DE GB
12
Technical specifications
Description of the appliance
Hydrex / Elex 18, 21, 24 kW
The instantaneous water heaters with water pressure control (Hydrex 18, 21, 24 kW) and
those with electronic control (Elex 18, 21, 24 kW) are intended for use in unvented systems,
to heat cold water to DIN 1988 and to supply one or more draw-off points.
The instantaneous water heaters should be installed and indoors and preferably vertically
near the water connection. The appliance shall not be switched on if there is a possibility
that the water in the heater is frozen.
Housing
Operating Display
Hydrex
Elex
Electronic Instant Waterheater
18kW
21kW
24kW
Hydraulic Instant Waterheater
18kW
21kW
24kW
Electric supply
400V 3~ 50Hz
Nom. power rating
18kW
21kW
24kW
Nominal current
26-32A
30-32A
35-40A
Cable size
4.0mm²
Flow Rate (Δt=25°C)
10L/min.
11,8L/min.
13L/min.
Flow Rate (Δt=35°C)
7L/min.
8,2L/min.
9,3L/min.
Heating system
unvented
Temperature range
0°C - 75°C
Max. pressure water mains
0,6MPa
Switch on Flow rate
2,5L/min.
Switch on Flow Pressure
0,1MPa - 0,6MPa
Max. inlet temperature
20°C
Non-usage consumption
<0,001KWh
Protection Class
I
Type of Protection
IP24
Dimensions
255 x 115 x 472mm
Unit Weight
4,3kg
4,4kg
4,5kg
Water connections
G1/2"
