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Megasun MGS - CR, Manual, Page: 6 / 18

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Megasun MGS - CR Manual Download Page 6

en

6

2.4 

Terminal allocation

Standard solar system with electric after-
heating  with one store, one pump and three sen-
sors. Sensors S1 / S2 are also used for heat quantity 
measurement.

S1

S2

S3

100 ... 240 V~

100 ... 240 V~
max. 3 kW
max. 14 A

R1

Symbol

Description

S1

collector sensor

S2

store sensor base

S3

store sensor top

R1-A

solar pump

R2-L

mains conductor

R2-L

conductor electric immersion heater

R2-N

neutral conductor mains

R2-N

neutral conductor electric immersion 
heater
WARNING! Electric shock!

Summary of Contents for MGS - CR

Page 1: ...to get the best performance from this unit Please keep this manual carefully MGS CR Manual en Mounting Connection Operation Troubleshooting Solar controller for standard solar systems with electric a...

Page 2: ...ould be carried out CE Declaration of conformity The product complies with the relevant di rectives and is therefore labelled with the CE mark The Declaration of Conformity is avail able upon request...

Page 3: ...pply 100 240V 50 60 Hz Supply connection typeY attachment Power consumption 0 7 W standby Mode of operation type 1 B action Rated impulse voltage 2 5 kV Data interface VBus VBus current supply 35 mA F...

Page 4: ...e cover Mark the upper fastening point on the wall Drill and fasten the enclosed wall plug and screw lea ving the head protruding Hang the housing from the upper fastening point and mark the lower fas...

Page 5: ...trostatic discharge can lead to damage to electronic components Take care to discharge pro perly before touching the inside of the device Connect the VBus to the terminals marked VBus with either pola...

Page 6: ...o used for heat quantity measurement S1 S2 S3 100 240V 100 240V max 3 kW max 14 A R1 Symbol Description S1 collector sensor S2 store sensor base S3 store sensor top R1 A solar pump R2 L mains conducto...

Page 7: ...play The system monitoring display consists of three blocks channel display tool bar and system screen Channel display 3 3 1 Channel display The channel display consists of 2 lines The upper line is a...

Page 8: ...hed off O or put into automatic mode AUTO by means of the slide switch Manually OFF 0 left Manually ON I right Automatic mode Auto centre Slide switch 3 5 Flashing codes 3 5 1 System screen flashing c...

Page 9: ...EM C Collector temperature limitation 11 OCCO C Option collector cooling 11 CMAX C Maximum collector temperature 11 OCMN C Minimum limitation option 11 CMIN C Minimum collector temperature 11 OCFR C O...

Page 10: ...flow rate antifreeze concentration and the temperature difference between the refe rence sensors S1 flow and S2 return are used for determining the heat quantity delivered It is shown in kWh in the ch...

Page 11: ...ncy shutdown CEM Collector temperature limitation Adjustment range 80 200 C 170 390 F Factory setting 130 C 270 F hysteresis 10K 20 Ra If the adjusted collector emergency shutdown tempe rature CEM is...

Page 12: ...e which must be exceeded for the solar pump R1 to switch on If the temperature falls below the mini mum temperature flashing is shown Antifreeze option OCFR Antifreeze function Selection OFF ON Factor...

Page 13: ...entration in the MED channel Antifreeze type 0 water 1 propylene glycol 2 ethylene glycol 3 Tyfocor LS G LS Manual mode MAN Manual mode Adjustment range 0 1 2 Factory setting 1 In this channel one ot...

Page 14: ...of a temperature is shown on the sensor display channel 88 8 888 8 Cable is broken Check the cable Short circuit Check the cable Wrong sen sor type Allocate the sensor type correctly Disconnected tem...

Page 15: ...n again etc Temperature difference at the cont roller too small no yes Wrong position of collector sensor yes Change Ton and Toff correspondingly Mount the collector sensor at solar flow warmest colle...

Page 16: ...e store yes no Replace insulation or increase it Are the store con nections insulated yes no Insulate the connec tions Warm water outflow upwards no yes Change connection and let the water flow sidewa...

Page 17: ...ter With its standard mini USB port it enables a fast transmission of system data for processing visualising and archiving as well as the parametrisation of the controller via theVBus A full version...

Page 18: ...EGASUN MANUFACTURE CO LTD 387 388 5B 5B Block Tan Bien Ward Bien Hoa City Dong Nai province Vietnam Tel 84 613 882488 Fax 84 613 882434 Web www megasun com vn All contents of this document are protect...

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