ThermoFlow Elex 21 - Page 26

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Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN
Technical Specifications
Technical specifications
Single-Phase Comfort Series Elex 15 Elex 18 Elex 21
Electric supply 220-240V ~ 50Hz 220-240V ~ 50Hz 220-240V ~ 50Hz
Nominal power rating 15 kW 18 kW 21 kW
Nominal current (2) 33 A (2) 39 A (2) 46 A
Earth leakage circuit breaker (2) 2-POLE 40A (2) 2-POLE 40A (2) 2-POLE 50A
Cable size (2) 4�0 mm
2
(2) 4�0 mm
2
(2) 6�0 mm
2
Resistivity of the water supply ≥ 1300 Ω•cm ≥ 1300 Ω•cm ≥ 1300 Ω•cm
Flow rate (Δt=25°C) 8�5 L/min 10�2 L/min 11�9 L/min
Flow rate (Δt=35°C) 6�0 L/min 7�2 L/min 8�5 L/min
Heating system Bare element Bare element Bare element
Temperature range 35 - 60 °C 35 - 60 °C 35 - 60 °C
Switch on flow rate 2�5 L/min 2�5 L/min 2�5 L/min
Non-usage consumption < 1Wh/h < 1Wh/h < 1Wh/h
Protection class IP25 IP25 IP25
Unit dimensions 477x257x125mm 477 x 257 x 125 mm 477 x 257 x 125 mm
Unit weight 4�2 kg 4�2 kg 4�2 kg
Water connections G1/2" G1/2" G1/2"
Max� inlet water pressure 1�0 MPa 1�0 MPa 1�0 MPa
Min� inlet water pressure 0�1 MPa 0�1 MPa 0�1 MPa
Switch on flow pressure 0�1 MPa 0�1 MPa 0�1 MPa