Remove the plastic lid with a slot-head screwdriver. Before resetting the overheat
protection device, determine what caused the device to trip and address the issue. The
device may have tripped due to vibration during transport or relocation.
The electric immersion heater cartridge contains three 2-kW heating elements. The
combined power rating for the heating elements is 6 kW. The heating elements are
controlled in three stages. Stage 1 is connected to contactor K2. Its capacity is 2 kW.
Stage 2 is connected to contactor K3. Its capacity is 4 kW. When the third stage is
active, stages 1 and 2 are energized simultaneously.
Electric immersion heater ver. 2
Pos.
Item
1
Thermostat
2
Overheat protection reset
3
Power connection
In-line heater
2.5 Bleeding the domestic hot water coil (CUBE)
Bleed the unit’s internal coil carefully during installation. Draw water through the return
line and let the air out through the bleed screw. Set the change-over valve in position
B, and close the flow line shut-off valve. This way, the water flows only through the coil
and into the bleed valve.
When the unit is shipped from the factory, the change-over valve is set to position B.
The valve should be left in this position whenever domestic water is not being heated.
If necessary, the valve position can be changed using the automation system’s manual
operation function. Alternatively, detach the valve actuator and carefully turn the valve
shaft with a small wrench or similar tool.
M8006 2123EN
15 (54)
