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Operating Guide
Termix VVX-B - 7 Series BS
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.3
Other. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.4
Extras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.5
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.0 Troubleshooting .............................................. 20
7.1
Troubleshooting in general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2
Troubleshooting DHW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3
Troubleshooting HE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.4
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.0 Declaration...................................................... 23
8.1
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
LGB40404
DEN-GT
1
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Table of Contents
Troubleshooting
Related Manuals for Danfoss Termix VVX-B-7 BS Series
Summary of Contents for Danfoss Termix VVX-B-7 BS Series
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Page 1: Table Of Contents
Operating Guide Termix VVX-B – 7 Series BS 1.0 Table of Contents 1.0 Table of Contents ..........1 7.0 Troubleshooting ..........20 Troubleshooting in general ........20 Troubleshooting DHW . -
Page 2: Functional Description
The domestic hot water is prepared in the heat exchanger and the temperature is regulated with a thermostatic control valve. The patented sensor accelerator accelerates the closing of the Danfoss AVTB valve and protects the heat exchanger against overheating and lime scale formation. The sensor accelerator helps to ensure a stable hot water temperature by varying loads, flow temperatures and differential pressure without the need for readjusting the valve. -
Page 3: Safety Notes
Operating Guide Termix VVX-B – 7 Series BS 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-B – 7 Series BS 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-B – 7 Series BS 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-B – 7 Series BS 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-B – 7 Series BS 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-B – 7 Series BS 4.3.3 Wiring diagram Radiator heating Underfloor heating LGB40404 DEN-GT...
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Page 10: Design
Operating Guide Termix VVX-B – 7 Series BS 5.0 Design 5.1 Design Your substation might look different than the substation shown. Design description A Heat exchanger, HE 38 Expansion tank Strainer B Heat exchanger, DHW 10 Circulator pump 41 Fitting piece, energy meter 20 Filling/drain valve 48 Air vent, manual Safety valve... -
Page 11: Schematic Diagram
Operating Guide Termix VVX-B – 7 Series BS 5.2 Schematic diagram Mounting rail Supply Supply Return Return Your substation might look different than the schematic diagram shown. Schematic description Strainer Heat exchanger, HE Differential pressure controller Heat exchanger, DHW 10 Circulator pump Expansion tank 14 Sensor pocket, energy meter Border of delivery... -
Page 12: Controls
Operating Guide Termix VVX-B – 7 Series BS 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-B – 7 Series BS 6.1.7 Electronic control Substations with electronic control must be set in accordance with manufacturer´s instructions. Where the room temperature is controlled by radiator thermostats, it is recommended that thermostats be set for minimum temperature in each room.
- Page 15 Operating Guide Termix VVX-B – 7 Series BS 6.1.10 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. The variable speed modulating modes allow the pump to match its performance to the system requirements, helping to reduce noise when thermostatic valves are closing down.
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Page 16: Dhw Temperature Control
6.2 DHW temperature control DHW temperature control There are various types of DHW temperature control used in Danfoss substations. DHW temperature should be adjusted to 45-50 °C, as this provides optimal utilisation of DH water. At DHW temperatures above 55 °C, the possibility of lime scale deposits increases significantly. -
Page 17: Other
Operating Guide Termix VVX-B – 7 Series BS 6.3 Other 6.3.1 Safety valve The purpose of the safety valve is to protect the substation from excessive pressure. The blow-off pipe from the safety valve must not be closed. The blow-off pipe outlet should be placed so that it discharges freely and it is possible to observe any dripping from the safety valve. -
Page 18: Extras
Operating Guide Termix VVX-B – 7 Series BS 6.3.4 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. -
Page 19: Maintenance
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. LGB40404 DEN-GT... -
Page 20: Troubleshooting
Operating Guide Termix VVX-B – 7 Series BS 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 21: Troubleshooting He
Operating Guide Termix VVX-B – 7 Series BS 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). (radiator circuit). -
Page 22: Disposal
Operating Guide Termix VVX-B – 7 Series BS 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 23: Declaration
Operating Guide Termix VVX-B – 7 Series BS 8.0 Declaration 8.1 Declaration of conformity Category 0 with electrical equipment LGB40404 DEN-GT... - Page 24 Operating Guide Termix VVX-B – 7 Series BS Produced by Gemina Termix A/S © 03/2018...
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