•

Drazice

800 liter buffer storage tank with 140 liter solar coil & insulation – for heating and solar

SKU 1218803291
€1.718,64
€1.718,64

Drazice

800 liter buffer storage tank with 140 liter solar coil & insulation – for heating and solar

SKU 1218803291
€1.718,64
800 liter buffer storage tank with 140 liter solar coil & insulation – for heating and solar

Wird oft gemeinsam gekauft

Gesamtpreis€1.788,88

Produktbeschreibung

800-liter buffer tank with 140-liter solar coil & insulation

 

Type: NADOS 800/140 v2

 

High-efficiency buffer tank for maximum heat storage: The Drazice NADOS 800 is a professional buffer tank with an 800-liter capacity and an integrated 140-liter inner tank for domestic hot water preparation. Ideal for solid fuel boilers, heat pumps, solar thermal systems, and hybrid heating systems – stores excess heat and ensures maximum energy efficiency. Highlights Your advantages at a glance 800-liter buffer volume: Large heat storage capacity for optimal system efficiency 140-liter inner tank: Enamelled tank for hygienic hot water preparation 1.5 m² tube heat exchanger: Efficient heat transfer for solar thermal systems Auxiliary heating Optimized for solid fuel: Stores excess boiler heat with maximum efficiency 80 mm insulation: Removable thermal insulation for minimal heat loss Multifunctional: Can be combined with boiler, solar, heat pump & fireplace Optimized for solid fuel: Stores excess boiler heat with maximum efficiency 80 mm insulation: Removable thermal insulation for minimal heat loss Multifunctional: Can be combined with boiler, solar thermal system, heat pump & fireplace ... Areas of Application

Buffer Storage Function (800 Liters)

The NADOS 800 primarily serves to store excess heat from various sources:

  • Solid Fuel Boiler: Stores excess heat and enables optimal boiler operation at favorable temperatures
  • Heat Pump: Reduces cycling, stores heat when electricity prices are low
  • Solar System: Stores free solar energy for later use
  • Wood Stove with Water Jacket: Utilizes fireplace heat for the heating system
  • Hybrid Systems: Intelligently combines multiple heat sources

Domestic Hot Water Preparation (140 Liters Enamelled)

The integrated 140-liter inner tank enables domestic hot water heating:

  • With boiler: Direct heating to target temperature (e.g., 60°C) possible
  • With solar/heat pump: Preheating of the water, reheating via electric immersion heater recommended
  • Enameled tank: High-quality corrosion protection according to DIN 4753
  • Expandable: Optionally retrofittable with TJ 6/4" electric immersion heater

Technical Specifications

Buffer tank volume: 800 Liters
Inner tank (hot water): 140 liters, enamelled
Tube heat exchanger: 1.5 m² heat exchanger surface
Insulation: 80 mm rigid polyurethane foam, removable
Main tank: Steel, exterior with protective coating
Inner surface: Untreated (buffer), enamelled (DHW tank)
Max. operating pressure: 6 bar (buffer tank)
Max. temperature: 95°C
Optional: Electric heating element TJ 6/4" retrofittable

Ideal for

  • Large single-family homes with high heating demand
  • Two-family homes
  • Solid fuel boilers (wood, pellets, Firewood)
  • Heat pump systems with buffer storage requirements
  • Solar thermal systems (10-20 m² collector area)
  • Wood-burning stoves with water jacket
  • Hybrid heating systems with multiple heat sources

Special advantages of solid fuel boilers

The NADOS 800 is the perfect complement to any solid fuel boiler:

  • Maximum efficiency: The boiler operates continuously within the optimal temperature range (70-90°C)
  • Utilize excess heat: No energy waste – excess heat is stored instead of released
  • Longer heating intervals: Stored heat bridges periods without active boiler operation
  • Reduced emissions: Optimal combustion reduces pollutants by up to 30%
  • Increased comfort: Less frequent refueling required, especially at night
  • Boiler protection: Prevents overheating and creosote buildup
  • Longer service life: Protects the boiler through ideal operating conditions

Application with solar & Heat pump

Solar system (preheating)

The integrated tube heat exchanger (1.5 m²) allows for the integration of a solar system:

  • Free solar energy: Preheating of domestic hot water in the 140L tank
  • Replacement heating required: Electric immersion heater TJ 6/4" recommended for target temperature
  • Up to 60% savings: In summer, solar can cover the majority of hot water demand
  • Optimally sized: For solar systems with 10-20 m² collector area

Heat pump (preheating)

In heat pump systems, the NADOS serves as a buffer storage tank and Preheating stage:

  • Reduced cycling: Longer run times increase heat pump efficiency
  • Smart Grid Ready: Stores heat when electricity prices are low
  • DHW preheating: Reheating to target temperature via electric heating element
  • Hydraulic separator: Optimal system integration

Domestic hot water preparation – 140L enamelled inner tank

Important note: The NADOS is NOT a standalone hot water storage tank – the 140L inner tank is used for domestic hot water heating or preheating in combination with the heating system.

Direct heating (with Boiler)

  • ✓ Connection to solid fuel boiler, gas or oil boiler
  • ✓ Direct heating to 60°C possible
  • ✓ Sufficient for a 4-6 person household
  • ✓ Enamelled tank prevents corrosion

Preheating + post-heating (solar/heat pump)

  • ⚠ Preheating to approx. 35-45°C
  • ✓ Post-heating via electric immersion heater TJ 6/4" recommended
  • ✓ Or combination with a separate electric hot water storage tank
  • ✓ Maximum energy efficiency through cascade use

Installation & Extensions

Standard Equipment

  • 800L steel buffer tank
  • 140L enamelled inner tank for hot water
  • 1.5 m² tube heat exchanger
  • 80 mm removable PU insulation
  • External protective coating
  • Multiple connections for heating circuits

Optional Extensions

  • Electric heating element TJ 6/4: For supplementary heating with solar/heat pump
  • Additional hot water storage tank: For higher hot water demand as a preheating stage
  • Control technology: For intelligent heat management
  • Safety group: According to EN 1487 required

Important Installation Instructions

  • Installation by qualified personnel only
  • Expansion vessel required for heating circuit
  • Minimum distance to wall: 50 cm (for maintenance)
  • Frost-free installation location required
  • 80 mm insulation is removable for maintenance work

Typical System Configurations

Configuration 1: Log boiler + NADOS 800

  • Boiler heats at full load (highest efficiency)
  • Excess heat is stored in the 800L buffer tank
  • Hot water is heated directly in the 140L inner tank heated
  • Heating continues to run even after the boiler shuts down
  • ✓ Optimal solution for wood heating

Configuration 2: Solar + NADOS 800 + electric immersion heater

  • Solar system (10-15 m²) heats buffer tank
  • Domestic hot water is preheated in the 140L inner tank (solar)
  • Electric immersion heater TJ 6/4" ensures target temperature
  • In summer: up to 70% solar covered
  • In winter: automatic reheating
  • ✓ Maximum solar utilization

Configuration 3: Heat pump + NADOS 800

  • Heat pump charges 800L buffer tank Reduced cycling increases efficiency DHW preheating in the 140L tank Optional: Electric heating element for higher temperatures ✓ Optimal for low flow temperatures
Configuration 4: Hybrid (boiler + solar + fireplace)
    Main heating: Pellet boiler or gas boiler Solar: Summer support Wood-burning stove with water jacket: Additional heat NADOS 800: Central storage of all sources ✓ Maximum flexibility and independence
Drazice Quality – Made in Europe Drazice is one of the leading European manufacturers of hot water storage tanks with over 70 years of experience. The NADOS 800 is manufactured to the highest quality standards:

  • Precision manufacturing: All welds are tested and certified
  • Enameled inner tank: Compliant with DIN 4753-3 for a long service life
  • Corrosion protection: Protective coating on the outside prevents rust
  • CE marking: Meets all EU standards
  • Durable: 15+ years of service life with professional installation

Scope of delivery

    ✓ NADOS 800 buffer tank (800L)
  • ✓ 140L enamelled inner tank Integrated ✓ 1.5 m² tubular heat exchanger ✓ 80 mm removable PU insulation ✓ Assembly and installation instructions ✓ Manufacturer's warranty

Not included: Electric heating element TJ 6/4" (available separately), safety group, expansion vessel

Warranty & Service

  • 2-year manufacturer's warranty on materials and workmanship
  • 5-year warranty on the enamelled inner tank (with professional installation)
  • Spare parts available long-term
  • Technical support by qualified personnel

Important Notes

⚠ This buffer tank is NOT intended for domestic hot water storage only!

The NADOS 800 is primarily a buffer tank for heating water. The 140L inner tank is used for domestic hot water heating in combination with the heating system – not as a standalone hot water storage tank.

  • Installation by a qualified professional only
  • Hydraulic integration according to manufacturer's specifications
  • Safety group according to EN 1487 required
  • Expansion vessel for heating circuit necessary
  • Regular maintenance recommended

Invest in maximum heating efficiency: The NADOS 800 is the professional solution for demanding Heating systems with high heat demand. Make optimal use of every watt of your heating system – with the Drazice NADOS 800. Order now and benefit from fast shipping!

Häufig gestellte Fragen

Kunden kauften auch diese Produkte

    Charge ServiceAssistance

    • Easy shipping

      Ship Easy, Pay Securely!

      Fast ship, safe pay, easy shop, sure joy!

    • Easy returns

      No-Stress Returns!

      Easy exchanges up to 30 days!

    • KOSTENLOSER VERSAND

      Kostenlos für Bestellungen ab 5000€

    • 24/7 Support

      schnelle und professionelle Unterstützung

    • WÄHLEN SIE DAS LIEFERDATUM

      Flexible Liefertermine

    • VERLÄNGERTE RÜCKGABE
      21-tägiges Rückgaberecht