Product Overview & Application Area
The Vaillant actoSTOR VIH QL 75/2 B is a compact, wall-mounted hot water stratified storage tank with a nominal capacity of 72 liters. It was developed for central domestic hot water preparation and is technically and visually matched to the Vaillant gas condensing boiler ecoTEC plus VCW 1-5 with integrated hot water preparation.
With its dimensions of 720 × 440 × 440 mm, the storage tank is particularly suitable for smaller households and installation situations with limited space. For system planning, versions for left-hand and right-hand installation are available.
Technology & Equipment
The ActoNomic stratified loading process introduces heated water specifically into the upper storage area. This makes usable hot water available before the entire storage content is fully heated. The hot water output rate is 170 liters in 10 minutes, the continuous hot water output is 1,194 liters per hour, and the performance rating is NL 1.5.
The storage tank is made of enamelled steel and is additionally protected against corrosion by a magnesium sacrificial anode. The current ErP product data sheet indicates energy efficiency class B, a standby heat loss of 34.2 W, and a storage volume of 72 liters.
Everyday Benefits
Stratified loading enables rapid provision of hot water and uses the available storage volume particularly effectively. Compared to conventional storage tanks of comparable volume, the system can achieve up to 50 percent higher hot water output.
The wall-mounted design keeps the floor area clear and supports compact installation. Thanks to the design matched to Vaillant system components, the storage tank can be arranged visually uniformly next to the heat generator.
System Integration & Compatibility
The actoSTOR VIH QL 75/2 B is primarily intended for combination with the Vaillant ecoTEC plus VCW 1-5. Domestic hot water generation is controlled by the connected heat generator and its controller; the cylinder has no independent heat source intended for the operator.
The heating-side flow and return connections as well as the cold and hot water connections are each designed in R 3/4 inch. The required installation variant must be selected as left-hand or right-hand installation to suit the planned pipe routing. Other system combinations must be checked technically in advance.
Technical data at a glance
| Manufacturer | Vaillant |
| Cylinder type | Wall-mounted domestic hot water cylinder with stratified charging |
| Cylinder volume | 72 l |
| Suitable for drinking water | Yes |
| Storage tank | Enamelled steel with magnesium sacrificial anode |
| Max. hot water temperature | 75 °C |
| Max. operating pressure | 10 bar |
| Dimensions H × W × D | 720 × 440 × 440 mm |
| Empty weight | 38 kg |
Installation
Installation, hydraulic connection, commissioning, maintenance and repair must be carried out by appropriately qualified specialists. The wall and the mounting structure used must be suitable for the operating weight of 110 kg as well as the local installation conditions.
Before installation, the article number, connection side, ordered installation variant and pipe routing must be checked. The cylinder and pipes must be completely filled, vented and checked for leaks before commissioning.
Notes
The cylinder only works in conjunction with a suitable heat generator. The actually achievable hot water output therefore also depends on the output, setting and operating mode of the connected heating appliance.
The maximum operating pressure of 10 bar and the maximum hot water temperature of 75 °C must not be exceeded. Safety valves, expansion volume, drinking water installation and scald protection must be designed according to the system. Connection sets, pipe claddings and other accessories are only considered included if they are expressly listed in the order confirmation or delivery documents.
Scope of delivery
- 1 Vaillant actoSTOR VIH QL 75/2 B hot water stratified loading cylinder in the selected installation variant