DRE
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Electric commercial water heater DRE - 52/80 Three phase electric water heater, primarily for commercial applications • Three to nine Incoloy-sheathed elements with a maximum rating of 54 kW • Each element is independently controlled via its own control thermostat (adjustable: 49 - 82°C) and a manually resetable high-limit thermostat • Cascade control of the elements for more efficient and faster heating-up times • All elements and thermostats are fuse-protected • PermaGlas Ultra Coat second-generation glass coating technology helps to prevent corrosion • Replaceable magnesium anode • Safety float switch • Optional ancillaries: Unvented kits • Destratification pump kit • Powered anodes • Alternate kW loadings

Installation diagrams 1 Pressure reducing valve 3 T&P valve 4 Stop valve 5 Non-return valve 6 Circulation pump 9 Drain valve 11 Service valve 14 Hot water tap 15 Expansion valve 16 Expansion vessel 17 Three way valve 18 Water cistern 19 Float valve A Cold water supply B Hot water outlet C Circulation pipe E Overflow pipe H Expansion pipe A.O. Smith unvented system kits utilise combination valves Further installation and connection details can be found in the Installation & Commissioning Manual.

Electrical diagrams 3 elements □E Color code cables (7) Black (2) Red (3) Blue (4) Brown © White COMPONANTS A Terminal block B Fuse C Relais D Fuse E Transformator F Safety relais G Float switch H Maximum thermostat K Control thermostat L Electrical element X1 Terminal block In the instruction manual you will find all the necessary information regarding connection, installation and maintenance of the product; including information on the electrical connections. Information regarding the recycling or disposal of the product can also be found in the manual. This manual is delivered with the...