CALEFFI SATK30 Series Instructions For Installation, Commissioning And Maintenance
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CALEFFI SATK30 Series Instructions For Installation, Commissioning And Maintenance

Wall-mounted compact indirect heat interface unit
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Wall-mounted compact indirect heat interface unit
INSTRUCTIONS FOR INSTALLATION, COMMISSIONING AND MAINTENANCE
Product range
SATK30103HE Indirect wall-mounted compact HIU for
instantaneous domestic hot water production,
power capacity 40 kW.
SATK30105HE Indirect wall-mounted compact HIU for
instantaneous domestic hot water production,
power capacity 65 kW.
Function
The SATK series HIU allows independent control of heat regulation and
domestic hot water production within centralised heating systems or
served by district heating networks.
CONTENTS
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78232 01EN
www.c leffi.com
SATK30 series
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  • Page 1: Table Of Contents

    78232 01EN www.c leffi.com Wall-mounted compact indirect heat interface unit SATK30 series INSTRUCTIONS FOR INSTALLATION, COMMISSIONING AND MAINTENANCE Function The SATK series HIU allows independent control of heat regulation and domestic hot water production within centralised heating systems or served by district heating networks.

  • Page 2: Safety Instructions

    3 All hydraulic connections must be checked before pressurising the system. Vibration during transport may cause the connections to become loose. DO NOT APPLY EXCESSIVE TIGHTENING TORQUE otherwise the components may be damaged. For the updated version of the technical documentation refer to www.caleffi.com. LE VE THIS M NU L S REFERENCE GUIDE FOR THE USER.

  • Page 3: Dimensions

    Dimensions SATK30103HE SATK30105HE 292,5 298,5 FAULT FAULT 3/4” M 1/2” M 3/4” F Technical specifications S TK30105HE Technical specifications S TK30103HE Medium: water Medium: water Maximum percentage of glycol: Maximum percentage of glycol: Maximum medium temperature: 85°C Maximum medium temperature: 85°C Max.

  • Page 4: Installation

    Connection to the main supply Installation The device is supplied with an electric supply cable which is not The SATK series HIU is designed for installation in a sheltered fitted with a plug. domestic environment (or similar), therefore cannot be installed or The device should be electrically connected to a 230 V (ac) single- used outdoors, i.e.
  • Page 5 Hydraulic connections Hydraulic connections to the centralised line must be implemented using the manual shut-off valves supplied with the HIU, which allow any necessary maintenance work to take place without having to empty the centralised system. It is advisable to install manual shut-off valves (not supplied) also on the bottom connections to the apartment circuits.

  • Page 6: Commissioning

    (Volt free connection) (Schoon contact) Filling the user system SATK30 series HIU are fitted with a filling unit equipped with a backflow preventer (C), check valve (D) and cock (A). When filling the system for the first time or for subsequent top-up...

  • Page 7: Electronic Regulator

    User interface Electronic regulator The user interface, built into the PCB, consists of the following devices: • LED indicator The various functions and faults are signalled by either flashing or steady illumination of the LEDs. - Electric supply 230 V (ac) - Domestic cycle - Heating cycle FAULT - Fault detected...

  • Page 8: Operating Cycles

    Operating cycles Domestic cycle This cycle always takes priority over the heating cycle. When DHW cycle activation is requested, due to DHW tapping by the user (detected by the domestic water flow meter), the regulator modulates the valve opening in order to adjust the temperature detected by the domestic water probe to the selected set point value.

  • Page 9: Safety And Alarms

    Safety thermostat cut-out Safety and alarms Error code 69 Error codes associated with faults signalled by illumination of the FAULT LED are also shown on the display. Heating circuit pressure switch fault Error code 4 The HIUs configured to support low temperature heating continuously monitor the safety thermostat controlling the flow temperature.

  • Page 10: Satk30103He

    S TK30103H Indirect HIU with high-efficiency pump. 40 kW DHW. Characteristic components Frame Expansion vessel Electronic regulator 2-way modulating valve (primary heating) Heating flow temperature probe (secondary) DHW heat exchanger 2-way modulating valve - DHW Thermal safety thermostat DHW temperature probe 10.

  • Page 11: Satk30105He

    S TK30105H Indirect HIU with high efficiency pump. 65 kW DHW. Characteristic components Frame Expansion vessel Electronic regulator 2-way modulating valve (primary heating) Heating flow temperature probe (secondary) DHW heat exchanger 2-way modulating valve - DHW Thermal safety thermostat Secondary heating drain cock 10.

  • Page 12: Maintenance

    “Commissioning” and fit the cover. Vessel pre-charge check If you require any information regarding spare parts, please contact For correct operation of the system periodically check (at least Caleffi spa. once every six months) the vessel pre-charge value.

  • Page 13: Electric Connections

    Electric connections DHW temperature probe DHW priority flow meter Flow temp. compensation return probe DHW production valve actuator Thermal safety thermostat Pressure switch Heating flow temperature probe Heating valve actuator Earth Pump Electric supply 230V (ac)* Room thermostat* Fuse HIU enabling FUSE 5x20 * Wiring to be made during installation (Room thermostat not supplied)

  • Page 14: Troubleshooting

    Troubleshooting FAULT DESCRIPTION INDICATIONS POSSIBLE CAUSE OF FAULT OPERATIONS TO BE PERFORMED primary circuit shut-off valves closed open the valves modulating valve actuator connector disconnected reconnect actuator connector modulating valve actuator disconnected from valve body reconnect actuator call qualified personnel to have it modulating valve actuator faulty replaced DHW temperature probe cable inverted with heating...
  • Page 15 FAULT DESCRIPTION INDICATIONS POSSIBLE CAUSE OF FAULT OPERATIONS TO BE PERFORMED heating cycle temperature set point too low increase set point check programming of chrono-thermostat temperature setting incorrect chrono-thermostat call qualified personnel to have it HIU strainer clogged serviced call qualified personnel to have it heating valve actuator faulty replaced call qualified personnel to have it...

  • Page 16: Commissioning Checklist

    Commissioning checklist Checks to be performed Is the heat interface unit properly secured to the wall? Has the system flushing been carried out? Check strainers and clean them if necessary Is the heat meter (if present) connected? Is the heat meter (if present) connected to the building datalogger (if required)? Is the DCW line fitted with a pressure reducing valve? Is the system protected by water hammer arresters? Has the domestic exchanger pre-heating function (normally off) been activated (if required)?

This manual is also suitable for:

Satk30103heSatk30105he

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