Table of Contents
Advertisement
Quick Links
Operating Guide
Termix VMTD MIX Compact 28
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............................................................. 8
5.1
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.0 Controls .......................................................... 10
6.1
Heating circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2
DHW temperature control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3
Other. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.4
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.0 Troubleshooting .............................................. 17
7.1
Troubleshooting in general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.2
Troubleshooting DHW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.3
Troubleshooting HE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.4
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
© Danfoss | 2019.01
8.0 Declaration...................................................... 23
8.1
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
VI.CW.Y5.02 / LUK42260 | 1
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Danfoss Termix VMTD MIX Compact 28
Summary of Contents for Danfoss Termix VMTD MIX Compact 28
-
Page 1: Table Of Contents
Operating Guide Termix VMTD MIX Compact 28 1.0 Table of Contents 1.0 Table of Contents ..........1 8.0 Declaration............23 Declaration of conformity ........23 2.0 Functional description........ -
Page 2: Functional Description
Operating Guide Termix VMTD MIX Compact 28 2.0 Functional description District heating substation for direct heating and instantaneous domestic hot water with thermostatic or electronic controls. Designed for wall-mounting. Application The Termix VMTD Compact 28 is a complete solution with a built-in water heater and a heating circuit with mixing loop. -
Page 3: Safety Notes
REACH All Danfoss A/S products fulfill the requirements in REACH. One of the obligations in REACH is to inform customers about presence of Candidate list substances if any, we hereby inform... -
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 VMTD MIX Compact 28 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 6: Start-Up
Operating Guide Termix VMTD MIX Compact 28 4.2 Start-up Start-up, Heating with mixing loop Start-up: Re-thighten connections 1: Pump speed After water has been added to the system and the system has been Set the pump to highest speed before start-up. -
Page 7: Electrical Connections
Operating Guide Termix VMTD MIX Compact 28 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. -
Page 8: Design
Operating Guide Termix VMTD MIX Compact 28 5.0 Design 5.1 Design Your substation might look different than the substation shown. Design description Heat exchanger, DHW Domestic hot water pump 30 Flow controller with integrated control valve 48 Air vent, manual... -
Page 9: Schematic Diagram
Operating Guide Termix VMTD MIX Compact 28 5.2 Schematic diagram Supply Supply Return Return Your substation might look different than the schematic diagram shown. Schematic description 11 Domestic hot water pump Heat exchanger, DHW 25 Pressure gauge with ball valve... -
Page 10: Controls
Operating Guide Termix VMTD MIX Compact 28 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. - Page 11 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 12 Operating Guide Termix VMTD MIX Compact 28 6.1.7 Circulator pump The UPML, UPMXL circulator pumps are designed for circulating liquids in heating systems with variable flows, internally controlled with three proportional pressure curves and three constant pressure/power curves to be selected via user interface.
-
Page 13: 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 14 Operating Guide Termix VMTD MIX Compact 28 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. 6.2.4 Domestic hot water pump...
-
Page 15: Other
Operating Guide Termix VMTD MIX Compact 28 6.3 Other 6.3.1 Strainer Strainers should be cleaned regularly by authorized personnel. The frequency of cleaning would depend on operating conditions and the manufacturer’s instructions. VI.CW.Y5.02 / LUK42260 © Danfoss | 2019.01 | 15... -
Page 16: 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. VI.CW.Y5.02 / LUK42260 16 | © Danfoss | 2019.01... -
Page 17: Troubleshooting
Operating Guide Termix VMTD MIX Compact 28 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 18: Troubleshooting Dhw
Operating Guide Termix VMTD MIX Compact 28 7.2 Troubleshooting DHW Problem Possible cause Solution Too little or no DHW. Strainer in supply or return line clogged. Clean strainer(s). DHW circulation pump out of order or with Check circulation pump. too low setting. -
Page 19: Troubleshooting He
Operating Guide Termix VMTD MIX Compact 28 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 20 Operating Guide Termix VMTD MIX Compact 28 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 21: Disposal
Operating Guide Termix VMTD MIX Compact 28 7.4 Disposal Disposal This product should be dismantled and its components sorted, if possible, in various groups before recycling or disposal. Always follow the local disposal regulations. VI.CW.Y5.02 / LUK42260 © Danfoss | 2019.01 | 21... - Page 22 Operating Guide Termix VMTD MIX Compact 28 VI.CW.Y5.02 / LUK42260 22 | © Danfoss | 2019.01...
-
Page 23: Declaration
Operating Guide Termix VMTD MIX Compact 28 8.0 Declaration 8.1 Declaration of conformity Category 0 with electrical equipment VI.CW.Y5.02 / LUK42260 © Danfoss | 2019.01 | 23... - Page 24 Operating Guide Termix VMTD MIX Compact 28 VI.CW.Y5.02 / LUK42260 24| © Danfoss | 2019.01...
Need help?
Do you have a question about the Termix VMTD MIX Compact 28 and is the answer not in the manual?
Questions and answers