Hitachi YUTAKI S80 Series - Levelling Procedure; Tanks Fixation to the Wall; Test and Check; Covers Assembly

36 PMML0291A rev.2 - 09/2014
INSTALLATION

Tank thermistor
Follow the same procedure as for the electrical heater wire but
connecting the Tank thermistor wires to the 28 and 29 connec-
tions of the Terminal Board 2.
29
28

LCD controller
Rear E-BOX 1
1 Take the LCD electrical cable, pass it behind the partition
plate and wire it to the two clamps located at the right side
and upper part of the indoor unit.
2 Connect the connector cable to the wire-to-wire connector in
the Electrical Box 1 back side as shown in the gure.
CAUTION
Do not cut or extend the LCD electrical cable.
Wire-to-wire LCD
connector (CN28)
7.4.13 Levelling procedure
Follow the same procedure explained in Installation of indoor unit
alone (Without tank) on the YUTAKI S80 indoor unit Installation
and operation manual.
7.4.14 Tank’s xation to the wall
In case of indoor unit with integrated tank it is mandatory when
there is not upper restriction xing the domestic hot water tank to
the wall in order to provide a higher stability (use the factory sup-
plied accessory intended for this purpose).
1 Fix the accessory to the DHW tank on the upper cover through
the holes with the bundled factory supplied screws.
NOTE
Use the accessory slotted hole to x the DHW tank to the wall at
the desired distance.
2 Fix the accessory to the wall with eld supplied screws.
NOTE
Check that the set (indoor unit with integrated tank) is installed
totally vertical.
7.4.15 Test and check
Before assembling the covers, test and check the following items:
• Water leakage
• Refrigerant leakage
• Electrical connection
• ...
NOTE
The following documents must be referred:
• Refer to the chapters Water lling and Commissioning in this
document (Tank)
• Refer to the YUTAKI S80 indoor unit Installation and opera-
tion manual, for the information about the refrigerant charge,
water lling and Commissioning of the indoor unit.
• For the specic details about refrigerant charge tasks refer the
Outdoor unit Installation and Operation manual.
DANGER
DO NOT CONNECT THE POWER SUPPLY TO THE INDOOR
UNIT AND DHW TANK PRIOR TO FILLING BOTH CIRCUITS
WITH WATER AND CHECKING WATER PRESSURE AND THE
TOTAL ABSENCE OF ANY WATER LEAKAGE.
7.4.16 Cover’s assembly
Finally, reassembly all the cover’s removed.