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Operating Guide
Termix VVX Compact 28/18 - 7 Series BS-HC
1.0 Table of Contents
1.0 Table of Contents ............................................. 1
2.0 Functional description...................................... 2
3.0 Safety notes..................................................... 3
3.1
Safety Notes - general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.0 Mounting ........................................................ 4
4.1
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.2
Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3
Electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.0 Design............................................................. 10
5.1
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.0 Controls .......................................................... 12
6.1
Heating circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.2
DHW temperature control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3
Other. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.4
Extras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.5
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.0 Troubleshooting .............................................. 21
7.1
Troubleshooting in general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.2
Troubleshooting DHW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.3
Troubleshooting HE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.4
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.0 Declaration...................................................... 27
8.1
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
LGB42404
DEN-GT
1
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Table of Contents
Troubleshooting
Related Manuals for Danfoss Termix VVX Compact 28/18 - 7 BS-HC Series
Summary of Contents for Danfoss Termix VVX Compact 28/18 - 7 BS-HC Series
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Page 1: Table Of Contents
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 1.0 Table of Contents 1.0 Table of Contents ..........1 7.0 Troubleshooting ..........21 Troubleshooting in general ........21 Troubleshooting DHW . -
Page 2: Functional Description
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 2.0 Functional description District heating substation for indirect heating and instantaneous domestic hot water. Application The Termix VVX Compact 28 is a complete solution for hot water and space heating with optimal safety, efficient energy transfer, service-friendly construction and a compact design. -
Page 3: Safety Notes
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 3.0 Safety notes 3.1 Safety Notes – general The following instructions refer to the standard design of substation. Special versions of substations are available on request. Authorized personnel only This operating manual should be read carefully before installation Assembly, start-up and maintenance work must be performed by and start-up of the substation. -
Page 4: Mounting
Assembly, start-up and maintenance work must be performed by primary supply to Danfoss substations. For the sake of simplicity, qualified and authorized personnel only. DH can be taken to mean the primary supply. - Page 5 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 4.1.1 Installation Mounting: Adequate space Please allow adequate space around the substation for mounting and maintenance purposes. Orientation The station must be mounted so that components, keyholes and labels are placed correctly. If you wish to mount the station differently please contact your supplier.
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Page 6: Start-Up
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 4.2 Start-up Start-up, Indirect heating Filling: Re-tighten connections 1: First fill After water has been added to the system and the system has been When carrying out first fill, the heat exchanger must be slowly filled put into operation, re-tighten ALL connections. -
Page 7: Electrical Connections
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC Under floor heating: Pump stop function If the substation is used in connection with under floor heating, the circulation pump must be connected to the pump stop function in the under floor heating controller. The pump must be stopped if all under floor heating circuits are closed. - Page 8 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 4.3.2 IMIT Thermostat IMIT Thermostat The IMIT Thermostat is used to limit the underfloor heating flow temperature. The IMIT Thermostat is preset to 60 °C, shutting off the pump and the primary on/off valve when the flow to the underfloor heating exceeds 60 °C.
- Page 9 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 4.3.3 Wiring diagram Radiator heating Underfloor heating LGB42404 DEN-GT...
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Page 10: Design
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 5.0 Design 5.1 Design Your substation might look different than the substation shown. Design description 25 Pressure gauge with ball valve Heat exchanger, HE 7B Thermostatic valve, DHW Strainer 26 Pressure gauge Heat exchanger, DHW M Electrical wiring box 10 Circulator pump... -
Page 11: Schematic Diagram
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 5.2 Schematic diagram Supply Supply Return Return Your substation might look different than the schematic diagram shown. Schematic description 25 Pressure gauge with ball valve Heat exchanger, HE Strainer 10 Circulator pump 26 Pressure gauge Heat exchanger, DHW M Electrical wiring box... -
Page 12: Controls
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 6.0 Controls 6.1 Heating circuit 6.1.1 Differential pressure controller The differential pressure controller smooths out the fluctuations in pressure arriving from the district heating network. The operating pressure in the substation is thus held steady. 6.1.2 HE temperature control The HE flow temperature in the heating circuit is controlled by the HE temperature controller. - Page 13 The controller is a self-acting flow controller with integrated control valve. The controller closes when set max. flow is exceeded and can be used in combination with Danfoss electrical actuators with or with out safety function. Spring return motor can be used as safety function by power failure.
- Page 14 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 6.1.7 Electric 2–way motorized valve Actuators with or without safety function are available for 3-point controls. Spring-return actuators can be used to provide safety shut-off in the event of power failure. 6.1.8 Electronic control Substations with electronic control must be set in accordance with manufacturer´s instructions.
- Page 15 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 6.1.10 TP7001 TP7001 electronic 7 day programmable room thermostat. Signals from the room thermostat can be used to control zone valves. 6.1.11 Circulator pump UPM3 UPM3 Pumps can be controlled in constant pressure, proportional pressure or constant speed mode defined by the means of a smart user interface.
- Page 16 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 6.1.12 Grundfos UPM3 AUTO L instructions Control mode You can switch from the performance view to the settings view by pressing the push button. The settings view shows which mode controls the circulator.
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Page 17: Dhw Temperature Control
The controller is a self-acting flow controller with integrated control valve. The controller closes when set max. flow is exceeded and can be used in combination with Danfoss electrical actuators with or with out safety function. Spring return motor can be used as safety function by power failure. -
Page 18: Other
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 6.2.3 Electric 2–way motorized valve Actuators with or without safety function are available for 3-point controls. Spring-return actuators can be used to provide safety shut-off in the event of power failure. 6.3 Other 6.3.1 Safety valve The purpose of the safety valve is to protect the substation from... - Page 19 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 6.3.3 Fitting piece The substation is equipped with a fitting piece for energy meter. Assembly of energy meters: 1: Close ball valves Close the ball valves on DH Supply and DH Return, if there is water on the system.
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Page 20: Extras
Venting Checking that the system is thoroughly vented. Inspections should be carried out minimum every two years. Spare parts can be ordered from Danfoss. Please ensure that any enquiry includes the substation serial number. DEN-GT LGB42404... -
Page 21: Troubleshooting
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 7.0 Troubleshooting 7.1 Troubleshooting in general In the event of operating disturbances, the following basic features should be checked before carrying out actual troubleshooting: • the substation is connected to electricity, Authorized personnel only •... -
Page 22: Troubleshooting He
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 7.3 Troubleshooting HE Problem Possible cause Solution Too little or no heat. Insufficient credit on the pre-payment unit, Top up your credit. if installed. Strainer clogged in DH or HE circuit Clean gate/strainer(s). -
Page 23: Disposal
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC DH supply temperature too low. Adjust automatic controls – see instructions Wrong setting of automatic controls, if any. for automatic controls. Defective controller. The controller does Call in automatic controls manufacturer or not react as it should according to the replace controller. - Page 24 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC DEN-GT LGB42404...
- Page 25 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC LGB42404 DEN-GT...
- Page 26 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC DEN-GT LGB42404...
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Page 27: Declaration
Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC 8.0 Declaration 8.1 Declaration of conformity Category 0 with electrical equipment LGB42404 DEN-GT... - Page 28 Operating Guide Termix VVX Compact 28/18 – 7 Series BS-HC Produced by Gemina Termix A/S © 04/2018...
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