A.O. Smith DRE 52 Installation And User Instructions Manual
Hot water storage devices
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Also See for DRE 52:
- Service handbook (76 pages) ,
- Instruction manual (44 pages) ,
- Installation and user instructioins (26 pages)
Related Manuals for A.O. Smith DRE 52
Summary of Contents for A.O. Smith DRE 52
- Page 1 MODELS DRE 52 DRE 80 DRE 120 INSTALLATION AND USER INSTRUCTIONS United Kingdom / Ireland HOT WATER STORAGE DEVICES...
- Page 2 All rights reserved. Nothing from this edition may be copied, reproduced and/or made public by means of press, photocopying or in any other way without the prior written permission of A.O. Smith Water Products Company. A.O. Smith Water Products Company reserves the right to change the specifications as mentioned in this manual.
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Page 3: Table Of Contents
WARRANTY ..................23 General Warranty.................... 23 Tank Warranty ....................23 Conditions of installation and use ..............23 Exclusions ....................... 24 Extent of the warranty ..................24 Claims ......................24 No obligations for A.O. Smith other than those specified here....... 24... -
Page 4: General
1. GENERAL on the inside. The tank is also provided with two sacrificial anodes to give extra Device Description protection against corrosion. A thick CFC free polyurethane insulation layer, covered with a steel casing, prevents unnecessary The structure and equipment for this heat loss. -
Page 5: Regulation And Safety
Regulation and Safety For clarification see the diagram below: (the image is an extract from the electrical diagram further on) Fig. 1 - regulation and safety... - Page 6 (9). The element into operation while there is insufficient (10) is fed from the regulating thermostat. water present in the device (boil dry protection). The safety fuses, 30 Amp T for 600 V can be ordered retrospectively from A.O. Smith.
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Page 7: Boil Dry Protection
1.2.1 Boil Dry Protection Fig. 2 - float switch The boil dry protection mechanism is completely above it. In this case the consists of a float switch which monitors device will not come into operation. the water level approximately halfway If the exposure height is set lower than up the tank above the elements. -
Page 8: Checking The Float Switch
1.2.2 Checking the Float Switch Switch off the feed voltage and remove the fuses from the elements. In this way the control circuit can be tested without the elements being put into operation. Drain the device until the water is definitely below the float switch. If desired the float switch can now be removed for visual inspection. -
Page 9: Technical Description
Technical description Fig. 3 - Measurements Measurement Description Height hot water connection 1460 1580 1600 Height of upper side of device 1420 1540 1570 Diameter of boiler Depth Height of drain valve Height cold water supply Height T&P connection 1230 1335 1380 Cold water connection... -
Page 10: Technical Data
Technical Data Type DRE 52-9 DRE 52-18 DRE 52-36 Tank capacity litres Number of elements - Power 380V-3F kW 15.2 30.3 Power 400V-3F kW 16.8 33.6 Power 414V-3F kW 18.0 36.0 Heating time up to 60C* (400/414V) min 83/78 42/39... - Page 11 Type DRE 120-9 DRE 120-18 DRE 120-36 DRE 120-54 Tank capacity litres Number of elements - Power 380V-3F kW 15.2 30.3 45.5 Power 400V-3F kW 16.8 33.6 50.4 Power 414V-3F kW 18.0 36.0 54.0 Heating time up to 60C* (400/414V) min 187/174 93/87 47/44...
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Page 12: For The Installer
overflow of the inlet combination. This is 2. FOR THE INSTALLER a normal occurrence. The dripping must never be obstructed and/or blocked. The Installation procedures drain must remain free at all times with regard to the surroundings. The device may only be placed in a space if this meets the valid national and local The device must be provided with a regulations. -
Page 13: Electrical Diagrams
3 elements connection with 6 elements with nine elements Area of application: Area of application: Area of application: DRE 52-9, DRE 52-18 DRE DRE 80-9, DRE 80-18 DRE DRE 120-9 DRE 120-18 52-36 DRE 80-54 80-36 DRE 120-54 DRE 120-36... - Page 14 Electrical diagram – 3 phases – 3 elements A = Network connection B = Fuses C = Relay D = Fuse E = Transformer F = Safety relay G = Float switch H = Maximum thermostat K = Regulation thermostat Electrical heating element X1 = Terminal block...
- Page 15 Electrical diagram – 3 phases – 6 elements A = Network connection B = Fuses C = Relay D = Fuse E = Transformer F = Safety relay G = Float switch H = Maximum thermostat K = Regulation thermostat Electrical heating element X1 = Terminal block...
- Page 16 Electrical diagram – 3 phases – 9 elements A = Network connection B = Fuses C = Relay D = Fuse E = Transformer F = Safety relay G = Float switch H = Maximum thermostat K = Regulation thermostat Electrical heating element X1 = Terminal block...
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Page 17: Putting Into Operation
Putting into operation Temperature in °F Temperature in °C 2.2.1 Filling the Device 1. Fit the drain valve and check whether it is closed. 2. Open cold water valve to the boiler and open all valves at hot water drainage points for bleeding. The device is filled as soon as cold water flows at all drainage points. -
Page 18: Temperature Regulation
2.2.4 Temperature Regulation 2.3.1 Sacrificial anode The device is continuously under The life of the anodes is determined water pipe pressure (maximum 8 bar by the quality and the quantity of water (=800 kPa)). Cold water may be fed flowing through the device. It is thus if hot water is being consumed. -
Page 19: Water Temperature Not Good
If it is not set to a high temperature it is probably defective and in this case it must be replaced. Check the fuses as well and replace them if necessary. The fuses can be ordered through A.O. Smith. -
Page 20: Fault Table
2.4.3 Fault Table Fault Cause Solution Insufficient or Temperature set too low Set regulating thermostats higher. no hot water Maximum thermostats break the Press in reset button. circuit. Connector is not seated in stop Check the relevant parts. contact, mains switch is off or fuses are broken. -
Page 21: For The User
3. FOR THE USER 3.1.3 Use The device is under water pipe pressure Instructions for Use (maximum 8 bar (=800 kPa)). As much cold water is fed is as hot water consumed. The regulating thermostat Warnings switches the electrical feed automatically. The installation and commissioning shall This means that if the temperature be done by a recognised installer. -
Page 22: Putting Out Of Operation
3.1.4 Putting out of operation Method of working: 1. For short periods: take the connector out of the stop contact or where there is a fixed connection switch off the mains switch. 2. In addition to the operations in point 1, for longer periods it is recommended to shut off the water feed pipe in connection with the danger of frost and once the device... -
Page 23: Warranty
A.O. Smith will replace or repair this part. f ) that the water pressure and/or heat load do not exceed the maximum values indicated on the boiler’s Tank Warranty identification plate;... -
Page 24: Exclusions
A.O. Smith other than the warranty given here. A.O. Smith will not be held liable for any damage to property or persons under Extent of the warranty the warranty given or in any other way... - Page 26 0310 145_R2...