Hitachi RAW-35RHC - Replacing the Mg Anode Rod

5 Servicing
Indoor unit
SMGB0135 rev.0 - 06/2020
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6 Install new one thermostat.
a. Insert the thermostat bulb and capillary through the
hole of the heater cover.
a. Apply conductive silicon grease in the sheath
-1- and thermostat bulb -2- to ensure the contact
surface.
b. Insert the thermostat bulb -2- inside the sheath -1-.
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c. Assembly the thermostat and x it with the external
nut.
d. Connect all the terminals to the thermostat in the
same position as it was originally and close the
ebox.
e. Mount the heater cover and x it with the screws
(x4).
5.2.7 Replacing the Mg Anode rod
1 Drain the DHW tank as explained in section “Draining
of the DHW” in “7. Maintenance notes” chapter.
2 Remove the anode cover.
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3 Loosen the anode rod with a M17 socket spanner.
4 Take out the anode rod from the tank and replace it if it
is necessary.