Electronic instantaneous water heater type CEX-U / 11-13.5 kW - 400 V under-counter

Areas of application
• Kitchen sink
• Washbasin
(with direct installation to the connecting pipes of the sanitary fitting)

• For one or two sampling points
• Easy installation under the kitchen sink thanks to its small dimensions and
External DN 10 (3/8") water connections for pressure-resistant and
pressureless installation
• With 600 mm mains connection cable for a 3-phase cooker connection box

Type CEX-U Electronic
• Energy-efficient hot water preparation
without heat loss
• Precise temperature control thanks to TWIN
TEMPERATURE Control TTC® up to the
Performance limit
• Compatible with solar panels

Model: CDX-U CEX-U CEX
Technical data
Rated power [kW] 11 11 / 13.5 11 / 13.5
Energy efficiency class A*) A*) A*)
Contents [Liters] 0.3 0.3 0.3
Permissible operating pressure [MPa (bar)] 1 (10) 1 (10) 1 (10)
Water connections (screw connections) DN 10 (3/8") DN 10 (3/8")
Temperature selection range [°C] ex works 50 20 to 60 20 to 60
(internally adjustable between 30 and 60)
Hot water output at Δt = 33 K 1) 2) [l/min] 4.8 4.8 3) / 5.8 2) 3) 4.8 3) / 5.8 3)
Switch-on max. flow rate 4) [l/min] 2 – 5 2 – 5 2 – 5
Voltage [V AC] 3~ / PE 400 3~ / PE 400 3~ / 400
Rated current 2) [A] 3 x 16 3 x 16 / 3 x 20 3 x 16 / 3 x 20
Minimum required cable cross-section 5) [mm²] 1.5 1.5 / 2.5 1.5 / 2.5
IES® Bare Wire Heating System [Ω cm 6)] 1000 1000 1100
Approx. weight with water filling [kg] 2.7 2.7 2.7
Moisture protection rating according to VDE IP 24 IP 24 IP 25

Comfortable keypad