Ariston Andris R 10-15-30 ltr Manual

The heater will only

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. 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). 8 / EN

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 DIELECTRIC JUNCTIONS ISOLATING VALVE (FIXED JUMPER OR 1/4 TURN BALL TYPE) HOT COLD COLD WATER MAINS SUPPLY TO OTHER PARTS OF PLUMBING SYSTEM DISCHARGE 2.8 m (10 l) or 4.2 m (15 l) of 15 mm pipe is required for expansion 1) Using the feed pipe to accommodate expansion (Schedule 2, Section 6: Paragraph 15 of the Water Supply (Water Fittings) Regulations 1999 and the Water Byelaws 2000, Scotland) (Fig. 1). Do not fit any stop cocks or isolating valves within the distance required for expansion. If a pressure reducing valve is needed, due to a mains pressure of over 3.5 bar, an expansion control kit must be fitted regardless of expansion pipework installed. The expansion distances quoted are for 15mm pipes and can be approximately halved for 22mm pipes. 2) Using a set of expansion controls (Fig. 2 & 3). Fig. 2 The tundish must be installed away from electrical devices. (Models 10/15L) KIT A EXPANSION VESSEL (CHARGE AT SET 3.5 bar) DIELECTRIC JUNCTIONS PRESSURE RELIEF VALVE (6 BAR) NEAREST COLD WATER DRAW-OFF KIT B PRESSURE REDUCING VALVE (SET AT 3.5 bar) ISOLATING VALVE (FIXED JUMPER OR 1/4 TURN BALL TYPE) HOT COLD KIT A NON-RETURN VALVE COLD WATER MAINS SUPPLY TO OTHER PARTS OF PLUMBING SYSTEM DISCHARGE 9 / EN