Hitachi YUTAKI S80 Series - Installation of Indoor Unit with HITACHI Tank (Tank Beside the Indoor Unit); Water Pipes Connection to the Indoor Unit (Space Heating Pipes); Drain Pipes Connection; Water Pipes Connection to the Indoor Unit (Flexible Water Pipes Kit (ATW-FWP-01))

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PMML0291A rev.2 - 09/2014
INSTALLATION
ENGLISH
7.5 INSTALLATION OF INDOOR UNIT WITH HITACHI TANK (TANK BESIDE THE INDOOR
UNIT)
NOTE
Please, try to perform all this procedure following all the steps in the exact order which they are presented below.
Installation procedure
1 Water pipes connection to the indoor unit (Space heating
pipes).
2 Drain pipes connection.
3 Water pipes connection to the indoor unit (Flexible water
pipes kit (ATW-FWP-01)).
4 Refrigerant piping connection and indoor unit’s placing.
5 Water pipes connection to the space heating (Space heating
pipes).
6 Water pipes connection to the tank (DHW pipes).
7 Water pipes connection to the tank (heating coil pipes).
8 Tank’s placing.
9 Connection between the exible water pipes kit (ATW-
FWP-01) and the heating coil pipes.
10 Water pipes connection to the DHW installation (DHW pipes).
11 Power wiring connection.
12 Tank wiring connection.
13 Levelling procedure.
14 Tank’s xation to the wall.
15 Test and check.
16 Cover’s assembly.
7.5.1 Water pipes connection to the indoor unit (Space heating pipes)
Follow the same procedure explained in Installation of indoor unit alone (Without tank) on the YUTAKI S80 indoor unit Installation and
operation manual.
7.5.2 Drain pipes connection
Follow the same procedure explained in Installation of indoor unit alone (Without tank) on the YUTAKI S80 indoor unit Installation and
operation manual.
7.5.3 Water pipes connection to the indoor unit (Flexible water pipes kit (ATW-FWP-01))

Flexible water pipes identication
For installing the tank beside the indoor unit (both left or right side) the dedicated kit for installation with tank beside the indoor unit
(ATW-FWP-01) is required. This kit is provided with the following items:
• 2 exible water pipes
• 5 gaskets (4 gaskets for each exible water pipe end and 1 spare gasket)
• 3 extension cables (1 for the tank’s electric heater, 1 for the tank’s thermistor and 1 for the LCD controller).
Extension
cables
Flexible
water pipes
Gaskets
It is necessary to identify the function of each water pipe.
Flexible water pipes of the kit
Item Connection
1600mm
Ø19.05
(3/4”)
1400mm
Kit pipe for heating coil inlet
For the connection between the 3-way valve heat-
ing coil inlet connection and the free end of the
heating coil inlet pipe.
Kit pipe for heating coil outlet
For the connection between the T-branch heating
coil outlet connection and the free end of the heat-
ing coil outlet pipe.