Domestic hot water preparation

Domestic hot water tanks

ATTACK domestic hot water tanks for boilers, heat pumps and solar systems, available in steel and stainless steel.

30+ years of development and production

Product ranges

Model overview

Each model has its own applications, output range and design. Below is an overview of the main differences; full specifications and documents are available on each product page.

ATTACK PZO PLUS gas-fired water heaters with 80- and 120-litre capacities

Direct-fired water heater

ATTACK PZO PLUS

Independent gas-fired hot-water production.

This gas-fired water heater supplies hot water independently of the heating system. Piezo ignition allows it to operate without an electrical supply. The Slovak product page lists 80- and 120-litre capacities.

Capacity options
80 / 120 L
Low emissions
Low NOx
Operates without electricity
No electricity required
  • Operation without electricity
  • Temperature setting from 30 to 70 °C
  • Low-emission burner and flue protection
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ATTACK floor-standing indirect hot-water tank

Indirect domestic hot-water tank

ATTACK floor-standing tanks

Models for different heat sources and hot-water capacities

ATTACK floor-standing tanks connect to an external heat source to prepare domestic hot water (DHW). The range includes OKC, OKH, NTR and SOL models with one or two heat exchangers and nominal capacities from 40 to 300 litres.

Low emissions
Low NOx
Operates without electricity
No electricity
tank surface
Enamelled
  • OKC NTR
  • OKC NTRR/SOL
  • OKC NTR/HV
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ATTACK OKC wall-mounted indirect tank

Indirect domestic hot-water tank

ATTACK wall-mounted tanks

Wall-mounted tanks for domestic hot water

ATTACK wall-mounted tanks connect to an external heat source to prepare domestic hot water (DHW). The source page lists the OKC, OKCV, OKH, NTR and SOL types; its published technical table contains nine models with capacities from 120 to 195 litres.

heat sources
For different
Low emissions
Low NOx
Operates without electricity
No electricity
  • OKC vertical combination water heater
  • OKCV horizontal combination water heater
  • OKC/1 m² vertical combination tank
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ATTACK AK INOX stainless steel tanks in 50, 100 and 200 litre capacities

Stainless steel tank

ATTACK AK 50/100/200 INOX

Compact water storage for heat pumps.

AK INOX stainless steel tanks help maintain the required flow rate in a heat-pump heating circuit and store water for the defrost cycle. Available capacities are 50, 100 and 200 litres.

Capacity options
50–200 l
Heat loss
Low
with high precision
Robot-welded
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ATTACK Z 200/300 HP enamelled tank

Tank for heat pumps

ATTACK Z 200/300 HP

Two heat exchangers for a heat pump and an additional heat source.

This floor-standing enamelled tank is available in 200 and 300 litre capacities. The lower heat exchanger is designed for a heat pump; the upper one can serve an additional heat source.

Material
Enamelled
Heat loss
Low
pumps
For heat
  • Lower heat exchanger for the heat pump
  • Upper heat exchanger for an additional heat source
  • Enamel and active anode
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ATTACK Z HP INOX stainless steel tank

Stainless steel tank for heat pumps

ATTACK Z HP INOX

Large-area stainless steel heat exchanger for heat pumps.

The stainless steel tank for domestic hot water is available in 200 and 300 litre capacities. Its 2.6 m² heat exchanger is suitable for heat pumps; the electric element provides independent reheating.

Material
Stainless steel
Heat-exchanger area
2.6 m²
Electric heating element
3 kW
  • 2.6 m² heat exchanger
  • 3 kW electric reheating
  • 200 and 300 litre capacities
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ATTACK Z 200/300 SOL enamelled tank

Tank for solar systems

ATTACK Z 200/300 SOL

Two heat exchangers for a solar system and an auxiliary heat source.

The floor-standing enamelled tank has two heat exchangers and is designed for connection to a solar system and a condensing gas boiler or biomass boiler. It is available in 200 and 300 litre capacities.

Material
Enamelled steel
Heat loss
Low
For gas and biomass boilers
  • Connection to a solar system
  • 200 or 300 litre capacity
  • Enamelled coating and active anode
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ATTACK Z SOL INOX stainless steel tank

Stainless steel solar tank

ATTACK Z SOL INOX

Two heat exchangers for multiple heat sources.

The stainless steel tank is available in 200 and 300 litre capacities. Two heat exchangers allow a solar system and another hot-water heat source to be connected; the electric element provides independent reheating.

Material
Stainless steel
Heat-exchanger area
1.3 m²
Electric heating element
3 kW
  • Two heat exchangers for multiple heat sources
  • Stainless steel tank with an anode
  • 3 kW electric reheating
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ATTACK HYDRO COMBI 250 INOX stainless steel tank

Stainless steel combination tank

ATTACK HYDRO COMBI 250 INOX

Domestic hot water and heating water in one tank.

The tank combines a 200-litre domestic hot-water cylinder with a 50-litre heating-water buffer section. A large-area stainless steel heat exchanger and a 3 kW electric element support hot-water preparation.

DHW and buffer capacity
200 + 50 l
Material
Stainless steel
Electric heating element
3 kW
  • 200 litres for domestic hot water and 50 litres for heating
  • Large-area stainless steel heat exchanger
  • 3 kW electric reheating
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