emmeti ECO HYDRO KIT ITM-200 B, Installation And Use Manual

Page: 73 / 80

73
GB
Maintenance/replacement of electrical resistance
Before carrying out any maintenance work, make sure that
the power supply has been disconnected by using the
appropriate switch.
Never touch the electrical components immediately after
disconnecting the power supply, always wait at least 5
minutes.
Electrical Heater
Unscrew the 2 screws to disconnect the power
cables of the thermostat and extract it.
Use a 55mm hex socket wrench to
unscrew the electrical resistor and remove it.
Perform the reverse procedure to reinsert the heating
element and the thermostat in place and screw it back
in, correctly reconnect the thermostat power cables (blue
wire = neutral N ; brown wire = phase L), reassemble the
lower and upper front panels.
Expansion vessels
Expansion vessel for the primary heating / cooling circuit
code 90061370 spare part
Expansion vessel 10 liters (
C
on page 49)
Preload pressure: 1,5 bar
Max working pressure: 3 bar
Safety valve calibration pressure of 2,5 bar
Expansion vessel for domestic water with interchangeable
membrane code 00800008 spare part
Expansion vessel 8 liters (
4
on page 49)
Preload pressure: 2,5 bar
Max working pressure: 10 bar
Safety valve calibration pressure of 6,0 bar
3
4
C
D
A
B