Space Heating Pipes Connection; Drain Pipes Connection - Hitachi YUTAKI S Series Installation And Operation Manual

7.1.0.3 Space heating pipes connection
The unit is factory supplied with two shut-off valves which have to be connected to the water inlet
/ outlet connections. With these shut-off valves it is very practical to connect the indoor unit to the
heating system by using the factory supplied gaskets just below the valves. Then, the space heating
installation can be carried out.
Gaskets
7
Shut-off valves
7.1.0.4 Drain pipes connection
For a correct drainage, connect the drain pipe for the safety valve to the general draining system.

NOTE
• The safety valve is activated when water pressure reaches 3 bars.
• Drain taps must be provided at all low points of the installation to permit complete drainage of
the circuit during servicing.
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PMEN0643 rev.0 - 04/2023