STIEBEL ELTRON STE DEL 18/21/24 Plus Instantaneous Water Heater 18/21/24 kW 400V

The STIEBEL ELTRON STE DEL 18/21/24 Plus is a high-performance electronic instantaneous water heater designed for multiple tap points. With selectable power settings of 18, 21, or 24 kW and a 400V three-phase connection, it provides precise temperature control and energy-efficient hot water on demand. Ideal for showers, baths, and kitchen sinks, this wall-mounted unit features a bare wire heating system, IP25 splash protection, and a user-friendly multi-segment display with two programmable temperature buttons.

Advantages

Energy efficiency class A ensures low operating costs. The electronic control maintains a constant outlet temperature even with fluctuating water pressure. Compact design saves space, and the integrated safety temperature limiter provides peace of mind.

Suitable for

• Households with multiple bathrooms or high hot water demand
• Renovations or new builds requiring a reliable tankless solution
• Installations where space is limited

Key specifications

• Selectable power: 18 kW / 21 kW / 24 kW
• Voltage: 400 V (3-phase)
• Current at 24 kW: 35 A
• Temperature range: 20 - 60 °C
• Switch-on flow rate: 2.5 l/min
• Max flow rate: 13.2 l/min
• Water connection: G 1/2"
• Protection class: IP25
• Dimensions (H x W x D): 470 x 225 x 105 mm
• Weight: 3.5 kg
• Colour: White

Recommendations

For optimal performance, ensure the electrical installation meets the required specifications. Professional installation by a qualified electrician is recommended.