Hitachi YUTAKI S80 Serie Manuel D'instructions page 23

INSTALLATION
7 Connection of the water pipes to the DHW installation.
• Connect the pipes of the DHW installation to the inlet and
outlet connections of the DHW tank.
DHW outlet connection
(G 3/4" male)
DHW outlet connection
(G 3/4" male)
8 Connetion of the tank wiring to the indoor unit.
• The three electrical wires are already connected to the DHW
tank. They are located at the front side of the DHW tank
fastened with clamps.
• Take the three cables and drive them through the rubber
grommets in the partition plate at the bottom of the tank unit
and again through the rubber grommets at the rear side of
the Ebox.
• Connect each cable in the correct place according to the
wiring diagram. (See next picture)
Unit controller connection cable
Electric heater connection cable
Thermistor connection cable
15 PMML0344B rev.2 - 01/2021
Rear view
OK
30(N)
31(L)
9 Levelling procedure
Once the connections of the tank have finished, it is
necessary to levelling the unit.
?
N O T E
• Adjust only the necessary mounting foot of the unit.
• Start with all four feet screwed in as far as possible (factory
supplied position).
• Two people are necessary for the levelling procedure.
Follow the process:
Turn the mounting foot to extend the height (use the
hexagon or slot designed for this purpose in the shaft end).
!
C A U T I O N
• Take care do not turn the weld nut when turning the mounting foot.
Use an slot with a height profile lower than 5 mm.
• Never work on more than one foot at the same time. When
finishing, all 4 lock-nuts must be tightened firmly.
Hexagon and
slot for help
in the foot
adjustment
process
Threaded
shaft
Weld nut
Foot
10 Tank fixation to the wall
In case of indoor unit with integrated tank it is mandatory,
when there is not upper restriction, to fix the domestic hot
water tank to the wall in order to provide a higher stability.
The accessory and screws for that purpose are field supplied.
The distance and measure are shown in the next picture.
• Fix the accessory to the DHW tank on the upper cover
through the holes.
3(A)
4(B)
}
5
6

Adjust the
!
foot's height as
needed
(2 options)
Extend
Take in
122 mm: minimum distance
between the end of the male
fitting and the wall fixing hole