USE OF ELECTRIC HEATING ELEMENT
The built-in electric heating elements, type SH are designed as backup heating of water in closed and open type
water heaters..
During operation, the heating element and protection tube of the probe shall be sufficiently immersed into
water.
Temperature of the electric heater housing shall not exceed 80º C.
The installation shall be carried out in compliance with the requirements defined by the applicable regulations as
well as local power supply regulations. The heater may be connected by authorised technician only.
Direct the power supply cord through the cable entry to the terminal pin in the electric heater. Take into account
the dimensions of the power supply cord.
Connect the built-in electric heater to power supply network (in compliance with the wiring diagram) and take
into account the correct voltage values. Before putting into service check if the wiring of the unit is made in
compliance wit the wiring diagram.
Electric wiring of the heaters with power of 2 kW or more is factory set to three-phase voltage of 3~400 V
(Figure 1) designed for direct regulation. Electric heaters with 2 kW power can be connected to single-phase
voltage of 230 V (Figure 2) or to three-phase voltage of 400 V (Figure 1), where the star connection should not
be connected to the ground conductor. The bridge connections on the terminal pin shall be made of 1,5 mm
copper wire.
1. Rotate the protective cover to the required position by removing the cover, turn it around and mount it again.
The sealing on the housing should not be moved in any way and be careful not to damage it. Use original
screws with washers. Damages caused by unprofessional installation of the electric heaters will not be covered
by the guarantee.
Figure 1: Three-phase voltage 400 V
(default setting)
WARNING: Do not forget to connect ground conductor!
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Figure 2: Single-phase voltage 230 V
(max. 3 kW)
2