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Temperature display

Press the <temp> key repeatedly to display
the  current  ambient  temperature  set  point
and  the  temperature  values  read  by  the
three probes of the HIU.

Current  ambient  temperature  set
point (*)

Access to technical menu

Press the <mode> key repeatedly to set the
HIU to OFF status.

Heat interface unit in OFF mode

DHW probe temperature

Heating flow probe temperature

Primary return probe temperature

Hold  the  <set>,  <day/night>  and  <temp>
keys pressed together for 10 seconds.

Access to the technical parameters

Once “TSP” appears on the display, confirm
access  by  pressing  the  central  knob  <R>.
By rotating knob <R> it is possible to scroll
through  the  various  parameters,  which  can
then  be  edited,  pressing  and  rotating  knob
<R>.

Technical parameter t00

Primary  limit/set  return  temperature  in
heating mode (**)

Primary  limit/set  return  temperature  in
DHW mode (**)

Comfort function (ON/OFF or according
to weekly program) (see page 13)

(*) if the thermostat function of the remote user interface is enabled.
(**)  if  these  set  points  cannot  be  changed  you  must  set  parameter  t07  to  value  0  in  the  technical  menu  (see  “access  to  technical  menu”  below).
Parameter t07= 1 “freezes” the operating set points to prevent inadvertent modifications by the user.

To exit the menu, wait a few seconds or press the <reset> key. Re-enable the required services using the <mode> key.

Refer to the remote control user manual for the hourly programming of space heating and DHW comfort function.

(*) if the thermostat function of the remote user interface is enabled.

Summary of Contents for SATK32 Series

Page 1: ...de 10 Commissioning 9 Electrical installation 8 Hydraulic installation 5 Hydraulic components and diagram 4 Dimensions Technical specifications 3 Safety instructions 2 DHW function Comfort functions P...

Page 2: ...k must be carried out on the device cut off the electric supply first Do not use devices with automatic or time reset or which may be reset accidentally 4 Use suitable automatic protection devices in...

Page 3: ...nimum flow rate to activate domestic water flow meter 2 l min 0 3 Electric supply 230 V ac 10 50Hz Max power consumption 80 W Protection class IP 40 Pump UPM3 15 70 Actuators 24 V stepper motor Probes...

Page 4: ...be 10 Pressure gauge 11 Safety thermostat 12 130 mm heat meter template 13 1 4 F pressure test port 14 Connection for M10x1 heat meter return probe 15 Primary drain cock 16 Connection for M10x1 heat m...

Page 5: ...kflow preventer code 572120 proceed as follows remove the nuts shown in the figure with letter A Hydraulic installation Preliminary operations installation without template After having established th...

Page 6: ...tem in order to remove any residue or impurities that could endanger correct operation of the HIU In order to facilitate these operations a manual bypass flushing valve is available code 789110 N B In...

Page 7: ...pipe To tighten the nuts apply maximum tightening torque of 25 Nm taking account of the indications of the heat meter manufacturer install the flow probe in the M10 pocket B Please refer to the heat m...

Page 8: ...directed toward the exterior of the HIU using the pathways provided in the insulation and on the frame All the low voltage lines must be routed through a single dedicated cable raceway using the path...

Page 9: ...necessary restore the pre charge value shown in the technical specifications Filling the user system SATK32 series HIU can be fitted with a charging unit equipped with a backflow preventer F check va...

Page 10: ...ng modes OFF DHW only summer mode Heating DHW winter mode Heating only Selecting set points current time and comfort function Press the set key repeatedly to set the current time set point temperature...

Page 11: ...arious parameters which can then be edited pressing and rotating knob R Technical parameter t00 Primary limit set return temperature in heating mode Primary limit set return temperature in DHW mode Co...

Page 12: ...ng To set the flow temperature press the SET key until the symbol in the red circle appears for the return temperature limit press the key until the symbols in the green circle are displayed Use the R...

Page 13: ...7 1 freezes the operating set points to prevent inadvertent modifications by the user The comfort function can be alternatively preheating of the DHW plate heat exchanger or management of DHW recircul...

Page 14: ...posed by controlling the maximum opening of the primary circuit modulating valve Since latter is controlled by a differential pressure limiter it is possible to supply direct correspondence between th...

Page 15: ...es a sequence of LEDs showing the instantaneous power consumption 1 yellow LED lit power between 0 and 25 of Pmax 2 yellow LEDs lit power between 25 and 50 of Pmax 3 yellow LEDs lit power between 50 a...

Page 16: ...must be set to 1 2 4 7 This value t05 7 is set by default example 2 Distinction of consumption for DHW production from total consumption in combination with heat meter equipped with dedicated function...

Page 17: ...ire twisted cable Compliance with this requirement becomes even more significant the more extensive the RS 485 network If alternatively a shielded wire is used the shield must be connected solely on t...

Page 18: ...nd disabled Any requests to run cycles not associated to the previous one will continue to run normally Heating flow probe fault Error code 5 Domestic hot water probe fault Error code 6 Return probe f...

Page 19: ...o be interfaced with controllers managing the heating and DHW production services by means of pre paid type logic The HIU interprets an open contact as credit available Closing the contact disables th...

Page 20: ...ween 0 9 and 1 2 bar Restore the pressure value if necessary Re open the shut off valves and restore secondary circuit pressure to a value between 1 3 and 1 7 bar Check for the absence of any liquid d...

Page 21: ...tuator see previous paragraph Extract the obturator unscrewing the locking nut F Replace the obturator screw on the locking nut F and then fit the actuator Insert the fixing clip respecting the correc...

Page 22: ...r partly clogged call qualified personnel to have it serviced modulating valve actuator faulty call qualified personnel to have it replaced DHW temperature probe cable inverted with heating probe rest...

Page 23: ...in charge of system electronic regulator not working call qualified personnel to have it replaced primary circuit flow rate insufficient contact person in charge of system centralised system not work...

Page 24: ...s external sensor prepayment auxilliary microswitch Modbus if required been carried out 15 Has the remote user interface been configured for installation on board thermostat function disabled inside t...

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