Hitachi YUTAKI S80 Series - Levelling Procedure

46 PMML0291A rev.2 - 09/2014
INSTALLATION
Tank thermistor
1 Connect the extension cable to the factory supplied cable.
(Factory supplied cable)
(Extension cable)
1.1)
(Factory supplied cable)
(Extension cable)
1.2)
(*)
(*): Use a crimping tool to crimp the cables.
2 Follow the same procedure as for the electrical heater wire
but connecting the Tank thermistor wires to the 28 and 29 con-
nections of the Terminal Board 2.
29
28
(Extension cable)
LCD controller
1 Connect the extension cable to the factory supplied cable.
1.1)
(Factory supplied cable)
(Extension cable)
1.2)
(Factory supplied cable)
(Extension cable)
2 Follow the same procedure as for the electrical heater wire
but connecting the extension cable to the wire-to-wire con-
nector in the Electrical Box 1 back side as shown in the gure.
Rear E-BOX 1
Wire-to-wire LCD
connector (CN28)
7.5.13 Levelling procedure

Indoor unit
Follow the same procedure explained in Installation of indoor unit
alone (Without tank) on the YUTAKI S80 indoor unit Installation
and operation manual.

Domestic hot water tank
If it is necessary, adjust the height of the mounting foot as follows:
NOTE
• All the procedure must be done before lling the water tank.
• Adjust only the necessary mounting foot of the DHW tank with
the foot locknuts and when the tank is in the nal position
(moving the DHWT after levelling can make it uneven again).
• Start with all four feet screwed in as far as possible (factory
supplied position).
• Use two or more people for levelling procedure.
Follow the process:
1 Loosen the locknut of the mounting feet which needs to be
extended (using a wrench).
2 Turn the mounting foot to extend the height (use the hexagon
or slot designed for this purpose in the shaft end).
3 When the mounting foot is in his end position, lock the locknut.
It may be necessary holding the foot to keep it from turning
while tightening the locknut. Use for this purpose the hexagon
or slot in the shaft end.
If it is needed to proceed with the levelling procedure with a sec-
ond foot (process 1 to 3), never work over one foot at same time.
When nish, all 4 locknut must be tightened rmly.
5
8
Foot
Locknut
Weld nut
Washer
Threaded shaft
Hexagon and slot
for help in the
foot adjustment
process
17 mm
Loosen locknut
7mm
10 mm
Adjust the
foot’s height
as needed
(2 options)
Extend
Take in
Hold the foot
shaft to keep
it from turning
(2 options)
Lock the foot
turning the
locknut