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SATK20 & SATK30

16

Replacing the valve obturator

Disconnect the valve actuator (see previous paragraph).

Extract the obturator, unscrewing the locking nut (F).

Replace the obturator and screw on the locking nut (F), 
then insert the actuator.

Insert the fixing clip, respecting the correct direction

Reconnect the connector.

Replacing the valve actuator

Disconnect the actuator cable, lightly pressing the tab on 
the connector and extracting it (see page 17).

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.

Maintenance

Temperature probe replacement

Disconnect the probe cable, lightly folding the tab (C) and
extracting the connector (see page 17)

Unscrew the probe

Fit the new probe

Reconnect the connector respecting the only possible way 
it can be inserted.

When carrying out maintenance on the electrical system, for
the connections follow the diagram on page 16.

After concluding maintenance, refill the system and check the
operations described in the chapter “Commissioning” and
re-fit the cover.

For information regarding spare parts or other technical
information, please contact Altecnic.

Only genuine Altecnic re-placement components should be
used.

Replacing or cleaning the DHW priority flow meter turbine

Extract the flow sensor

Unscrew and remove the cartridge (H)

Remove any impurities present or change the cartridge if
necessary

Screw in the cartridge

Reposition the flow sensor.

Replacing the DHW priority flow meter

Disconnect the flow meter cable by means of the 
connector (see page 17).

Extract the flow sensor (G).

Position the new sensor.

Reconnect the connector respecting the only possible way 
it can be inserted.

C

G

F

D

E

H

Summary of Contents for Altecnic SATK20

Page 1: ...SATK20 SATK30 heat interface unit Installation Operation Maintenance Instructions...

Page 2: ...roduct range 1 Safety instructions 1 Dimensions and technical speci cation 3 Installation 4 First operation 5 Electronic controller 6 Safety and alarms 7 SATK20103 and SATK20203 components 8 SATK20303...

Page 3: ...e operation of the device and or system NOTE Risk of electric shock Live parts Shut off the electric supply before opening the HIU cover 1 During installation and maintenance operations always avoid d...

Page 4: ...Dimensions SATK30 A B C kg G B G B G B 16 A B C kg G B G B G B 19 550 A A B B 65 65 450 C C 59 101 160 65 190 195 430 15 490 46 10 245 110 265 110 85 A A B B 629 65 65 550 C C 159 101 160 65 290 195 5...

Page 5: ...changer brazed stainless steel Installation The SATK series HIUs are designed for installation in a sheltered domestic environment or similar therefore cannot be installed or used outdoors i e in area...

Page 6: ...ent Connection to the main supply The device is supplied with an electric supply cable plug not supplied The device should be electrically connected to a 230 V ac single phase earth mains supply using...

Page 7: ...e cover close the isolating valves empty the HIU using the drain cocks provided remove the spacer piece A remove the blanking plug B install the ow probe in the 1 4 pocket B provided install the ow me...

Page 8: ...vated the circulation pump shuts down and the and the regulating valve closes Heating cycle activation is indicated by a ashing fault LED on the electronic controller This fault does not affect the ge...

Page 9: ...d Safety valve fault Error code 76 SATK20103 LOW temperature Removing a fault Normal operating conditions are restored automatically once the faulty safety valve is working correctly again Safety sett...

Page 10: ...tic water preheating function Heating cycle modulating temperature regulation with compensated set point floor slab heating function Factory settings Components SATK20203 MEDIUM Temperature HIU Item C...

Page 11: ...ds the drying of the under oor heating screed at low temperatures This function can only be activated and executed if there are no faults It can be activated by pressing and holding the RESET button f...

Page 12: ...al load under control The thermal response time of the system is thus minimised Safety and alarms Error codes associated with faults signalled by the lighting up of the FAULT LED are also shown on the...

Page 13: ...The function is enabled by setting dip switch 5 to the ON position During periods when the domestic water cycle is not used if the DHW probe detects a temperature 10 C below the SET value the control...

Page 14: ...eturn temperature sensor 22 Pressure gauge 23 Filling loop isolation valve 24 Filling loop double check valve 25 Filling loop Not shown on Components illustration Functional characteristics SATK30103...

Page 15: ...rying of the under oor heating screed at low temperatures This function can only be activated and executed if there are no faults It can be activated by pressing and holding the RESET button for 8 sec...

Page 16: ...l maintenance procedures should be carried out by an authorised technician Regular maintenance guarantees better ef ciency and helps to save energy Before carrying out any maintenance repair or part r...

Page 17: ...the new probe Reconnect the connector respecting the only possible way it can be inserted When carrying out maintenance on the electrical system for the connections follow the diagram on page 16 Afte...

Page 18: ...HW production valve actuator x x x x Thermal safety relief valve x x Thermal safety thermostat x x Heating flow temperature probe x x x x x x x x x x x x x x x Electric supply 230 V ac x x x x x x x x...

Page 19: ...artly clogged call quali ed personnel to have it serviced modulating valve actuator faulty call quali ed personnel to have it replaced valve obturator blocked in intermediate position call quali ed pe...

Page 20: ...valves terminals closed open the valves centralised system temperature insuf cient contact person in charge of system electronic controller not working call quali ed personnel to have it replaced prim...

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