COSMOGAS ECOTWIN Installation, Use And Maintenance Manual Download Page 8

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COSMOGAS

Ecotwin

3 - HYDRAULIC CONNECTIONS

Figure 3-3 - Main components and connection diameters of the STM13 unit

Figure 3-2 - Main components and connection diameters of the STM06 - STM09 unit

Electrical

connections cover

Refrigerant connection

(liquid line)

STM 06:1/4”

STM 09: 3/8”

Refrigerant connection

(gas line) : 1/2”

Valve cover

Refrigerant connection

(gas line) : 5/8”

Refrigerant

connection

(liquid line): 3/8”

Electrical

connections

cover

Air

Inlet

Air

Inlet

Air

Outlet

Air

Outlet

Summary of Contents for ECOTWIN

Page 1: ...62403833 R03 12 04 2021_UK INSTALLATION USE AND MAINTENANCE MANUAL ECOTWIN HEAT PUMP...

Page 2: ...Minimum clearance distances of STM outdoor unit 26 6 6 Warnings before installation 28 6 7 Choosing the installation location of GS indoor unit 28 6 8 Choosing the installation location of STM outdoo...

Page 3: ...ical system 73 10 8 Check the operation of the main switch 73 10 9 Check the temperature adjustment in heating and DHW 73 10 10 Check the good conditions and operation of the vent valves present 73 10...

Page 4: ...e collection centres R410A refrigerant This appliance contains fluorinated greenhouse gases covered by the Kyoto Protocol the installation must be carried out by an installer company authorized in acc...

Page 5: ...R HEATING COOLING CIRCUIT N 5 SENSOR EXTENSION CABLES N 1 SAFETY KIT GS STM XX 6 Heat pump with modulating heat output between 1 98 and 6 2 kW 9 Heat pump with modulating heat output between 4 33 and...

Page 6: ...ised for the following reasons to maintain high efficiency and manage the central heating system economically with low fuel consumption to achieve a high level of safety operation 2 6 Disposal The cro...

Page 7: ...ling water outlet 1 Water inlet 1 Water outlet to DHW tank 1 Electrical resistance Digital thermostat Pump Door Electrical compartment Electrical terminals Digital thermostat DHW emergency thermostat...

Page 8: ...and connection diameters of the STM06 STM09 unit Electrical connections cover Refrigerant connection liquid line STM 06 1 4 STM 09 3 8 Refrigerant connection gas line 1 2 Valve cover Valve cover Refri...

Page 9: ...ter flow switch 17 Water connection 18 T valve 19 Plate heat exchanger bracket 20 Water connection 21 Template connections 22 Cable glands connection 23 Plate heat exchanger brachet 24 Liquid line tem...

Page 10: ...ngle 9 4 way valve 10 Electrical box 11 Electrical box cover 12 Upper cover 13 Bottom cover 14 Evapo condensing battery 15 Partition 16 Right panel 17 Floor heater wire 18 Junction box cover 19 Partit...

Page 11: ...13 Partition 14 Junction box cover 15 Liquid separator 16 Suction temperature sensor 17 Compressor discharge temperature sensor 18 Compressor 19 Lower panel 20 Valve plate 21 Refrigerant connection 2...

Page 12: ...eat output However the maximum speed is only guaranteed for an outdoor temperature below 14 C in heating and between 28 C and 41 C in cooling This appliance must be connected to a heating cooling syst...

Page 13: ...heating cooling system The head available at the appliance connections is shown in the table in Figure 5 1 When sizing the system the installer must take into account these available head values to r...

Page 14: ...utdoor temperature sensor 12 Evapo condensing battery temperature sensor 13 High pressure switch 14 Compressor discharge temperature sensor 15 High pressure sensor 16 Low pressure sensor 17 Suction te...

Page 15: ...outdoor unit 44 Safety kit hydrometer safety valve and automatic air vent valve supplied with accessories 45 Heating supply 46 Return 47 DHW supply 48 3 way diverter valve DHW cooling heating 49 GS un...

Page 16: ...ommunication 17 Cooling demand 18 Heating demand 20 Circuit 1 sensor TV1 22 Room temperature sensor Tr 23 Heating Cooling thermoregulation sensor Tc 24 DHW temperature sensor Tw 27 Filter 28 Different...

Page 17: ...eating operation and if previously enabled alsoenable P1for coolingoperation pumpP1isnotpresent but for ECOTWIN work it must in any case be enabled 9 Exit from WATER PUMPS and select DHW 10 Set the DH...

Page 18: ...ng electrical resistance 13 Modbus communication 17 Cooling demand 18 Heating demand 20 Circuit 1 temperature sensor TV1 22 Room temperature sensor Tr 23 Heating Cooling thermoregulation sensor Tc 24...

Page 19: ...m WATER PUMPS and select DHW 10 Set the DHW setpoint temperature in Setpoint DHW parameter 11 Exit this men and enter to ZONE 1 men a If the cooling function is enabled select Set temp for cooling fix...

Page 20: ...temperature sensor TV1 22 Room temperature sensor Tr 23 Heating Cooling thermoregulation sensor Tc 24 DHW temperature sensor Tw 25 Jumper 26 Connect to terminals TA of the boiler 27 Filter 29 Solar o...

Page 21: ...1 men a If the cooling function is enabled select Set temp for cooling fix flow water temperature and set the setpoint temperature b If you want to adjust the heating temperature via outdoor reset se...

Page 22: ...r 26 Connect to terminals TA of the boiler Figure 5 10 Hydraulic diagram with double heating cooling circuit DHW buffer tank and boiler 27 Filter 29 Solar optional 30 Domestic cold water 32 DHW buffer...

Page 23: ...ng operation e se necessita metterla anche a P2 for cooling operation 9 Exit the WATER PUMPS men and select DHW 10 Set the DHW setpoint temperature in Setpoint DHW parameter 11 Exit this men and selec...

Page 24: ...tat 42 Be called in heating cooling on Circuit 1 by closing the room thermostat 42 and input 19 Switch between heat pump and boiler when the outside temperature drops below a certain value The closure...

Page 25: ...indoor unit dimensions Figure 6 1 shows the overall dimensions of the indoor unit useful for installation purposes 6 INSTALLATION Figure 6 2 Minimum clearance distances of GS indoor unit 500mm 100mm...

Page 26: ...r correct installation observe the instructions highlighted in section 6 8 For installation maintenance and especially for proper ventilation it is necessary to leave free spaces around the outdoor un...

Page 27: ...Figure 6 5 STM 06 and 09 outdoor unit dimensions Figure 6 6 STM 13 outdoor unit dimensions 6 5 STM outdoor unit dimensions Figures 6 5 and 6 6 show the overall dimensions of the outdoor units useful f...

Page 28: ...t is a source of noise For the installation of the outdoor unit it is good to keep in mind some first information No obstacles must prevent the free circulation of air around the outdoor unit Figure 6...

Page 29: ...e drainage of rainwater Convey the condensate drain connection to a suitable drain with siphon see Figure 6 9 Figure 6 8 Mounting the drainage fitting A 020031 01 003 6 8 1 Mounting the appliance Obse...

Page 30: ...heat output 10 kW the amount of water circulating in the system should be at least 10 l kW 100 liters If the machine is to perform only the heating and or cooling service without DHW production the Wa...

Page 31: ...s the positioning of the domestic hot and cold water pipes Provide a shut off valve upstream of the cold water inlet useful for maintenance work WARNING The domestic hot water circuit must be made of...

Page 32: ...nt connection of at least 2 m making one or two horizontal rings to limit these disturbances Figure 6 10 Distances between outdoor and indoor unit A Indoor unit B Outdoor unit C Curves max number of c...

Page 33: ...oor unit must be mounted on a wall according to the following instructions 1 Take the expansion plugs and mounting bracket from the accessories Place the mounting bracket on the wall in the desired po...

Page 34: ...ocated on the upper side of the indoor unit Figure 6 12 2 Connect the drain pipe to the safety valve outlet Figure 6 13 3 Through the existing holes in the upper part let the drain pipe enter the indo...

Page 35: ...of R410A gas b Perfectly insulate the pipe before connection c Check the joints to avoid leaks d Avoid excessive bending of the pipe to ensure smooth circulation of the refrigerant Figure 6 14 e Dry t...

Page 36: ...ected as in Figure 6 18 6 Proceed to check the tightness of the refrigerant circuit as per section 6 16 2 62403796 01 006 Figure 6 16 Refrigerant circuit connections Figure 6 17 Tightening torque of r...

Page 37: ...door unit and vacuum pump connection LEGEND of Figure 6 19 D Tap cap C Outdoor unit charging port E Vacuum pump F Vacuum gauge 6 INSTALLATION Figure 6 18 Refrigerant connection between indoor and outd...

Page 38: ...ssure reached 2 Turn on the vacuum pump and let it act for about an hour Check that the vacuum degree reached is less than 0 5 mbar 3 Close the vacuum pump valve and check that the residual pressure o...

Page 39: ...uld occur in a short time WARNING This appliance has no protection against the effects caused by lightning WARNING The product is equipped with devices controlled via low voltage communication BUS for...

Page 40: ...temperature rise reading interval HWTBH parameter according to the use of the resistance 5 Not applicable 6 Pump P1 To enable circulator P1 access the menu WATER PUMPS section 8 2 11 and act on the p...

Page 41: ...r temp as they have priority over external contact 18 Heating demand It is enabled by going to the WORKING MODE menu section 8 2 9 in the Heating cooling switch parameter and selecting External signal...

Page 42: ...lectrical supply to the STM outdoor unit must be given by passing through the GS indoor unit To do this proceed as follows 1 Remove the casing of the indoor unit section 10 24 2 Remove the electrical...

Page 43: ...cable to terminals A and B of the indoor unit detail E 7 Access the terminal block of the outdoor unit Figure 6 23 8 Strip the cable 9 Connect the cable to terminals A and B of the indoor unit respec...

Page 44: ...not subject to sudden changes in temperature away from windows or doors that give directly to the outside see Figure 6 24 To connect the room thermostat cable proceed as follows 1 The first thermostat...

Page 45: ...e fittings 2 Check that the air vent valve is open 3 Vent the heating elements 7 2 Emergency operation WARNING Emergency operation only guarantees the domestic hot water function in the event that the...

Page 46: ...e can modify them 4 Select Permission level and enter the password 8 7 6 5 4 3 2 1 5 Go to the WORKING MODE men section 8 2 9 and activate the parameters according to the characteristics of the applia...

Page 47: ...ith alternative source detail 11 Figure 6 22 Cooling DHW 1 DHW with integrative electrical resistance detail 35 Figure 6 22 2 DHW with alternative source detail 9 Figure 6 22 C Functions is the symbol...

Page 48: ...section 8 2 I Automatic operating mode By automatic operating mode we mean that the domestic hot water always has priority over heating or cooling and the latter follow the logics according to the re...

Page 49: ...To access the Settings menu press the H icon in Figure 8 1 The menu will consist of two pages that can be scrolled using the two arrows at the bottom right and left see Figure 8 3 On each page there a...

Page 50: ...Not selected Outdoor temp 1 HC Winter End user C 25 25 5 Outdoor temp 2 HC Spring End user C 25 25 20 Outdoor temp 3 HC Don t change End user C 25 25 43 Outdoor temp 4 HC Don t change End user C 25 2...

Page 51: ...nd user C 26 37 32 Outdoor temp 3 CC Summer End user C 33 40 38 Water outdoor temp 1 CC1 Don t change End user C 18 40 23 Water outdoor temp 2 CC1 Spring End user C 18 40 21 Water outdoor temp 3 CC1 S...

Page 52: ...ser C 20 55 37 Water Outdoor temp 3 HC2 Don t change End user C 20 55 22 Water Outdoor temp 4 HC2 Don t change End user C 20 55 21 Water Outdoor temp 5 HC2 Don t change End user C 20 55 20 High temper...

Page 53: ...these values do not give a satisfactory result proceed with the appropriate modifications taking into account that Each parameter must be adjusted in small degrees After each variation wait at least 2...

Page 54: ...Ecotwin 8 USE Figure 8 7 Cooling outdoor reset 6 14 8 350012_b 16 18 20 22 24 10 12 26 28 30 32 34 36 38 40 42 Outdoor temperature C Supply temperature C Outdoor temp 2 Outdoor temp 3 Water temp C Wa...

Page 55: ...DHW condi tioned priority Over this outdoor temperature value the DHW priority is total respect to the heating function End user C 15 20 15 Sanitary water min working time minutes Minimum DHW working...

Page 56: ...storage timer Don t change End user Reheating function Don t change End user Selected Not selected Not selected Reheating function timer Don t change End user Reheating set temp Don t change End user...

Page 57: ...t operation In this mode fans and compressor run at a reduced speed to limit noise at the expense of the overall efficiency of the system End user Selected Not selected Not selected Max allowable temp...

Page 58: ...ater temp drop during vacation Reduction of the domestic hot water temperature in the period set in the parameters Vacation start date and Vacation finish date of this men End user C 10 50 20 Heating...

Page 59: ...nd user End user Heating cooling ON OFF timer Enabling or disabling the timer for switching on and off the heating cooling This function has priority over the digital inputs 17 and 18 in Figure 6 22 E...

Page 60: ...Not selected Not selected Basic operation mode Don t change Installer Selected Not selected Not selected Max duration for min compressor speed Installer Min 5 60 5 Heating cooling switch Installer OFF...

Page 61: ...alue HBH Resistance demand algorithm 9 or 11 in Figure 6 22 The lower the value the external resistance is called sooner End user 0 600 240 Water temperature rise reading interval HWTBH Check interval...

Page 62: ...of circulation pump P0 Installer Min 5 60 15 Pump ON time for P0 see Interval working mode of the para meter Working mode of circulation pump P0 Installer Min 1 10 2 Buffer tank Enabling or not the bu...

Page 63: ...nd modify all the parameters relating to the lock function Parameter Permission level U M Range Factory setting Costum value Electrical utility lock N A End user Selected Not selected Not selected Ele...

Page 64: ...utdoor temperature threshold for activating the anti freeze cycle which is carried out by switching on the pump only WARNING Should there be this risk we recommend not cutting off the power supply and...

Page 65: ...00 Defrosting Logic Selection Don t change Installer 0 2 0 Activate Wifi module or not N A Installer Selected Not selected Not Selected Accept setting from Wifi module N A Installer Selected Not selec...

Page 66: ...g Heating water temp TC Installer C Water flow rate N A Compressor working speed Installer Hz EEV opening number of opening steps of the expansion valve Installer P Average outdoor temp in 1 hour Inst...

Page 67: ...return to the home page 8 USE Figure 8 22 Info icon Figure 8 23 Page 1 Figure 8 24 Page 2 Figure 8 25 Page 3 Figure 8 26 Page 4 Figure 8 27 Home page icon Tuo Supply water temperature Tui Return wate...

Page 68: ...eplace the sensor F04 Failure of the compressor suction temperature sensor Compressor stopped Check that the sensor is not shorted open and that it is not giving wrong values If necessary replace the...

Page 69: ...he circulator is not broken F29 Error on mixing valve 1 Active unit mixing valve 1 blocked at 0 Check the wiring of mixing valve 1 check the output signal voltage from the PCB board check that the val...

Page 70: ...ount of refrigerant is not enough and this results in too low a pressure Check that the fan and pump motor work correctly Check that the evapo condensing battery or the plate heat exchanger are not bl...

Page 71: ...to error S2 water flow too low 3 times in a certain period of time it will re lock and S10 will appear Remove and restore the electrical supply to reset the error Check the hydraulic circuit especiall...

Page 72: ...OOR UNIT Check the water pressure in the system and there are no leaks Follow section 10 3 Check the good condition of the safety valve Follow section 10 4 Check and clean the safety exhaust valve sys...

Page 73: ...e switch 10 9 Check the temperature adjustment in heating and DHW 1 Check the relationship between the regulated temperature and the actual one obtained in heating and DHW mode 2 If the temperatures d...

Page 74: ...the water from the heating circuit 2 Access the internal components of the device following section 10 24 3 Extract the pump towards the outside 4 Disconnect the electrical wires from the pump body 10...

Page 75: ...e 10 MAINTENANCE Figure 10 1 Dismantling the casing and access to the internal components 10 25 Remove the casing and access to the internal components of the STM To remove the casing proceed as follo...

Page 76: ...TV1 13 Room temperature sensor Tr 14 Heating Cooling temperature sensor Tc 2 1 3 4 5 6 7 GND VCC PG N P PG V COMADJ PE N L PE N1 L1 N1 N11 L1 L11 KM1 3 3 L 3 2 L 3 1 L 3 N E P 2 3 L 2 2 L 2 1 L 2 N E...

Page 77: ...TUO TUI TUP TSI TSO CN215 WATER ES CS HS TH COM CN213 CN217 485 1 CN216 F0 RE1 RE2 CN207 COM OPEN CLOSE T2 T1 TV2 TV1 TR TC TW CN211 NTC 5K PT1000 t t t t t NTC 5K NTC 5K PT1000 15 DHW temperature sen...

Page 78: ...Compressor wire heater 8 4 way valve 10 Fan 11 High pressure switch 13 Gas side control board 14 Low pressure sensor 15 High pressure sensor 16 Compressor discharge temperature sensor 17 Evapo condens...

Page 79: ...ressure switch 13 Gas side control board 14 Low pressure sensor 15 High pressure sensor 16 Compressor discharge temperature sensor 17 Evapo condensing battery temperature sensor 18 Outdoor temperature...

Page 80: ...ooling Hz 85 66 79 Fan Quantity 1 1 2 Air flow m h 3000 3000 4200 Nominal power W 60 60 120 Noise level Internal external dB A 35 56 35 56 35 59 Refrigerant connection Liquid Gas 1 4 1 2 3 8 1 2 3 8 5...

Page 81: ...Water inlet outlet 50 55 C 6 9 13 Te Heating heat output COP Heating heat output COP Heating heat output COP 7 3 40 1 90 5 50 1 50 7 10 1 90 2 4 70 2 29 6 90 1 90 9 40 2 30 7 4 80 2 39 8 40 2 20 9 80...

Page 82: ...compliance with Energy Related Products directive 2009 125 CE Electromagnetic compatibility directive 2014 30 UE Low Voltage Directive 2014 35 UE Regulation UE N 2017 1369 Ecodesign requirements regu...

Page 83: ...limit temperature Pdh 4 711 kW Tj operating limit temperature COPd 2 39 for air water heat pump Tj 15 C se TOL 20 C Pdh kW for air water heat pump Tj 15 C se TOL 20 C COPd Bivalent temperature Tbiv 7...

Page 84: ...ting limit temperature Pdh 5 15 kW Tj operating limit temperature COPd 2 27 for air water heat pump Tj 15 C se TOL 20 C Pdh kW for air water heat pump Tj 15 C se TOL 20 C COPd Bivalent temperature Tbi...

Page 85: ...2 74 Tj operating limit temperature Pdh 7 164 kW Tj operating limit temperature COPd 2 5 for air water heat pump Tj 15 C se TOL 20 C Pdh kW for air water heat pump Tj 15 C se TOL 20 C COPd Bivalent te...

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Page 88: ...COSMOGAS s r l Via L da Vinci 16 47014 MELDOLA FC ITALY info cosmogas com www cosmogas com...

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