ATTACK TUV and TUVS buffer tanks with a flow-through heat exchanger

30 years of development and manufacturing

ATTACK TUV / TUVS buffer tanks

Heat storage with on-demand domestic hot water heating.

The ATTACK TUV and TUVS tanks heat domestic hot water on demand through a stainless-steel coil. TUVS also includes a lower heat exchanger for an additional heat source. Actual model capacities range from 474 to 1,960 litres.

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Category: Buffer tanks

474–1,960 lActual capacity

4.54 m²DHW heat exchanger

Integratedtank

Robot-weldedHigh-precision welding

Buffer tanks suited to wood boilers

Store heat for when the system needs it

Choose the version based on whether you need heating-water storage only or also a solar circuit.

ATTACK TUV / TUVS

Buffer tank

The ATTACK TUV and TUVS buffer tanks are available in capacities from 474 to 1,960 litres and can be fitted with an electric heating element. Their stainless-steel coil heats domestic hot water quickly for comfortable, efficient use.

ATTACK TUV

TUV buffer tank

Buffer tank with a stainless-steel coil for on-demand domestic hot water heating.

ATTACK TUVS

TUVS buffer tank

Tank with on-demand domestic hot water heating and a lower heat exchanger for an additional heat source.

On-demand domestic hot water heating

Hot water is heated as it is drawn

The TUV and TUVS tanks store heat in the heating water. As domestic hot water is drawn, it is heated as it passes through a stainless-steel coil. The tank can also be fitted with an electric heating element.

Cutaway of the ATTACK TUV tank with a stainless-steel coil for domestic hot water heating

Heating system with a buffer tank

System combinations

The tank can be integrated into a system with different heat sources and heating circuits.

Buffer tank combined with different heat sources and heating circuits

Different heating options

A buffer tank can be combined with different heating sources, such as electric heating, solar systems, or heat pumps. It can also be used with radiators or underfloor heating.

Buffer-tank insulation in a heating system

Thermal insulation

To help the buffer tank retain heat for as long as possible, every tank is supplied with a soft, removable insulation layer included in the price. The **100 mm** insulation consists of polyester fibre with a durable imitation-leather cover. It is fitted to the tank after installation and helps reduce heat loss.

Robot welding during manufacture of ATTACK tanks

Manufacturing

Precision robot welding

The manufacturer highlights robot welding, quality materials, and its own manufacturing processes.

Connection diagram details

TUV/TUVS connections and dimensions

The diagram shows the TUV tank on the left and TUVS on the right. Select a numbered marker or abbreviation for details about a connection or dimension.

Connection and dimension diagram for ATTACK TUV and TUVS tanks

Komponent 1 / 16

Boiler flow connection

Connection 1 is the boiler flow connection and measures 1½″.

Komponent 2 / 16

Unused connection

Connection 2 is available for use and measures 1½″.

Komponent 3 / 16

Electric immersion heater (EL)

Connection 3 (EL) is for an electric immersion heater and measures 1½″.

Komponent 4 / 16

Unused connection

Connection 4 is available for use and measures 1½″.

Komponent 5 / 16

Heating-circuit return

Connection 5 is the heating-circuit return and measures 1½″.

Komponent 6 / 16

Radiator-circuit flow

Connection 6 is the heating-circuit flow for radiators and measures 1½″.

Komponent 7 / 16

Underfloor-heating circuit flow

Connection 7 is the heating-circuit flow for underfloor heating and measures 1½″.

Komponent 8 / 16

Gas, oil, or pellet boiler return

Connection 8 is the return for a gas, oil, or pellet boiler and measures 1½″.

Komponent 9 / 16

Wood-boiler return

Connection 9 is the wood-boiler return and measures 1½″.

Komponent 10 / 16

Solar-system or heating sensor

Markers 10 show the positions for a solar-system or heating sensor; the connection measures ½″.

Komponent AS / 16

Solar-system flow connection

The AS connection is the solar-system flow and measures 1″.

Komponent RS / 16

Solar-system return connection

The RS connection is the solar-system return and measures 1″.

Komponent D1 / 16

Diameter without insulation

D1 indicates the tank diameter without insulation. The exact dimension depends on the model.

Komponent D2 / 16

Diameter with insulation

D2 indicates the tank diameter with insulation. The exact dimension depends on the model.

Komponent AF / 16

Cold potable water inlet

The AF connection is the cold potable water inlet and measures 1¼″.

Komponent AC / 16

Domestic hot water outlet

The AC connection is the domestic hot water outlet and measures 1¼″.

Detailed specifications

Technical data

The table lists model dimensions, connections, and specifications from the ATTACK technical catalogue.

Parameter	Unit	TUV 500 K	TUV 600 K	TUV 800 K	TUV 1000 K	TUVS 500 K	TUVS 600 K	TUVS 800 K	TUVS 1000 K	TUVS 1250 K	TUVS 1500 K	TUVS 2000 K
Position 1–6	mm	1,405	1,515	1,545	1,735	1,405	1,515	1,545	1,735	1,655	1,755	1,955
Position 2–7	mm	1,013	1,123	1,135	1,255	1,013	1,123	1,135	1,255	1,175	1,345	1,408
Position 3 (EL)	mm	771	794	846	1,036	771	794	846	1,036	988	1,072	1,314
L – maximum length of electric heating element	mm	600	650	735	735	600	650	735	735	880	920	1,000
Position 4–8	mm	621	684	725	775	621	684	725	775	695	820	862
Position 5–9	mm	230	245	315	295	230	245	315	295	285	375	315
RS position	mm	—	—	—	—	230	245	315	295	285	375	315
AS position	mm	—	—	—	—	710	725	725	860	850	895	843
Diameter without insulation	mm	650	700	790	790	650	700	790	790	950	1,000	1,100
Diameter with 100 mm insulation	mm	850	900	990	990	850	900	990	990	1,150	1,200	1,300
Height	mm	1,631	1,754	1,806	1,996	1,631	1,754	1,806	1,996	1,948	2,032	2,274
R – tilting dimension without insulation	mm	1,717	1,841	1,898	2,081	1,717	1,841	1,898	2,081	2,064	2,160	2,390
Minimum installation height	mm	1,831	1,954	2,006	2,196	1,831	1,954	2,006	2,196	2,148	2,232	2,474
Maximum operating temperature	°C	95	95	95	95	95	95	95	95	95	95	95
Maximum operating pressure	bar	3	3	3	3	3	3	3	3	3	3	3
Domestic hot water heat-exchanger area	m²	4.54	4.54	4.54	4.54	4.54	4.54	4.54	4.54	4.54	4.54	4.54
Solar heat-exchanger area	m²	—	—	—	—	1.8	1.8	2.4	3	3	3.6	4.2
Solar heat-exchanger volume	l	—	—	—	—	11.9	11.9	15.9	19.8	19.8	19.8	23.7
Maximum operating pressure of solar heat exchanger	bar	—	—	—	—	10	10	10	10	10	10	10
Maximum operating temperature of solar heat exchanger	°C	—	—	—	—	105	105	105	105	105	105	105
Tank volume	l	474	605	713	891	474	605	713	891	1,239	1,420	1,960
Weight	kg	157	157	157	172	157	157	157	172	172	265	296