Stiebel DEL 27 Plus Instant Electric Hot Water System

Stiebel DEL 27 Plus Instant Electric Hot Water System

The Stiebel DEL 27 Plus is the most powerful model in the DEL Plus range, offering high-capacity, three-phase instantaneous electric hot water delivery. German-engineered and featuring advanced 3i technology, the DEL 27 Plus ensures rapid and consistent temperature-controlled hot water at up to 50 °C. Larger homes or businesses needing several hot water outlets simultaneously will find this model ideal with a digital display, ECO water-saving mode, memory temperature settings, and anti-scalding protection.

FEATURES:

Heating Method:
Electric – bare wire heating system with electronic output control

Hot Water Supply:
Instantaneous – no storage tank, water heated on demand

Recovery Time:
Instantaneous – delivers continuous hot water when required

Installation Location:
Indoor installation – suitable for under-sink or over-sink applications

Water Pressure:

  • Maximum permissible pressure: 1000 kPa
  • Minimum flow to activate: 2.5 L/min

Energy Efficiency:
N/A – no star rating; however, features ECO mode for water and energy saving

Operating Costs:
Economical operation with 3-stage ECO flow-limiting settings (6, 7, or 8 L/min) to reduce consumption

Best for:

  • Large households or shared bathrooms
  • Offices, gyms, or commercial sites
  • Areas with high hot water demand at multiple outlets

Number of Bathrooms and People (Capacity):

  • Suitable for 2–3 bathrooms
  • Ideal for 4–6 people depending on usage and climate

Additional features:

  • ECO flow limitation: 3 adjustable levels for energy/water saving
  • User-friendly interface with backlit LCD screen
  • Two programmable memory temperature buttons
  • Anti-scalding protection with optional factory jumper set to 43 °C
  • Air detection system to prevent heating system damage
  • Suitable for use with preheated water (e.g., solar systems)
  • Optional wireless remote control (FFB 4 Set) for convenience

Specifications

Hot Water Delivery: Up to 14.3 L/min at 28°C rise
Up to 8.0 L/min at 50°C rise (at 415V)
Weight (Empty) Approx. 3.2kg
Height 466 mm
Width 225 mm
Depth 116 mm

Warranties

Manufacturers Tank Warranty (Domestic) 7 years
Manufacturers Parts & Labour Warranty (Domestic) 1 year

Technical Specifications

Powerpoint Required: Yes – 3-phase, 415V connection
Hot Water Connection: G 1/2 (standard BSP thread)
Rated Power: 28 kW at 415 V
Rated Current: 38.9 A
IP Rating: IP25 (vertical install only)
Fuse Protection: 40 A
Temperature Range: >20°C to 50°C
WaterMark Approved: Licence No. WMKA00301 – AS3498 certified
Heating Element Type: Bare wire enclosed in pressure-tested plastic for rapid heating and scale resistance