Dimplex ECS250HP-580 300L Heat Pump Cylinder

Installation and User Instructions

For ECS250HP-580.

PDF File Manual, 52 pages, Read Online | Download pdf file

ECS250HP-580 photo
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Important - This manual must be left with the user after Installation!
EC-Eau Cylinder Range
Installation and User Instructions
Heat Pump Cylinders
Up to 300L
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Installation and User Instructions - Transcript

  • Page 1 - English - : Important This manual must be left with the user after Installation ECEau Cylinder Range Installation and User Instructions Heat Pump Cylinders Up to 300L
  • Page 2 - English - : HP Installatio n and User Instructions R00918 10 0915 Page The HWA Charter requires that all members adhere to the following supply fit for purpose products clearly and honestly described supply products that meet or exceed appropriate standards and building and water regulations provide pre and post sales technical support provide clear and concise warranty details to customers For further information on the HWA Charter Membership please refer to the HWA website wwwhotwaterorguk Dimplex is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety efficiency and performance Benchmark places responsibilities on both manufacturers and installers The purpose is to ensure that customers are provided with the correct equipment for their needs that it is installed commissioned and serviced in accordance with the manufacturers instructions by competent persons and that it meets the requirements of the appropriate Building Regulations The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer for future reference Installers are required to carry out installation commissioning and servicing work in accordance with the Benchmark Code of Practice which is available from the Heating and Hot Water Industry Council who manage and promote the Scheme Visit wwwcentralheatingcouk for more information
  • Page 3 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Overall View 0 Overall View Figure 1 Overall view of Heat Pump Cylinder installation process Secondary Return on cylinders ECS175HP580 ECS210HP580 ECS250HP580 ECS300HP580
  • Page 4 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Overall View Figure 2 Overall view of Heat Pump and Buffer Cylinder installation Process Secondary Return only on cylinders ECS180HP75580 amp ECS210HP75580
  • Page 5 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Contents Contents 0 OVERALL VIEW 3 CONTENTS 5 1 INTRODUCTION 10 2 SCOPE OF DELIVERY 10 3 PREINSTALLATION ADVICE 13 31 RISK ASSESSMENT 13 32 SITING CONSIDERATIONS 13 33 COLD WATER SUPPLY 14 34 BUILDING REGULATION G3 DISCHARGE REQUIREMENTS 15 341 Discharge pipe D2 16 342 Worked example 17 343 Termination of discharge pipe 18 35 LIMITATIONS 19 4 INSTALLATION 19 41 COLD WATER INLET WITH INLET CONTROL GROUP 19 411 Correctly site the cylinder 19 412 Install the inlet group 19 413 Expansion vessel 19 414 Balanced cold water supply 20 415 Drain valve 20 42 HOT WATER OUTLET 20 421 Thermostatic mixing valve 20 422 Pipe insulation 20 43 DISCHARGE PIPES FROM SAFETY DEVICES 20 431 Discharge pipe D1 20 432 Discharge pipe D2 21 433 Tundish 21 44 IMMERSION HEATER 22 45 COIL FLOW CONNECTIONS 22 46 COIL RETURN CONNECTIONS 22 47 THERMOSTAT CONNECTION AND INSTALLATION OF THE HEAT PUMP DHW TEMPERATURE SENSOR 23 471 Heat Pump and Buffer Cylinder Schematic 24 472 Connection of the sensor 25 48 CONNECTION OF SECONDARY RETURN 28 5 COMMISSIONING 29 6 MAINTENANCE 30 7 SPARE PARTS 32 8 TECHNICAL INFORMATION AND PRODUCT FICHE 33
  • Page 6 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Contents 81 CYLINDER HEAT EXCHANGER PRESSURE DROP 39 82 CYLINDER ATTAINABLE TEMPERATURE CURVES 41 9 USER INSTRUCTIONS 44 91 GENERAL 44 92 OPERATION 45 921 Water temperature direct electric heating 45 922 Water temperature auxiliary heating 46 93 MAINTENANCE 46 94 TROUBLESHOOTING 47
  • Page 7 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Important Information Precaution This appliance can be used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understanding the hazards involved Children shall not play with the appliance Cleaning and user maintenance shall not be made by children without supervision Note Between the inlet group and the cold water inlet on the cylinder NO isolating device may be fitted as by doing so important safety devices could be isolated It is important to check the precharge pressure of the expansion vessel membrane before filling the cylinder This has been factory set to 3 bar The pre charge should be greater than or equal to 3 bar It is important that the tundish is positioned away from any electrical components Note Means for electrical disconnection must be incorporated in the fixed wiring in accordance with the wiring rules Before removing the cover from the immersion heater isolate appliance using isolating switch Danger of electrical shock Only use suitable electrically insulated equipment
  • Page 8 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Important Information when working inside immersion housing Note The cylinder must be filled with water before switching on the immersion heater Failure to do so will damage the element and void any guarantee on the product The maintenance of this appliance must be carried out by a suitably qualified person only It is recommended to maintain the unit on an annual basis Isolate all electrical supplies from the unit before commencing work Danger of electrical shock CLEANING INSTRUCTIONS Clean outer cladding of cylinder with a soft cloth dampened with warm water only Do not use abrasive or aggressive cleaning materials such as alcohol or petroleum based solvents as this may damage the surface of the product Temperature setting A high level cutout is fitted to the product for each heat source This should never activate under normal operation The maximum possible cylinder temperature attainable by the heat pump is 65C as set on the User Interface The backup immersion heater can produce up to 72C at its maximum setting ie 5 For
  • Page 9 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Important Information convenience the immersion heater is preset to produce 60C If an electronic copy of this manual should be required please contact the manufacturer at the address at the back of this manual Note This appliance is intended to be permanently connected to the water mains and not connected by a hose set Dimplex cannot take responsibility for ensuring safe operation of the appliance outside of the scope of intended usely
  • Page 10 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Scope of Delivery 1 Introduction Thank you for choosing a Dimplex product The ECEau heat pump cylinders are specified with large high surface area heat exchangers specifically sized to match the requirements of Dimplex heat pumps They boast 60mm of low GWP insulation foam together with 100 recyclable stainless steel inner components and a sleek black hard wearing outer shell manufactured from completely recycled materials For more detailed information on product features please see the Technical Data section in this manual NOTE This product has been designed specifically for the purpose of delivering heated domestic and sanitary hot water as part of a pressurised water heating system The package is provided with fittings that comply with Section G3 of Building Regulations WARNING Dimplex cannot take responsibility for ensuring safe operation of the appliance outside of the scope of intended use 2 Scope of delivery Please ensure you check the scope of delivery below before signing any delivery documentation Claims for missing or damaged parts after signing for the delivery will not be accepted
  • Page 11 - English - : Scope of Delivery HP Installatio n and User Instructions R00918 10 0915 Page Table 1 Scope of Delivery for Heat Pump Cylinders These items are supplied factory fitted Only part of the scope of delivery when not supplied as a Dimplex Heat Pump package
  • Page 12 - English - : Scope of Delivery HP Installatio n and User Instructions R00918 10 0915 Page Table 2 Scope of Delivery for Heat Pump with Buffer Cylinders These items are supplied factory fitted Only part of the scope of delivery when not supplied as a Dimplex Heat Pump package
  • Page 13 - English - : PreInstallation HP Installatio n and User Instructions R00918 10 0915 Page 3 PreInstallation Advice Please read the following section carefully before commencing installation If in any doubt please call the appropriate help desk Disregarding the instructions given in this manual in its entirety and any relevant regulations standards and codes of practice will void the guarantee of this product Handling depending on the size of the unit and access to its installation location consideration must be given to the handling of the unit Please note that handling installation and use of this product is subject to the Health and Safety at Work Act If the unit is not installed immediately it should remain in its protective packaging with all pipe protectorsend caps applied to prevent damage and dirt deposit inside the cylinder and the coils Pipe work the pipe runs should be executed as short as possible unused pipe work should be removed and all remaining pipe work should be lagged in accordance with regulatory requirements to prevent heat loss and the formation of condensation Taps and fittings all taps and fittings incorporated in the unvented system should have a rated operating pressure of 06 MPa 6 bar or above 31 Risk assessment The compilation of a risk assessment is strongly recommended before installing the product The following areas require particular consideration in addition to the information required by the Health and Safety at Work Act scalding where appropriate or required by law a thermostatic mixing valve is to be fitted to the hot water outlet of the cylinder see also water borne organisms explosion the unit is fully equipped with all relevant safety equipment to comply with current regulations The correct design and function has been verified by independent third party testing The correct application thereof is the responsibility of the competent installer water borne organisms ie Legionella if applicable a risk assessment should be carried out following the recommendations outlined in the Approved Code of Practice L8 the user preference must be considered when commissioning the system in particular when adjusting the solar and auxiliary system temperature and timer settings 32 Siting considerations When choosing a suitable location for the cylinder the following aspects should be considered structural integrity access for installation operation maintenance and replacement routing of discharge pipe work access to water mains supply hot and cold water distribution pipe work access to suitable electricity supply location in relation to remaining system components such as auxiliary and solar heating system
  • Page 14 - English - : PreInstallation HP Installatio n and User Instructions R00918 10 0915 Page frost protection The heat pump cylinder range is designed to be floor standing vertically mounted indoors and in a frost free environment The cylinder may be located on any flat and level surface provided it is sufficiently robust to support the weight of the cylinder when full of water please see technical data and suitably accessible for replacementmaintenance without specialist tools or lifting equipment as this will void the warranty conditions The position and orientation of the cylinder should be such that easy access is provided for servicing the controls A minimum distance of 400mm in front of the immersion is recommended to allow the replacement of the immersion heater should the need arise When installing the cylinder all labels should be clearly visible and ensure that no pipework hinders any work to be carried out on the various cylinder components Particular care must be taken when placing the cylinder in a garage or outbuilding All exposed pipe work must be correctly insulated to avoid frost damage CLEANING INSTRUCTIONS Clean outer cladding of cylinder with a soft cloth dampened with warm water only Do not use abrasive or aggressive cleaning materials such as alcohol or petroleum based solvents as this may damage the surface of the product 33 Cold water supply For satisfactory and safe performance of the unvented cylinder the water supply must meet the following criteria Minimum dynamic pressure 150 kPa 15 bar Maximum inlet supply pressure 1200 kPa 12 bar Minimum flow rate 15 lmin Max chlorine content 250mgL Max water hardness 200mgL The following instructions have to be followed when installing the cold water mains supply to the cylinder The cold water supply to the cylinder must come directly from the cold water mains after the mains stop valve to the property The cold water inlet pipe work should have at least an inside diameter of 19mm and should meet the requirements of the water regulations for the supply of wholesome water
  • Page 15 - English - : PreInstallation HP Installatio n and User Instructions R00918 10 0915 Page Dimplex recommend an annual maintenance inspection is carried out on the domestic hot water cylinder In hard water areas this should include inspection of the heat exchanger and immersion heater above 120ppm or 120mgl A local water treatment company should be able to offer free water quality testing The heating elements may require periodic de scaling The installer should do this as part of a maintenance agreement If required precautions can be taken to minimise effects of water hardness ie installation of water conditioner or water softener These devices should be installed in hard water areas where high water storage temperatures are required ie greater than 60C storage temperatures particularly when water hardness exceeds 200ppm Should the water cylinder require descaling this must be performed by a qualified technician 34 Building regulation G3 Discharge requirements As part of the requirements of Building Regulation G3 any discharge from an unvented system should be conveyed to where it is visible but will not cause danger to persons in or about the building The tundish and the discharge pipes should be fitted in accordance with the requirements of Building Regulation approved document G3 England and Wales Part P of Northern Ireland and Standard 49 of Scotland
  • Page 16 - English - : PreInstallation HP Installatio n and User Instructions R00918 10 0915 Page 341 Discharge pipe D2 The discharge pipe D2 from the Tundish should have a vertical section of pipe at least 300mm long below the tundish before any elbows or bends in the pipework and be installed with a continuous fall of at least 1 in 200 thereafter The discharge pipe D2 should be made of metal or other material that has been demonstrated to be capable of safely withstanding temperatures of the water discharged and is clearly and permanently marked to identify the product and performance standard Dimplex strongly recommends the use of metal pipework only and Dimplex does not take responsibility for any damage caused from discharges The discharge pipe D2 should be at least one pipe size larger than the nominal outlet size of the safety device unless its total equivalent hydraulic resistance exceeds that of a straight pipe 9m long ie for discharge pipes between 9m and 18m the equivalent resistance length should be at least two sizes larger than the nominal outlet size of the safety device between 18 and 27m at least 3 sizes larger and so on bends must be taken into account in calculating the flow resistance See Figure 3 Table 3 and the worked example Note An alternative approach for sizing discharge pipes would be to follow Annex D section D2 of BS 67002006 A12009 Figure 3 Typical discharge pipe arrangement
  • Page 17 - English - : PreInstallation HP Installatio n and User Instructions R00918 10 0915 Page Table 3 Sizing of copper discharge pipe D2 for common temperature relief valve outlet sizes 342 Worked example This example is for a G½ temperature relief valve with a discharge pipe D2 as fitted on 125 to 300L cylinders having 4 No 22mm elbows and length of 7m from the tundish to the point of discharge From Table 3 the maximum resistance allowed for a straight length of 22mm copper discharge pipe D2 from a G½ temperature relief valve is 90m Subtract the resistance for 4 No 22mm elbows at 08m each 32m Therefore the maximum permitted length equates to 58m which is less than the actual length of 7m therefore calculate the next largest size Maximum resistance allowed for a straight length of 28mm copper discharge pipe D2 from a G½ temperature relief valve is 18m Subtract the resistance for 4 No 28mm elbows at 10m each 4m Therefore the maximum permitted length equates to 14m As the actual length is 7m a 28mm D2 copper pipe will be satisfactory
  • Page 18 - English - : PreInstallation HP Installatio n and User Instructions R00918 10 0915 Page Where a single common discharge pipe serves more than one system it should be at least one pipe size larger than the largest individual discharge pipe D2 to be connected The discharge pipe should not be connected to a soil discharge stack unless the soil discharge stack is capable of safely withstanding temperatures of the water discharged in which case it should contain a mechanical seal which allows water into the branch pipe without allowing foul air from the drain to be ventilated through the tundish there should be a separate branch pipe with no sanitary appliances connected to it if plastic pipes are used as branch pipes carrying discharge from a safety device they should be either polybutalene PB or cross linked polyethylene PEX complying with national standards be continuously marked with a warning that no sanitary appliances should be connected to the pipe 343 Termination of discharge pipe The discharge pipe D2 from the tundish should terminate in a safe place where there is no risk to persons in the vicinity of the discharge Examples of acceptable discharge arrangements are to a trapped gully with the end of the pipe below a fixed grating and above the water seal downward discharges at low level ie up to 100mm above external surfaces such as car parks hard standings grassed areas etc are acceptable providing that a wire cage or similar guard is positioned to prevent contact whilst maintaining visibility and discharges at high level eg into a metal hopper and metal downpipe with the end of the discharge pipe clearly visible or onto a roof capable of withstanding high temperature discharges of water and 3m from any plastic guttering system that would collect such discharges Note As the discharge would consist of high temperature water and steam asphalt roofing felt and nonmetallic rainwater goods may be damaged by such discharges
  • Page 19 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page 35 Limitations The heat pump must be specified correctly to ensure it is compatible with the model of cylinder installed This is to prevent the heat pump malfunctioning when preparing domestic hot water The heat exchangers in this range of cylinders have been specifically designed for heat pump applications Great care must be taken if using these cylinders with other heat sources due to the heat exchange capacity of the product 4 Installation 41 Cold Water Inlet with Inlet Control Group 411 Correctly site the cylinder Install the cylinder in an appropriate location ensuring all of the recommendations have been considered see chapter 32 412 Install the inlet group The inlet group regulates the pressure of the incoming mains water supply to the cylinder and removes any debris that might be water borne Note Between the inlet group and the cold water inlet on the cylinder NO isolating device may be fitted as by doing so important safety devices could be isolated 413 Expansion vessel The expansion vessel is mandatory on all ECEau cylinders and can be connected directly to the cold water inlet group utilising the flexible hose supplied with the vessel The expansion vessel should always be fitted in accordance with the manufacturers instructions No isolating device should be fitted between the water cylinder and the cold water inlet group Furthermore it is recommended to mount the vessel higher than the cylinder to avoid having to drain the cylinder when maintaining and replacing the expansion vessel Figure 4 Connection of the expansion vessel to the inlet group It is important to check the precharge pressure of the expansion vessel membrane before filling the cylinder The precharge should be greater than or equal to 3bar Note The expansion vessel must be installed to the side of the expansion relief valve on the inlet group To do this the blanking plug must be removed and the expansion vessel connected as shown in Figure 5
  • Page 20 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page Figure 5 Detail showing the connection of the expansion vessel to the inlet group 414 Balanced cold water supply If balanced cold water supply is required a connection can be taken from the bottom of the inlet group 415 Drain valve It is also recommended to install a drain valve not supplied in the lowest point of the cold water feed to the cylinder This allows the cylinder to be drained in a controlled manner should this become necessary 42 Hot Water Outlet The hot water pipe work is to be directly connected to the hot water outlet connection on the cylinder see Figure 1 421 Thermostatic mixing valve A thermostatic mixing valve may be required to limit the outlet temperature In this case the valve should be installed following the manufacturers instructions ensuring none of the safety equipment has been isolated ie make sure the connection to the thermostatic mixing valve is taken after the safety equipment of the inlet group 422 Pipe insulation It is recommended to insulate the hot water pipe work from the cylinder to the outlets to reduce the energy requirements for providing hot water It is also recommended to insulate all other exposed pipework such as the TampP to the tundish the coil flow and return and the cold water inlet pipes 43 Discharge pipes from safety devices 431 Discharge pipe D1 The temperature and pressure relief valve must be discharged directly or by way of a manifold via a short length of metal pipe D1 into a tundish and the discharge pipe must be installed in a continuously downward direction and in a frost free environment Water may drip from the discharge pipe of the pressure relief device and this pipe must be left open to the atmosphere The diameter of discharge pipe D1 should not be less than the nominal outlet size of the safety device eg temperature relief valve Where a manifold is used it should be sized to accept and discharge the Expansion Vessel Connection Balanced Cold Water Supply Expansion Relief Valve Cold Water to Cylinder Cold Water from Mains
  • Page 21 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page total discharge from all the D1 discharge pipes connected to it The discharge pipe work from the expansion relief valve must be installed constantly falling to an open point of discharge It is recommended to combine it with the discharge of the temperature and pressure relief valve Note The TampP valve is presealed and if moved the seal will be broken should this occur it will need to be resealed with an appropriate sealant Dimplex part number R008361 432 Discharge pipe D2 For a detailed description of the discharge pipework D2 see chapter 341 433 Tundish The tundish should be vertical located in the same space as the unvented hot water storage system and be fitted as close as possible to and lower than the safety device with no more than 600mm of pipe between the valve outlet and the tundish see Figure 3 Discharge should be visible at the tundish where discharges may not be apparent eg in dwellings occupied by people with impaired vision or mobility consideration should be given to the installation of a suitable safety device to warn when discharge takes place eg electronically operated Note To comply with the Water Supply Water Fittings Regulations the tundish should incorporate a suitable air gap It is important that the tundish is positioned away from any electrical components Figure 6 Wiring diagram for Immersion Heater
  • Page 22 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page 44 Immersion heater The immersion heater has to be connected in accordance with IEE Wiring Regulations and the installer carrying out the work has to be suitably qualified It must be connected through a double pole isolating switch or suitable controller which must have a contact separation of at least 3mm in all poles The wiring diagram can be seen in Figure 6 For further details please see instructions provided with the immersion heater The immersion heater incorporates an independent nonself resetting over temperature cutout Should the over temperature cutout operate the reset pin will be pushed upwards and become level or slightly proud of the cover at the position marked Safety Use a suitable sized implement to reset the pin by pushing it hard into its original position The immersion heater typically cannot be directly switched by the heat pump controller but instead requires a relay Note Should it be necessary to remove the thermostat from the immersion element ensure that the contacts are refitted correctly into the positions on the element Failure to do so carries the risk of overheating the contacts and thus damaging the appliance Note The immersion heater thermostat should not be removed from the immersion heater body A torque of 40 Nm is recommended when tightening up the immersion after it has been removed and refitted The immersion heater thermostat must not be opened under any circumstances Note The cylinder must be filled with water before switching on the immersion heater Failure to do so will damage the element and void any guarantee on the product 45 Coil flow connections If the flow connection is the highest point in the heat pump loop and if the system was not commissioned using a flush and fill pump an adequate device for deaeration must be installed 46 Coil return connections Equally if the return connection is the lowest point in the heat pump loop a suitable drain device should be installed For location of connections see Figure 1 It is recommended that the fittings used to connect to the cylinder are suitable for stainless steel the flow and return should use 28mm compression fittings Not all push fit fittings can be used please check with your supplier When using compression fittings ensure that the connection is not over tightened
  • Page 23 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page 47 Thermostat connection and installation of the heat pump DHW temperature sensor The heat pump can be wired to the cylinder in various ways as described by the chosen supplier To conform to building regulations it is imperative that the hot water circulating pump is installed through the twin thermostat If a non Dimplex heat pump is used in combination with this cylinder or another heat source a two port valve has to be wired after the thermostat ensuring compliance with building regulations Figure 7 Heat Pump Loop Wiring T T T NOTE T1 and T2 must be connected to the heat pump control panel see heat pump installation manual T3 can replace T2 only when a normally open configuration is required To HP Manager From HP Manager Temp control stat High temp cut out stat T4 Earth
  • Page 24 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page 471 Heat Pump and Buffer Cylinder Schematic Figure 8 Heat Pump and Buffer Cylinder Schematic
  • Page 25 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page 472 Connection of the sensor Step 1 Access the sensor mounting plate To do this remove the Dual Cut Out cover plate A by removing the fixing screw and insulation foam B to access the sensor mounting plate C Remove the M5 fixing screws in the four corners of the plate Step 2 Orientate the sensor mounting plate to allow access to the phials four clips in the centre of the sensor mounting plate Be careful not to kink the capillaries that connect the thermostat bulbs The sensor mounting plate will have two vacant slots for additional sensors D Slide the solar sensor into place as shown E A B C D E
  • Page 26 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page Step 3 Move the sensor mounting plate back into its fixing position Be careful not to kink the capillaries that connect the thermostat bulbs Fit the four M5 fixing screws into the cylinder bracket F Tighten the screws until the thermostat bulbs and heat pump sensor are held firmly against the wall of the inner cylinder Note there should be no movement in the phials that are used to hold the bulbs and sensor Care should be taken not to overtighten the screws Step 4 Replace the insulating foam over the sensor mounting plate F
  • Page 27 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page Step 5 Refit the Dual Cut Out cover plate Enter the fixing tab into the slot provided at the base of the enclosure and fit the fixing screw
  • Page 28 - English - : Installation HP Installatio n and User Instructions R00918 10 0915 Page 48 Connection of Secondary Return A secondary return port is installed on the 210 250 and 300L cylinders For cylinders that do not have a dedicated secondary return connection it is possible to install a secondary return by connecting a swept T to the cold water inlet of the cylinder see Figure 9 The secondary return pipe should incorporate a check valve and a WRAS approved circulation pump timer and thermostat to be provided separately Where secondary return circuits are used then an additional expansion vessel may be required The secondary return loop must avoid stagnant water in long pipe runs long waiting times at draw off point for hot water undue water wastage To minimise the energy consumption of the secondary return circuit and to ensure reliable operation it is important to consider the control of the circulation pump to be time and temperature controlled the secondary return circuit pipe work to be insulated the secondary return pump to be of suitable material and specification Figure 9 Secondary return loop To Taps From Taps Secondary Return SweptT HW Outlet
  • Page 29 - English - : Commissioning HP Installatio n and User Instructions R00918 10 0915 Page 5 Commissioning At the time of commissioning complete all relevant sections of the Benchmark Checklist located on the inside back pages of this document The following commissioning procedures only detail the required steps to be taken for the potable water loop and not for the heat pump loop 1 Before making any mains connections to the inlet control group flush the mains pipework out to ensure all debris has been removed so as not to damage the strainer within the combination valve 2 Make final mains connection on combination valve and check all connections and joints to ensure they have been tightened and secured correctly 3 Before turning on the mains supply to the cylinder a hot water tap should be opened preferably on the same floor or the floor below where the cylinder is located 4 Check the precharge in the expansion vessel and ensure it is at least 3 bar Note actual pressure on label on expansion vessel 5 Turn on the supply to the cylinder and fill until water runs from the open hot water tap Continue to flush the system until all debris has been removed 6 Close the hot water tap 7 Check all joints for leaks even those not having been altered especially when replacing a vented cylinder 8 Open temperature and pressure relief valve to ensure proper discharge and check after closing that valve is not dripping 9 Open expansion relief valve to ensure proper discharge and check after closing that valve is not dripping 10 Check all shower outlets toilet cisterns and other draw off points for leaks or dripping especially when replacing a vented unit Open all water outlets to purge air from pipe work and ensure proper operation 11 Adjust timer programmer and cylinder thermostat settings in accordance with client requirements 12 Instruct user in the operation of the unit and hand over this manual advising the owner of annual service requirements 13 Complete the technical data label on the cylinder with legible and permanent writing
  • Page 30 - English - : Maintenance HP Installatio n and User Instructions R00918 10 0915 Page 6 Maintenance After servicing complete the relevant Service Record section of the Benchmark Checklist located on the inside back pages of this document To meet with warranty requirements the cylinder must be serviced annually The maintenance of this appliance must be carried out by a suitably qualified person only It is recommended to maintain the unit on an annual basis Isolate all electrical supplies from the unit before commencing work Danger of electrical shock 1 Draw some water from cold water tap and retain in container 2 Isolate cold water mains supply from cylinder 3 Briefly open temperature and pressure relief valve assure safe discharge and check that valve is not dripping when closed 4 Briefly open expansion relief valve assure safe discharge and check that valve is not dripping when closed The expansion relief valve should be operated regularly to remove lime deposits and to verify that it is not blocked 5 Open hot water tap and release remaining pressure from unit 6 If the system is drained completely for an internal inspection ensure the hot water tap remains open connect a hose to the drain valve and ensure a safe discharge 7 Note the set pressure of the pressure reducing valve Remove cartridge and clean strainer in water provided in container Re assemble pressure reducing valve ensuring the correct pressure is set 8 Periodically the immersion heaters should be removed cleaned and the unit flushed out Check the O ring seal for damage and replace if necessary A torque of 40 Nm is recommended when tightening up the immersion after it has been removed and refitted 9 Check electrical wiring connections and the condition of the cable of the immersion heater and the thermostat 10 The immersion heater boss can also be used for access to view the internal components of the cylinder 11 Recommission unit see chapter 5 Note Air vent located on top of buffer vessel to access remove end cap If the cylinder is not in use for excess of 1 month it must be drained down by a competent person and recommissioned before use Note The immersion must be switched off at the mains before draining the cylinder
  • Page 31 - English - : Maintenance HP Installatio n and User Instructions R00918 10 0915 Page If replacement parts are required please see Figure 10 for part descriptions and part numbers CLEANING INSTRUCTIONS Clean outer cladding of cylinder with a soft cloth dampened with warm water only Do not use abrasive or aggressive cleaning materials such as alcohol or petroleum based solvents as this may damage the surface of the product Waste electrical products should not be disposed of with household waste Please recycle where facilities exist Check with your Local Authority or retailer for recycling advice
  • Page 32 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Spare Parts 7 Spare Parts Figure 10 Replacement part numbers for Heat Pump range of cylinders
  • Page 33 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data 8 Technical Information and Product Fiche Figure 11 Heat Pump Cylinder and Crosssection for reference only
  • Page 34 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Heat Pump Cylinder Range Dimensions Reference Weight kg Reheat time mins Average draw off temperature C Hot water draw off capacity l draw off flow rate ls Heat loss kWh Height mm Outer Diameter mm HW Outlet mm TampP Valve mm Secondary Return mm CW Inlet mm Bottom Immersion mm HP Return mm HP Flow mm Bottom Thermostat mm Table 4 Heat Pump Cylinder Dimensions Note All measurements are taken from the base of the cylinder to the midpoint on the item Determined in accordance with EN12897 at 80C flow temperature and 042ls flow rate GDC Group Ltd Heat Pump Cylinder Range Product Fiche Reference Efficiency Class Standing Loss W Actual Capacity L ECS125HP580 B ECS150HP580 B ECS175HP580 B ECS210HP580 B ECS250HP580 B ECS300HP580 C Table 5 Heat Pump Product Fiche
  • Page 35 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Heat Pump Cylinder Range Product Features Materials inner cylinder Duplex stainless steel LDX2101 outer cylinder HIPS inletoutlet Stainless steel coils Stainless steel insulation 60mm PU foam GWP1 ODP0 Maximum operating conditions potable water temperature 70C heating water temperature 95C operating pressure 3 bar Cold water supply minimum dynamic pressure 15 bar maximum pressure 12 bar minimum flow rate 15 lmin Connections cold water inlet 22mm stainless steel hot water outlet 22mm stainless steel coil flow and return 28mm stainless steel Coil specification heat pump coil surface area m² HX performance heat pump coil kW max working pres Bar Immersion heater 1 ¾ F BSP 3kW 240 V Thermostatic control direct input integral immersion heater thermostat and cut out indirect input integral twin thermostat 10 to 70C and cut out 85C Safety components pressure reducing valve and strainer 3 bar expansion relief valve 6 bar temperature and pressure relief valve ½ 7 bar90C factory pressure test 12 bar Other features Over 60 in volume from recycled materials Surface mounted sensor devices for compatibility and ease of maintenance Approvals KIWA approval number 1112705 KIWA KIWA Guarantee inner cylinder 25 yrs immersion heaters 2 yrs excluding the effects of lime scale or other water borne contaminants other components 2 yrs excluding expansion vessel membrane pressure Table 6 Heat Pump Product Fiche and Features Not including insulation
  • Page 36 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Figure 12 Heat Pump with Buffer Cylinder and Crosssection for reference only
  • Page 37 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Heat Pump with Buffer Cylinder Range Dimensions Reference 12575 15075 18075 21075 Weight kg Reheat time mins Average draw off temperature C Hot water draw off capacity l draw off flow rate ls Heat loss kWh24h Height mm Outer Diameter mm HW Outlet mm TampP Valve mm Secondary Return mm CW Inlet mm Bottom Immersion mm Top Immersion mm HP Return mm HP Flow mm HP Buffer Return mm HP Buffer Flow mm Bottom Thermostat mm Table 7 Heat Pump with Buffer Cylinder Dimensions Note All measurements are taken from the base of the cylinder to the midpoint on the item Determined in accordance with EN12897 at 80C flow temperature and 042ls flow rate GDC Group Ltd Heat Pump with Buffer Cylinder Range Product Fiche Reference Efficiency Standing Loss W Actual Capacity L ECS150HP75580 B ECS180HP75580 B ECS210HP75580 B Table 8 Heat Pump with Buffer Product Fiche
  • Page 38 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Heat Pump with Buffer Cylinder Range Product Features Materials inner cylinder Duplex stainless steel LDX2101 outer cylinder HIPS inletoutlet Stainless steel coils Stainless steel insulation 60mm PU foam GWP1 ODP0 Maximum operating conditions cylinder buffer potable water temperature 70C NA heating water temperature 95C 95C operating pressure 3 bar 3 bar max Cold water supply minimum dynamic pressure 15 bar maximum pressure 12 bar minimum flow rate 15 lmin Connections cold water inlet 22mm stainless steel hot water outlet 22mm stainless steel coil flow and return 28mm stainless steel buffer in and out 28mm stainless steel Coil specification heat pump surface area m² HX performance heat pump coil kW max working pres Bar Immersion heater 1 ¾ F BSP 3kW 240 V Thermostatic control direct input integral immersion heater thermostat and cut out indirect input integral twin thermostat 10 to 70C and cut out 85C Safety components cylinder pressure reducing valve and strainer 3 bar expansion relief valve 6 bar temperature and pressure relief valve ½ 7 bar90C factory pressure test 12 bar Other features Over 60 in volume from recycled materials Surface mounted sensor devices for compatibility and ease of maintenance Approvals KIWA approval number 1112705 KIWA KIWA Guarantee inner cylinder 25 yrs immersion heaters 2 yrs excluding the effects of lime scale or other water borne contaminants other components 2 yrs excluding expansion vessel membrane pressure Table 9 Heat Pump with Buffer Product Fiche and Features Not including insulation
  • Page 39 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data 81 Cylinder heat exchanger pressure drop Figure 13 Heat exchanger pressure drops for 22m² and 28m² coils 00 05 10 15 20 25 Pressure Drop Pa Flow Rate m h 22 m Coil Pressure Drop 00 05 10 15 20 25 Pressure Drop Pa Flow Rate m h 28 m Coil Pressure Drop
  • Page 40 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Figure 14 Heat exchanger pressure drop for and 32m² coils 00 05 10 15 20 25 Pressure Drop Pa Flow Rate m h 32 m Coil Pressure Drop
  • Page 41 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data 82 Cylinder attainable temperature curves Figure 15 Cylinder attainable temperature curves for ECS125HP580 and ECS150HP580
  • Page 42 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Figure 16 Cylinder attainable temperature curves for ECS175HP580 and ECS210HP580
  • Page 43 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data Figure 17 Cylinder attainable temperature curves for ECS250HP580 and ECS300HP580
  • Page 44 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Technical Data 9 User Instructions 91 General This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the appliance by person responsible for their safety Children should be supervised to ensure they do not play with this appliance Please read the following statements carefully as it affects your warranty Please ensure that the installer has fully completed the Benchmark Checklist on the inside back pages of this document and that you have signed it to say that you have received a full and clear explanation of its operation The installer is legally required to complete a commissioning checklist as a means of complying with the appropriate Building Regulations Part G3 England and Wales Part P of Northern Ireland and Section 6 of Scotland All installations must be notified to Local Area Building Control either directly or through a Competent Persons Scheme A Building Regulations Compliance Certificate will then be issued to the customer who should on receipt write the Notification Number on the Benchmark Checklist This product should be serviced annually to optimise its safety efficiency and performance The service engineer should complete the relevant Service Record on the Benchmark Checklist after each service The Benchmark Checklist will be required in the event of any warranty work
  • Page 45 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Operation 92 Operation Once the system has been fully commissioned no user intervention should be required to fully enjoy the comfort and benefits of the unvented hot water cylinder The hot water temperature can be set to various requirements For operation with a heat pump it is recommended to set the hot water temperature to between 45C and 55C this is between 2 and 3 on the dial please refer to Figure 19 for approximate settings Higher temperatures can cause tripping of the high limit thermostat introduce more heat loss from the unit and increase the risk of scalding significantly When turning on a hot tap for the first time after a heat up period there might be a short surge of water This is normal in unvented systems and does not constitute a fault Sometimes the water may appear milky this is due to very fine air bubbles in the water which will clear quickly 921 Water temperature direct electric heating Before removing the cover from the immersion heater isolate appliance using isolating switch Danger of electrical shock Only use suitable electrically insulated equipment when working inside immersion housing The hot water temperature achieved by the direct electric heating element can be adjusted by removing the cover from the immersion heater and adjusting the dial up or down as indicated in Figure 18 Figure 18 Adjustment water temperature direct electric heating element Dial to adjust water temperature
  • Page 46 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Operation 922 Water temperature auxiliary heating The water temperature achieved by the auxiliary heating system depends on the setting of the thermostat on the cylinder AND the auxiliary heating source The adjustment at the cylinder is carried out on the twin thermostat fitted to the cylinder as shown in Figure 19 In the event that the high temperature cutout engages it will be necessary to manually reset the thermostat Use a suitable electrically insulated tool to push the manual reset button and inform the installer If the domestic hot water temperature is controlled by a sensor connected to the heat pump control unit the thermostat on the cylinder should be turned to maximum to avoid any conflicting control signals Figure 19 Adjustment water temperature auxiliary source 93 Maintenance The maintenance of this appliance must be carried out by a suitably qualified person only It is recommended to maintain the unit on an annual basis Isolate all electrical supplies from the unit before commencing work Danger of electrical shock See section 6 Dial to adjust water temperature Manual reset
  • Page 47 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Troubleshooting 94 Troubleshooting Fault Cause Solution A No water from hot water taps A1 Stop valve closed A2 Strainer blocked A3 Pressure reducing valve fitted against flow A1 Open stop valve A2 Turn water supply off clean strainer and recommission A3 Refit with arrow showing in direction of flow B No hot water B1 TimerProgrammer not set correctly B2 Auxiliary heating malfunction B3 Direct heating mal function B4 Auxiliarydirect heating high limit thermostat has tripped B1 Set timerprogrammer correctly B2 Consult auxiliary heating system instructions B3 Call for qualified person to check immersion heater B4 Reset limit thermostats and inform installer C Intermittent water discharge through tundish on warmup C1 Expansion vessel lost charge C1 Check expansion vessel see commissioningmaintenance top up or replace D Continuous discharge D1 Pressure reducing valve not working D2 Pressure relief or TampP valve not seating correctly D3 Malfunction of high limit thermostat or appliance D1 Check pressure after valve and replace if faulty D2 Manually lift valve once or twice to clear debris otherwise replace D3 Check function of thermostats and appliances E Leakage from casing E1 Compressionthreaded joints not formed correctly E1 Reseal joints with care F Hot water from cold tap F1 Hot pipe work being routed adjacent to cold pipe work F2 Leaking seal in mixer tap F1 Insulate hot pipe work or re route F2 Replace seals in mixer tap G Metallic noise from system G1 Pipe work not sufficiently supported G1 Add extra pipe work fixings H Humming noise from system during re heat H1 Air in system H2 Flow rate well in excess of specification H1 Bleed system thoroughly and repressurize H2 Reduce pump speed
  • Page 52 - English - : HP Installatio n and User Instructions R00918 10 0915 Page Dimplex a division of GDC Group Ltd Millbrook House Grange Drive Hedge End Southampton SO30 2DF Tel 0845 600 5111 email aftersalesdimplexcouk wwwdimplexcouk