SATK22
25
Cleaning the HIU primary circuit strainer
All heat interface units have a strainer on the inlet for water
from the centralised system.
To clean these strainers, carry out the following maintenance
procedure:
•
Unscrew the cap (B)
•
Remove the strainer mesh and discard any impurities it
contains
•
Refit the strainer mesh
•
Refit the cap and tighten it.
Temperature probe replacement
•
Disconnect the probe cable by bending tab (C) slightly and
extracting the connector.
•
Unscrew the probe
•
Fit the new probe
•
Reconnect the connector respecting the only possible way it
can be inserted.
Replacing the actuator
•
Disconnect the valve actuator (see previous paragraph)
•
Extract the obturator, unscrewing the locking nut (F)
•
Replace the actuator, screw on the locking nut (F) and then
fit the actuator
•
Insert the fixing clip, respecting the correct direction
•
Reconnect the connector.
Replacing the valve obturator
•
Extract the fixing clip (D) and then the actuator
•
Position the new actuator (E)
•
Insert the fixing clip, respecting the correct direction
•
Reconnect the connector.
Replacing the DHW priority flow switch
•
Disconnect the flow meter cable acting on the connector
•
Extract the flow sensor (G)
•
Position the new sensor
•
Re-connect the connector respecting the only possible way
it can be inserted.
Replacing or cleaning the DHW priority flow meter turbine
•
Extract the flow sensor
•
Unscrew and remove the cartridge (H)
•
Remove any impurities or change the cartridge if necessary
•
Screw the cartridge back in
•
Reposition the flow sensor
When carrying out maintenance on the electrical part, follow
the connectors illustrated on page 20.
After concluding maintenance, proceed with the filling and
checking operations described in the chapter “commissioning”
(page 9) re-fit the cover.
If you require any information regarding spare parts, please
contact Altecnic Limited.
G
H
F
F
C
C
C
C
B
D
E
