Installation and maintenance instructions High-efficiency hot water storage tank Installation and maintenance instructions English High-efficiency hot water storage tank EKHWP300B EKHWP500B List of contents 1 Safety . 4 7 Technical data . .22 1.1 Observing instructions . 4 7.1 Basic data . 22 1.2 Warning signs and explanation of symbols . 4 7.1.1 EKHWP . 22 1.3 Avoid danger . 4 7.2 Performance diagrams . 23 1.4 Proper use . 5 7.2.1 EKHWP . 23 1.5 Instructions for operating safety. 5 7.3 Tightening torque . 23 1.5.1 Before working on the hot water storage tank and the heating system . .5 8 List of keywords . .24 1.5.2 Electrical installation of optional accessories . .5 1.5.3 Installation room . .5 1.5.4 Requirements of the heating and filling water . .5 1.5.5 Heating and sanitary side connection . .5 1.5.6 Operation . .5 1.5.7 Instructing the user/owner. .5 1.5.8 Documentation . .5 2 Product description. 6 2.1 Design and components . 6 2.1.1 High-efficiency hot water storage tank (Unpressurised system - drain-back) . .7 2.2 Brief description . 8 2.3 Accessories . 8 2.3.1 Electric immersion heaters . .8 2.3.2 Non return valves . .8 2.3.3 Dirt filter. .8 2.3.4 Scalding protection . .9 2.3.5 Solar storage tank extension kit . .9 3 Set-up and installation . 10 3.1 Set-up . 10 3.1.1 Important information . .10 3.1.2 Scope of delivery. .10 3.1.3 Installing the hot water storage tank . .11 3.2 Installation . 12 3.2.1 Important information . .12 3.2.2 Overview of connections. .12 3.2.3 x Hydraulic connection . .13 3.2.4 Connecting together several hot water storage tanks . .13 3.2.5 Connection booster heater (accessories) . .14 3.2.6 Filling the hot water heat exchanger . .15 3.2.7 Filling the storage tank . .15 3.2.8 Filling solar panel circuit . .15 3.2.9 Filling the heating system and the storage tank charging circuit . .15 4 Commissioning, decommissioning . 16 4.1 Start-up . 16 4.2 Taking out of service . 17 4.2.1 Temporary shutdown . .17 4.2.2 Final shutdown . .18 5 Hydraulic connection . 19 5.1 Connection diagrams . 19 5.1.1 EKHWP. .19 6 Operation and maintenance . 21 6.1 Operation . 21 6.1.1 Storage tank . .21 6.1.2 Booster heater EKBH3S (Accessories). .21 6.2 Service and maintenance . 21 Installation and maintenance instructions EKHWP 300/500B High-efficiency hot water storage tank 2 008.1618744_00 – 02/2013 1 x Safety 1 Safety 1.1 Observing instructions Special warning signs Some types of danger are represented by special symbols: This instruction is the >> Original Version << in your language. Please read this manual carefully and thoroughly before Electric power proceeding with the installation or modification of the heating system. Risk of burning or scalding. These instructions are intended for authorised and trained heating and sanitation experts who have experience in the proper Validity installation and maintenance of heating systems and hot water Some information in this manual has limited validity. The validity storage tanks by virtue of their technical training and knowledge. is highlighted by a symbol. This manual provides all the necessary information for instal- Observe stipulated tightening torque. lation, start-up and maintenance, as well as basic information on operation and settings. Please go through the attached Only applicable for the unpressurised system (drain-back) documents for a detailed description of operation and control. Order number Relevant documents Notes related to order numbers are identified by the shopping – When connecting to an external heat generator; the associ- cart symbol . ated installation and operating instructions. – When connecting to a DAIKIN solar system; the associated Handling instructions installation and operating instructions. ● Instructions on actions are shown as a list. Actions of which The guides are included in the scope of supply for the individual the sequential order must be maintained are numbered. units. Results of actions are identified with an arrow. 1.2 Warning signs and explanation of symbols 1.3 Avoid danger Meaning of the warnings The DAIKIN EKHWP 300/500B is state-of-the-art and is built to Warnings in this manual are classified according into their meet all recognised technical requirements. However, improper severity and probability of occurrence. use may result in serious physical injuries or death, as well as property damage. DANGER! To prevent such risks, install and operate DAIKIN EKHWP Draws attention to imminent danger. 300/500B only: – as stipulated and in perfect condition, Disregarding this warning can lead to serious injury or – with an awareness of the safety and hazards involved. death. This assumes knowledge and use of the contents of this manual, the relevant accident prevention regulations and the recognised WARNING! safety-related and occupational medical rules. Indicates a potentially dangerous situation. WARNING! Disregarding this warning can result in serious injury or death. This unit is not intended for use by persons (including children) with impaired physical, sensory or mental faculties or persons with insufficient experience and/or CAUTION! expertise unless supervised by a person responsible for ensuring their safety or are given instruction by this Indicates a situation which may cause possible person on how to use the unit. damage. Disregarding this warning can lead to damage to ● Keep flammable materials away from the DAIKIN EKHWP property and the environment. 300/500B. This symbol identifies user tips and particularly useful information, but not warnings or hazards. Installation and maintenance instructions EKHWP 300/500B High-efficiency hot water storage tank 4 008.1618744_00 – 02/2013 1 x Safety 1.4 Proper use 1.5.4 Requirements of the heating and filling water The DAIKIN EKHWP 300/500B may only be used as a hot water Avoid damages caused by deposits and corrosion: Observe storage tank. The DAIKIN EKHWP 300/500B must be installed, the current technological regulations to prevent corrosion connected and operated only according to the information in this products and deposits. manual. Measures for desalination, softening or hardness stabilization are When connecting to a DAIKIN heat pump you must use only the necessary, if the filling and top-up water have a high total storage tank connection kits (E-PAC) provided for the purpose. hardness (>3 mmol/l - sum of the calcium and magnesium concentrations, calculated as calcium carbonate. Only those electric immersion heaters supplied by DAIKIN may be used. 1.5.5 Heating and sanitary side connection Any other use outside the intended use is considered as improper. The operator alone shall bear responsibility for any ● Create a heating system according to the safety requirements resulting damage. of EN 12828. ● With sanitary connection, you must observe; Use as intended also involves compliance with maintenance and –EN 1717 - Protection of domestic water from contamina- inspection conditions. Spare parts must at least satisfy the tion in domestic water installations and general require- technical requirements defined by the manufacturer. This is the ments concerning safety equipment for the prevention of case, for example, with the use of original replacement parts. domestic water contamination by back-flow –EN 806 - Technical regulations for domestic water instal- 1.5 Instructions for operating safety lations (TRWI) – and, in addition, the country-specific legal regulations. 1.5.1 Before working on the hot water storage tank ● During operation of the DAIKIN EKHWP 300/500B in combi- and the heating system nation with the solar energy exploitation, the hot water temperature can exceed 60 °C. Scalding protection needs to ● Work on the hot water storage tank and heating system (e.g. be included when you install the system (domestic hot water installation, connection and initial start-up) should only be mixing device e.g. VTA32). carried out by authorised and trained heating experts. ● Use a pressure reducer if the cold water connection pressure ● Switch off the main switch before starting any work on the >6 bar. domestic hot water storage tank and heating system and secure it against unintentional switch-on. 1.5.6 Operation ● Seals must not be damaged or removed. ● Make sure that the safety valves comply with the require- ● Only operate the DAIKIN EKHWP 300/500B;. ments of EN 12828 when connecting on the heating side, and – After all installation and connection work has been com- with the requirements of EN 12897 when connecting on the pleted. domestic water side. – With fully installed equipment covers and service accesses. 1.5.2 Electrical installation of optional accessories – With sanitary side pressure reducers installed (max. 6 bar). ● Before beginning work on live parts, disconnect them from the – With heating side pressure reducers installed power supply (switch off main switch, remove fuse) and (max. 3 bar). secure against unintentional restart. – With completely filled storage containers (fill level dis- ● Electrical installations may only be carried out by qualified play). electrical technicians under observance of the relevant electrical guidelines and the regulations of the electric utilities The specified servicing intervals should be adhered to and company. inspection work must be carried out. ● For each hardwired power connection, install a separate disconnector system compliant with EN 60335-1 for all-pole 1.5.7 Instructing the user/owner disconnection from the power mains. ● Before you hand over the heating system and the hot water ● Compare the mains voltage indicated on the nameplate with storage tank, explain to the owner how he/she can operate the supply voltage before connecting to the mains. and check the heating system. ● Hand over the technical documentation (this document and 1.5.3 Installation room all supporting documents) to the user and advise him that For safe and fault-free operation, it is necessary that the instal- these documents must be made available at all times and be lation location of the DAIKIN EKHWP 300/500B fulfils certain stored in the immediate vicinity of the unit.