with neoStat or neoAir cont. Temperature control 1The 6/5 allow you to adjust the set temperature. When you press either key, you will see the word SET and the desired temperature value. Use the 6/5 keys to adjust the set value. 2Press 3 to confirm settings and return to the main display. Note: This new temperature is maintained only until the next programmed comfort level. At this time, the thermostat will revert back to the programmed levels. Temperature hold he temperature hold function allows you to manually override the current T operating program and set a different temperature for a desired period. 1 Use the < / > keys to scroll to HOLD. 2 Press 3 to confirm selection. 3 Use the 6/5 keys to set the desired Hold period. 4 Press 3 to confirm selection. 5 Use the 6/5 keys to set the desired Hold temperature. 6 Press 3 to confirm selection. You will see the HOLD LEFT indication is displayed on screen. The time will countdown the set duration and then revert to the normal program. To cancel a temperature hold, repeat these steps but reduce the HOLD time to 00:00 hrs. Locking the neoStat The thermostat has a keypad lock facility. To activate the lock follow these steps: 1 Use the < / > keys to scroll to HOLD & press 3 for 10 seconds. 2 The display will show 00:00 and you will need to set a four digit pin number. 3 Use the 6/5 keys to enter the first two digits. 4 Press 3 to confirm. 5 Use the 6/5 keys to enter the second two digits. 6 Press 3 to confirm. 7 Record the 4-digit PIN number. The display will return to the main screen and display the keypad lock indicator Ï Note: The keypad lock indicator is only displayed when the lock is active. Unlocking the neoStat To unlock the neoStat press 3 once. The display will show 00:00 and you will need to enter the four digit pin number you set previously. 1 Use the 6/5 and 3 keys to enter the first two digits 2 Use the 6/5 and 3 keys to enter the second two digits The display will unlock and return to the main screen. 18 For expert advice call us on 01404 549770 Frost mode 1 Use the < / > keys to scroll to the POWER icon. The FROST icon will toggle ON/OFF each time 3 is pressed. In this mode, the neoStat will display the frost icon and will only turn the heating ON should the room temperature drop below the set frost temperature (see opposite). If the heating is turned ON whilst in frost mode, the flame symbol will be displayed. To cancel the frost protect mode, navigate to the POWER button again and press 3. Note that the heat pump controller has a frost protection mode, and it is better to use this if frost protection is required, to prevent the controls conflicting. To change the frost setting temperature, see the Feature Table on page 29. Power ON/OFF The heating is indicated ON when the flame icon is displayed. When the flame icon is absent, there is no requirement for heating to achieve the set temperature but the neoStat remains active. 1To turn the neoStat off completely, scroll to the POWER icon and hold the 3 key for approximately 4 seconds until the display goes blank. The display and heating output will be turned OFF. To turn the thermostat back ON, press the 3 key once. Holiday Note that the heat pump controller also has HOLIDAY mode. It is recommended that HOLIDAY mode is set on the heat pump controller, not via room thermostats. In thermostat mode, the HOLIDAY function reduces the set temperature in your home to the frost protection temperature setting (see opposite). In time clock mode, the holiday function maintains the timed output as OFF. The thermostat will maintain this setting for the duration of the holiday and will then automatically return to the program mode on your return. 1 Use the < / > keys to scroll to holiday and press 3 2 Using the 6/5 keys enter number of days holiday 3Press 3 to confirm settings Note: A holiday period does not start until 00:00 the next day. For example, if you set a holiday period on Friday for 2 days, Saturday will be counted as the first day and the thermostat will revert back to the programmed schedule at 00:00 on Monday. To cancel, repeat these steps but reduce the Holiday duration to 00 days. For more information visit www.nu-heat.co.uk 19 Systems with neoStat or neoAir cont. Adjusting the Optional Settings To adjust the settings, follow these steps: 1 Use the < / > keys to select SETUP 2 Press 3 to confirm selection 3 Use the 6/5 keys to scroll through features 4 Use the < / > keys to adjust the setting within each feature 5 Press 3 to confirm settings Setting value Feature number Feature Description Recommended settings Explanation 01 Pairing Used to add zone to neoHub Used to connect the thermostat to the neoHub 02 Switching differential 00 = 0.5˚C 01 = 1.0˚C (Default) 02 = 2.0˚C 03 = 3.0˚C Allows you to increase the switching differential of the thermostat. 03 Frost protection temp. 07˚ – 17˚C (12˚C = Default) The temperature maintained when the thermostat is in Frost Mode. 04 Output delay 00 – 15 Minutes (00 = Default) To prevent rapid switching, an output delay can be entered. This can be set from 00–15 minutes. 05 Up/Down Temp. limit 00˚ – 10˚C (00 = Default) Limit the use of the up and down temperature arrow keys. This limit is also applicable when the thermostat is locked and so allows you to give others limited control over the heating system. 06 Sensor selection 00 = Built in Sensor (Default) 01 = Remote Air Sensor 02 = Floor Sensor Only 03 = Built in & Floor Sensor 04 = Remote Air & Floor Sensor Selects the active sensors. The floor sensor is used as a floor limiting sensor to prevent the floor from overheating. 07 Floor Temp. limit 20˚C - 45˚C (28˚C = Default) Available when feature 06 is set to 02 or 03. Set to the required floor temperature limit (see instructions on page 11) 08 Optimum Start 00 – 05 Hours (00 = Default) Adjusts the start time within the preheat range to allow for current conditions. Heating is brought on before the start time, but at the latest possible moment to avoid unnecessary heating whilst ensuring that the building is warm at the programmed time. 09 Rate of change Minutes to raise by 1˚C This setting is calculated by the thermostat. Number of minutes for 1˚C temperature rise. 10 Cool enable 00 = Disabled 11 Cool set temp Not enabled 12 Program mode 00 = Non–Programmable 01 = Weekday/Weekend (Default) 02 = 7 Day Programming 03 = 24 Hour Mode Modes 01, 02 and 03 are not recommended for heat pump systems 13 20 Setting 04 is for neoStat only. Temp. format 00 = ˚C; 01 = ˚F (00 = Default) For expert advice call us on 01404 549770 Weekday/ Weekend – 4 comfort levels for the weekday and 4 different comfort levels for the weekend. Day Program Mode – Each day has 4 comfort 7 levels that can be programmed independently. 24 Hour Mode – All days are programmed the same and repeat continuously. Select between ˚C and ˚F. Re-calibrating the thermostat Factory reset Warning: The thermostat must be fixed in a wall. When re-calibrating the thermostat avoid warming it with your hands or breath, as this will cause an inaccurate setting. To return all settings to their factory default: To re-calibrate the thermostat, follow these steps: 1 Use the < / > keys to scroll to the POWER icon 2 Press and hold 3 to turn the display OFF 1 Use the < / > keys to scroll to SETUP 2Press and hold the 3 key for 10 seconds. All of the icons on the display will appear for 2 seconds, then the display will show option 1 or 2. 3 Press and hold the 3 and 6 keys together for 10 secs 3Use the < / > keys to scroll between modes (selection will flash) 4 The current temperature will appear on the display. Mode 1 = Thermostat 5 Use the 6/5 keys to configure the new temp value Mode 2 = Time Clock (do not select) 6 Press the 3 key to confirm change and the display will go blank 4 Press the 3 key to confirm selection 7 Press the 3 key once to turn the thermostat ON The thermostat will revert to the main display screen for the selected mode. Note: Factory reset will cancel all parameters that were entered during the set-up and pairing operations. These processes must be repeated after factory reset is completed. Setting thermostats to be Non-Programmable (recommended with heat pump systems) Set Feature 12 on all thermostats to 00 Non-Programmable. Setting the heating periods and temperatures (NOT recommended with heat pump systems) The neoStat offers three program mode options: Weekday/Weekend programming, 7 Day programming and 24 Hour programming. There is also the option to use the thermostat as a Non-Programmable thermostat. When thermostats are connected to the mesh network, the program mode for the system is configured by using the neoApp. The thermostat is supplied with comfort levels already programmed, but these can be changed easily. The default times and temperature settings are; 07:00 / 21˚C (wake) 09:00 / 16˚C (leave the house) 16:30 / 21˚C (return home) 22:00 / 16˚C (sleep) To program the comfort levels, use the < / > keys to scroll to EDIT 1Press 3 to confirm selection 9Press 3 to confirm 2Use the < / > keys to select day / period of week (the selection will flash). 10Use the 6/5 keys to set the temperature 11Press 3 to confirm the settings 3Press 3 to confirm selection 12 Press the > arrow key 4 1 will flash and current time and temperature setting will be shown. 13 2 will flash and current settings will be displayed. 5Press 3 to alter wake settings 6 Use the 6/5 keys to set the hours 7Press 3 to confirm 8Use the 6/5 keys to set the minutes 14Press 3 to alter leave settings 15Repeat these steps to set all comfort levels. 16For any unused periods set time to --:-17Use the < / > keys to scroll to done and press 3 For more information visit www.nu-heat.co.uk 21 Servicing requirements MONTHLY ANNUALLY AS REQUIRED Check the expansion vessel water pressure as displayed on the gauge, the pressure should normally be between 1 bar and 2 bar depending on whether the system is cold or hot. Underfloor heating Whilst there is no requirement for annual servicing it is important that the level of central heating inhibitor is sufficient to protect the system. Replacing the batteries (neoAir only) See instructions on page 14. Please see the Heat Pump User Guide for details of annual system servicing requirements. 22 For expert advice call us on 01404 549770 ||| ERP Y FICIENCY EF G TIN RA The heat pump control system is rated as Class III under Section 5.2.1.2 Temperature control, of EU Commission Delegated Regulation No. 811/2013. ENER G Energy efficiency (ErP) ENER G ERP ERP Product support For further information on the operation of your underfloor heating system and troubleshooting help, please visit the Nu-Heat website at nu-heat.co.uk. For more information visit www.nu-heat.co.uk 23 Online www.nu-heat.co.uk Follow us @nuheatuk See our videos /nuheatuk Telephone 01404 549770 Nu-Heat UK Ltd I Heathpark House I Devonshire Road I Heathpark Industrial Estate I Honiton I Devon EX14 1SD
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