ATTACK HYDRO COMBI 250 INOX stainless steel tank

30 years of development and manufacturing

ATTACK HYDRO COMBI 250 INOX stainless steel combination tank

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.

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Category: Domestic hot water tanks

200 + 50 lDHW and buffer capacity

Stainless steelMaterial

3 kWElectric heating element

Robot-weldedwith high precision

Discover ATTACK HYDRO COMBI 250 INOX stainless steel tanks

ATTACK HYDRO COMBI 250 INOX

The combination tank prepares domestic hot water and stores heating water in one appliance.

ATTACK HYDRO COMBI 250 INOX

Tank for heat pumps

Prepare domestic hot water (DHW) and store central-heating (CH) water in one tank. The lower 200 l section heats DHW; the upper 50 l section stores heating water. The large-area stainless steel heat exchanger has a surface area of 2.6 m² for efficient heat transfer. The integrated 3 kW electric element can heat water if the external heat source fails.

Suitable for heat pumps, with an optional electric element

ATTACK HYDRO COMBI stainless steel tank showing its inner cylinder and heat exchanger

ATTACK HYDRO COMBI 250 INOX

Protection and capacity

The tank is made of stainless steel. Its durable construction comes from the material and the fitted magnesium anode. Capacities range from 200 to 300 litres.

HYDRO COMBI INOX

Thermal insulation

The polyurethane insulating foam around the tank helps maintain water temperature over time. It keeps heat loss low and operating costs to a minimum.

For heat pumps

Two water volumes in one tank

ATTACK HYDRO COMBI combines a 200-litre domestic hot-water tank with a 50-litre central-heating buffer section. The large-area heat exchanger and connections are designed for integration with a heat-pump system.

Detailed schematic information

HYDRO COMBI connections and service points

The manufacturer’s diagram marks the heating-water, circulation and domestic hot-water connections, sensors, anode and drain points.

Technical diagram of the ATTACK HYDRO COMBI tank with marked connections

Komponent 1 / 14

Central-heating flow connection G 1½″

Position 1: heating-water flow connection.

Komponent 2 / 14

Circulation inlet G 1½″

Position 2: circulation branch inlet.

Komponent 3 / 14

Central-heating inlet G 1″

Position 3: heating-water inlet.

Komponent 4 / 14

Central-heating outlet G 1″

Position 4: heating-water outlet.

Komponent 5 / 14

Circulation outlet G 1½″

Position 5: circulation branch outlet.

Komponent 6 / 14

Central-heating return G 1½″

Position 6: heating-water return connection.

Komponent 7 / 14

Water drain G ¾″

Position 7: water drain.

Komponent 8 / 14

Hot-water outlet G 1½″

Position 8: domestic hot-water outlet.

Komponent 9 / 14

Temperature sensor G ½″

Position 9: temperature sensor connection.

Komponent 10 / 14

Anode G ¾″

Position 10: anode connection.

Komponent 11 / 14

Temperature sensor G ½″

Position 11: temperature sensor connection.

Komponent 12 / 14

Cold-water inlet G 1½″

Position 12: cold-water inlet.

Komponent 13 / 14

Water drain G ¾″

Position 13: water drain.

Komponent 14 / 14

Circulation outlet G 1″

Position 14: circulation branch outlet.

Detailed specifications

Technical data

The Slovak product page shows a general 200/300 l figure and an AK INOX technical table. This page lists only the data in the HYDRO COMBI description: 200 l domestic hot water, 50 l buffer capacity, a 2.6 m² heat exchanger, a 3 kW electric element and 50 mm insulation.

Parameter	Unit	HYDRO COMBI 250 INOX
Domestic hot-water tank capacity	l	200
Central-heating buffer capacity	l	50
Stainless steel heat-exchanger area	m²	2.6
Electric element output	kW	3
Polyurethane insulation thickness	mm	50

Product materials

Download documents

ATTACK INOX stainless steel tank operating manual PDF · Slovak ATTACK HYDRO COMBI INOX energy label PDF · Slovak Technical data PDF

Customer service

Installation support

ATTACK service partners provide expert help with installation and throughout operation. Contact an expert partner for help designing the system connection.

Service support