INSTALLATION AND OPERATING INSTRUCTIONS
Contents
1. Fig 7 Wiring diagram WWK 300 WWK 300 SOL E1 Electric heater rod F1 High limit safety cut out x1 N L1 PE 1 N PE AC 50Hz 230V F3 Pressure limiter F4 Protective motor switch Klixon 21 11 H1 Indicator lamp electric heater S2 1 9 SY K1 Relay 12 M1 Compressor N L PE M2 Fan N1 Heat pump controller 2 5 N2 Hoarfrost temperature monitor 51 N3 65 C limiter 1 4 S1 Main ON OFF switch S2 Push button E heater rod 1x 5 5 6 S5 Week time switch Mains supply Capacitor 9 gt 55 1 1 1 03 Ki CDA 52 i 2 PT e 2 Tele 3 Lodo 9 9 9 20 4 bar zk 65 C 60 1 2 35 L7 21 13 14 10 S A RIP A 3 K1 di H1 G9 M1 M2 m B F4 5 15 8 15 8 87 8 z Fig 8 4 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 Setthe temperature selector 3 Fully clockwise Setthe time at clock 4 Inform the user that water may drip from the2. Cold water safety assembly C26 03 01 0016 15 i i f 1 i 16 d E DTI i DHW 1 is i us D E a 5 5 1 ut 2 p o Ma 6 i 7 pu oa i9 XoX 1 SCh ei 4 17 La 12 E E 3 8 Weg 2g T o m 5 pod 10 Cold water safety assembly 1 DHW heat pump 11 Solar collector 2 DHW cylinder probe 12 Boiler 3 Solar circulation pump 13 Air vent valve 4 Safety valve 14 Collector sensor 5 Non return valve 15 Outside temperature sensor 6 Central heating circulation pump 16 Mixer valve probe 7 Mixer circuit circulation pump 17 Mixing valve 8 Expansion vessel 18 Solar control unit 9 Shut off valve 19 Boiler control unit 10 Fill amp drain valve Fig 6 temperature is adjusted at the boiler control unit 3 5 Electrical connection The WWK 300 is supplied fully wired A 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 AN Fill the cylinder with water Control panel WWK 300 WWK 300 SOL C26 03 01 0017 eu7sSsS9Z24860Ha8se
3. 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 D dal Where necessary install a condensate pump for part no see page 2 Connecting a circulation line to 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 with an electronic temperature sensor operating with low voltage capturing the cylinder temperature of the heat pump The sensor well is located on the front of the heat pump behind the lower door The DHW 3 4 Connection examples STIEBEL ELTRON Reheat with solar collector 4 18 wa 11 Sp 13 A etx Reheat with boiler
4. 5 142 nipple for collector or 2 w i U o J oiler sensor 6 Heating water flow 22 mm i 4 o e J 7 Heating water return 22 mm 8 Drain valve T 9 Safety valve 12 16 10 Straight through shut off valve 3 3 b 6 11 Test port for pressure gauge S 1 o 12 Non return valve 5 13 Test valve 14 Pressure reducing valve only ue o 1 in case of gt 4 8 bar pressure Ed o al de 15 Electrical cable grommet gt a a 1 Sal SHK 16 DHW circulation pump A A 1 5 8 10 11 12 13 14 10 Dimensions in mm ES el Fig 5 We recommend the following combinations when using metal pipework for the installation Cold water line DHW line Copper pipe Copper pipe Steel pipe Steel or copper pipe Insulate the DHW line in accordance with local regulations Please adhere to the order of fittings on the cold water side precisely see Fig 5 Prior to installation Flush out the line Install the safety valve into the cold water line The expansion water must be able to be seen to drip into a basin or funnel The diameter of the connecting pipe must not be larger than the safety valve diameter Size the drain so that water can drain off even if the safety valve has been fully opened The outlet must not be able to be blocked closed off The safety valve must open at 6 bar Install a drain valve at the lowest point of the cold water supply line
5. 1792 660 690 180 464 L N PE 230 50 2 0 16 gl 22 outside G 1 2 20 6 0 53 approx 1 6 4 2 1 5 Safety heat exchanger 1 3 St em 11 10 95 4 5 22 outside 1 point at 35 C air temperature 70 rel humidity and 55 C water temperature Average value at 15 air temperature 70 rel humidity and heating water from 15 C to 55 3 At an average temperature difference AT 30 K difference between the average heat exchanger temperature and the average cylinder temperature 9 150 7 1 Additionally Order No Description PK 9 18 21 38 Condensate pump Air channel adaptor 07 14 48 For connection to air hoses channels160 and 200 mm dia circular Oh 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 pre selected Your local contractor will install connect and 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
6. equipment 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 respond 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 meta
7. Appliances with this label must not be disposed off with the general waste They must be collected separately and dis posed off according to local regulations For guarantees please refer to the respecti ve terms and conditions of supply for your country AN The installation electrical connec tion and first operation of this appli ance should be carried out by a qualified installer Recycling The company does not accept liability for failure of any goods supplied which are not installed in accordance with the manufac turer s instructions 10 STIEBEL ELTRON Deutschland STIEBEL ELTRON GmbH amp Co KG Dr Stiebel Stra e D 37603 Holzminden Tel 0 55 31 702 0 Fax 0 55 31 702 480 Email info stiebel eltron de www stiebel eltron de Austria STIEBEL ELTRON Ges m b H Eferdinger Str 73 A 4600 Wels Tel 072 42 47367 0 Fax 07242 47367 42 Email info stiebel eltron at www stiebel eltron at Belgium STIEBEL ELTRON Sprl P A Avenue du Port 104 5 Etage B 1000 Bruxelles Tel 02 4232222 Fax 02 4232212 Email info stiebel eltron be www stiebel eltron be Czech Republik STIEBEL ELTRON spol s r o K H j m 946 CZ 15500 Praha 5 Stod lky Tel 2 511 16111 Fax 2 355 12122 Email info stiebel eltron cz www stiebel eltron cz Denmark Exclusive Distributor PETTINAROLI A S Madal All 21 DK 5500 Middelfart Tel 63 41 66 66 Fax 63 41 66 60 Email info pettinaroli dk www pettinar
8. INSTALLATION AND OPERATING INSTRUCTIONS DOMESTIC HOT WATER HEAT PUMP WWK 300 WWK 500 SOL OD STIEBEL ELTRON Index Page Specification 2 Special accessories 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 4 1 8 Troubleshooting by users 4 Installation instructions for contractors 2 Safety equipment and maintenance 5 2 1 On the equipment 5 2 2 On the 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 Environment recycling 9 Customer service warranty 9 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 th
9. ain 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 may 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 x A 2 Safety equipment and maintenance 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 caused by a faulty DHW priority setting on a connected boiler Pull the mains plug out its socket before commencing any work on the
10. alten Subject to errors and technical changes Sous r serve d erreurs et de modifications techniques Onder voorbehoud van vergissingen en technische wijzigingen Salvo error o modificaci n t cnica R tt till misstag och tekniska ndringar f rbeh lls Excepto erro ou alteracao t cnica Zastrzezone zmiany techniczne i ewentualne btedy Omyly a technick zm ny jsou vyhrazeny A muszaki v ltoztat sok s t ved sek jog t fenntartjuk He 8250 Sweden STIEBEL ELTRON AB Friggagatan 5 SE 641 37 Katrineholm Tel 0150 48 7900 Fax 0150 48 7901 Email info stiebel eltron se www stiebel eltron se Switzerland STIEBEL ELTRON AG Netzibodenstr 23c CH 4133 Pratteln Tel 061 8 16 93 33 Fax 061 8 16 93 44 Email info stiebel eltron ch www stiebel eltron com Thailand STIEBEL ELTRON Asia Ltd 469 Moo 2 Tambol Klong Jik Ampur Bangpa In Ayutthaya 13160 Tel 035 22 00 88 Fax 035 22 11 88 Email stiebel loxinfo co th www stiebeleltronasia com United States of America STIEBEL ELTRON Inc 17 West Street West Hatfield MA 01088 Tel 4 13 247 3380 Fax 413 247 3369 Email info stiebel eltron usa com www stiebel eltron usa com STIEBEL ELTRON 264905 34546 4 8250 HD
11. e positioning installation observe all local national standards and requirements as well as the stipulations by your local water board and energy supply company Specification Type Part no Operational limits of the heat pump DHW temperature Heat pump Electric heating element Air volume throughput Cylinder capacity Refrigerant filling volume Dimensions H W D Weight dry filled Voltage frequency Puma ttl power cons fuse Water connections male thread Circulation connections male thread Condensate connection Permitted pressure water side Maximum power consumption Heat pump Heating capacity HP t 7 Power consumption Electric heating element Condenser C 2G m h kW Heat exchanger for external DHW heating type SOL Heat exchanger surface Material Content Permitted pressure Permitted flow temperature Pressure drop heat exchanger 1000 Pressure drop heat exchanger 1500 I h Heating capacity heat exchanger at flow temp 55 flow rate 1000 Water con heat ex male thread m bar C hPa hPa kW mm WWK 300 074361 6 to 35 25 to 55 adjustable 65 fixed 550 303 R 134a 850 1792 660 690 150 453 L N PE 230 50 2 0 16 gL 22 outside G 15 20 6 0 53 approx 1 6 4 2 1 5 WWK 300 SOL 074362 6 to 35 25 to 55 adjustable 65 fixed 550 284 134a 850
12. fect 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 Fig 2a 26_03_01_0315 C26 03 01 0009 Fig 3 Positioning 3 Installation The available floor area in the installation 3 1 Transport room must be at least 6 m 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 m FO 5 its dedicated packaging Where space is Never restrict the ambience around the restricted you may also move the equipment WWK 300 through walls or ceilings closer tipped backwards at an angle than shown in Fig 4 e The room temperature must never fall o 8 3 2 Positioning below 6 C as the ambient temperature a p 1 Unscrew the four screws from the non Will be reduced by approx 1 3 C through z 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 8 the pallet remove the anti vibra
13. h 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 Sanaa EW 6 C 70 15 C 11 5 h 3 3 15 70 15 9 0 h 4 2 35 C 47 15 6 4 h 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 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 cylinde
14. he cylinder capacity has reached a DHW temperature of 65 C the electrical supplementary heater is switched OFF but is not automatically switched ON again An indicator 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 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 a larger volume of DHW at approx 40 temperatures for baths and showers are generally around 40 C 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 ag
15. 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 The WWK can also be operated with a connection to an air duct for part no see page 2 However such air channels must not be smaller than 160 mm their length should not exceed a maximum of approx 5 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 1 2 Correct operation 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 heat liquids other than potable water install the equipment al outside b in rooms at risk from frost c 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 whic
16. ill 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 1 S1 _ ON a OFF ix yt Description in brackets see wiring diagram Fig 8 page 8 4 S5 2 52 H1 Fig 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 1 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 t
17. llic 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 Installation instructions for contractors When replacing the front facia en sure that the earth 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 relieving the pressure It is adjusted so that no water will be expelled when heating is switched OFF Should it continue to drip EQ 6 O STIEBEL ELTRON 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 per
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19. r The electrical supplementary heater is switched ON when the actual temperature falls below 58 and is switched OFF when 65 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 Never exceed the maximum inlet tem perature of 65 into the heat pump heat exchanger 1 5 Operation outside the limits of use below 6 C to 4 C Subject to the relative humidity and the DHW temperature 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 w
20. 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 0 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 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 D a gt gt ES gt gt STIEBEL ELTRON 3 Environment and ES Recycling of obselete appliances
21. tion been switched OFF o mounts from the pack supplied with the equipment and insert fully into the When installing the heat pump in a boiler equipment room ensure that the boiler will not be 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 Checking installation conditions in accordance with Fig 5 Air Air The room where the WWK 300 is be installed must meet the following conditions To facilitate an easy connection to the water Min 400 660 Min 400 Stable floor WWK 300 wet weight approx system the equipment will be supplied in a Dimensions in mm 455 kg separate pack with angled plug in fittings Never operate the WWK 300 in rooms at pipe connectors with union nuts and flat risk from explosion due to dust gases or gaskets Fig 4 vapours Fitting the plug in connector see page 9 Include in your considerations the ET utilisation of waste heat for example So ene cae from a boiler tumble drier or refrigerator duisi ma O freezer packing seal The use of hemp on connec tions is not acceptable Connection dimensions T Cold water supply 22 mm 2 DHW connection 22 mm 3 3 Condensate drain 1 2 15 pL hose connection E 4 Circulation connection G 1 2 9
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