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Drazice

Hygienic storage tank 1000 liters with insulation & heat exchanger 25 liters

Hygienic storage tank 1000 liters with insulation & heat exchanger 25 liters

Regular price €3.287,00 EUR
Regular price Sale price €3.287,00 EUR
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1000-liter hygienic storage tank with insulation & 25-liter heat exchanger

Intelligent heat storage for maximum energy efficiency: The Drazice NADO V11 hot water storage tanks combine two functions in one system – a buffer tank for heating water and hot water preparation with an integrated stainless steel tank. Perfect for combining multiple heat sources such as solid fuel boilers, heat pumps, solar thermal systems, and wood-burning stoves.

Your advantages at a glance

  • Dual function: Buffer tank + hot water preparation in one unit
  • Flexible application: Can be combined with solid fuel boilers, heat pumps, solar thermal systems, and more. Fireplace
  • Stainless steel inner tank: 20-25 liter rust-free tank for hygienic drinking water
  • Optimal boiler operation: Stores excess heat with maximum efficiency
  • High-quality insulation: 80 mm thick, removable thermal insulation
  • 4 sizes available: 300L, 500L, 750L and 1000L for every need

Functionality & Applications

Buffer storage function

The NADO V11 hot water storage tank stores excess heat from your heating source – be it a solid fuel boiler, wood gasifier, heat pump or solar thermal system. This intelligent intermediate storage enables:

  • Optimal boiler operation: The boiler always operates within the optimal temperature range with maximum efficiency
  • Energy storage: Excess heat is stored instead of being wasted
  • Longer combustion intervals: Less frequent refueling is required with solid fuel boilers
  • Hydraulic separator: Optimal integration of different heating circuits

Domestic hot water preparation

The integrated 20-25 liter stainless steel tank enables direct domestic hot water heating or preheating:

  • With solid fuel boiler: Direct heating to target temperature is possible
  • With solar/heat pump: Preheating of the water, Reheating via electric heating element possible
  • Stainless steel inner tank: Hygienically perfect drinking water quality
  • Flexibly expandable: Combination with an additional hot water storage tank possible

Technical equipment

Construction & Construction
  • Main tank: Steel, exterior with protective coating
  • Inner tank: 20-25 liters stainless steel for drinking water
  • Tube heat exchanger: Integrated for optimal heat transfer
  • Insulation: 80 mm rigid polyurethane foam, removable for maintenance
  • Connections: 2x G1½" pipe connections for hot water preparation
  • Optional: Mounting for electric heating element TJ6/4"

Available Sizes

Model Buffer Tank Volume Stainless Steel Inner Tank Ideal for
NADO V11 300 300 Liters 20 Liters 2-4 Persons, Small Single-Family Homes
NADO V11 500 500 Liters 25 Liters 3-5 Persons, Single-Family Homes
NADO V11 750 750 liters 25 liters 4-6 people, large single-family homes
NADO V11 1000 1000 liters 25 liters Multi-family homes, commercial properties

Typical application examples

1. Combination with solid fuel boiler Optimal solution for wood, pellet, or coal heating: Boiler operates in its optimal power range with maximum efficiency Excess heat is temporarily stored in the buffer tank Direct hot water preparation is possible in the stainless steel tank Less frequent refueling required Ideal for log boilers and wood gasifiers 2. Combination with a solar thermal system Maximum solar utilization through heat storage: Storage of solar heat for later use Preheating of domestic hot water in a stainless steel tank Re-heating via electric immersion heater or a second heat source Up to 60% energy savings in summer 3. Combination with a heat pump Efficient buffer storage for heat pumps: Reduces heat pump cycling Stores heat when electricity prices are low (Smart Grid) Domestic hot water preheating possible Optimized system hydraulics 4. Hybrid systems (multiple heat sources) Maximum flexibility through combination: For example: Solid fuel boiler + solar thermal system Or: Heat pump + wood-burning stove with water jacket Or: Pellet boiler + solar thermal system Intelligent use of all available energy sources Special advantages of solid fuel boilers The NADO V11 hot water storage tank is the ideal complement to solid fuel boilers (wood, pellets, coal): Optimal combustion: The boiler can run continuously at the ideal temperature and maximum efficiency Longer burn time: The stored heat bridges periods without active boiler operation Reduced emissions: Optimal combustion reduces pollutants minimized
  • Comfort gain: Less frequent refueling required, especially at night
  • Boiler protection: Prevents overheating and protects the boiler
  • Longer lifespan: Boiler operates within its ideal operating range
  • Installation & Expansion Options

    Electric Heating Element (Optional)

    The NADO V11 can be retrofitted with a TJ 6/4" electric heating element:

    • For additional domestic hot water heating
    • Ideal for solar or heat pump combinations
    • Independent hot water preparation in summer
    • Easy retrofitting possible

    Combination with external hot water storage tank

    For higher hot water demand, the NADO can serve as a preheating stage:

    • Preheating in the NADO stainless steel tank (20-25L)
    • Postheating in a separate hot water storage tank
    • Maximum energy efficiency through cascade use
    • Particularly useful when Solar/Heat Pump Systems

      General Technical Data

      Available Volumes: 300L, 500L, 750L, 1000L
      Main Tank: Steel with protective coating (exterior), uncoated (interior)
      Inner Tank (Domestic Hot Water): 20-25L stainless steel Stainless steel Heat exchanger: Steel tubular heat exchanger Insulation: 80 mm rigid polyurethane foam, removable Domestic hot water connections: 2 x G1½" Optional: Electric heating element TJ 6/4" Max. operating pressure: 6 bar (buffer tank) Max. Temperature: 95°C

      Energy efficiency & cost savings

      The NADO V11 hygienic storage tank contributes significantly to the energy efficiency of your heating system:

      • Boiler efficiency: Up to 15% higher efficiency thanks to optimal operating point
      • Reduced fuel costs: Less consumption
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    • PRODUCT SAFETY

      Družstevní závody Dražice-strojírna s.r.o.
      Dražice 69, 294 71 Benátky nad Jizerou
      Czech Republic
      Tel.: +420 326 370 911
      Email: info@dzd.cz