Hitachi RWH-4.0NFE, Installation & Operation Manual

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ENGLISH
13.1.3 Test and check
Finally, test and check the following items:
• Water leakage
•
Refrigerant leakage
• Electrical connection
• ...
?
N O T E
Please refer to the chapters of “6.3.3 Refrigerant charge” , “6.5.3.1 Water filling” and “5 Once all the water has been drained, and all maintenance
operations have been finished, close again the drain port and open again the valve of the water inlet pipe to restart the normal operation of the unit.” in
this document and refer the Outdoor unit Installation and Operation manual for the specific details about refrigerant charge tasks.
!
D A N G E R
Do not connect the power supply to the indoor unit prior to filling the space heating circuit (and DHW circuit if it were the case) with water
and checking water pressure and the total absence of any water leakage.
13.1.4 YUTAKI S80
13.1.4.1 Removing the indoor unit covers
?
N O T E
• The pictures shown correspond to the YUTAKI S80 TYPE 1, but the procedure for removing covers is exactly the same for the TYPE 2 except in
case of lateral covers.
• Front cover needs to be removed for any task inside the indoor unit.
• Back cover does not need to be removed.

Removing the indoor unit front cover
1 Unscrew the 2 fixing screws at the lower side.
MAINTENANCE
PMML0575 rev.2 - 03/2022 331