1. Introduction
Thank you for choosing the Veito FLOW 7.5 kW Instant Water Heater. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new appliance. Please read these instructions carefully before installation and use, and keep them for future reference. Proper installation and adherence to these guidelines will ensure optimal performance and longevity of your water heater.

Figure 1: Front view of the Veito FLOW Instant Water Heater.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
- This appliance must be installed by a qualified electrician and plumber in accordance with all local and national electrical and plumbing codes.
- Ensure the electrical supply matches the appliance's requirements (7.5 kW). A dedicated circuit with appropriate wire gauge and circuit breaker is mandatory. Some installations may require a 6mm² wire, not 4mm², for safe operation. Consult a professional.
- Do not operate the water heater if it is damaged or malfunctioning. Disconnect power immediately.
- Do not block the water inlet or outlet. Ensure proper water flow to prevent overheating.
- This appliance is designed for heating water only. Do not use it for other purposes.
- Keep children and unauthorized persons away from the appliance during operation.
- The appliance features overheating protection. If activated, investigate the cause before resetting.
3. Specifications
| Feature | Specification |
|---|---|
| Brand | Veito |
| Model Number | FLOW |
| Power (Wattage) | 7.5 kW |
| Item Weight | 3 kg |
| Product Dimensions (L x W x H) | 23.5 x 23.5 x 45 cm |
| Color | White |
| Style | Tankless Water Heater |
| Material | Multiple |
| Maximum Operating Pressure | 8 bar |
| Special Features | Rapid heating, Overheating protection |
| Power Source | Electric |
4. Setup and Installation
Installation of the Veito FLOW Instant Water Heater requires professional expertise. It involves both electrical and plumbing work. Ensure all local and national codes are strictly followed.
4.1 Electrical Connection
- Verify that your electrical system can support a 7.5 kW appliance.
- A dedicated circuit with appropriate wire gauge (e.g., 6mm² as recommended by some professionals for 7.5 kW units) and a suitable circuit breaker is essential.
- Ensure proper grounding.
4.2 Plumbing Connection
- Mount the water heater securely to a wall near the point of use.
- Connect the cold water inlet to the designated inlet port on the heater.
- Connect the hot water outlet from the heater to your faucet or shower head.
- Ensure all connections are watertight to prevent leaks.
- Before connecting the power, flush the system with water to remove any air and debris.

Figure 2: Typical plumbing diagram for sink installation. Red lines indicate hot water, black lines indicate cold water.

Figure 3: Typical plumbing diagram for sink and shower installation. Red lines indicate hot water, black lines indicate cold water.
5. Operating Instructions
Once properly installed and connected, operating your Veito FLOW Instant Water Heater is straightforward.
5.1 Initial Start-up
- Ensure the water supply is turned on and water is flowing through the unit.
- Turn on the electrical power to the water heater at the circuit breaker.
5.2 Temperature Adjustment
The water heater features a rotary knob on the front panel (refer to Figure 1). Rotate this knob to adjust the desired water temperature. Turning the knob clockwise typically increases the temperature, while counter-clockwise decreases it.
5.3 Water Flow
The instant water heater activates when water flows through it. For optimal heating performance, ensure a consistent water flow. Excessive flow rates may result in cooler water temperatures, especially in colder climates or during winter months.
6. Maintenance
Regular maintenance ensures the efficiency and extends the lifespan of your water heater.
- Cleaning: Periodically wipe the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Inlet Filter: Check and clean the inlet water filter periodically to prevent blockages and maintain optimal water flow. Turn off the water supply and power before accessing the filter.
- Descaling: In areas with hard water, mineral deposits (limescale) can build up inside the heating elements. If you notice a decrease in heating efficiency or water flow, professional descaling may be required. This should only be performed by a qualified technician.
- Winterization: If the unit is in an unheated area and there is a risk of freezing, drain the water heater completely to prevent damage.
7. Troubleshooting
If you encounter issues with your Veito FLOW Instant Water Heater, refer to the following table for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Water is only lukewarm |
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| Water pressure is low |
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| Water leaks from the unit |
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| Unit makes unusual noises |
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If the problem persists after attempting these solutions, please contact a qualified service technician.
8. Warranty and Support
For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or contact your retailer or the Veito customer service directly. Keep your purchase receipt as proof of purchase.