Contents: - Tailored Heat Supplies
Contents
1. CIRCUIT NAME FLOW RATE 1 2 3 4 5 6 7 8 9 10 11 CIRCUIT NAME FLOW RATE 1 2 3 4 5 6 7 8 H 10 11 CIRCUIT NAME FLOW RATE 1 2 3 4 5 6 7 8 9 10 11 CIRCUIT NAME FLOW RATE 1 2 3 4 5 6 7 8 9 10 11 y Page 7 a t Room Thermostats Room temperature control is a vital and integral part of the control and design of any underfloor heating system Each room is generally unique in design and has it s own heat performance characteristic Therefore it is important that each room has it s own control To manage this Room Thermostats are used It is important to understand the function they perform o A room thermostat acts as a switch only o They can only switch the system on or off o They cannot control how much heat comes into the room from the heating system the water flow rate and temperature affect heat input Typically all our room thermostats work off a 12V and measure air temperature only However an external floor or air sensor and be used if required This sensor can either be placed in the floor to control the floor temperature or on the wall to measure room temperature When it comes to the placement of the thermostats they are best placed on internal walls and not in direct sunlight We have recommended therm2. Stats located correctly Manifold labelled correctly Sid Sek ei 1 Stats matched to actuators correctly UFH pump working Boiler firing Wiring centres linked Di mi o Correct Flow Rates Commissioning BS1264 4 recommends that the screed should not be heated for at least 21 days However BS8204 1 suggests that the screed be left to dry out as slowly as possible Therefore we would recommend the system be commissioned at least two months and certainly no earlier than 21 days after laying the floor screed 1 Following electrical testing set the clock and room thermostats to operate as you require 2 Set the mixing valve water temperature to 30 C 3 Run the system at this temperature for at least 3 days 4 Slowly increase the water temperature 5 C every day until the maximum of 55 C is reached 5 Run the system at this temperature for a further 4 days 6 Then reduce to the water temperature to suit your requirements d Page 6 a t Balancing the manifold In line with the design undertaken along with individual room controls each group of pipe has its own design flow rates The flow rates for this project are detailed on the AutoCAD provided You may wish to summarise them on the table shown The Top Flow Meter consists of two parts one is a plastic lockshield the other is a variable valve inside the chamber to calibrate the flow rate and
3. WITHIN THE PRE WIRED EWC 1 WIRING CENTRE Emmeti CS 11 THERMOSTAT RANGE U9310020 and u9310040_ D lt OPTIONAL Emmeti H REMOTE SENSOR NTC 10k Note 1 Where the boiler requires a 230V supply connect terminal NA to pump terminal L2 Note 2 Where fitted Over temperature thermostat 28130632 will interrupt room thermostat live supply to all zones Emmeti CS 11 THERMOSTAT RANGE U9310020 and U9310040 D lt OPTIONAL Emmeti H REMOTE SENSOR H NTC 10k Testing The majority of the initial testing should be undertaken by the electrician 1 Switch the Time Clock on 2 Switch on the first thermostat for the first manifold 3 Check the correct actuator is rising and is mounted on the correct group on the manifold 4 Check the pump is running you can check the voltage or feel the vibration on pump casing if you change the speed of the pump you should feel the speed change Check the boiler is running Repeat steps 2 amp 3 for the rest of the thermostats served by the first manifold 7 Switch off all the thermostats served by the first manifold 8 Repeat steps 2 7 for each manifold on the system 9 Finally set the Time clock to the clients preferences and switch all the thermostats on to their desired temperature 10 A check list has been supplied below to assist an Item OK 1 Thermostats programmed correctly Thermostats Operational
4. closest wiring centre e Link the fused spur live to the Live terminal on the closest wiring centre e Using one of the two core cables link the Live and Neutral terminals on the wiring centre to the next wiring centre and repeat as necessary e Using the other two core cable link the primary pump Live to the boiler enable C terminal Link the primary pump neutral to the pump relay N terminal Link the pump L to the boiler enable NA Link the pump earth to the mains earth e For manifold pump sets Link the wiring centre pump relay L to the pump live and the pump relay N to the pump neutral Link the pump earth to the earth Thermostats e Link the screened cable into the wiring centre matching the terminals on the thermostat to the terminals on the wiring centre Actuators e Connect these into the bottom section of the terminal block for each thermostat e Take care to ensure the correct actuator is fitted to the correct group on the manifold Page 4 Wiring Centre Schematic Tailored Heat A Supplies 4 Emmeti EWC 1 230V Wiring Centre U9360010 showing connections to 1 Emmeti thermostats code U9310020 or U9310040 FUSE F1 8A ON d OFF ELEN erfm bel TTT nejt wie Fuse IT OI O Main Isolator d l 230V 10 50Hz o amp ol 6 fs fa wt di teed Page 5 ALL LINKS SHOWN
5. if you turn it up Is the actuator rising up e You can see the buttons with a blue collar is they are fully up no collar if they are down Is the correct thermostat connected to the correct actuator e By turning the thermostat on and off you should see the correct actuator button rising and falling it takes several minutes for a button to rise and then to fall Is there a hot water flow to the manifold and is it being passed through the manifold e Check the temperature gauge on the manifold e Do both manifolds feel warm or hot e Are both isolation handles open pointing in line with the pipes Is the pump running e You can usually feel a slight vibration on the pump when it is running If you change the speed of the pump you can feel the speed change For testing electrical wiring amp components we would recommend that suitably qualified engineer is contacted d Page 9 a t Floor coverings In all cases we would recommend you check and follow the installation procedure given by the floor covering manufacturer and installer In all cases moisture and movement is a big issue to monitor e To limit the effects of moisture ensure the screed is as dry as practicable BS1264 1 suggests the screed will dry at a rate of one day per mm of the first 50mm followed by an increasing time for each mm above this thickness e After the two month period and before any floor coverings are laid we
6. this can be adjusted by turning the plastic nut at the bottom of the flow metre sightglass To adjust the valves to the correct flow rate ensure the underfloor heating pump is running and follow the instructions below 1 Ensure that all the thermal actuators or manual control valves on the return chamber of the manifold are fully open and that the system is hot 2 Lower all the Flow meter Lockshields collars by pushing them downwards 3 Open all Flowmeter Lockshield valves by turning them anticlockwise using the lockshield collar 4 Adjust the flow rates on the flow meter by gripping the black hexagonal nut and turning anticlockwise 5 Start by setting the flow rates approximately between 1 5 2 5 l min on all groups Turn the flow meter clockwise to reduce the flow rate and anticlockwise to increase the flow rate 6 Now reduce the flow rate on the groups that require lower flow rate 7 Now increase the flow rate on the groups that require a high flow rate 8 Repeat steps 5 and 6 till the system is balanced 9 Once balanced to prevent further adjustments being made the flow meter can be locked in place by lifting the lockshield collar 10 Repeat the procedure for each manifold 11 For future reference you can note the flow rates set on the tables opposite NOTE This work can be undertaken on installation by our engineers on request Flow Rate Table
7. Contents Plumbing amp Electrical Information About the manifold Page 2 First Fix Plumbing Page 2 Second Fix Plumbing Page 2 Generic Plumbing amp Wiring Schematic Page 3 First Fix Electrics Page 4 Second Fix Electrics Page 4 Wiring Centre Schematic Page 5 Testing amp Commissioning Page 6 Balancing Page 7 User Information Room Thermostats Page Water Temperature Page Maintenance and Troubleshooting Page Floor coverings and Underfloor Heating Page 10 Contact Details Manufacturers Instructions AutoCAD End Page Page 1 ei Isolation Valves About the manifold Automatic Top Flow Meters Air Eliminator PP el TI HH Flow Manifold H DO DO CO CO DF Thermo Actuator Vd A Pressure Ly IO h iy i Temperature oe Foo Vo wm TT Gauge DI iis Return Manifold u LIEU CT oo CL See 5S ES Male to female D Adapter Drain Fill Point Return Manifold Connects to the return side of the heating system Flow Manifold Connects to the flow side of the heating system Top Flow Meters Show the flow rate of water for each group These can be adjusted to regulate the flow of water through the individual pipe circuits to balance the system as design
8. ation of other controls for Hot Water and radiators reference the generic plumbing and wiring diagram on page 3 1 Power the whole central heating system ideally including the boiler from a 5A fused spur a Run a two core and earth cable 0 75mm_ to the closest wiring centre position b Parallel off if necessary with two core amp earth cables to the other wiring centre positions 2 For the main pump enable run a three core cable 0 75mm to the main pump position from the closest wiring centre position a Parallel off if necessary with a two core cable to the other wiring centre positions 3 For the room thermostats run 3 core and earth cables from each thermostat position as shown on the AutoCAD back to the wiring centre position serving that area 4 For room thermostats in wet rooms locate the thermostat on the dry side of the wall and provide a sleeve to inside the wet room The Thermostat is provided with a remote sensor which can be mounted in the floor or on the wall 5 Providing the wiring centre is located within 600mm of the manifold position no first fix wiring is necessary for the actuators supplied as they are supplied with approximately 600mm of cable ready attached Second Fix Wiring Following the wiring centre diagram on the next page install each component to the system In summary Wiring Centres e Link the fused spur neutral to the Neutral terminal on the
9. ay vary depending on your clients needs Second Fix Plumbing Once fitted the manifold will normally have been pressurised for some time Check the pressure on the manifold Connect the flow and Return pipework to the 1 isolation valves e Note the isolation valves are fitted with a union fitting If this is loosened please retighten and re pressurise the system e The flow isolation valve is normally coloured red and is located on the top manifold chamber The return isolation valve is normally coloured blue and is located on the bottom manifold chamber Often an external hot water tank is supplied with the heat pump system Detailed plumbing schematics should be supplied by you heat pump manufacturer An Expansion vessel should be included in the system this should be supplied by your heat pump supplier We can supply the water volume of the UFH System on request Page 2 le Generic Plumbing amp Wiring sauo7 uneaH Joopapun Joan yea assay X uoisuedx3 WO Ot eme Dua a3no yeay App ane HUPA j UBY joNUOD dwn jeay 30JNOS PUNUS doo JopDat07 punais Josuag ewes S Page 3 First Fix Wiring Generally each manifold is served via a Wiring centre The wiring centre should be located in the immediate vicinity within 600mm of the manifold position shown on the AutoCAD The closest wiring centre is then linked directly to the boiler For the incorpor
10. ed by Tailored Heat Auto air eliminators Removes unwanted air form the system Fill Drain points Used when filling and testing Also used for maintenance Pressure Temperature gauge Shows the flow temperature and system pressure Pump Circulates water around the floor Heating pipes Mixing Valve Regulates the incoming flow temperature to the floor heating system Operating temperatures of between 35 55 degrees centigrade Mixing Valve sensor Senses the mixed water flow temperature Isolation Valves These are used to isolate the underfloor heating circuit for maintenance and are also used when filling and testing the system Thermo Actuator Opens and shuts the valve on each group It is controlled by the room stat in each controllable area First Fix Plumbing PLEASE CONSULT YOUR PLUMBER FOR THIS Manifold flow rates and pressure drops are available on request to assist with the sizing of flow and return pipe work For the plumbing first fix run appropriately sized pipe work to the left hand side of each manifold position as shown on the AutoCAD Usually an extra Flow pump is supplied This is sized to meet the needs of the underfloor heating system This should be placed after the heat pump Subject to pipe sizing and routing it may be necessary to fit local pumps to assist with the performance of the system For incorporation into the whole plumbing scheme a general schematic is shown below This m
11. into the depth of the screed Hardwood This floor covering is also compatible with underfloor heating although some consideration has to made with the heating design The designer will limit the temperature of the floor so that it does not damage the wood or glues used with it 2 Do not lay hardwood that is thicker than 22mm 3 Do not lay felt underlay underneath the flooring as this is a very good insulator Movement is a big factor with hardwood The manufacturers seem to recommend that a narrow board with low moisture contents is used When installing the hardwood there are many different methods consult your supplier for their recommended method Carpets When considering carpets the Underfloor Heating Manufacturers association recommends that the combined TOG rating of the Carpet and Underlay does not exceed 1 5 TOGs Some general guidelines that may help are e Do not use felt underlay e Use a modern underlay such as the Gates Technics 5 product e Do not use pure wool carpets as their structure traps air and insulates use an 80 20 blended one Do not use a felt backed carpet use a woven backed one e Go for a dense pile carpet as this is less likely to trap air e The thinner the carpet the better it performs with underfloor heating d Page 10 4
12. ostat positions on our AutoCAD design With your system you have been supplied with the room thermostats we have attached the manufacturers operating instructions Water Temperature Control General Principles Apart from the individual room controls given by the room thermostats Water Temperature is another important element of control for the Tailored Heat System The water temperature directly affects the output of the system For example 1 If the water temperature is 30 C in winter then the rooms will not achieve their designed temperature not matter what the thermostat is set to 2 Conversely if the water temperature is 50 C in the summer then room may get too warm and too quickly before the thermostat switches it off With underfloor heating systems accurately controlled water temperature can improve both comfort levels and efficiency The Water Temperature control is managed by the Heat pump controls Please consult the heatpump user manual for details d Page 8 a t Maintenance The underfloor heating system should not require maintenance as such All pumps provided are self regulating and require no maintenance However it is suggested that you 1 Periodically six monthly check that the compression fittings are tight i e the 27mm silver nut between manifold and plastic underfloor heating pipe Be careful doing this on the return manifold as you will need to grip the flow mete
13. r with a adjustable wrench to stop it from moving 2 Periodically check the pressure of the system to ensure that there is water present We would normally expect to see a pressure in the region between 1 2 0 bar If you are ever unsure that the system is maintaining pressure simply isolate the manifold by turning the two red handles on the isolation valves noting the pressure and leaving for approximately one hour When you return the pressure may have dropped as long as it has not dropped to zero then the system is holding pressure Troubleshooting Detailed over are some common problems that may arise in the operation of the system The pressure shown is too low e Most systems will lose pressure over time e You can top up the pressure from the mains supply to the boiler This should improve the pressure of the whole system e Ifyou think there is an issue with the manifold isolate the manifold by turning the two red handles on the isolation valves noting the pressure and leaving for approximately one hour When you return the pressure may have dropped as long as it has not dropped to zero then the system is holding pressure My rooms are not heating up Is the system switched on to occupied mode o Check time clock settings Is the thermostat switched on and calling for heat e You can check the thermostat by turning the temperature dial you should hear it click off as you turn it down or on
14. would recommend the system is heated and cooled several times to drive of moisture As the screed cools moisture is sucked into the dry areas as the screed is warmed the top layer is dried out SEE PAGE 6 e Normally when laying the floor covering the common recommendation is that the underfloor heating system is switched off approximately 48 hours before the covering is laid and left for 48 hours after laying before switching the system back on Detailed below are some basic guidelines to assist when choosing your final coverings Vinyl When using this floor covering please ensure that suitable glue is used when laying and fixing this in position PLEASE NOTE THAT THE FLOOR SURFACE TEMPERATURE CAN BE UP TO 33 DEG C Tile or Stone This floor covering is the most compatible with underfloor heating as it transmits the heat very well e When tiling use a good quality tile adhesive as this is normally flexible and can take a small amount of movement by the screed e Stone can be laid at any thickness The only issue this raises is that the thicker the stone the larger the thermal mass and slower the reaction time to warm up and cool down the floor e When laying the stone use a continuous adhesive bed to ensure continuity between the screed and the stone NOTE For thick stone areas in excess of 40m a movement joint should be considered This should pass through the stone and approximately 1 3
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