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MW & EW 10 & 15 Litre Unvented Water Heaters

HANDBOOK

IMPORTANT:
This booklet should be given to the customer
after installation and demonstration.

Summary of Contents for EW10

Page 1: ...MW EW 10 15 Litre Unvented Water Heaters HANDBOOK IMPORTANT This booklet should be given to the customer after installation and demonstration ...

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Page 3: ... for electro technical and electronic equipment at the end of its service life Alternatively he may return the equipment to the retailer at the time of purchase of a new equivalent type of appliance Electronic equipment of size less than 25 cm can be handed over to any electronics equipment retailer whose sales area is at least 400 m2 for disposal free of charge and without any obligation to purch...

Page 4: ...d polystyrene etc within the reach of children they can cause serious injury 7 The appliance may not be used by persons under 8 years of age with reduced physical sensory or mental capacity or lacking the requisite experience and familiarity unless under supervision or following instruction in the safe use of the appliance and the hazards attendant on such use DO NOT permit children to play with t...

Page 5: ...unit when the appliance is heating For this reason one must install a drain open to the air with a continuously downwards sloping pipe in an area not subject to subzero temperatures Make sure to drain the appliance when it is out of service or in an area subject to subzero temperatures 15 Make sure to drain the appliance when it is out of service or in an area subject to subzero temperatures 16 Wa...

Page 6: ...lt of vibration Ref Do not open the appliance or remove from its installation Electrocution hazard due to the presence of live electrical equipment Personal injury burns caused by overheated components and wounds caused by sharp edges Do not climb onto the appliance Personal injury due to falling off the appliance Damage to the appliance or other property due to the appliance itself detaching from...

Page 7: ...r 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 No storage Storage No storage upline of the mixer valves Storage upline of the mixer valves No storage upline of the mixer valves No circulation of hot water Circulation of hot water No circulation of mixed water Circulation of mi...

Page 8: ...r 1 Hot water outlet 2 Temperature and pressure relief valve MW only 3 Cold water inlet 4 Control cover 5 Regulation knob 6 Heating neon Product information 10 6 6 15 7 4 Refer to the nameplate MW Undersink EW Undersink MW Undersink EW Undersink XXS 15 dB 10 15 2 706 2 691 2 697 2 675 32 7 32 9 32 8 33 0 EW under sink EW 10 15 MW under sink MW 10 15 1 3 4 6 5 1 3 4 2 6 5 ...

Page 9: ...tandard 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 The maximum temperature setting is achieved with the knob turned fully clockwise to the MAX position this will give a water temperature of approximately 65 68 C In hard water areas we recomm...

Page 10: ...e 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 MW 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 t...

Page 11: ...ressure reducing valve will need to 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 plu...

Page 12: ...xpansion in supply pipe work diagrams 2 3 Do not fit any stop cocks or non return valves within the distance required for expansion The distances quoted are for 15 mm pipe these can be approximately halved for 22 mm pipe to shorten the distance required for expansion ...

Page 13: ...e The vessel pressure charge is increased as it accommodates the expanded water so that the water is discharged from the vessel when the hot draw off is opened Please note that in ALL cases the DIELECTRIC JUNCTIONS MUST be connected to the heater before any other connection is made This is very important as they prevent an electrolytic reaction occurring and safeguard the heater against potential ...

Page 14: ...m and 27 m at least 3 times larger and so on Bends must be taken into account in calculating the flow resistance See diagram 6 and Table 2 4 The discharge pipe must have a vertical section of pipe at least 300 mm in length below the tundish before any elbows or bends in the pipe work 5 The discharge pipe must be installed with a continuous fall 6 The discharge must be visible at both the tundish a...

Page 15: ...rm or disabled people consideration should be given to the installation of an electronically operated device to warn when discharge takes place Note The discharge will consist of scalding water and steam Asphalt roofing felt and non metallic rainwater goods may be damaged by such discharges 500 mm Max 300 mm Min Temperature pressure relief valve Metal discharge pipe D1 from temperature pressure re...

Page 16: ... length is 7 m a 28 mm D2 copper pipe will be satisfactory d Electrical WARNING The appliance must be earthed The electrical installation must be in line with the current I E E wiring regulations A mains supply of 230 240 VAC BS 7671 3 kW 13 amps is required diagram 7 Heat resisting cable round 3 core 1 5 mm to BS 6141 table 8 should be used to connect to the electrical supply through either a 13 ...

Page 17: ...the cable is retained within the clamp Access to the terminal compartment is gained by prising out the model nameplate the two small inserts and then undoing the three screws revealed NOTE The earth terminal is located on the heating element securing bracket in the centre of the appliance e Commissioning Check that all the necessary components are supplied and for those not factory fitted that the...

Page 18: ...aintenance a For the user In order to obtain the best performance from the heater the sacrificial anode must be inspected every year at more regular intervals in aggressive water areas If the heating element is heavily coated with scale we recommend descaling at the time of this inspection Where the additional cold water controls are fitted the expansion vessel will need to be recharged by the ins...

Page 19: ...the time Cause Mains pressure is above 6 bar A pressure reducing valve must be fitted refer to diagram 3 3 Dripping while unit heating Cause Not enough pipe work for expansion or stop cock non return valve or pressure reducing valve has been fitted within the distance required for expansion refer to diagrams 4 5 If an expansion vessel has been fitted the charge may have failed 4 No hot water Cause...

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Page 21: ...7783310 PLASTIC COVER MW EW 18 97783314 KNOB REGULATION MW EW 22 97783321 SAFETY VALVE 6 BAR EW 22 97783309 T P VALVE 1 2 7 BAR MW 23 97783318 ANODE D 21 3 L 110 M5 M8 MW EW 30 97783307 SCREW M6x12 MW EW 33 97783316 FLANGE GASKET MW EW 38 97783313 SCREW COVER MW EW 44 97783308 CABLE CLAMP MW EW 45 97783312 FLANGIA SCREW M6x12 MW EW 53 97783303 CONFECTION DIELECTRIC JOINTS 1 2 MW EW 54 97783306 WIR...

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Page 24: ...been used in accordance with these instructions and has not been tampered with or otherwise subject to misuse neglect or accident c The appliance has not been taken apart modified or repaired except by a person authorised by us d Evidence of the date of purchase in the form of an invoice receipt hire purchase documents is included with the appliance if returned under guarantee This guarantee does ...

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