Electrical Wiring - Hitachi DHWT200E-2.5H1E Installation And Operation Manual

1 Electrical wiring

13
13 ELECTRICAL WIRING
13.1 GENERAL CHECK
1 Ensure that the field-supplied electrical components (mains
power switches, circuit breakers, wires, connectors and wire
terminals) have been properly selected according to the elec-
trical data indicated. Make sure that they comply with national
and regional electrical codes.
2 Electrical connection must be done by professional installer.
3 Check to ensure that the power supply voltage is within +/-
10% of the rated voltage.
4 Make ensure that power supply has an impedance low enough
to warranty not reduce the starting voltage more than 85% of
the rated voltage.
5 Check that the earth wire is securely connected, tagged and
locked in accordance with national and local codes.
6 Connect a fuse of specified capacity.
7 Check periodically the electrical connection tightening.
C A U T I O N
• Check to ensure that screws for terminal block are tightly
tightened.
• Protect the wires, drain pipe, electrical parts, from rats
or other small animals. If not protected, rats may damage
unprotected parts, and at the worst, a fire will occur.
13.2 ELECTRICAL WIRING CONNECTION
The electrical wiring connection between DHWT and Yutaki system is as follows:
Customer connection:
Power Supply
1~230V 50Hz
17 PMML0198A-rev.1 - 04/2011
• Wrap the accessory packing around the wires to protect
the product from any condensed water and insects.
• Tightly secure the wires with the cord clamp inside the
unit.
• Lead the wires avoiding any contact with water piping.
• Wrap the accessory packing around the wires from sys-
tem controller.
D A N G E R
• Do not connect or adjust any wiring or connections un-
less the main power switch is OFF.
• When there are more than one power switch for ON/OFF,
check and test to ensure that all are turned OFF.
Electrical Heater
DHWT
Pump
connection
Sensor
DHWT