EcoAdvance Dual Plate Heat Interface Unit Art.nr. 52057 - Rev. A - 26-04-2016 Changes and misprints reserved Installation & user manual Store this manual at your unit
Explanation symbols and abbreviations Symbols CAUTION, general safety remark Phillips screwdriver CAUTION, risk of electrical shock insulated Insulated flathead screwdriver CAUTION, hot surfaces, risk of burns Important note 230 V Requirement of 230 Volt Alternating Current Dispose component Recycle component if possible Wrench, manual tool Drill, motorized tool Manual operation, no tools needed Abbreviations DH District Heating PE Protective Earth CH Central Heating 0C Temperature in degrees Celsius DHW Domestic Hot Water kpa Pressure kilopascal DCW Domestic Cold Water kg Weight in kilograms VAC Volts Alternating Current mm Distance in millimeters VDC Volts Direct Current PN Pressure class in Bar A Current in Ampere Thread size in inch (ISO 228/1) N 230VAC Neutral HIU Heat Interface Unit L 230VAC Live (phase) ABV Automatic Bypass Valve
Contents Overview 3 Overview options 4 Dimensions 5 Technical data 6 Application 7 General requirements 9 Electrical requirements 12 Schematic 13 Installation 15 Filling the unit 19 Air venting the unit 20 Room thermostat 21 Commissioning 22 Secure casing 23 Service & inspection 24 Draining the CH system 25 Power supply 26 Pump settings 27 DHW circulation pump (optional) 29 Differential pressure valve 30 Troubleshoot (end-user) 31 Troubleshoot (technician) 32 EC declaration of comformity 34 2
Overview DH Supply DH Return 1 2 3 4 5 24 23 6 7 8 9 10 11 22 21 12 20 19 18 17 13 14 15 16 CH Supply CH Return DHW Return circulation DHW DCW 1 Strainer DH supply 2 Back casing 3 Temperature sensor DH supply 4 Sensor pocket heat meter 5 Automatic air vent CH 6 Electronics 230 VAC 7 Electronics 24 VDC 8 Heat exchanger CH 9 Temperature sensor DHW 10 Heat exchanger DHW 11 Circulation pump CH 12 Control valve DHW 13 Temperature sensor DH return for DHW 14 Strainer CH return 15 Fill/drain valve 16 Flow sensor DCW 17 Temperature/pressure gauge CH return 18 Temperature/pressure sensor CH supply 19 Pressure relief valve CH (3 Bar) 20 Temperature sensor DH return for CH 21 Spool piece for heat meter 22 Control valve CH 23 Expansion vessel 24 Manual air vent CH 3
Overview options The unit has several options available depending on requirements. The basic unit can be equiped with any combination of the following: Option A1: Spool piece, used when neither options A2 or A3 are required. Option A2: Anti-fraude valve, possibility of remotely isolating the unit from the DH network if required. Option A3: Differential pressure control valve, to balance differential pressures between the DH supply and return. Only required where the differential pressure exceeds 250 kpa (max. 450 kpa). Option B: Water hammer arrestor, reduces water hammer within the DHW circuit. Option C: DHW circulation unit, to provide continuous flow in the DHW circulation circuit to allow quicker response times at the tap where extended pipe runs are unavoidable. Unit must be set to comfort mode by the installer when circulation unit is fitted. Option D: Decorative casing, attractive white coated steel casing. Option E1: Standard size DHW heat exchanger. Option E2: Large size DHW heat exchanger, for enhanced performance. Option A1 Option E1 Option A2 Option E2 Option A3 Option B Option C Option D 4
Dimensions 50 120 note: This dimension can be reduced by mounting the isolation valves directly on to the top of the unit. 275mm Top to bottom flanges of unit = 625mm casing height = 640mm 1150mm 195 60 60 60 60 55 45 95 490mm 5
Technical data Description Value Nominal primary supply temperature 800C Maximum primary supply temperature 900C Nominal DHW supply temperature 550C Minimum primary supply temperature 550C * Primary connections ¾ Female / 18mm Mains & DHW connections ¾ Female / 18mm Central heating connections ¾ Female / 18mm Pressure relief 15mm Maximal primary differential pressure (without dp regulator) 250kPa Maximal primary differential pressure (with dp regulator) 450kPa Minimal primary differential pressure 50kPa ** Pressure class DH circuit PN10 Pressure class CH circuit (3 bar safety valve) PN10 Pressure class DHW circuit PN10 Casing width 490mm Casing height 640mm Casing depth 275mm Weight (basic version) 24kg *** Electrical supply info 230VAC 50 Hz Fuse rating 3A Unit DHW modes Economy / Comfort Room thermostat The unit can be equiped with a on/off thermostat that has potential free contacts or a Honeywell round on/off (T87G2014) thermostat with power stealing technology. * Minimum required DH supply temperature is DHW setpoint + 50C with a minimum of 550C. ** Depends on requested DHW output and available DH supply temperature. *** Unit weight may vary depending on present options built into the unit 6
Application The HIU EcoAdvance dual plate is used to provide domestic hot water and central heating in residences connected to a district heating system. Status indicator LED Status indicator LED Green blinking slow (1x per second): Green blinking fast (2x per second): Blue blinking: Red blinking: White continuous: No LED: Stand-by condition (no CH heat demand) Heating condition (CH heat demand) Tapping condition Error mode Service mode (installer only) No power / switched off 7
Operation Central heating The heat exchanger physically separates the district heating network from the central heating circuit. The application minimizes the risk of contamination of district heating water as well as the risk and consequences of leakage in the central heating system. The electronic regulator in the unit, together with electronic control valves and temperature sensors regulates the temperature of the central heating. CAUTION! Components, pipes and radiators in, and connected to, the unit may be hot. The heat interface unit is designed for usage with centralized heating systems up to 900C. The pipes and components in the set as well as the pipes and radiators in the central heating installation can reach these temperatures. Contact may lead to burns. Domestic Hot water The set is equipped with single wall plate heat exchangers. The heat exchanger transfers the heat from the heat distribution system to the domestic hot water. The electronic regulator in the unit, together with electronic control valves, temperature sensors and flow sensor regulates the temperature of the hot water to its set point (default 550C). The unit has two DHW keep hot modes, Eco or Comfort mode. The default setting is Eco mode and in this mode the heat exchanger is kept up to temperature for 1 hour after the last hot water draw off. After 1 hour of inactivity the temperature is allowed to drop to minimize energy consumption. The comfort mode setting is optional and can be selected at the point of commissioning. In this mode the heat exchanger is continuously kept warm for quicker hot water delivery. To prevent legionella from growing the heat exchanger is heated to 550C every 24 hours for at least 30 minutes. When the unit is fitted with a circulation pump, the unit must be set to comfort mode. CAUTION! Hot water The hot water temperature is regulated to approximately 550C (default value). If there is a power outage during tapping conditions the set will stop regulating the domestic hot water temperature. This may lead to a domestic hot water temperature that is higher or lower than its set point. Hot water can cause burns. Priority switching The unit is fitted with priority switching. When hot water is drawn off, the unit diverts all the DH flow to heat up the domestic water. If there is a power outage during tapping conditions or during a situation where there is no request for heat from the (connected) thermostat, the central heating valve will stay in closed position. This may lead to a decrease in temperature of the central heating installation/circuit. 8
General Plumbing Requirements When installing a completely new CH system in a new build property or a first time installation in an existing property, then the heating system must conform to current building regulations Part L1a. The appliance must be installed in accordance with, and comply to, the current: IEE Regulations, Building Regulations, Building Standards (Scotland) (Consolidation), Building Regulations (Northern Ireland), local water by-laws, Health & Safety Document 635 (The Electricity at Work Regulations 1989) and any other local requirements. British and Irish standards Where no specific instruction is given, reference should be made to the relevant British and/or Irish Standard codes of Practice. BS7074:1 EN12828 BS7593 ECTI Code of practice for domestic and hot water supply Central heating for domestic premises Treatment of water in domestic hot water central heating systems National rules for electrical installations Keep following conditions in mind during installation: The unit can only be used with closed heating systems up to a temperature of 900C. The unit must be stored and installed in a frost free area. The unit must not be exposed to direct sunlight. Ambient temperature must be between +50C and +400C. Humidity must be between 20% and 80%. Temperatures of components in the unit and connected to the unit can reach high temperatures. Contact may lead to burns. Fitting and modifications Fitting the appliance and any controls to the appliance may only be carried out by a competent engineer. Any misuse or unauthorised modifications to the appliance or associated components and systems could invalidate the guarantee and may lead to serious injury or even death. The manufacturer accepts no liability arising from any such actions, excluding statutory rights. 9
District heating CAUTION! Components, pipes and radiators in, and connected to, the unit may be hot. The heat interface unit is designed for usage with centralized heating systems up to 900C. The pipes and components in the set as well as the pipes and radiators in the central heating installation can reach these temperatures. Contact may lead to burns. Keep following conditions in mind during installation: Maximum pressure supplied by the district heating network is 10 bar. Maximum differential pressure supplied by the district heating network is 250 kpa. (450 kpa when differential pressure valve is fitted) Maximum supplied temperature by the distict heating network is 900C. Minimal supply temperature is setpoint DHW + 50C. Central heating Before the unit is commissioned, the central heating circuit must be fitted with a automatic by-pass valve to maintain a minimal flow rate over the HIU. The valve must be installed between the central heating supply and return, noting the direction of flow. Central heating ABV ABV = Automatic Bypass Valve For optimal energy efficiency and comfort, it is of the upmost important to hydraulically balance the CH system correctly. For the same purpose it is advised to design the CH system in such a way, that the CH return temperatures are as low as possible. Keep following condition in mind during installation: Artificially softened water must not be used to fill the central heating system 10
Domestic water The domestic hot water circulation pump is an available option within the unit. The circulation system, connected to the unit, must not contain any closable valves or obstructions to insure that a continuous flow will always be possible. Applying valves to the system can cause pump failure due to insufficient flow. DHW circulation circuit Keep following condition in mind during installation: Maximum pressure supplied by the domestic water circuit is 10 bar. All seals, joints and compounds (including flux and solder) and components used as part of the secondary domestic water system must be approved by WRAS. Servicing The end user should be advised to have the system serviced annually by a competent engineer. Contact your supplier for a list of approved engineers. Approved spares must be used to help maintain the economy, safety and reliability of the appliance. The service engineer must complete the Service Record after each service. 11
General Wiring Requirements These instructions apply in the UK and Ireland only and must be followed except for any statutory obligations Component specific electrical information may also be supplied in support of these instructions. FAILURE TO INSTALL APPLIANCES CORRECTLY COULD LEAD TO PROSECUTION. CAUTION! Isolate the mains supplies before starting any work and observe all relevant safety precautions. The unit uses electrical components (230VAC and 24VDC). These components must stay dry at all times. Touching these components can result in an electrical shock, burn, or electrocution. When the HIU is permanently connected to the 230VAC installation, a switch or circuit-breaker must be included in the installation as the means for disconnection. The switch of circuit-breaker must be suitably located next to the appliance and easily reached. The switch of circuit-breaker must be marked as the disconnecting device for the equipment. CAUTION! The unit s mains supply must always be connected to a residual current circuit breaker with overcurrent protection (RCBO) that combines the functionality of a RCD and MCB, breaking the circuit on either incorrect current of overcurrent. The circuit breaker must have a contact separation of at least 3mm in all poles and should isolate the appliance and all associated controls. The unit must, at all times, be connected to the protective earth of the installation. Danger of short circuit When connecting the cables ensure that no cable pieces fall inside the control panel. Unless otherwise stated, all Heat Interface Units should be connected to a mains 230V 50Hz Supply fused at 3 Amps. All electrical connections with the Heat Interface Unit control panel are clearly marked as follows: L = Live 230V N = Neutral E = Earth Any additional mains cable should comply fully with the current I.E.E. wiring regulations. It must have a minimum section of 1,5mm2 and be capable of withstanding a minimum of 900C. 12
Schematic 1 Spool piece L=110mm Electronical control unit 29 Service cable 30 Protective earth to Spool piece L=110mm 10 11 -vessel 13
Schematic legend Some components in within the unit are optional and therefore may not be included in each unit. 1 Strainer DH supply 2 Temperature sensor DH supply 3 Sensor pocket for heat meter 4 G1/8 connection DH supply 5 G1/8 connection DH return 6 Spool piece, differential pressure regulator or anti-fraude valve 7 Spool piece to be replaced by heat meter 8 Control valve DHW 9 Control valve CH 10 Heat exchanger DHW 11 Temperature sensor DH return for DHW 12 Heat exchanger CH 13 Temperature sensor DH return for CH 14 Pressure relief valve CH (3 Bar) 15 Temperature/pressure gauge CH return 16 Automatic air vent CH 17 Expansion vessel 18 Manual air vent CH 19 Water hammer arrestor 20 Temperature sensor DHW 21 Flow sensor DCW 22 Check valve DCW 23 Check valve DHW circulation 24 Circulation pump DHW 25 Circulation pump CH 26 Temperature/pressure sensor CH supply 27 Fill/drain valve 28 Strainer CH return 29 Electronics 24 VDC 30 Electronics 230 VAC 14
Installation Delivery range Additional items required 10, 24, 30 mm 230 V note: First fix bracket is sold seperately. Different types available. Example Connections 1 2 1 DH supply 2 DH return 3 CH supply 4 CH return 5 DHW Circulation (optional) 6 DHW 7 DCW 3 4 5 6 7 15
Pre-fix bracket positioning 5mm 175mm 10 mm Mounting to a plywood wall: Minimal plywood thickness must be 18 mm. Make sure that the back wall is at least 50 mm wider than the unit to ensure a proper support. Make sure the drill markings are aligned and leveled. Drill holes of Ø4 mm on the marked locations 40 mm deep. 4 holes are drilled for the fix rail unit and another 4 for the unit. Mount the fix rail firmly to the wall using the enclosed screws. Mounting to a concrete wall: Make sure the wall is robust and of good quality. Avoid hollow walls and make sure that the screws are not placed in the flushings of a brick wall. Drill holes of Ø10 mm on the marked locations 60 mm deep. 4 holes are drilled for the fix rail unit and another 4 for the unit. Mount the fix rail firmly to the wall using the enclosed screws and plugs. 15mm 318mm 12mm 25mm 465mm HIU 435mm 230mm 195mm (Up to flange of unit) 1024mm 49mm 200mm (Up to flange of unit) 30mm Preparation unit 1 1 2 3 2 3 16
Installation 30 mm 2x 3 4x 2 note: Make sure the valves on the fix rail bracket are in the closed position. note: Please use the enclosed screws and plugs to mount the unit. 1 5x note: only 4 lower connections when there is no circulation pump Connections 2x 30 mm 5x note: Sewer drain connection. Use a PVC pipe Ø32 mm and gooseneck drain or use a compression fitting Ø15 mm to connect the drain. note: only 4 lower connections when there is no circulation pump 17
Remove spool piece 1 30 mm 3 Option 1 2 Option 2 Note: Spool piece must be replaced with a heat meter or special spool piece for permanent use. Contact your supplier for more information. Install heat meter 24, 30 mm Option 1 connection size: M10 x 1 female note: The heat meter is installed in the DH return. The additional sensor is installed in DH supply. Option 2 connection size: 1/2 female 18
Filling the central heating The unit can be filled by connecting an external supply through the fill/drain valve in the unit. CAUTION! Please use caution when handling the unit. Parts and components may be hot or energized. Contact may lead to shock, burn or electrocution. 1. Disconnect the power to the unit. 2. Open all radiators in the residence. When thermostatic valves are installed, switch them to their maximum setting. 3. Remove the unit s casing. To remove the casing security please read chapter Secure casing. 4. Connect the filling hose to the filling/drain valve as shown below. 5. Slowly start filling the system by supplying water through the filling hose. Check for leakages during this procedure. 6. When the system is full, cut the filling supply to the unit. 7. Air vent the system through the unit and the radiators. See also chapter Air venting the unit. 8. Repeat steps 6 and 7 until all air is expelled and the system pressure is set to a nominal setting of 2 bar. 9. Continue to next chapter. CLOSE OPEN Pressure gauge 19
Air venting the unit To insure proper functioning of the unit, it must be vented from air first. Air venting of the unit is done at two positions in the unit: manually at position 1 and automatically at position 2. The system must also be air vented at the radiators. CAUTION! Please use caution when handling the unit. Parts and components may be hot or energized. Contact may lead to shock, burn or electrocution. 1. Disconnect the power to the unit 2. Air vent the unit manually at position 1 and the venting points at the radiators. 3. Start at the lowest venting position and work upwards ending at the highest position of the installation. 4. Air vent the system until all air is expelled from the installation. 5. Option for quick filling CH system (only at position 2): For quick filling of the CH system, turn the red cap of the automatic air vent counterclockwise. Set the red cap in the original position after filling. 2 OPEN 1 OPEN 20
Room thermostat The unit can (optionally) be connected to a room thermostat. For eligable types of thermostats see chapter Technical data. Connecting the room thermostat: 1. Remove the conductor. (only when a thermostat is used) 2. Connect the room thermostat cable, with an isolated conductor*, to the room thermostat. * sold separately 1 1 2 2 21
Commissioning Follow the steps shown below to commission the unit. If leakage or other faults should occur, go to chapter Troubleshoot. C D A 230 V B CAUTION! Parts and components may be hot or energized. Contact may lead to shock, burn or electrocution. G F E 1. Close all tapping valves in the residence. 2. Check all coupling nuts for leakage. (nuts may become loose during transport) 3. Make sure the electronics are securely mounted to the frame and avoid cables and pulse pipes from blocking the casing. 4. Make sure that the power supply is switched off. Connect the unit s power cables (A) to the power switch. Keep the power switch off, until further notice below. The power switch must be permanently connected, suitably located and easily reached. Also see chapter Installation requirements Blue cable: N (neutral) Brown cable: L (Live 230VAC) Green/yellow: PE (protective earth) 5. Slowly open the domestic hot water valve(s) to pressurize the unit and check for leakage. 6. Switch on the power to the unit. The LED should show a green blinking light (B). 7. Slowly open the DH supply valve (C) and check for leakage. 8. Slowly open the DH return valve (D) and check for leakage. 9. Slowly open the central heating supply valve (E). 10. Slowly open the central heating return valve (F). 11. Air vent the system (G). Start at the lowest point and work your way to the highest venting point. (see also chapter Air venting the unit ) 12. Check to see if the central heating warms up. 13. It is possible to modify the pump setting to optimise the pump operation to the characteristics of the CH system. See chapter Pump settings. 14. Slowly open a DHW valve in the residence. Check to see if the units LED shows a blue blinking light (B). Open the DHW valve completely when the system is fully vented. Leave it running for approximately 5 minutes. Check if the DHW temperature has reached its set point (default 550C) between 3 and 5 minutes. 15. Close the DHW valve in the residence. The LED will now show a green blinking light (B). 22
Secure casing To secure the unit, a metal security casing is fitted. The casing will obstruct from removing the EPP casing without damaging the seal. It also functions as a mount for the display of the heat meter. 1. Mount the display of the heat meter onto the metal security casing. 2. Move the metal security casing into position (1) and guide the heat meter cables through the casing. Make sure the cables are not obstructed or tangled. 3. Check to see if the metal security casing is alligned with the EPP casing (2). 4. Fix the metal security casing with the enclosed screw and seal. Make sure the order of assembly is as shown (3). 3 1 2 23
Service and inspection To ensure proper functioning of the unit, it is advised to periodically inspect the installation. Contact your heat distribution company about the possibilities for service and inspection. Maintenance and repairs must be performed by recognized personnel. Remove the power from the unit when performing maintenance and/or repairs. Close the supply and return valve of the heat distribution network. Close the supply and return valve of the unit. Check the unit for leaks. Check the strainers for dirt/pollution and clean if necessary. Check CH pressure is set to 2 bar. Check valves for dirt/pollution and clean if necessary. Check the unit for the delivery of hot tap water and central heating. The casing can be cleaned with a damp cloth. By no means use detergents of any kind. CAUTION! The unit uses electrical component (230VAC and 24VDC). These component must stay dry at all times. Please use caution when handling these energized components. Touching these energized components can result in an electrical shock, burn, or electrocution. Prolonged absence (holiday) Do not switch off the unit during long absence or holiday. To prevent frost damage within the unit or the distribution network, the radiator and shutoff valves must remain open. Radiators can be switched to the frost protection position (slightly opened) and/or the room thermostat lowered to a minimum of 100C. It is recommended to flush all water tapping points and showers for at least 2 minutes after a long period of absence. 24
Draining the CH system The unit is equiped with a fill/drain valve. This valve creates the possibility to fill and drain the CH system. The DH and DHW/DCW system cannot be drained from within the unit. Whenever the CH system needs to be drained, please follow the below steps. CAUTION! Please use caution when handeling the unit. Parts and components may be hot or energized. Contact may lead to shock, burn or electrocution. 1. Disconnect the power to the unit. 2. Open all radiator valves. When thermostat valves are fitted, switch them towards their maximum setting. 3. Close the district heating valves (A). 4. Close the CH valves (B). 4. Remove the unit s front casing (C). 5. Connect a hose to the fill/drain valve (D). 6. Drain the unit by opening the fill/drain valve (D). 7. Open the bleeding points in de unit (E). See also chapter Bleeding the unit. A E C E B D 25
Power supply The heat interface unit is equiped with an electric casing that converts the 230VAC power supply to 24 VDC and powers the equiped CH pump and optional DHW pump. It also houses the fuse of the unit. CAUTION! The unit uses electrical component (230VAC and 24VDC). Touching these components can result in an electrical shock, burn, or electrocution. The casing may only be opened by recognized personnel when the power supply is cut off. insulated 230 V 2 1 5 3 6 7 4 1. 230VAC fuse (3A) 2. 230VAC connection to circuit breaker or power switch 3. 230VAC DHW circulation pump connection 4. 230VAC CH pump connection 5. 24VDC connection to electronic regulator PCB 6. LED status indicator pump relais (ON = CH pump active) 7. LED status indicator 24V (ON = 24V directed to regulator PCB) 8. WAGO connector, connecting all protective earth cables 230 V Cable colours The electronics housing is seperated into a 230VAC area and a 24VDC area. By default the following cable colours are used: 8 CAUTION! 230VAC area - Live 230VAC Brown - Neutral Blue - Protective earth Green/Yellow 24VDC area - 24VDC Black - Ground Brown - Signal wire Grey 26
Pump settings The heat interface unit is fitted with one CH pump. The pump can be adjusted to fit the end-users situation. Adjustments to the pump settings should be done by recognized personnel only. Please use caution when adjusting the unit. Parts can be hot or energized. Contact with these parts may lead to shock, burn or electrocution. Wilo pump The Wilo pump is fitted with Red Knob technology. The knob opens the possibility to toggle between different settings. By default the pump is placed in the maximum setting with a constant differential pressure. 1. Selecting the setup type 2. Setting up the desired differential pressure (H) 3. Activating the pumps air venting function Air venting The pump will air vent itself at first startup. If the pump does not air vent itself, follow the steps below: 1. Switch to air venting mode 2. Air vent function will start after approximately 5 seconds and will take about 10 minutes to complete 3. When air venting is finished, switch the red knob back to the preferred setting Setting up regulatortype and discharge head H+ Differential pressure variable (Δp - v): 1. Select the variable differential pressure range 2. Turn the red knob to the preffered differential pressure (H) H- Differential pressure constant (Δp - c): 1. Select the constant differential pressure range 2. Turn the red knob to the preffered differential pressure (H) H+ H- 27
Grundfos pump The Grundfos pump has 3 control modes (proportional pressure, constant pressure and constant curve). Each control mode has 4 settings to choose from. The user interface has 1 push button, one red/green LED and 4 yellow LEDs. PROP. PRESS.: CURVE 1 PROP. PRESS.: CURVE 2 PROP. PRESS.: CURVE 3 PROP. PRESS.: AUTOADAPT SETTING OPTIONS CONST. PRESS.: CURVE 1 CONST. PRESS.: CURVE 2 CONST. PRESS.: CURVE 3 CONST. PRESS.: AUTOADAPT CONST. CURVE: CURVE 1 CONST. CURVE: CURVE 2 CONST. CURVE: CURVE 3 CONST. CURVE: CURVE 4 Default setting Push button Settings You can choose between the performance view and settings view. If you press the push button for 2 to 10 seconds, the user interface switches to setting selection if the user interface is unlocked. You can change the settings as they appear. The settings appear in a particular order in a closed loop. When you release the button, the user interface switches back to the performance view and the last setting is stored. Performance view While the pump is running, the first LED will show a green light. The following 4 LED s will indicate the power consumption as shown in the table below. Stand-by (only externally controlled) 0% Low performance 0-25% Medium low performance Medium high performance High performance 25-50% 50-75% 75-100% 25% 50% 100% 75% 28
DHW circulation pump (optional) The domestic hot water circulation pump is an available option within the unit. The pump is added to minimize delay in the delivery of domestic hot water at the draw off point in a closed DHW circulation circuit. It is generally used in systems where the domestic hot water needs to travel greater distances to its draw off point. Adjustments to the pump settings should be done by recognized personnel only. Please use caution when adjusting the unit. Parts can be hot or energized. Contact may lead to shock, burn or electrocution. Status indicator LED LED on (continuously): LED blinking short, long: LED blinking short (4x), long: LED blinking short (3x), long: LED blinking short (5x), long: LED On 200 msec., Off 200 msec., On 200 msec. LED On 50 msec., Off 50 msec., On 50 msec. Operation errors Normal operation (pump is running) Error due to low voltage Error due to pump speed feedback Error due to high temperature Pump rotor is blocked Air venting Stand-by LED indicator Problem Cause Solution Pump not running - Not connected or - Connect correctly connected correctly - Pump too hot, dry - Allow pump to cool down, pump operation- or overheating restarts automatically protection active - Pump blocked - Contact your supplier Pump is noisy - Not thoroughly air vented - Air vent the pump - Foreign objects in pump - Contact your supplier - Worn bearing - Replace pump min. Air venting the pump The pump has an air venting function that can be activated by turning the knob to position 7 for 5 seconds. Afterwards the desired position can be chosen. The procedure will take about 10 minutes. The procedure can be canceled by switching to position 3 and then back to position 7. Audible flow noises indicate that there is still air in the pump. Should this be the case the air venting procedure needs to be repeated. Pump settings The circulation pump has 7 settings to choose from to accomodate different situations, position 1 being the lowest and 7 the highest setting. max. 29
Differential pressure valve (optional) For DH systems with a differential pressure exceeding 250 kpa (with a maximum of 450 kpa), the option of a premounted adjustable differential pressure control valve is available. The optionally fitted differential pressure control valve has a control range of 20 to 60 kpa and has DN20 bore. For optimal functioning of the HIU, the adjustable differential pressure control valve is set at its maximum of 60 kpa (default setting). Adjustments to the pump settings should be done by recognized personnel only. Please use caution when adjusting the unit. Parts can be hot or energized. Contact may lead to shock, burn or electrocution. HEX 4 mm Lower differential pressure Higher differential pressure The valve is easily set by means of a 4 mm hexagonal key. The maximum setting of 60 kpa is reached by turning the hexagonal key clockwise. The number of turns needed to adjust the valve to its maximum setting depends on what the current setting is. The maximum number of turn is 20, running from its minimum to maximum setting. 30
Troubleshoot (end-user) LED indicator Green blinking: Blue blinking: Red blinking: White continuous: No LED: Normal condition Domestic hot water delivery condition Error Service mode (installer only) Unit is switched off What can you do? CAUTION! Always take in account the safety of yourself and others when performing a troubleshoot. In case of leakage 1. Close all valves connected to the unit. 2. Contact your heat distribution supplier. Central heating does not warm up 1. Check if the valves, connected to the unit, are open (levers are in the vertical position). If not, open the valves. 2. Check if the unit is connected to the power supply (CAUTION! 230V). 3. Check if the radiator valves are open. If not, open the radiator valves. 4. Turn your room thermostat up to a temperature that is higher than your current room temperature. 5. If problem persists, contact your heat distribution supplier. Tap water does not warm up 1. Check if the valves, connected to the unit, are open (levers are in the vertical position) and if the main domestic water valve is open. If not, open the valves. 2. Check if the unit is connected to the power supply (CAUTION! 230V). 3. If problem persists, contact your heat distribution supplier. No domestic hot water 1. Check if the main valve is open. If not, open the main valve. 2. If problem persists, contact your heat distribution supplier. WEEE Directive 2012/19/EU: Dispose product properly according to local legislation. 31
Troubleshoot (technician) Complaint LED indication light Cause Solution Leakage postscript: Close all valves on the fix rail and close the main water supply valve. Coupling nut shows leakage Coupling nut is loose Fasten coupling nut Gasket is missing Place gasket Temperature sensor shows leakage O ring is missing Replace temperature sensor O ring is damaged Replace temperature sensor The differential pressure pipe from Coupling is loose Fasten coupling the differential pressure regulator Differential pressure pipe is damaged Replace differential pressure pipe is leaking Other components or pipes are Component or pipe is damaged Replace component or pipe showing leakage Central heating does not warm up Radiator does not warm up LED does not light No power at power source Check power source Unit is not connected to power source Connect the unit to the power supply Power cables not properly connected to electronic Connect the power cables to the electronic regulator regulator Fuse is broken Check for any short-circuit problems and replace fuse (3A) Failure in the electronics Contact your supplier Blue flashing LED faucet is opened, unit is in tapping operation Close faucet Red flashing LED Sensor(s) are not connected or bad contact Check wire tree connections and connect the sensors properly, then restart electronics Sensor(s) defect Replace broken sensor and restart electronics Possibly faulty electronic cables or electronics Contact your supplier White flashing LED Unit is in service mode Remove USB cable Reset the unit by removing and then reconnecting the power supply No heating demand from the room thermostat Set the room thermostat to a higher temperature then the actual room temperature Radiator valves are closed Open radiator valves Valves in first fix rail are closed Open valves on first fix rail Thermostat cable not properly connected to room Make sure the room thermostat is connected thermostat properly Short circuit connector of the room thermostat is not connected or missing (when HIU is not Connect the wire ends of the room thermostat connection cable with a short circuit connector connected to room thermostat) Air in the central heating system Air vent the HIU and the central heating system Pressure in CH circuit is too low Set CH pressure to 2 bar. This might indicate a leakage in the CH system or a broken expansion vessel. Check CH system for any leakages and expansion vessel Pressure or temperature of the district heating system are not in accordance with specifications Check temperature and pressure of the district heating system The central heating pump is not active (LED on pump does not light up) Check if the pump cable is properly connected to the electronics The central heating pump is jammed or broken Contact your supplier Optional anti-fraude valve is closed Anti-fraude valve is not electrical connected or powered Anti-fraude valve is jammed or broken. Replace this component Optional differential pressure valve is poorly Adjust the differential pressure valve correctly adjusted Filters are clogged Check and clean filters CH heat exchanger is clogged Replace CH heat exchanger Cables of the control valves are mixed up Connect cables properly. Orange/red connector must be connected to the CH control valve Possibly defect in control valve Replace control valve Troubleshoot continues on next page 32
Troubleshoot (technician) Complaint LED indication light Cause Solution No tapping water No tapping water No water pressure Check/open main water supply valve Check flow restrictor for correct and proper placement Flow restrictor is clogged or jammed. Replace flow restrictor Flow sensor is clogged. Replace flow sensor DHW heat exchanger is clogged. Replace DHW heat exchanger Check valve is jammed. Replace check valve housing including the check valve Tapping water not at the right temperature Tapping water does not warm up LED does not light Unit is not connected to power source Connect the unit to the power supply up No power at power source Check power source Power cables not properly connect to electronic regulator Connect the power cables to the electronic regulator Fuse is broken Check for any short-circuit problems and replace fuse (3A) Failure in electronics Contact your supplier Green flashing LED Tapping threshold is to low, minimal 1 L/min. has not been reached Increase tapping to at least 2 L/min. by opening the faucet further Flow sensor is not installed correctly Check flow sensor, replace cable or replace flow sensor Red flashing LED Sensor(s) are not connected or bad contact Check wire tree connections and connect the sensors properly, then restart electronics Sensor(s) defect Replace broken sensor and restart electronics Possibly defect electronic cables or electronics Contact your supplier Supply and return valves are closed Open supply and return valves Pressure or temperature of the district heating system are not in accordance with specifications Check temperature and presure of the district heating system Filter is clogged Check and clean filter DHW heat exchanger is clogged Replace DHW heat exchanger Cables of the control valves are mixed up Connect cables properly. Green connector must be connected to the DHW control valve Possibly defect in control valve Replace control valve Option: Tapping water circulation circuit does not warm up LED does not light up Fuse is broken Check for any short-circuit problems and replace fuse (3A) Power supply cable of the optional DHW circulation pumpunit is not connected Connect the power supply cable of the optional DHW circulation pumpunit Optional DHW circulation pumpunit is broken or Replace DHW circulation pumpunit jammed Failure in electronics Contact your supplier Casing will not close properly Casing does not close properly Cables are in between unit and casing Keep cables free of any obstructions Metal flap closing the heat exchanger in position is Close metal flap closing the heat exchangers into not closed position Heat meter is obstructing the casings path Connect the heat meter properly Electronics are not properly placed Check mounting of electronics Other defects postscript: It is normal for the unit to generate a light noise during tapping or heating operation. The regulator valves can also make a light humming sound Rateling sound Red or green Flow sensor not installed correctly Install flow sensor properly flashing LED Other defects Contact your supplier 26-04-2016 Revision: A 33
EC declaration 1 EC DECLARATION OF CONFORMITY 2 DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EE DIRECTIVE 2006/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits 3 4 5 6 7 8 9 10 EC Declarati on of Conformity Number: EC268A Equipment or protecti ve system: Electronic heati ng system, Model: EcoAdvance Dual Plate Manufacturer: HSF B.V. Address: Marketing 23, Duiven, The Netherlands This equipment or protective system and any acceptable variation thereto is specified in the schedule to this declaration and the documents therein referred to. The examination and test results are recorded in Technical file no. 268A. Compliance with the Essential Requirements of the above specified directives has been assured by compliance with: EN 61010-1 : 2010 EN 55014-1 : 2006 + A1 : 2009 + A2 : 2011 EN 61000-6-2 : 2005 The marking of the equipment or protective system shall include the following: 11 12 The CE mark was first applied in: 2016 Duiven, April 1, 2016 HSF B.V. M. van de Veen Managing Director This Declaration may only be reproduced in its entirety and without any change 34