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MGS - CR
Solar controller for standard solar systems with electric afterheating
Manual for the
specialised craftsman
Mounting
Connection
Operation
Troubleshooting
Thank you for buying this product.
Please read this manual carefully to get the best performance from this unit. Please keep this manual carefully.
en
Manual
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Table of Contents
Summary of Contents for Megasun MGS - CR
- Page 1 MGS - CR Solar controller for standard solar systems with electric afterheating Manual for the specialised craftsman Mounting Connection Operation Troubleshooting Manual Thank you for buying this product. Please read this manual carefully to get the best performance from this unit. Please keep this manual carefully.
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Page 2: Table Of Contents
Safety advice Information about the product Contents Please pay attention to the following safety advice Proper usage Overview ............ 3 in order to avoid danger and damage to people and Installation ..........4 The solar controller is designed for use in standard property. -
Page 3: Overview
Overview Solar controller for standard solar systems with electric afterheating • Direct connection for electric afterheating • System-Monitoring-Display • Heat quantity measurement • Function control • Operating hours counter • Intuitive operating concept • Slide switch 0 Auto I • VBus interface ®... -
Page 4: Mounting
Installation upper fastening Mounting crosshead The unit must only be located in dry interior rooms. screw It is not suitable for installation in hazardous locations and should be protected against electromagnetic fields. The controller must additionally be supplied from a double pole switch with contact gap of at least 3 mm. -
Page 5: Electrical Connection
Depending on the product version, mains cable and sensor cables are already connected to the device. If that is not the case, please proceed as follows: MGS - CR Connect the temperature sensors (S1 to S3) to the corresponding terminals with either polarity: sensor 1 (e. -
Page 6: Terminal Allocation
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. 100 ... 240 V~ 100 ... 240 V~ max. 3 kW max. -
Page 7: Buttons
Selecting channels and adjusting values 3.3.2 Tool bar Operation Î Select the requested channel using buttons 1 and 2 Buttons Î Briefly press button 3, flashes (adjustment The controller is operated via the 3 buttons next to mode) the display.They have the following functions: Î... -
Page 8: Slide Switch
3.3.3 System screen Slide switch The system screen shows the system. The screen con- The allocated relay (see p. 13) can be manually swit- sists of several system component symbols, which are ched on (I), switched off (O) or put into automatic flashing depending on the current status of the system mode (AUTO) by means of the slide switch. -
Page 9: Control Parameters And Display Channels
Control parameters and display channels Channel overview Channel Designation Page Channel Designation Page Temperature collector DT O Switch-on difference Temperature store base DT F Switch-off difference TSTT Temperature store top SMAX Maximum store temperature h P1 Operating hours relay 1 Collector temperature limitation 11 h P2 Operating hours relay 2... -
Page 10: Display Channels
Display channels The accumulated operating hours value can be set Î Confirm the reset with the button in order back to 0. As soon as one operating hours channel is to finish the reset. Display of collector temperature selected, the symbol is displayed. - Page 11 Note: CMAX: ∆T - regulation The controller is also equipped with a non- Collector maximum DT O: adjustable emergency shutdown if the store temperature Switch-on temperature reaches 95 °C (200 °F). Adjustment range: difference 70 ... 160 °C Adjustment range: 150 ...
- Page 12 The collector minimum limitation option prevents the The antifreeze function activates the loading circuit switched on for about 30 s in order to detect the solar pump from being switched on too often at low between the collector and the store when the tempe- fluid temperature.
- Page 13 The thermostat function is deactivated, if the ther- MED%: Temperature units UNIT: mostat switch-on temperature and the thermostat concentration of antifreeze switch-off temperature are set to an identical value. in (Vol-) % Temperature unit MED% is “hidden” when Selection: °C / °F °C t1 (2, 3) O: MEDT 0 or 3 is used...
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Page 14: Troubleshooting
Troubleshooting Operating control lamp flashes red. The symbol WARNING! Electric shock! is indicated on the display and the symbol If a malfunction occurs, the tool bar symbols will dis- Upon opening the housing, live play an error code (see chap. 3.3.2). flashes. -
Page 15: Miscellaneous
Operating control lamp is permanently off. Pump starts for a short moment, switches off, The temperature difference between store and switches on again, etc. collector increases enormously during operation; the collector circuit cannot dissipate the heat. Check the power supply of the controller. Is it Temperature disconnected? difference at the cont-... - Page 16 The solar circuit pump does not work, although Stores cool down at night. Does the warm water the collector is considerably warmer than the Use the circulation circulation run for a store. Collector circuit pump with timer and very long time? pump runs during the switch-off thermos- night?
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Page 17: Sensors
VBus accessories ® Accessories Sensors Sensors DL2 Datalogger The product range includes high-precision platinum This additional module enables the acquisition and Smart Display SD3 / Large display module GA3 temperature sensors, flatscrew sensors, outdoor tem- storage of large amounts of data (such as measuring The GA3 and SD3 display modules are used for visua- perature sensors, indoor temperature sensors, cylind- and balance values of the solar system) over a long... - Page 18 Distributed by: MEGASUN 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 protected by copyright...
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