OSO HOTWATER OC 300 HT, Инструкция по технике безопасности и установке

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10
RESET
RE
SET
M2
1
2
3
4
THERM-O-DISC
60°C 90°C
80°C 70°C
1
2
R S
Wiring diagram - 1x230V
Standard connection for upper cylinder
Wiring diagram - 3x230V
Standard connection for lower cylinder
OC 300 LT: 9 kW/OC HT 300 + OC 360 LT: 7.5 kW
3.7.4 Torque settings
! WARNING
Continuous voltage is present at the terminals in
the junction boxes. Before any electrical work is
done, the power supply 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)
3.7.2 Electrical connections in upper junction box
A) Blue wire (R) – Neutral – connected to point ‘1’
on the safety thermostat.
B) Brown wire (S) – Live – connected to point ‘3’
on the safety thermostat.
C) Yellow wire with green stripe – Earth –
connected to the terminal for the heating
element (hexagonal brass)
D) Internal wires from the element to the
thermostat are connected to point ‘4’ on
the safety thermostat and point ‘2’ on the
work thermostat. See illustration.
3.7.3 Electrical connections in lower junction box
A) Live wires from the power supply cable are
run to the terminal as shown.
All internal wiring is factory-fitted.
B) Yellow wire with green stripe – Earth –
connected via connection piece to the prod-
uct’s outer shell. Earth wire from the connect-
ion piece to the tank is factory-fitted.
C) Switching to alternative power is possible, see
section 3.7.7.
3.7 Electrical installation
3.7.1 Electrical components
Component Note
Safety thermostat 98°C thermal cut-out
Work thermostat, upper cyl. 60-90°C adjustable
Work thermostat, lower - OC 30-60°C adjustable
Work thermostat, lower - OC HT 60-90°C adjustable
Heating element, upper cyl. 1fas 230V 1-barrel
Heating element, lower cyl. 3-phase 230V 3-barrel
Internal wires Heat-resistant
Fixed electrical fittings must be used for installa-
tion of OC domestic heating units. Any electric
fittings must be installed by an authorised electri-
cian. The relevant standards and regulations must
be followed.
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