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Wall-mounted compact indirect HIU - DHW production in storage cylinder
©
opyright 2016
aleffi
INSTRUCTIONS FOR INST LL TION, COMMISSIONING
Product range
Compact wall-mounted HIU for indirect heating
SATK40103HE
and DHW production in storage cylinder.
High efficiency pump.
Function
The SATK series HIU allows independent control of space heating and
domestic hot water production within centralised heating systems.
ONTENTS
Safety instructions
Dimensions
Technical specifications
Installation
Hydraulic connections
ommissioning
Electronic regulator
Operating cycles
Optional functions
Safety and alarms
haracteristic components
Functional characteristics
Electric connections
Maintenance
Troubleshooting
ommissioning check-list
1
78200 01EN
www caleffi com
SATK40 series
ND M INTEN NCE
Page
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Summary of Contents for CALEFFI SATK40 Series
- Page 1 78200 01EN www caleffi com Wall-mounted compact indirect HIU - DHW production in storage cylinder © opyright 2016 aleffi SATK40 series INSTRUCTIONS FOR INST LL TION, COMMISSIONING ND M INTEN NCE Function The SATK series HIU allows independent control of space heating and domestic hot water production within centralised heating systems.
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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. Storage flow For the updated version of the technical documentation refer to www.caleffi.com Storage return Key to symbols... - Page 3 Dimensions S TK40103HE technical specifications Medium: water Maximum percentage of glycol: Maximum medium temperature: 85°C 282,5 Max. working pressure: - primary circuit: 1,6 MPa (16 bar) - secondary circuit: 0,3 MPa (3 bar) Nominal heat exchanger capacity: 15 kW Maximum recommended primary circuit flow rate: 1,2 m Max.
- Page 4 Filling the user system SATK40 series HIUs are fitted with a filling unit equipped with a backflow preventer (A), check valve (B) and cock (C) Fitting the cover...
- Page 5 Electronic regulator User interface 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 6 Operating cycles Domestic cycle (assumes priority over the heating cycle in the default configuration) In response to a request for execution of the DHW cycle due to tripping of the storage thermostat, the regulator opens the primary circuit modulating valve fully, switches the diverter valve towards the storage circuit, and starts the circulation pump.
- Page 7 If the safety thermostat is activated during a general cycle, the The SATK40 series HIU continuously monitors the status of the heating circulation pump immediately comes to a stop and the pressure switch controlling the water pressure in the closed-circuit modulating valve is completely closed.
- Page 8 S TK40103HE HIU for DHW production in storage cylinder with high-efficiency pump Characteristic components Frame Expansion vessel Electronic regulator Electrical connections box 2-way modulating valve (primary circuit) Diverter valve Heating flow temperature probe Thermal safety thermostat Secondary heating drain cock 10.
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Page 9: Electronic Regulator
Electric connections Make sure that the electrical system can withstand the maximum power consumption of the appliance, with particular emphasis on the cross-section of the cables. If you have any doubts, contact a qualified technician to request a thorough check of the electrical system. Electrical safety of the appliance is only achieved when it is correctly connected to an effective earthing system, constructed as specified in current safety regulations. - Page 10 After concluding maintenance, proceed with the filling and - Reconnect the connector respecting the only possible way it can checking operations described in the chapter “Commissioning” on be inserted. page 4 and fit the cover. If you require any information regarding spare parts, please contact Caleffi spa.
- Page 11 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 modulating valve actuator faulty call qualified personnel to have it replaced pump not working call qualified personnel to have it replaced...
- Page 12 Commissioning check-list 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)? Has the modulating temperature regulation with compensated set point (normally off) been activated (if required)? Is the heat interface unit connected to the 230 V (ac) electric supply?