10
RESET
RE
SET
M2
1
2
3
4
THERM-O-DISC
1
2
RESET
RE
SET
M2
1
2
3
4
THERM-O-DISC
1
2
RESET
RE
SET
M2
1
2
3
4
THERM-O-DISC
1
2
L1
L2
L3
L1
L1
L2
L2
L3
L3
Electrical connection, diagram
3x5 kW - 3x230V / 3x400V
3.6.3 Torque settings
!
WARNING
Constant voltage present at the terminals. Be-
fore any electrical work is done, the power sup-
ply must be disconnected and secured against
activation while the work is in progress.
Component
Torque
5/4” heating element
60 Nm (+/- 5)
Thermostat screws
2 Nm (+/- 0.1)
Screw on the element head
2 Nm (+/- 0.1)
A) Supply cable connected to Ensto connecting
piece (1) as shown. Supply pipes should
be secured with suitable strain relievers.
B) Internal wires from connector (1) to
thermostats and wires from thermostats
to elements are pre-connected from the fac-
tory.
C) Ensure that the earth (yellow wire with green
stripe) is connected to earthing point
Cover of junction box should be correctly mount-
ed before the power is switched on. The power
must not be switched on until the product has
been filled with water.
3.6 Electrical installation
3.6.1 Electrical components
Component
Note
Safety thermostat
98°C thermal cut-out
Work thermostat
60-90°C adjustable
Heating element
3-phase 230 V
Internal wires
Heat-resistant
Fixed electrical fittings must be used for instal-
lation. Any electric fittings must be installed by
an authorized electrician. The relevant standards
and regulations must be followed.
3.6.2 Electrical connections in the junction box
1
The MX is fitted
with two identical
junction boxes.
Circuit diagram
shows stand-
ard connection
from the factory
(3x230V), and also
applies to 3x400V
(elements need
to be changed to
415V).
