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Piccolo - User & Installation Manual

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

Installing the appliance

Installing the appliance This appliance was designed to be installed only inside buildings in compliance with the applicable norms in force. Furthermore, installers are requested to keep to the following advice in the presence of: - Damp: do not install the appliance in closed (unventilated) and damp rooms. - Frost: do not install the appliance in areas where the temperature may drop critically and there may be a risk that ice may form. - Sunlight: do not expose the appliance to direct sunrays, even in the presence of windows. - Dust/vapours/gas: do not install the appliance in the presence of particularly aggressive atmospheres such as acidic vapours, dust or those saturated with gas. - Electrical discharges: do not install the appliance directly on electrical supplies that aren’t protected against sudden voltage jumps. ! See warning no. 26 ! See warning no. 9 - In the case of walls made of bricks or perforated blocks, partition walls featuring limited static, or masonry different in some way from those stated, you first need to carry out a preliminary static check of the supporting system. Install the appliance using the special bracket provided in the box, fastening it using 2 screws/Rawlplugs measuring 6 mm in diameter. ! See warning no. 10 Local norms could set forth restrictions regarding the installation in a bathroom environment. Therefore keep to the minimum distances foreseen by the applicable norms in force. The appliance should be installed as close as possible to the point of use to limit heat dispersion along the piping. ! See warning no. 20 Plumbing connection Before making the plumbing connection, you must arrange for the system to be cleaned thoroughly to eliminate any residue or dirt that could compromise the proper operation of the water heater. Connect the water heater inlet and outlet to resistant pipes or pipefittings, as well as to the operating pressure, the temperature of the hot water that could at times reach well over 80°C. We advise against the use of materials that cannot withstand such high temperatures. We recommend you use dielectric joints for the electrical insulation of the appliance from the water mains. Connect the inlet pipe (marked with a blue rubber washer) and the outlet pipe (red rubber washer) to the corresponding pipes of the system. Tighten couplings E using a pair of spanners as illustrated in fig. 4 In the event of low mains pressure values, install the appliance at no more than one metre above the tap (fig. 3) and no more than 2 metres form the side of the latter. Should these distances be greater than the recommended values, you must include an air valve on the hot water pipe. Fill the appliance up and let the water flow out of the tap for a few seconds. The water flow rate, with the tap turned on fully, should not be more than 5 l/min; for this reason, in accordance with DIN 44531 norm, you should adjust the small valve (fig. 5) to limit the water flow. In the presence of particularly hard waters, there will be a considerable and rapid formation of limescale inside the appliance, with a consequent loss in efficiency and damage to the electric heating element. Electrical connection For greater safety, have qualified personnel carry out a careful inspection of the electrical system, ensuring it complies with the applicable norms in force, because the appliance manufacturer will not be held responsible for any damage caused by the lack of earthing of the system or for faults in the electricity supply. ! See warning no. 24 - Check that the system is suitable for the maximum power absorbed by the water heater (please refer to the data plate) and that the cross-section of the electrical connection cables is suitable, and no less than 1.5 mm 2 . The power supply cable (type H05 W-F 3x1.5, 8.5 mm in diameter) should be inserted in the corresponding hole (X fig. 6) situated in the vicinity of the control knob and feed it until it reaches the thermostat slots (T fig. 6). The electrical connection should be made directly on the terminals (D fig. 6) of the thermostat (respect the L-N polarity). The appliance is fitted with a cable and plug. For installations without a plug, use a bipolar switch in conformity with the applicable norms in force (fused with a minimum contact opening of 3 mm). The appliance must be earthed and the earth wire (yellow-green colour) should be fastened to the special faston on the heating element and marked with the (PE fig. 6). Secure the power supply cable in place using the special cable clamp provided with the appliance GB ! See warning no. 11 27

GB The use of multiplugs, extensions or adaptors is strictly prohibited. It is strictly forbidden to use the piping from the plumbing, heating and gas systems for the appliance earthing connection. The appliance is not protected against the effects caused by lightning. Before turning the appliance on, make sure the supply voltage complies with the value stated on the appliance data plate and that the appliance itself is filled with water. If the appliance is not supplied with a power supply cable, make a fixed connection to the mains using a rigid pipe or cable for permanent installation. Starting and testing the appliance Before powering the appliance, fill the tank up with mains water. Set the knob (F fig. 6) to the desired position, plug the appliance into the socket or switch the main switch to “ON”. Check the appliance operation until the end of the first heating cycle, indicated by the relative pilot lamp turning off. During the heating phase, the water expansion could cause some trickling from the tap: this is completely normal and does not mean the tap is faulty. Do not screw the taps too tightly to prevent damaging their seals. In the event of a malfunction, read the paragraph regarding the MAINTENANCE REGULATIONS. Adjusting the operating temperature The temperature of the water can be selected on the knob (F fig. 6) and can be adjusted from 40 to 80°C approximately. We recommend you set the temperature of the water heater to 60°C to: - reduce the formation of limescale; - reduce heat dispersion; - avoid the risk of bacteria proliferation. Anti-freeze function If the temperatures in the room where the appliance is installed can reach particularly low values, set the knob (F fig. 6) to setting *. The pilot lamp (A fig. 4) stays on during the heating phase. MAINTENANCE REGULATIONS (for competent persons) ! 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. All maintenance operations and service visits should be performed by a competent person (who have the skills required by the applicable norms in force). Before performing any maintenance operations and/or replacing any components, disconnect the appliance from the electricity mains using the external switch; empty out the water heater if necessary. ! See warning nos. 20 - 26 - 28 Replacing parts, when necessary To access the electrical parts (heating element, thermostat, pilot lamp), remove the cover C by unscrewing screws D (fig. 4). In the event of an intervention on the thermostat, disconnect the latter from the electricity mains and slide it out of its seat on the heating element. In the event of an intervention on the heating element, unscrew the bolts (A fig. 6) using a 10 mm spanner. When remounting the components, make sure you put the flange seal, the thermostat, the heating element and all pipes back in their original position. We recommend you replace the seal each time you dismount the flange. Once the aforementioned operations are complete, make sure you fill the appliance with water before powering it. Periodic maintenance The following operations should be performed annually: - empty the appliance and dismount the heating element; - carefully remove all limescale from the heating element parts; if you prefer not to use acids designed especially for this purpose, use non-metallic objects to break off the limescale crust that has formed, taking care not to damage the heating element’s armour. - We recommend you replace the seal each time you dismount the heating element. 28