Hitachi YUTAMPO Serie Installations- Und Betriebshandbuch Seite 16

ELECTRICAL AND CONTROL SETTINGS
6.4.1 Power and transmission wiring connection

Safety instructions
!
D A N G E R
• Do not connect the power supply to the indoor unit prior to filling
the space heating and DHW circuits with water and checking
water pressure and the total absence of any water leakage.
• Do not connect or adjust any wiring or connections unless the
main power switch is OFF.
• When using more than one power source, check and ensure that
all of them are turned OFF before operating the indoor unit.
• Avoid wiring installation in contact with the refrigerant pipes,
water pipes, edges of plates and electrical components inside the
unit to prevent damage, which may cause electric shock or short
circuit.
!
C A U T I O N
Make sure that all wiring and protection devices are properly selected,
connected, identified and fixed to the correspond ing terminals of the unit,
specially the protection (earth) and power wiring, taking into account
the applicable national and local regulations. Establish proper earthing;
Incomplete earthing may cause electric shock.

Connection procedure
Perform the following steps after having accessed the electrical
box:
1 Power supply of the electrical heater:
TERMINAL BOARD 2 (TB2)
Earth terminal
2 Connect the transmission wires between outdoor and indoor
unit to the terminals 1, 2 and 3 on the terminal board 1 (TB1).
YUTAMPO
Earth screw
Terminal
board
Connecting
cord 1.5mm
Terminal
board
DHW
10 PMML0451 rev.2 - 03/2018
Power terminals of
L N
the electric heater
Green & Yellow
2
Earth
screw
3 Fix the cables using the cord bands located in the electrical
box. Route the cables out through the electrical wiring holes
with rubber bushing at the bottom side of the indoor unit.
Cord bands
Rubber bushing for power
and transmission wires
6.4.2 Levelling procedure
After completing the connections described above, adjust the
height of the mounting feet to align the height of the refrigerant
piping outlet with that of the connection of the installation.
?
N O T E
• This procedure must be done before filling the water tank.
• Only adjust those feet in which adjustment is necessary.
• Start with all four feet screwed in as far as possible (factory supplied
position).
• The levelling procedure must be performed by two people.