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Installation Guide
Termix VMTD-F-B
1.0 Table of Contents
1.0 Table of Contents ............................................. 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Functional description...................................... 3
3.0 Safety notes..................................................... 4
3.1
Safety Notes - general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.0 Mounting ........................................................ 5
4.1
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2
Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3
Electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.0 Design............................................................. 8
5.1
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.0 Controls .......................................................... 10
6.1
Heating circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2
DHW temperature control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.3
Other. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.4
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.0 Troubleshooting .............................................. 15
7.1
Troubleshooting in general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.2
Troubleshooting DHW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.3
Troubleshooting HE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.4
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.0 Declaration...................................................... 19
8.1
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Danfoss District Energy
VI.CW.C3.02 / LUK40110
DEN-GT
1
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Summary of Contents for Danfoss Termix VMTD-F-B
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Page 1: Table Of Contents
Installation Guide Termix VMTD-F-B 1.0 Table of Contents 1.0 Table of Contents ..........1 ............... . 2 2.0 Functional description........ - Page 2 Installation Guide Termix VMTD-F-B Danfoss District Energy DEN-GT VI.CW.C3.02 / LUK40110...
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Page 3: Functional Description
District heating substation for direct heating and instantaneous domestic hot water. Application The Termix VMTD-F-B is a complete solution with built-in water heater and a differential pressure controlled heatingsystem. Termix VMTD-F-B is applicable for single and multi-family houses and for decentralized systems. -
Page 4: Safety Notes
Installation Guide Termix VMTD-F-B 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 5: 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 6: Start-Up
Installation Guide Termix VMTD-F-B 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. -
Page 7: Electrical Connections
Installation Guide Termix VMTD-F-B 4.3 Electrical connections Before making electrical connections, please note the following: Safety notes Authorized electrician Please read the relevant parts of the safety notes. Electrical connections must be made by an authorized electrician only. 230 V Local standards The substation must be connected to 230 V AC and earth. -
Page 8: Design
Installation Guide Termix VMTD-F-B 5.0 Design 5.1 Design Your substation might look different than the substation shown. Design description B Heat exchanger, DHW Sensor pocket, energy meter O Termix sensor accelerator Differential pressure controller 41A Fitting piece, cold water mains... -
Page 9: Schematic Diagram
Installation Guide Termix VMTD-F-B 5.2 Schematic diagram Supply Supply Return Return Your substation might look different than the schematic diagram shown. Schematic description B Heat exchanger, DHW Differential pressure controller Thermostatic valve, DHW 41A Fitting piece, cold water mains Strainer... -
Page 10: Controls
Installation Guide Termix VMTD-F-B 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 TP7000 TP7000 electronic 7 day programmable room thermostat. -
Page 11: Dhw Temperature Control
Installation Guide Termix VMTD-F-B 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 12 Installation Guide Termix VMTD-F-B 6.3.2 Strainer Strainers should be cleaned regularly by authorized personnel. The frequency of cleaning would depend on operating conditions and the manufacturer’s instructions. 6.3.3 GTU Pressure Equalizer The GTU Pressure Equalizer absorbs the expansion on the secondary side of the Termix water heaters and can be used as a substitute to the safety valve.
- Page 13 Installation Guide Termix VMTD-F-B 6.3.5 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 14: 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. Danfoss District Energy DEN-GT... -
Page 15: Troubleshooting
Installation Guide Termix VMTD-F-B 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 • the strainer on the DH supply pipe is clean, Assembly, start-up and maintenance work must be performed by qualified and authorized personnel only. -
Page 16: Troubleshooting He
Installation Guide Termix VMTD-F-B 7.3 Troubleshooting HE Problem Possible cause Solution Too little or no heat. Strainer clogged in DH or HE circuit Clean gate/strainer(s). (radiator circuit). The filter in the energy meter on DH circuit Clean the filter (after consulting the DH clogged. -
Page 17: Disposal
Installation Guide Termix VMTD-F-B Too high DH return temperature. Too small heating surface/too small Increase total heating surface. radiators compared to the total heating requirement of the building. Poor utilization of existing heating surface. Make sure the heat is distributed evenly Defective sensor on self-acting thermostat. - Page 18 Installation Guide Termix VMTD-F-B Danfoss District Energy DEN-GT VI.CW.C3.02 / LUK40110...
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Page 19: Declaration
8.1 Declaration of conformity 8.1.1 Category 0 with electrical equipment EC – Declaration of Conformity Gemina Termix A/S Member of the Danfoss Group Navervej 15-17 DK-7451 Sunds Declares on our sole responsibility that the below products: Substations – Category 0 with electrical equipment, covered by this declaration are in conformity with the following directives, standards and other normative documents, provided that they are used according to our instructions. - Page 20 Installation Guide Termix VMTD-F-B Produced by Danfoss A/S © 09/2014...