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)) - Hitachi YUTAKI S80 Series Installation And Operation Manual

INSTALLATION
7.5 INSTALLATION OF INDOOR UNIT WITH HITACHI TANK (TANK BESIDE THE INDOOR
UNIT)
N O T E
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).

7.5.1 Water pipes connection to the indoor unit (Space heating pipes)

Follow the same procedure explained in
operation manual.
7.5.2 Drain pipes connection
Follow the same procedure explained in
operation manual.

7.5.3 Water pipes connection to the indoor unit (Flexible water pipes kit (ATW-FWP-01))

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Flexible water pipes identification
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 flexible water pipes
• 5 gaskets (4 gaskets for each flexible 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).
Flexible
water pipes
Gaskets
It is necessary to identify the function of each water pipe.
Ø19.05
(3/4")
37 PMML0291A rev.2 - 09/2014
8 Tank's placing.
9 Connection between the flexible water pipes kit (ATW-
10 Water pipes connection to the DHW installation (DHW pipes).
11 Power wiring connection.
12 Tank wiring connection.
13 Levelling procedure.
14 Tank's fixation to the wall.
15 Test and check.
16 Cover's assembly.
Installation of indoor unit alone (Without tank)
Installation of indoor unit alone (Without tank)
Flexible water pipes of the kit
Item
1600mm
1400mm
FWP-01) and the heating coil pipes.
on the YUTAKI S80 indoor unit Installation and
on the YUTAKI S80 indoor unit Installation and
Extension
cables
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.
Connection