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OSO 20 Series

  - 330/380 litre indirect unvented cylinder

The 20 series cylinders come standard with 1” hot and cold connections for high flow rates. The 20 Series has large heating coils for fast heating times, and low heat loss due to the OSO ECO Foam insulation. Dedicated secondary return and a 25 year cylinder guarantee.

The 20 Series has large heating coils for fast heating times. Heat loss is restricted by OSO ECO Foam insulation. 20 series cylinders with 1” hot and cold connections are ideal where high water flow rates are required. The 20 Series are the key component in the OSO Superstream system, providing dramatically boosted flow rates available to the hot and cold water taps by supplementing the mains flow rate with stored water in an accumulator.

  

Large capacity heating coils give fast heat up time & recovery, and heat loss is restricted by OSO ECO Foam. External expansion vessel is supplied as standard.

Key advantages:

  • Large heating coils for fast heating tmes.
  • 1” hit and cold connections for larger households.
  • OSO ECO Foam insulation and 25 year guarantee.
Solarcyl Twin Coil RI TC
Slimline RI
Technical Specifications
Quick Facts
Choose volume

20 Series is available in 3 different volumes, estimated to be suitable for the no. of people designated in the table below. The table shows suitable volumes 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 higher volume than designated in the table. 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. Capacity is also dependant upon the heat source's size and performance.

 

 

 
Prod. nr. Product description Capacity Hot water - 40°C Heat-up (best) - 15°C - max. Recovery (best) - after 75% Heat loss - 24 hours Dia x H mm. Weight
1 324 520 20 Series RI F1 250 - 3 kW/1x240V + coil 0,9m² 5-6 pers. 397 ltr. 36 min. 27 min. 1,95 kWh ø580x1400 56 kg.
1 324 620 20 Series RI F1 300 - 3 kW/1x240V + coil 0,9m² 6-7 pers. 475 ltr. 43 min. 33 min. 2,19 kWh ø580x1600 68 kg.
1 324 770 20 Series RI F1 380 - 3 kW/1x240V + coil 0,9m² 7-8 pers. 590 ltr. 54 min. 40 min. 2,55 kWh ø580x2010 91 kg.
       
Product Data Sheet
  - click to expand   - click to collapse
 
Direct Electric Unit Type Type Type  
Product 20 Series RI F1 250 RI F1 300 RI F1 380  
Produkt No. OSO no. 1 324 520 1 324 620 1 324 770  
Product Capacity Persons 5-6 6-7 7-8  
Product Segment   Domestic Domestic Domestic  
Product Cost Estimate - Rating - £/££/£££ OSO Standard £££ £££ £££  
Product
Weight - Net kg 65 69 87  
Height - Max mm. 1400 1600 2010  
Diameter mm. 580 580 580  
Volume - Actual ltr. 245 290 375  
Usable hot water draw off at 40°C (ltr) ltr. 397 475 590  
Heat Up - 1 element - 15°C - max Temp. minutes 186 235 298  
Heat Up - 2 elements - 15°C - max Temp. minutes        
Heat Up - Coil(s) - 15°C - max Temp. minutes 36 43 54  
Recovery - 1 elements after 75% draw off minutes 130 165 253  
Recovery - 2 elements after 75% draw off minutes        
Recovery - Coil(s) - 15°C - max Temp. minutes 27 33 40  
Standing Heat Loss - 24 hours kWh/24 hours 1,95 2,19 2,55  
Expansion Solution   External External External  
Dimensions - Cardboard Box LxWxH mm. 585x585x1415 585x585x1620 625x625x2280  
Volume - Cardboard Box m³ 0.484 0.554 0.891  
Materials
Inner Cylinder Stainless Steel Duplex Duplex Duplex  
Coil(s) Stainless Steel Duplex Duplex Duplex  
Electric Element(s) Stainless Steel Incoloy 825 Incoloy 825 Incoloy 825  
Electric Box and Lid(s) Plastic V0 Plastic V0 Plastic V0 Plastic  
Insulation PUR ECO Foam ECO Foam ECO Foam  
Outer Casing Steel Epoxy Coated Epoxy Coated Epoxy Coated  
Energy Source
Type - Primary   El. / Gas / Oil El. / Gas / Oil El. / Gas / Oil  
Type - Secondary   - - -  
Temperature - Primary / Lower   High Temp. High Temp. High Temp.  
Temperature - Secundary / Upper   - - -  
Heating Coil(s)
Surface area - Primary / Lower m² 0,92 0,92 0,92  
Surface area - Secondary / Upper m² - - -  
Dedicated Volume ltr. High Temp. High Temp. High Temp.  
Recommended Flow Rate ltr./min. - - -  
Electric
Immersion Heater - Capacity kW 3 3 3  
Immersion Heater - Phase Phase 1 1 1  
Immersion Heater - Voltage Volt 240 240 240  
Thermostat Type   Surface Surface Surface  
Upper Working Thermostat - Temp. Range °C N/A N/A N/A  
Upper Working Thermostat - Set Temp. °C N/A N/A N/A  
Lower Working Thermostat - Temp. Range °C 40-70 40-70 40-70  
Lower Working Thermostat - Set Temp. °C 60 60 60  
Electrical Installation   IEEE regs IEEE regs IEEE regs  
IP Classification   IP 24 IP 24 IP 24  
Connections
Cold Feed / Balanced Cold / Hot Water " (inches) 1 - Female 1 - Female 1 - Female  
Pressure Reducing Valve " (inches) 1 - Female 1 - Female 1 - Female  
Safety Valve " (inches) 1/2 - Male 1/2 - Male 1/2 - Male  
P&T Valve (factory fitted) " (inches) 1/2 - Male 1/2 - Male 1/2 - Male  
Drain Valve " (inches) 1 - Female 1 - Female 1 - Female  
Secondary Return   Use T-piece Use T-piece Use T-piece  
Immersion Heater(s) (factory fitted) " (inches) 5/4 - Male 5/4 - Male 5/4 - Male  
Expansion Vessel   External External External  
Primary Flow / Return " (inches) 3/4 - Female 3/4 - Female 3/4 - Female  
Secondary Flow / Return " (inches) - - -  
Sensor Connection " (inches) - - -  
Safety
Safety Valve - Opening Pressure +/- 5 % Bar 8 8 8  
P&T Valve - Opening Pressure/Temp. Bar/°C 10/90 10/90 10/90  
Safety Thermostat - Cut-out Temp. °C 85 85 85  
Inner Cylinder - Design Pressure /Temp. Bar/°C 10/99 10/99 10/99  
Coil(s) - Design Pressure Bar 50 50 50  
Certifications / Approvals
Product Certifications Certificates CE / KIWA / WRAS
Manufacturing Plant Approvals Standards ISO 9001:2008 / ISO 14001:2008 / OHSAS 18001
Environment
Environmental Declaration 100 % Recyclable / >60 % Recycled Materials / Ozone Depletion Potential of 0 / Global Warming Potential of 1
Warranty - Water Quality EN 98/83EC
Water - Chloride Content Max - Cl ppm 250 250 250  
Water - Sulphate Content Max - So4 ppm 250 250 250  
Water - Chloride/Sulphate Content Max ppm 250 250 250  
Warranty Period - Inner Cylinder / Parts Years 25 / 2 25 / 2 25 / 2