Print this page as PDF

Send this page via e-mail

Add it to Favorites

Share OSO Hotwater on Twitter

Share OSO Hotwater on Facebook

Share this page with others

OSO Super Expansion - SE

  - Fully integrated expansion vessel with all connections hidden.

The Super Expansion is the ultimate direct electric hot water cylinder, with distinctive design features. The unique, factory fitted and integrated expansion solution drastically reduces installation time. All connections hidden makes the Super Expansion fit seamlessly in every environment. Based on OSO’s experience through 80 years and with more than 3 million units sold, the Super series is the new benchmark.

The insulated, easily removable top lid hides the expansion solution as well as all connections to the cylinder. The factory fitted mixing valve provides adjustable hot water temperature, non-return and stop valve. Duplex stainless steel makes the Super series extremely lightweight and space-efficient for easy handling and installation. Low heat loss is provided by OSO ECO Foam, with impressive key figures for GWP of 1 (Global Warming Potential) and ODP of 1 (Ozone Depletion Potential.) Integrated, adjustable feet, as well as channels for drainpipe and electric connection. Installation time is drastically reduced due to factory fitted components.


The Super Expansion heats up to 70°C, with water then blended down when drawn off, increasing available hot water compared to others.

Key advantages:

  • Pioneering design features with all connections hidden and insulated
  • Duplex stainless steel for lightweight handling and aggressive environments
  • Fully integrated and factory fitted expansion solution
  • 10 year warranty on the stainless steel inner cylinder & OSO ECO Foam insulation
Super Standard - S
Super Xpress - SX
Technical Specifications
Quick Facts
Choose volume

Super Expansion is available in 1 volume, suitable for the no. of people designated in the table below. The table is based on experience from average hot water usage in a normal household. If the household has a large hotwater usage, for instance due to large bathtubs, steamshowers etc., one should choose another product series, such as the Super Standard. Hotwater capacity is calculated by instant tapping at 40°C. At 40°C a normal shower uses approx. 60 l., bathtubs 180 l. and bubblebaths 400 l.



Prod. nr. Product description Capacity Hot water - 40°C Hot Water / hour - 40°C Heat-up Time - 15 - 75°C: Heat loss - 24 hours Dia x H mm. Weight
8000516 Super Expansion SE 200 - 1,95 kW/1x230V 3,5 pers. 370 l. 55 l./hr. 7,0 hrs. 1,90 kWh ø580x1300 41
Product Data Sheet
  - click to expand   - click to collapse
Direct Electric Unit Type
Product Super Expansion SE 200
Product No. OSO no. 8,000,516
Product Capacity Persons 4,0
Product Segment   Domestic
Weight - Net kg 39
Height - Max mm. 1300
Diameter mm. 580
Volume - Actual ltr. 197
Usable hot water draw off at 40°C (ltr) ltr. 370
Hot Water / hour at 40°C (ltr) ltr. 85
Heat Up Time - 15°C - max Temp. hours 4.6
Standing Heat Loss - 24 hours kWh/24 hours 1.90
Dimensions - Cardboard Box LxWxH mm. 595x595x1305
Volume - Cardboard Box 0.46
Inner Cylinder Stainless Steel Duplex
Electric Element(s) Stainless Steel Incoloy 825
Electric Box and Lid(s) Plastic V0 Plastic
Insulation PUR ECO Foam
Outer Casing Steel Epoxy Coated
Energy Source
Type - Primary   Electric
Immersion Heater - Capacity kW 3.0
Immersion Heater - Phase Phase 1
Immersion Heater - Voltage Volt 230
Thermostat Type   Surface
Working Thermostat - Temperature Range °C 60-90
Working Thermostat - Set Temperature °C 75
Electrical Installation   Regulations
IP Classification   IP 21
Cold Feed / Hot Water Draw Off Location Top
Cold Feed / Hot Water Draw Off Compression 15mm
Safety Valve (Drain Connection) " (inches) Use Overflow
Safety Valve (Overflow Connection) " (inches) 3/4 - Female
P&T Valve " (inches) -
Secondary Return / Hot Water w/o mixing " (inches) -
Immersion Heater(s) " (inches) 5/4
Safety Valve - Opening Pressure +/- 5 % Bar 9
P&T Valve - Opening Pressure/Temp. Bar/°C -
Safety Thermostat - Cut-out Temp. °C 98
Inner Cylinder - Design Pressure /Temp. Bar/°C 10/99
Certifications / Approvals
Product Certifications Certificates CE / NEMKO / KIWA / WRAS
Manufacturing Plant Approvals Standards ISO 9001:2008 / ISO 14001:2008 / OHSAS 18001
Environmental Declaration 100 % Recyclable / >60 % Recycled Materials / ODP of 0 / GWP of 1
Warranty - Water Quality EN 98/83EC
Water - Chloride Content Max - Cl ppm 250
Water - Sulphate Content Max - So4 ppm 250
Water - Chloride/Sulphate Content Max ppm 250
Warranty Period - Inner Cylinder / Parts Years 10 / 2