Pressure Drops; Electrical Wiring; General Check - Hitachi DHWT-200S-3.0H2E Manual De Instrucciones

ELECTRICAL WIRING

8.1 PRESSURE DROPS

8000
7000
6000
5000
4000
3000
2000
1000
0
0
9 ELECTRICAL WIRING

9.1 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
electrical 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.
9.2 WIRE SIZE
Recommended minimum sizes for field provided
Model
DHWT
?
N O T E
• Follow local codes and regulations when selecting field wires, Circuit Breakers and Earth Leakage Breakers.
• Use the wires which are not lighter than de ordinary polychloroprene sheated flexible cord (code designation H05RN-F).
8 PMML0347B rev.1 - 06/2016
Pressure loss in coil
1,4 m²
1,8 m²
1 2 3 4 5
[m /h]
Flow
Power Source Max Current
1~ 230V 50Hz
6 7 8 9 10
!
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.
• 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 system controller.
!
D A N G E R
• Do not connect or adjust any wiring or connections unless 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.
EH Power source cable
size
EN60 335-1
15A 2.5mm
DHWT-200S-3.0H2E
DHWT-300S-3.0H2E
Sensor cable size
EN60 335-1
0.75mm
2 2