Hitachi YUTAKI Serie Installations- Und Betriebshandbuch Seite 188

MAINTENANCE
The manometer is placed at different positions according to each unit model
Yutaki S / SCombi
In Yutaki S and SCombi models, the manometer is installed factory supplied as it is shown:
Yutaki S
Manometer
Yutaki M
For the Yutaki M series it is highly recommended to install, field supplied, a manometer gauge attached to the water inlet pipe and
after the shut-off valve.
Yutaki S80
Yutaki S 80 has special configurations for the position of the manometer. While it is factory supplied in only one position (left side), it
can be moved by the installer to the right side or to the front of the unit. For example, in case of a wall at the left side or at both sides
of the YUTAKI S80 unit, respectively.
Manometer at Left side (factory supplied)
Manometer
?
N O T E
This is the factory supplied location of the
manometer
?
N O T E
The water pressure must remain above 1 bar in order to prevent air from entering the circuit, and below 3.0 bars (safety valve opening value).
- DHW (if used): Check there is no loss of pressure and ensure that DHW pressure is not higher than 6 bars. Connect a
gauge to the DHW drain port for this purpose.
4 Security water valve for DHW (if used):
• Operation: Check the correct operation of the security water valve (pressure and temperature relief valve) at the DHW inlet
connection. Remember that this element must ensure that the following functions are pro vided: Pressure protection, non-
return function, shut-off valve, filling and draining.
176 PMML0335A rev.1 - 04/2016
Yutaki S Combi
Manometer
Manometer at Front side
Manometer
?
N O T E
This configuration requires removing the front
panel, both for mounting and to display the
gauge.
Manometer at Right side
Manometer
?
N O T E
Installer can change the location of the
manometer gauge