INSTALLATION AND OPERATING INSTRUCTIONS
Contents
1. If the heat pump was manually swit ched OFF and ON again after a power failure the compressor will only re start after approx 15 minutes when the pressure inside the refrigerant circuit has normalised again 1 4 2 Electrical supplementary heater You can accelerate the heating up process with the electrical supplementary heater if the DHW demand increases or if the WWK 300 has previously been switched OFF and you require hot water as quickly as possible For reasons of saving energy the electrical supplementary heater only heats the top third of the cylinder capacity approx 100 litres This takes approx 2 hours In SOL versions approx 50 litres are heated up due to the flange being positioned higher up on the cylinder The electrical supplementary heater is switched ON when the actual temperature falls below 58 C and is switched OFF when 65 C are exceeded Press the push button only once if you want to activate the electrical supplementary heater only to cover a peak demand 1 4 3 Boiler operation via heat exchanger only for SOL version A heat exchanger which is generally connected to a central heating system is integrated into the cylinder Subject to the heating water flow temperature the entire cylinder capacity should be heated up by the heat exchanger in between 3 and 4 hours 1 5 Operation outside the limits of use below 6 C to 4 C Subject to the relative humidity and the DHW temperature2. The time switch 4 is equipped with a week disk comprising 84 switching segments The shortest switching period is 2 hours long Segments pressed inwards towards the disk centre approx 2 mm lift are switched ON The DHW display sensor captures the DHW temperature inside the upper third of the cylinder approx 100 litres 1 8 Troubleshooting by the user 1 8 1 No hot water Should you fail to obtain hot water at any time you can take the following steps to remedy that situation No electrical power Check the fuse circuit breaker in your fuse box If it has blown tripped replace reset the fuse MCB Notify your local contractor if the MCB trips fuse blows again when you insert the mains plug into the socket again Still no hot water even though power is available Check whether the air inlet outlet is unobstructed The thermoswitch trips out or the high limit safety pressure limiter switches the compressor OFF if the compressor is overloaded due to excessive ambient temperature or excessive extract temperature gt 35 C or because of a fault in the refrigerant circuit Ask your local contractor to remove the relevant fault The thermoswitch automatically switches itself ON again The high limit safety pressure limiter must only be reset by your contrac tor after he has removed the cause of the relevant fault 1 8 2 Other faults Safety valve of the cold water supply line drips This m
3. ECO ON re OFF rb D Description in brackets see wiring diagram Fig 8 page 8 amp 55 2 S2 H1 g Abb 1 Function Main ON OFF Push button 2 Clock 4 programmed WWK 300 WWK 300 SOL switch 1 Only heat pump operation 25 C to 55 C ON Single reheating via the electrical heater rod to 65 C ON Programmed start of the electrical heater rod via the time switch ON Yes 1 7 2 Description of functions Switch 1 switches the entire heat pump ON I or OFF 0 Using push button 2 you can activate a single quick heat up of the cylinder via the electrical supplementary heater After the top third of the cylinder capacity has reached a DHW temperature of 65 C the electrical supplementary heater is switched OFF but is not automatically switched ON again Anindicator lamp is integrated into push button 2 which lights up when the electrical supplementary heater is switched ON Select the DHW temperature with the rotary selector 3 of the thermostat Fully clockwise approx 55 C ECO approx 40 C frost protect stage approx 25 C In position ECO the heat pump operates more efficiently than at the r h end stop You will need to establish the DHW temperature you require because a higher temperature would result in a larger volume of DHW at approx 40 C temperatures for baths and showers are generally around 40 C
4. as it is used in the same way This DHW heat pump is designed to extract energy from the air inside the equipment installation room or from a room to the ambient air of which it is connected via air ducts With that energy it heats domestic hot water DHW 1 3 Incorrect operation Never use greasy exhaust air S heat liquids other than potable water install the equipment a outside b in rooms at risk from frost c in rooms at risk from dust gases or vapours liable to explode operate the equipment with an empty cylinder operate the integral heat exchanger inside the equipment cylinder with liquids other than heating water 1 4 Description of functions 1 4 1 Heat pump operation This is the standard operating mode to which the limits of scope of the heat pump apply see specification To heat the cylinder content of approx 300 litres of water to 55 C the WWK 300 to EN 255 part 3 requires 9 SE EA 6 C 70 15 C 115h 3 3 15 C 70 15 C 9 0h 4 2 35 C 47 15 C 6 4h 5 2 Space H rel The water inside the cylinder will be heated to 55 C by the electrical supplementary heater which is controlled by the programmable time switch subject to the heating period being long enough This enables the option of making greater mixing water volumes available at certain times At all other times the water will be heated to the temperature selected on the controller see page 4 Fig 1 item 3
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6. the O ring against the pipe and secures the connector Releasing the connection Turn the screw cap back until a small gap appears Turn the retainer back by hand and hold it in position The pipe can now be pulled out again Gap between the screw cap and the casing released position 1 C 34 Se i E IC dH A approx 33 mm di STIEBEL ELTRON Guarantee For guarantees please refer to the respective terms and conditions of supply for your country The installation electrical connection and first operati on of this appliance should be carried out by a qualified installer The company does not accept liability for failure of any goods supplied which have not been installed and ope rated in accordance with the manufacturer s instructions Environment and recycling Please help us to protect the environment by disposing of the packaging in accordance with the national regulations for waste processing KYOTO R134a This device is filled with refrigerant R134a Refrigerant R134a is a CFC greenhouse gas mentioned in the Kyoto protocol with a global greenhouse potential GWP 1300 Never release refrigerant R134a to atmosphere 10 STIEBEL ELTRON amp Deutschland STIEBEL ELTRON GmbH amp Co KG D
7. 8 amp Commissioning Your local contractor must implement the commissioning Fill the cylinder to prevent damage to the compressor and radiators For filling open the water valve until water flows out Open the safety valve until water flows out free of bubbles Then close the safety valve Starting the WWK 300 Set switch 1 to ON Supplementary heater Press push button 2 the indicator lamp inside the push but ton lights up Set the temperature selector 3 Fully clockwise Set the time at clock 4 Inform the user that water may drip from the safety valve whilst the water is being heated up 5 Shutting the equipment down Puul the mains plug for reasons of frost protection and good hygi ene drain the cylinder if it is taken out of use for longer periods Fitting the plug in connector The plug in connectors are equipped with a retainer with stainless steel serrations and an O ring for sealing In addition they are designed with the Twist and secure function By simply turning the screw cap manually the pipe is secured in the connector and the O ring is pushed against the pipe to seal it Making the connection The fitting must be in its released state before inserting the pipe In this position there is a small gap between the screw cap and fitting body Push the pipe past the O ring until it bottoms out inside the connector Tighten the screw cap unit it meets the casing This presses
8. inside the cylinder the evaporator begins to ice up below a room temperature of 6 C When the evaporator is covered in hoarfrost the frost stat N2 see wiring diagram shuts down the compressor whilst the fan continues to operate thereby defrosting the compressor The compressor starts again automatically after the defrosting process has been completed and the heat pump operation continues The minimum temperature required for the heat pump operation is 4 C The evaporator is defrosted upon demand at operating temperatures between 4 and 6 C This increases the heat up time Room temperature higher than 35 C The heat pump will be switched OFF by safety equipment at room temperatures above approx 35 C The heat pump will be re started automatically after a brief cooling down period The heat pump will be switched OFF again if the room temperature is still higher than 35 C Take appropriate steps to prevent the ambient temperature rising above 35 C 1 6 Maintenance and cleaning The WWK 300 is largely maintenance free Maintenance must only be carried out by qualified contractors Have the protective anode checked regularly Your contractor who will be familiar with your local water quality will advise you of the optimum timing for such maintenance The first inspection of the protective anode is due after two years 1 7 Operation 1 7 1 Overview of the user interface 3 N1 1 S1
9. 01 0315 Fig 5 STIEBEL ELTRON We recommend the following combinations when using metal pipework for the installation 3 4 Connection examples Reheat with solar collector 13 A LE 1 DHW line 14 11 Copper pipe Copper pipe regulations Cold water line Steel pipe Steel or copper pipe Insulate the DHW line in accordance with local Please adhere to the order of fittings on the i cold water side precisely see Fig 5 Prior to 1 installation Flush out the line T Po Install the safety valve into the cold water line ooh 4 The expansion water must be able to be seen to drip into a basin or funnel The diameter of i DHW the connecting pipe must not be larger than 8 713 i the safety valve diameter X n i o Size the drain so that water can drain off even ENS if the safety valve has been fully opened The 1 outlet must not be able to be blocked closed off The safety valve must open at 6 bar 10 Install a drain valve at the lowest point of the cold water supply line 2 2 Install a pressure reduction valve when the water pressure is higher than 5 bar Special measures are required at water pressure above 10 bar see Fig 5 Condensate drain The condensate from the WWK 300 is channelled to a drain via a hose 1 2 dia Where necessary install a condensate pump for part no see page 3 Connecting a circulation line t
10. INSTALLATION AND OPERATING INSTRUCTIONS DOMESTIC HOT WATER HEAT PUMP WWK 300 WWK 300 SOL ch STIEBEL ELTRON Index Page Specification 2 Operating instructions for users 1 Operation and control 3 1 1 Equipment description 3 1 2 Correct operation 3 1 3 Incorrect operation 3 1 4 Description of functions 3 1 5 Operation outside the scope of applications 3 1 6 Maintenance and cleaning 3 1 7 Operation and control amp 1 8 Troubleshooting by users amp Installation instructions for contractors 2 Safety equipment and maintenance 5 2 1 Onthe equipment 5 2 2 Onthe system 5 3 Installation 6 3 1 Transport 6 3 2 Positioning 6 3 3 Water connection 6 3 4 Boiler connection 7 3 5 Electrical connection 8 4 Commissioning 9 5 Shutting the equipment down 9 Guarantee 10 Environment and recycling 10 Information for owners Keep these operating instructions safely and pass them on to any new user should the equipment change hands Let your contractor check their content in conjunction with any maintenance or repair work Positioning installation and commissioning must be carried out by trained contractors in accordance with these operating and installation instructions The manufacturer s warranty only applies if the WWK 300 is installed connected and operated in accordance with these operating and installation instructions In conjunction with the pos
11. Mixing valve unit 8 Expansion vessel 18 Solar control unit 9 Shut off valve 19 Boiler control unit 10 Fill amp drain valve Fig 6 3 5 Electrical connection The WWK 300 is supplied fully wired 230 V 50 Hz socket is required Line fuse rating 16 A gL A cable grommet is provided at the back of the heat pump to enable control equipment to be connected temperature sensor Before plugging in the mains plug set switch 1 Fig 1 OFF 0 N Fill the cylinder with water Control panel WWK 300 WWK 300 SOL oN7 S9Z860WUN2Z8sFS39 E C26 03 01 0011 xi 24 K1 N2 N3 g Fig 7 Wiring diagram WWK 300 WWK 300 SOL E1 Electric heater rod j i F1 High limit safety cut out x1 NT Lil PE F3 Pressure limiter z j F4 Protective motor switch Klixon d H1 Indicator lamp electric heater S2 95 C 016 21 11 F1 ET K1 Relay Se me M1 Compressor N L PE M2 Fan N1 Heat pump controller 4B 1A N2 Hoarfrost temperature monitor 51 ae SA Ka ES N3 65 C limiter 51 Main ON OFF switch S2 Push button E heater rod 1x 5 5 6 S5 Week time switch Mains supply sii 4 Capacitor N1 7T E 4B 91 N sc ii OA 2 Tose lt 9 9 o F3 65 C 160 C 1 94 N3 24 20 46 43 10 A 3A K1 d HES M1 M2 A B 6B F4 15 8 15 8 D 8 Fig
12. Transport room must be at least 6 m2 Never install y To protect the equipment against damage this equipment in rooms with a volume of it must be transported vertically inside less than 13 m3 roms its dedicated packaging Where space is Never restrict the ambience around the ei restricted you may also move the equipment WWK 300 through walls or ceilings closer tipped backwards at an angle than shown in Fig 4 Theroom temperature must never fall S 2 3 2 Positioning below 6 C as the ambient temperature A 1 Unscrew the four screws from the non will be reduced by approx 1 3 C through returnable pallet the heat pump operation The initial 2 Remove the washers temperature level will be re established 3 Before removing the equipment from approx 1 2 hour after the heat pump has the pallet remove the anti vibration been switched OFF 2 mounts from the pack supplied with ri the equipment and insert fully into the When installing the heat pump in a boiler equipment room ensure that the boiler will not be i 4 Remove the equipment from its pallet impaired and position it where required A 5 Level the equipment by manipulating the 3 3 DHW connection anti vibration mounts Observe the regulations imposed by your local a water board Install the cold water supply line x Checking installation conditions in accordance with Fig 5 Air Air The room where the WWK 300 is be installed must meet the following condit
13. ay occur during the heat up phase and is completely normal Condensate drain drips This always happens when the surface temperature of the evaporator is lower than the ambient dew point temperature For all other faults consult your contractor DHW heating can be maintained in most fault conditions by switching the electrical supplementary heater ON Installation instructions for contractors STIEBEL ELTRON 2 Safety equipment and maintenance Pull the mains plug out its socket before commencing any work on the equipment For operation with a second heat source e g a solar thermal system the maximum cylinder temperature must not exceed 65 C This must be ensured with an external control unit 2 1 On the equipment In case of a fault the safety equipment of the WWK 300 interrupts the relevant power circuit Such faults can for example be cau sed by a faulty DHW priority setting on a connected boiler High limit safety cut out STB This will shut the equipment down if the DHW temperature exceeds 95 C Reset the high limit safety cut out by pressing the reset button item 2 Fig 3 after the cause of the fault has been removed For this open the equipment as shown in Fig 2a Safety high pressure limiter SDBK The safety high pressure limiter shuts down the compressor if the pressure inside the refrigerant circuit exceeds the permissble maximum value The safety high pressure limiter may also re
14. cable is correctly connected Cleaning the evaporator Maintaining the full output of the WWK 300 requires an occasional professional cleaning of the evaporator Your contractor will determine the timing for this operation 2 2 On the system Safety valve on site provision This valve opens when the water pressure exceeds the preset value of 6 bar thereby l T T FO 6 8 relieving the pressure It is adjusted so that no water will be expelled when heating is switched OFF Should it continue to drip excessively either the valve seat has become contaminated the water pressure is too high or the pressure reducing valve has become faulty Pressure reducing valve on site provision Check the valve for perfect function Replace it if necessary Regular valve maintenance Safety requires that valves are regularly checked for perfect function How quickly limescale builds up depends on the local water quality As your local contractor is familiar with your local water quality let him determine the timing of this check 26_03_01_0313 Abb 2a 26_03_01_0315 26_03_01_0009 Abb 3 Positioning 3 Installation The available floor area in the installation 3 1
15. commission your WWK Nevertheless you should familiarise yourself with the most important aspects of this equipment 1 1 Equipment description The WWK 300 contains two heat sources within the cylinder both heat the water to the required temperature Heat pump Electrical supplementary heater The WWK 300 with suffix SOL not only contains a heat pump and an electrical supplementary heater but also a heat exchanger permanently fitted inside the cylinder which can be supplied with energy from a boiler or solar heating system The WWK 300 extracts energy from the air which can be utilised to heat the water contained inside the cylinder This energy extraction leads to a cooling of the installation room by approx 1 3 C The WWK can also be operated with a connection to an air duct However such air channels must not be smaller than 200 mm their length should not exceed a maximum of approx 4 m The WWK 300 also extracts moisture from the air which turns into condensate and must be drained off A hose connection is provided for that purpose Additionally Order No Description PK 10 229286 Condensate pump Air channel 071448 For connection to adaptor air hoses chan nels 200 mm dia circular 1 2 Correct operation The appliance is intended for domestic use i e it can be used safely by untrained persons The appliance can also be used in a non domestic environment e g in a small business as long
16. ions To facilitate an easy connection to the water Mir 400 660 Miri 400 Stable floor WWK 300 wet weight approx system the equipment will be supplied in a Dimensions in mm 460 kg separate pack with angled plug in fittings Never operate the WWK 300 in rooms at pipe connectors with union nuts and flat Fig 4 risk from explosion due to dust gases or Ge E vapours itting the plug in connector see page 9 Include in your considerations the R utilisation of waste heat for example 10 NES against the risk of cor from a boiler tumble drier or refrigerator SE make the connection as flat freezer packing seal The use of hemp on connecti ons is not acceptable Connection dimensions ie MEN Cold water supply 0 22 mm 2 DHW connection 22 mm 3 3 Condensate drain 1 2 15 pL hose connection T 4 Circulation connection G 1 2 2 9 5 1 nipple for collector or i iwi o SES J boiler sensor 6 Heating water flow 0 22 mm i 4 o e J 7 Heating water return 22 mm 8 Drain valve Sch 9 Safety valve e 12 16 10 Straight through shut off valve 3 3 D 6 M 11 Test port for pressure gauge ER o 12 Non return valve a 13 Test valve 14 Pressure reducing valve only EI a S A in case of gt 4 8 bar pressure d gt LG 15 Electrical cable grommet 2 gj A b cd ol DI La P n 16 DHW circulation pump IS EAM re 1 5 8 10 11 12 13 14 10 Dimensions in mm i M 1 Ww 1 L C26 03
17. itioning installation observe all local national standards and requirements as well as the stipulations by your local water board and energy supply company Risk of injury Where children or persons with limited physical sensory or mental capa bilities are to be allowed to control this appliance ensure that this will only happen under supervision or after appropriate in structions by a person responsible for their safety Children should be supervised to ensure that they do not play with the appliance WWK 300 WWK 300 SOL 074361 074362 Outputs Heating output L15 F70 W55 kW 1 6 1 6 Power consumptions Power consumption booster heater kW 1 5 1 5 Power consumption L15 F70 W55 kW 0 5 0 5 Coefficients of performance Coefficient of performance L15 F70 W55 4 2 4 2 Sound data Sound pressure level at 1 m distance in a free field dB A 45 45 Sound power level EN 12102 dB A 60 60 Application limits Min installation room floor area m 6 6 Min installation room volume m3 13 13 Hydraulic data Max DHW temperature SE 65 65 HP DHW temperature SE 55 55 Cylinder capacity 303 284 Permissible operating pressure DHW MPa 0 6 0 6 Surface indirect coil m 1 3 Energy data Standby energy consumption 24 h kWh 0 74 0 85 Electrical details Fuses A C16 C16 Rated voltage V 230 230 Phases 1 N PE 1 N PE Frequency Hz 50 50 Power co
18. nsumption W 440 440 Max power Consumption W 1940 1940 Rated current mA Versions IP Rating IP21 IP21 Refrigerant R134a R134a Dimensions Height mm 1792 1792 Width mm 660 660 Depth mm 690 690 Height of unit when tilted mm 1920 1920 Height when tilted incl packaging mm 2050 2060 Weights Weight dry kg 157 180 Weight wet kg 460 464 Connections Condensate drain mm 20 20 Heat exchanger connection G1 DHW circulation connection G 1 2 male G 1 2 male Water connection 22 mm 22 mm Values Lower air temperature limit SE 6 6 Upper air temperature limit 9C 35 35 Air flow rate m3 h 550 550 Refrigerant capacity kg 0 850 0 850 The specifications apply to appliances without an air duct connection As long as the air flow rate is not reduced by more than 10 the heat up time will not increase In the case of an air supply via an air duct the required air flow rate is assured if the connected air duct with a diameter of 200 mm is not longer than 4 m Only connect the air duct to the air inlet side of the appliance Prevent additional pressure drops caused by diverters or the installation of grilles and filters Operating instructions for users and contractors STIEBEL ELTRON 1 Operation and control The WWK 300 domestic hot water DHW heat pump from STIEBEL ELTRON is an automatic DHW heater offering a capacity of approx 300 The required DHW temperature can be preselected Your local contractor will install connect and
19. o the cylinder The heat losses incurred in the circulation line and the electrical power consumption of the circulation pump reduce the efficiency of the system The cooled down water in the circulation line mixes with the cylinder content Where possible avoid installing a circulation line Where that is not possible control the circulation pump thermally or by a time switch 3 4 Boiler connection WWK 300 SOL Pipe bends with union nuts are supplied with equipment which has heat exchangers installed to enable easy connection to a boiler Such connection is only permitted with boilers providing DHW priority and in conjunction Reheat with boiler 15 Cold water safety assembly DHW Cold water safety assembly C26 03 01 0016 C26 03 01 0010 with an electronic temperature sensor 1 DHW heat pump 11 Solar collector operating with low voltage capturing the 2 DHW cylinder probe 12 Boiler cylinder temperature of the heat pump 3 Solar circulation pump 13 Airvent valve 4 Safety valve 14 Collector sensor The sensor well is located on the front of the 5 Non return valve 15 Outside temperature sensor heat pump behind the lower door The DHW 6 Central heating circulation pump 16 Mixer valve probe temperature is adjusted at the boiler control 7 Mixer circuit circulation pump 17
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21. spond if the WWK 300 is operated above its permissible limit gt 35 C exhaust temperature Reset the safety high pressure limiter by pressing the reset button item 1 Fig 3 after the cause of the fault has been removed For this open the equipment as shown in Fig 2a Protective motor switch The protective motor switch will shut down the compressor if it is overloaded because of excessive thermal load Remove the relevant fault After a short while the protective motor switch will restart the compressor automatically Protective anode A protective anode is integrated into the DHW cylinder to protect it against corrosion The protective anode is pushed through the flange from inside out and secured For inspections the flange will be removed to enable the simultaneous inspection of the electrode the heater rod and the internal enamel coating When replacing the anode ensure a perfect contact with a metallic conductive surface during assembly The timing of the inspection is subject to the local water quality and is determined by your local contractor Stiebel Eltron recommends that the first inspection takes place no later than after two years The protective anode is located behind the front fascia When removing the fascia please note that the earth strap to the fascia is not pulled off Fig 2b If required remove the strap from the push on connector When replacing the front facia en sure that the earth
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