Technology
Technical documentation
Specifications and requirements for installing Flow Loop
Here you will find the most important technical information about the Flow Loop shower. The page is aimed at professional stakeholders, consultants, installers, operations teams, and decision-makers who need a technical overview for assessment, planning, installation, or operation.
Flow Loop is developed for installation in professional and private shower facilities where documentation is needed on electricity, water connection, installation environment, water quality, dimensions, and mounting conditions.
Technical overview
Find the most important specifications
Here you will find key technical information about Flow Loop, including installation, water purification, safety, electricity, water connection, dimensions, and mounting conditions. Open the individual sections to see the relevant specifications.
Legal installation and use
The product is CE-marked.
In accordance with DS/HD 60364-7-701:2007 for electrical installations in wet rooms, the following applies:
- The shower and shower panel are approved for installation in Zone 1
- The power supply is approved for installation in Zone 2
Operating voltage
The internal operating voltage of the Flow Loop shower panel is:
24VDC
Water quality
The product meets the requirements for:
EU Excellent Bathing Water Quality 2006/7/EC
Water treatment in several steps
Flow Loop uses several purification steps to treat the shower water during recirculation.
Filter 1: Pre-filter 400 μm
Filter 2: Microfilter 10 μm
Filter 3: UV light, 253 nm log 4–6
The UV light removes approximately 99.99% of pathogenic bacteria.
Protection against untreated water in the shower
If the UV light fails, recirculation cannot be activated.
Protection against water overflow
Flow Loop’s drain grate is equipped with overflow protection.
Separation between drinking water and recirculated shower water
The drinking water supply is separated from the recirculated shower water by an air gap in accordance with EN1717.
Protection against scalding and unstable temperature
Safety and comfort comply with EN1111, sections 13.2–13.5.
Installation environment
The Flow Loop shower panel must not be installed in water, meaning wet room Zone 0. The product is therefore not suitable for installation in bathtubs, spas, or pools.
The shower panel may only be installed indoors and in frost-free rooms.
Electrical connection
The power supply is connected to:
180–264VAC
An earthed socket is not required. The power supply must be connected outside wet room Zones 0 and 1.
A cable is run between the power supply and shower panel:
24VDC / 10A
The internal voltage of the Flow Loop shower panel is:
24VDC
A separate switch is recommended, but not required. However, it must always be possible to disconnect and reconnect power to the shower panel, for example in connection with service and repair.
Energy consumption
Standby: 1.4 watts
In use: 166 watts
Water connection
Thread size for cold and hot water:
¾”
Water pressure
Recommended water pressure:
3–10 bar
300,000–1,000,000 Pa
Limit values:
Minimum 0.5 bar
Maximum 10 bar
Min. 50,000 Pa
Max. 1,000,000 Pa
Water flow
The cold and hot water connections must each have a flow of:
8–12 liters/minute
Supply temperature
Cold water, recommended: maximum 15°C
Hot water, minimum: 50°C
Hot water, recommended: 55°C
Water consumption during recirculation
Approx. 2 liters/minute
Floor requirements in the shower niche
It must be possible to build up a 6 mm water level at the shower panel’s intake unit, directly below the shower panel.
A slope of:
1–3%
is recommended.
Supported drain types
Flow Loop supports:
- Point drain with triangular grate
- Point drain with square grate
- Point drain with round grate
- Linear drain
A special Flow Loop drain grate is included.
Drain requirements in the shower niche
Flow Loop requires an individual drain for each shower.
There must be no shared water flow between multiple shower niches, as this would prevent control of the recirculation function.
Mounting
Flow Loop is wall-mounted on a vertical, flat wall.
The bracket is fixed with:
4 pcs. 5 mm screws with round heads
Weight
Dry weight: 38 kg
Wet weight during use: 46 kg
Installation time
Installation time: 2 hours
Can be installed by 1 person
Shower panel dimensions
Width: 45 cm
Height: 220 cm
Depth: 13 cm
Note:
Allow at least 10 cm of free space above the top and on both sides. This is necessary to enable installation and ensure access for cleaning around the panel.
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Recommendation
Flow Loop tested in hotel rooms with a focus on guest experience and operation
At Comwell Hotel Holte, Flow Loop was tested in real hotel rooms with a focus on installation, guest experience, cleaning, maintenance, and operational stability. The test showed that the showers could be integrated into the hotel’s daily operation, that guests rated the experience positively, and that the solution could support both comfort and resource savings.