Views
1 year ago

Piccolo - User & Installation Manual

  • Text
  • Use
  • Heater
  • Appliance
  • Legionella
  • Thermostat
  • Piccolo
  • Installation
  • Manual

Anti-legionella

Anti-legionella recommendations (European standard CEN/TR 16355) Information Legionella is a small bacterium, of stick-like form, and is found naturally in fresh water. Legionnaire's disease is a serious pulmonary infection caused by inhalation of the Legionella pneumophilia bacterium and other species of Legionella. The bacterium is frequently to be found in the plumbing of houses, hotels and water used in A/C and air cooling systems. The most effective measure against infection is to prevent the bacterium proliferating in water circuits. European standard CEN/TR 16355 provides guidelines for preventing the proliferation of Legionella in drinking water systems, without substituting applicable local legislation. General recommendations “Conditions favourable to the proliferation of Legionella”. The following conditions are favourable to the proliferation of Legionella: • Water temperature in the range 25 - 50 °C. To reduce the proliferation of Legionella, the water temperature be kept with these limits to prevent them growing or reduce their growth to a minimum. If this is not possible, the drinking water system must be sanitised thermally; • Stagnant water. To prevent water stagnating for a long time, the drinking water system must be flushed or made to run abundantly at least once a week; • Nutrients, biofilms and sediment in the circuit, including boilers, etc. Sediment may promote the proliferation of Legionella and should be regularly eliminated from water storage devices, boilers and expansion/holding tanks (for instance, once a year). As regards storage heater like the present, if: 1) the appliance is switched off for several months at a time or 2) the water temperature is kept constant in the range 25 - 50°C, the Legionella bacterium may grow inside the tank. If such circumstances, to reduce the proliferation of the bacterium, one must run a thermal sanitisation cycle. Electromechanical storage heaters are sold with a thermostat set to a temperature higher than 60°C, which permits a thermal sanitisation cycle to be run to reduce the proliferation of Legionella in the tank. This cycle is suited to use in domestic hot water systems and complies with the guidelines for the prevention of Legionella given in Table 2 of standard CEN/TR 16355 (see below). Table 2 - Types of hot water system Separate hot and cold water Mixed hot and cold water Ref. in Enclosure C Temperature Stagnation Sediment No storage No circulation of hot water C.1 - - - Circulation of hot water No circulation of mixed water Storage Circulation of mixed water No storage upline of the mixer valves No circulation of mixed water Circulation of mixed water C.2 ≥ 50 °C e C.3 in C.4 ≥ 50 °C e C.5 thermal C.6 thermal storage disinfection d disinfection d heater a ≤ 3 l b - ≤ 3 l b - - remove c remove c - ≤ 3 l b - Storage upline of the mixer valves No circulation of mixed water C.7 in storage heater a - remove c Circulation of mixed water C.8 ≥ 50 °C e thermal disinfection d ≤ 3 l b remove c GB No storage upline of the mixer valves No circulation of mixed water C.9 Circulation of mixed water thermal thermal disinfection d disinfection d - - C.10 ≤ 3 l b a Temperature ≥ 55°C all day or at least 1h a day ≥60°C. b Volume of water contained in the pipes between the circulation system and the most distant tap. c Remove the sediment from the storage heater as required by local conditions, but no less frequently than once a year. d Thermal disinfection for 20 minutes at 60°C, for 10 minutes at 65°C or 5 minutes at 70 °C at all delivery points at least once a week. e The water temperature in the circulation circuit may not fall below 50°C. - Not required However, the thermal disinfection cycle does not kill all Legionella bacteria in the storage tank. It follows that if the water temperature setting is less than 55°C, the Legionella bacterium infection may reoccur. Caution: the water temperature in the tank can cause immediate serious burns. Children, disabled persons and the aged are particularly at risk of burns. Check the water temperature before taking a bath or shower. - 25

GB However, the thermal disinfection cycle does not kill all Legionella bacteria in the storage tank. It follows that if the water temperature setting is less than 55°C, the Legionella bacterium infection may reoccur. Caution: the water temperature in the tank can cause immediate serious burns. Children, disabled persons and the aged are particularly at risk of burns. Check the water temperature before taking a bath or shower. DESCRIPTION OF THE WATER HEATER (see fig. 4) A. Pilot lamp B. Control knob C. Front cover TECHNICAL CHARACTERISTICS For the technical specifications, refer to the nameplate (the nameplate is located next to the water intake/outlet pipes). Product information 5 2,6 Kg Oversink Undersink Refer to the nameplate 2,182 2,366 XXS 15 dB 38,8% 36,4% 5 The power consumption data in the table and the other information given in the Product Data Sheet (Enclosure A to this manual) are defined in relation to EU Directives 812/2013 and 814/2013. The products without the label and the data sheet for water heaters and solar devices, stipulated in regulation 812/2013, are not intended to be used in such assemblies. Products equipped with a regulator knob have the thermostat positioned in the setting indicated in the Data Sheet (Enclosure A), according to which the relevant energy class has been declared by the manufacturer. This appliance is conforming with the international electrical safety standards IEC 60335-1 and IEC 60335-2- 21. The CE marking of the appliances attests its conformity to the following EC Directives, of which it satisfies the essential requisites: - LVD Low Voltage Directive: EN 60335-1, EN 60335-2-21, EN 60529, EN 62233, EN 50106. - EMC Electro-Magnetic Compatibility: EN 55014-1, EN 55014-2, EN 61000-3-2, EN 61000-3-3. - RoHS2 Risk of Hazardous Substances: EN 50581. - ErP Energy related Products: EN 50440. INSTALLATION NORMS (for the installer) ! WARNING! Follow the general warnings and the safety norms listed at the beginning of the text and keep to all the instructions given under all circumstances. The installation and set-up of the water heater must be carried out by a competent person in conformity with the applicable norms in force and with any provisions set forth by local authorities and public health bodies. Warning: this is an open outlet appliance (no pressure) and can be installed in one point of use only. The electrical and plumbing connections must be made in compliance with the applicable norms in force. The appliance heats water to a temperature below boiling point. It must be linked up to a mains water supply according to the appliance performance levels and capacity. Before connecting the appliance, it is first necessary to: - Check whether the characteristics (please refer to the data plate) meet the customer’s requirements. - Make sure the installation conforms to the IP degree (of protection against the penetration of liquids) of the appliance according to the applicable norms in force. - Read the instructions provided on the packaging label and on the appliance data plate. 26