1 year ago

Andris R - User & Installation Manual

  • Text
  • Valve
  • Discharge
  • Heater
  • Fitted
  • Mains
  • Tundish
  • Appliance
  • Electrical
  • Reducing
  • Anode
  • Andris
  • Manual


USER INSTRUCTIONS PLEASE KEEP THIS BOOKLET FOR FUTURE REFERENCE The heater is insulated to a high standard therefore it may be left on all the time. The temperature of the water may be adjusted by turning the knob on the front of the heater, allow half an hour for the temperature to stabilise between settings. Maximum temperature is achieved with the knob turned fully clockwise. The mark on the regulation knob indicates an setting and corresponds to a water temperature of 55 - 60°C. In hard water areas we recommended a max. 60°C. The neon light shows when the heating element is working, under control of the thermostat. If in doubt ring Ariston Thermo UK Ltd. Technical department 03332407777 Customer service department 03332408777. Note: The water heater does not have an “off” or “low” setting. Water Regulations and Byelaws These regulations and byelaws ensure a good supply of wholesome water, and that only approved materials, pipes and fittings are used to convey water. Building Regulations These are a statutory document and take priority over all other regulations and recommendations. The installation of an unvented hot water system of over 15 litres is classified as a “Controlled Service” and Regulation G3 applies. To meet the requirements of the regulation, installation of an unvented system should be undertaken by a “competent installer”. All installations of unvented hot water storage systems having a capacity of more than 15 litres should be notified to the relevant Local Authority by means of building notice or by the submission of full plans. It is important to note that it is a criminal offence to install an unvented hot water storage system over 15 litres without notifying the Local Authority. Delivery The models are supplied with the following: Unvented water heater (with factory-fitted T&P model 30L) Wall bracket Pressure relief valve set at 6 bar Dielectric junctions Tundish (model 30L only) Expansion Vessel (model 30L only) Check Valve (model 30L only) Pressure reducing Valve (model 30L only) Important note: Dielectric junctions must be fitted to all models as they prevent an electrolytic reaction and safeguard against potential aggressive corrosion. How the heater works The heating element is controlled by a thermostat which senses the water temperature. The operating temperature can be adjusted by the regulation knob on the front of the heater. In addition to the thermostat there is a thermal cut-out which is set to switch off the power to the element if the thermostat fails and the water temperature rises too high. Once the cut-out operates it can only be reset manually (this should be carried out by the installer - see maintenance). A magnesium anode is provided to prevent corrosion of the water container. The 30L model has a temperature and pressure relief valve on top of the heater which is a safety device to back-up the thermostat and thermal cut-out. It works by sensing an excess water temperature or pressure and releasing the hot water to the discharge tundish and drain. The heater will only work in the vertical position as the element is shaped to heat the water at the bottom of the tank. The inlet pipe needs to deliver cold water to the bottom of the tank and the hot water outlet draws water from the top of the tank. When water is heated it expands, in a small unvented water heater of this type the expansion can normally be accommodated back into the cold water mains (not model 30L). Where this is not possible the installer will need to fit a set of cold water controls. Note: If a valve i.e. a non return valve, water meter, pressure reducing valve or any type of valve or fitting that acts as a non return valve is installed on the cold water mains, this will prevent expansion. Therefore it will be necessary to install an expansion vessel (see pages 10 figs 2 & 3). Note: If in doubt always install a pressure reducing valve (limited to 3.5bar) and expansion vessel. x1 x1 x1 x2 x1 x1 x1 x1 8

INSTALLATION INSTRUCTIONS Before installing the heater read these instructions in full. If you are unsure please contact our technical service department (03332407777). Note: For further information please refer to the flow chart on page 19 which gives guidance on choosing controls. The installation must comply with all relevant Water Regulations/Byelaws and Building Regulations. The installer should check with the local water authority for confirmation of the maximum water supply pressure. a) SITING & FIXING WARNING: The appliance should be left packed until it is ready to be installed. When unpacking the 30 L model take care not to damage the temperature and pressure relief valve on the top of the heater. A drain has to be provided for any water discharged through the safety valves. Access to the heater is not normally needed on a day-to-day basis, but 300 mm clearance to the front of the water heater sould be kept for servicing and maintenance A cold water supply pressure between 1 and 3.5 bar is required (if the mains pressure is above 3.5 bar a pressure reducing valve must be installed). Please note that turning down the stop-cock will reduce flow not pressure. The outlet pressure from the reducing valve (if supplied) is 3.5 bar. A 240 VAC; 3 kW single phase electrical supply is required. Position the heater against the wall and mark the position of the hooked wall bracket. Fasten the wall bracket to wall using suitable screws and wall plugs (ensure that wall is suitable to support the unit, allowing for the extra weight of water when it is full). Hang the heater on the bracket making sure that the heater is pulled well down on to the bracket, if necessary by forcing the hooks into the foam insulation. Ensure the unit is accessible and maintains sufficient clearances to allow for service and maintenance. Ensure the unit is installed in a place where freezing will not occur. Ensure a suitable low level drain off cock is installed on the hot and cold plumbing system. b) PLUMBING WARNING: The appliance must not be supplied with water of hardness less than 120ppm, nor with especially hard water (greater than 250ppm); we recommend installing a water softener, properly calibrated and controlled - do not allow the residual hardness to fall below 150ppm. The outlet from temperature and pressure relief valve/pressure relief valve must not be for any other purpose. Take great care not to allow any swarf into the pipe work or fittings, as this might impair the operation of the safety valve(s). The water connection may be carried out as per the following: Fig. 1 (Note: this system is not suitable for 30L) Pressure relief valve (6 bar) Nearest cold water draw-off Isolating valve (fixed jumper or 1/4 turn ball type) Dielectric junctions Hot Cold Cold water mains Disharge Supply to other parts of plumbing system 2.8 m (10 l) or 4.2 m (15 l) of 15 mm pipe is required for expansion 9