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Troubleshooting
Related Manuals for STIEBEL ELTRON WWK 304 ZA
Summary of Contents for STIEBEL ELTRON WWK 304 ZA
- Page 1 OPERATION AND INSTALLATION DHW heat pump » WWK 304 ZA...
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Page 2: Table Of Contents
CONTENTS SPECIAL INFORMATION 14.3 Resetting the high limit safety cut-out ��������������������� 28 14.4 Motor overload relay ������������������������������������������� 28 OPERATION Maintenance ������������������������������������������������ 28 General information �����������������������������������������4 15.1 Removing the appliance cover ������������������������������� 28 Safety instructions ����������������������������������������������� 4 15.2 Removing the casing ring ������������������������������������� 29 Other symbols in this documentation �����������������������... -
Page 3: Special Information
SpeciAl informAtion SpeciAl informAtion - A T&P valve and a cold water expansion con- trol valve must be installed. Observe all appli- cable national and regional regulations and instructions. - The appliance may be used by children over 8 years of age and persons with reduced phys- - A pressure reducing valve must be installed. -
Page 4: Safety Instructions
operAtion General information operAtion f This symbol indicates that you have to do something. The ac- tion you need to take is described step by step. These symbols show you the software menu level (in this example level 3). General information Units of measurement The chapters "Special information"... -
Page 5: Test Symbols
operAtion Safety WARNING Burns Material losses Touching hot components can lead to burns. Never cover the appliance. Covering the air intake or air f When working on hot components, always wear discharge leads to a reduced air supply. If the air supply protective working clothing and safety gloves. -
Page 6: Heat Pump Operating Principle ������������������������������� 6 15.10 Protective Anode And Battery Change
operAtion Appliance description Appliance description DHW heating This appliance enables DHW to be supplied efficiently to several draw-off points using renewable energy. The appliance extracts heat from the ambient air. This heat is used, along with additional electrical energy, to heat up the water in the DHW cylinder. The amount of electrical energy and time required to heat up the DHW depend on the temperature of the air drawn in and the tempera- ture of the water in the cylinder. -
Page 7: Appliance Operation Outside The Application Limits
operAtion Appliance description Appliance operation outside the application Minimum runtime and minimum pause time limits Material losses f To guarantee fault-free operation of the appliance, make sure When operating with external switching devices that you operate the appliance within its application limits (see can interrupt the power supply to the appliance, such chapter "Specification / Data table"). -
Page 8: Display And Operating Controls ������������������������������� 8 16.7 Standardised Output Data
operAtion Settings The appliance has a second set temperature preselected at the Two detents are provided so that you do not have to keep hold factory. This is activated when there is an external switching sig- of the lid. nal. Set temperature 2 takes priority over the standard set tem- To close, carefully press the lid onto the appliance until the locking perature while there is an external switching signal. -
Page 9: Adjusting The Settings
operAtion Settings Adjusting the settings 4.3.1 Symbols The default display shows the mixed water volume. Symbol Description Mixed water volume: The currently available mixed water volume at The "Menu" button allows you to call up 40 °C and at 15 °C cold water temperature is shown. Set temperature adjustment: Subject to intake temperature and all information and adjustment options in hot gas temperature, the appliance may temporarily reduce the set... - Page 10 For hygiene and other reasons, only change this value if cate a separate, individual set DHW temperature to a connected instructed by Stiebel Eltron representative.. external signal transmitter, such as a PV system or an economy tariff transmitter. This set temperature 2 is activated if the termi- nal connected to the external signal transmitter receives a signal Set temperature 1 is the DHW temperature to which the appliance...
- Page 11 Note the electric emergency/booster heater. Only use the runtime-dependent quick heat-up if instruct- ed by a Stiebel Eltron representative. Enabling this function is likely to impact the efficiency of thE0 the product and may lead to unnecessary higher energy consumption and operational costs.
- Page 12 operAtion Settings "Rapid heat-up" button Charge level Increasing this value increases the minimum available amount of Note DHW. The effect corresponds to a virtual shift of the temperature In appliances with no electric emergency/booster heater, sensor downwards. This results in a faster recovery at the expense this button only allows you to clear the high pressure/low of higher energy consumption and reduced efficiency.
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Page 13: Cleaning, Care And Maintenance
operAtion cleaning, care and maintenance Cleaning, care and maintenance Press the "Rapid heat-up" button for two seconds. WARNING Electrocution The "Electrical emergency/booster heat- - Only clean the exterior of the appliance. er" symbol appears. The "Service/fault" - Never open the appliance. symbol flashes. - Do not insert objects through the grille into the in- terior of the appliance. -
Page 14: Troubleshooting
operAtion troubleshooting Troubleshooting problem cause remedy The “Electric A temperature controller has No action required. The appli- emergency/ switched off the electric emer- ance continues the rapid heat-up problem cause remedy booster heat- gency/booster heater during process using the heat pump. No hot water No power at the appliance. - Page 15 operAtion troubleshooting E fault code fault description remedy fault description remedy Flashing The appliance has ascertained that You can temporarily the DHW cylinder has not been heat- continue to use the Flashing The temperature sensor on the Notify a qualified contractor. ed within the maximum temperature appliance by pressing air inlet is faulty.
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Page 16: Installation
inStAllAtion Safety inStAllAtion Incorrect use The following are not permitted: - Operating the appliance when the casing is open - Filling the appliance with a refrigerant other than the one Safety detailed in chapter "Specification / Data table" - Heating liquids other than potable water Only a qualified contractor should carry out installation, commis- sioning, maintenance and repair of the appliance. -
Page 17: Storage
inStAllAtion preparation - The application limits for the heat pump and DHW cylinder Material losses must be maintained (see chapter "Specification / Data table"). If transported horizontally, the appliance must always be - The substrate of the installation site must be level and have laid on the shaded side of the box. -
Page 18: Siting The Appliance
inStAllAtion preparation Note The appliance output data is calculated according to the relevant standards, using the intake temperature speci- fied in the data table. Below this temperature the appli- ance efficiency and output decrease. The heat-up time is extended. Note You can improve the efficiency of the appliance by utilis- ing the waste heat from other appliances to heat the DHW cylinder, e.g. -
Page 19: Installation
inStAllAtion installation 9.4.1 Minimum clearances DHW line f Maintain the minimum clearances. Stainless steel, copper and plastic pipework are approved. Material losses When using plastic pipework, observe the manufacturer's data and chapter "Specification / Fault conditions". f Thoroughly flush the pipework before connecting the appli- ance. -
Page 20: Condensate Drain
inStAllAtion installation Safety valve (cold water expansion control valve) f Use a suitable condensate pump if there is insufficient fall. Take the building characteristics into account. f Install a safety valve (expansion control valve) in the cold water supply line. Condensate pan heater The safety valve protects the appliance against unacceptable ex- cess pressure. - Page 21 inStAllAtion installation Replacing the batteries can be avoided by connecting the im- Material losses pressed current anode separately to a continuous power supply. Install a residual current device (RCD). This means the DHW cylinder continues to be protected against corrosion if the rest of the appliance is switched off, e.g. by a controlled power supply.
- Page 22 inStAllAtion installation 10.3.3 Connection with external signal transmitter f Prepare the cables in such a way that each cable terminates with a wire ferrule. Note f Push the cables through one of the cable entries in the appli- The appliance has a second, higher set temperature ance casing.
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Page 23: Assembling The Appliance
inStAllAtion commissioning 11.1.1 Filling the DHW cylinder Fill the DHW cylinder and vent the pipework by following the GNYE procedure below: f Close the drain valve. f Open all DHW draw-off points and the shut-off valve in the cold water supply. f Close the DHW draw-off points as soon as water comes out of them. -
Page 24: Service Menu
To confirm the code after entering all Service menu settings shall only be accessed with prior digits, press the "Rapid heat-up" but- approval from Stiebel Eltron. ton. To unlock the service menu, you need to connect a service plug ... - Page 25 inStAllAtion Settings Set the cylinder volume Number of times hot gas temperature sensor was triggered The cylinder size is required for accurate calculation of the mixed water volume. You can switch the cylinder size between 200 and The counter indicates how often the hot gas temperature has ex- 300 l using the "Plus"...
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Page 26: Appliance Shutdown
inStAllAtion Appliance shutdown Hot gas temperature switching value Set value limit If set value limiting is active, the lower end of the setting range Material losses for the set value is limited to 61 °C. If set value limiting is inactive, Factory default setting: 105 °C the set value can be adjusted to any value within the applicable Only a service technician is permitted to change his pa-... -
Page 27: Fault Codes
inStAllAtion troubleshooting fault description remedy Note Following an interruption to the power supply, compres- Flash- The cylinder top sensor and Check that the plug is seated cor- sor operation remains blocked for at least one minute the integral sensor are faulty. rectly. -
Page 28: Resetting The Safety Pressure Limiter
inStAllAtion maintenance 14.3 Resetting the high limit safety cut-out fault description remedy If the DHW cylinder is overheated, the high limit safety cut-out E 4 Con- The hot gas temperature Check that the plug is seated cor- switches off the electric emergency/booster heater to protect the tinu- sensor is faulty. -
Page 29: Removing The Casing Ring
inStAllAtion maintenance f Carefully remove the cover. f A cable connects the operating controls to the appliance PCB. The casing ring overlaps along the joint. A tab on one end clips If necessary, disconnect the plug at the back of the program- into the recess at the other end of the casing ring. -
Page 30: Descaling The Electric Emergency/Booster Heater
inStAllAtion maintenance 15.5 Descaling the electric emergency/booster 15.8 Replacing the power cable heater WARNING Electrocution Only descale the flange of the emergency/booster heater after The power cable must only be replaced (for example if disassembly. Never treat the inside of the DHW cylinder or the damaged) by a qualified contractor. -
Page 31: Fitting The Appliance Cover
inStAllAtion maintenance f Push the battery compartment into the retainer. f Reconnect it to the appliance with the plug-in connection. 15.11 Fitting the appliance cover WARNING Electrocution f Reconnect the earth cable to the appliance cover. f Place the cover back on the appliance. f Press the cover into the bead around the casing ring. -
Page 32: Specification
inStAllAtion Specification 16. Specification 16.1 Dimensions and connections WWK 304 ZA Entry electrical cables Cold water inlet Male thread DHW outlet Male thread T&P valve Female thread Rp 3/4 Condensate drain Male thread G 3/4 Air intake Air discharge Cover for manufacturing aperture 32 ... -
Page 33: Hydraulic Diagram
inStAllAtion Specification 16.2 Hydraulic diagram Hot water Cold water 12 13 1 Cold water supply Cold water supply Expansion control valve 2 Hot water connection Hot water connection Drain 3 Connection for T&P safety valve Connection for T&P safety valve Drip tray (only for indoor installation) 4 Condensate drain 5 Vacuum breaker... -
Page 34: Wiring Diagram
inStAllAtion Specification 16.3 Wiring diagram F 100 mA / 250 V 4,8 V coat GNYE N´ L´ housing A3 storage tank storage tank active defrost / active anode 34 | WWK 304 ZA www.stiebel-eltron.com... -
Page 35: Fault Conditions
inStAllAtion Specification Electronic assembly (control unit) Thermostat TSR Resistor Electronic assembly (programming unit) DIP switch (operating mode) Electronic assembly (electrical corrosion protection) DIP switch Capacitor Temperature sensor cylinder top/int. Battery pack Temperature sensor, hot gas Heating element Temperature sensor, air intake High limit safety cut-out TSR Temperature sensor, evaporator Motor overload relay M1... -
Page 36: Data Table
inStAllAtion Specification 16.5 Data table WWK 304 ZA 203871 Hydraulic data Nominal capacity Application limits DHW temperature with heat pump °C Max. DHW temperature with heat pump °C Max. DHW temperature with emergency/booster heater °C High limit safety cut-out °C Min./max. application limits of heat source for heat pump operation °C -5/+42 Min./max. -
Page 37: Environment And Recycling
inStAllAtion | GUArAntee | enVironment AnD recYclinG Specification Further details WWK 304 ZA 203871 Maximum altitude for installation 2000 16.6 Appliance parameters WWK 304 ZA Reduced start hysteresis Maximum temperature increase time Maximum defrost time Defrost end temperature °C Minimum evaporator temperature °C Recurring pressure fault Pressure fault evaluation time Compressor lockout time Set rapid heat-up temperature °C... - Page 38 Commercial purposes means that the unit is used for a non-domestic purpose Warranty for Heat Pumps – Model WWK 304 ZA and includes but not limited to being used in a motel, hotel, mining camp or nursing home.
- Page 39 WARRANTY | ENVIRONMENT AND RECYCLING Warranty exclusions We may charge you: We may reject your warranty claim if: 13.1. for any additional transport costs if the unit is installed more than 30 kilometres from our closest authorised ser- 12.1. The unit was not installed by a registered and qualified vice technician.
- Page 40 Hungary South Africa STIEBEL ELTRON Australia Pty. Ltd. STIEBEL ELTRON Kft. STIEBEL ELTRON Southern Africa (PT Y) Ltd 294 Salmon Street | Port Melbourne VIC 3207 Gyár u. 2 | 2040 Budaörs 30 Archimedes Road Tel. 03 9645-1833 | Fax 03 9644-5091 Tel.
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does it come with tp valve and drain **** fitted