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Installation Guide

Termix VMTD Compact 20

3.0 Safety notes

The following instructions refer to the standard design of
substation. Special versions of substations are available on
request.

This operating manual should be read carefully before installation
and start-up of the substation. The manufacturer accepts no
liability for damage or faults that result from non-compliance with
the operating manual. Please read and follow all the instructions
carefully to prevent accidents, injury and damage to property.
Assembly, start-up and maintenance work must be performed by
qualified and authorized personnel only.
Please comply with the instructions issued by the system
manufacturer or system operator.

Corrosion protection

All pipes and components are made of stainless steel and brass.
The maximum chloride compounds of the flow medium should not
be higher than 150 mg/l.
The risk of equipment corrosion increases considerably if the
recommended level of permissible chloride compounds is
exceeded.

Energy source

The substation is designed for district heating as the primary
source of energy. However, also other energy sources can be used
where the operating conditions allow it and always are comparable
to district heating.

Application

The substation is designed to be connected to the house
installation in a frost-free room, where the temperature does not
exceed 50 °C and the humidity does not exceed 60%. Do not cover
or wall up the substation or in any other way block the entrance
to the station.

Choice of material

Choice of materials always in compliance with local legislation.

Safety valve(s)

We recommend mounting of safety valve(s), however, always in
compliance with local regulations.

Connection

The substation must be equipped with features that ensure that
the substation can be separated from all energy sources (also
power supply).

Emergency

In case of danger or accidents - fire, leaks or other dangerous
circumstances - interrupt all energy sources to the station if
possible, and seek expert help.
In case of discoloured or bad-smelling domestic hot water, close all
shut-off valves on the substation, inform the operating personnel
and call for expert help immediately.

Storage

Any storage of the substation which may be necessary prior to
installation should be in conditions which are dry and heated.

Authorized personnel only

Assembly, start-up and maintenance work must be performed by

qualified and authorized personnel only.

Please observe instructions carefully

To avoid injury to persons and damage to the device, it is absolutely
necessary to read and observe these instructions carefully.

Warning of high pressure and temperature

Be aware of the installation’s permissible system pressure and
temperature.

The maximum temperature of the flow medium in the substation is
120 °C.

The maximum operating pressure of the substation is 10 bar. PN 16
versions are available on enquiry.

The risk of persons being injured and equipment damaged increases
considerably if the recommended permissible operating parameters

are exceeded.
The substation installation must be equipped with safety valves,
however, always in accordance with local regulations.

Warning of hot surface

The substation has got hot surfaces, which can cause skin burns.

Please be extremely cautious in close proximity to the substation.
Power failure can result in the motor valves being stuck in open

position. The surfaces of the substation can get hot, which can cause
skin burns. The ball valves on district heating supply and return should

be closed.

Warning of transport damage

Before substation installation, please make sure that the substation
has not been damaged during transport.

IMPORTANT - Tightening of connections

Due to vibrations during transport all flange connections, screw joints
and electrical clamp and screw connections must be checked and
tightened before water is added to the system. After water has been
added to the system and the system has been put into operation,
re-tighten

ALL

connections.

4

DEN-GT

VI.CW.W2.02 / LUK41200

Danfoss Heating

Содержание Termix VMTD Compact 20

Страница 1: ...up 7 4 3 Electrical connections 8 5 0 Design 9 5 1 Design 9 5 2 Schematic diagram 10 6 0 Controls 12 6 1 Heating circuit 12 6 2 DHW temperature control 14 6 3 Other 15 6 4 Maintenance 17 7 0 Troublesh...

Страница 2: ...Installation Guide Termix VMTD Compact 20 2 DEN GT VI CW W2 02 LUK41200 Danfoss Heating...

Страница 3: ...troller sets the optimum operation conditions for radiator thermostats in order to enable individual temperature control in each room The mixing loop creates a suitable temperature level for the heati...

Страница 4: ...rcumstances interrupt all energy sources to the station if possible and seek expert help In case of discoloured or bad smelling domestic hot water close all shut off valves on the substation inform th...

Страница 5: ...nnections 1 District heating DH supply 2 District heating DH return 3 Heating HE supply 4 Heating HE return 5 Domestic hot water DHW 6 Domestic cold water DCW 7 Hot water circulation HWC Connection si...

Страница 6: ...and rinse Prior to installation all substation pipes and connections should be cleaned and rinsed Thightening Due to vibration during transport all substation connections must be checked and tightene...

Страница 7: ...f the heating requirement increases Re thighten connections After water has been added to the system and the system has been put into operation re tighten ALL connections Pump The pump must be switche...

Страница 8: ...ted for repairs Outdoor temperature sensor Outdoor sensors should be mounted so as to avoid exposure to direct sunlight They should not be placed close to doors windows or ventilation outlets The outd...

Страница 9: ...t look different than the substation shown Design description B Heat exchanger DHW 11 Domestic hot water pump F Electronic controller 27 Actuator HE 7 Thermostatic controller DHW 31 Differential press...

Страница 10: ...fferent than the schematic diagram shown Schematic description B Heat exchanger DHW 11 Domestic hot water pump 24 Delivered loose with unit F Electronic controller heating 16 Outdoor sensor 27 Actuato...

Страница 11: ...sor 27 Actuator 2 Single check valve 18 Thermometer 29 2 way motorized valve 7 Thermostatic valve 19 Surface sensor 31 Differential pressure controller DHW Domestic Hot Water DCW Domestic Cold Water H...

Страница 12: ...e HE flow temperature in the heating circuit is controlled by the HE temperature controller Thermostatic control The temperature of the HE flow line is adjusted as follows To increase temperature turn...

Страница 13: ...n be used as safety function by power failure 6 1 4 Electronic control Substations with electronic control must be set in accordance with manufacturer s instructions Where the room temperature is cont...

Страница 14: ...ed operation 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 Energy labelling c...

Страница 15: ...2 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 fail...

Страница 16: ...ating conditions and the manufacturer s instructions 6 3 3 Domestic hot water pump Important It is necessary to mount a domestic hot water circulation pump on the water heater to avoid regulation prob...

Страница 17: ...Checking of all temperatures such as DH supply temperature and DHW temperature Connections Checking all connections for leakages Safety valves The operation of the safety valves should be checked by...

Страница 18: ...ump Defective or clogged non return valve Replace clean No electricity Check Wrong setting of automatic controls if any To adjust an electronic controller for DHW pls note enclosed instructions for el...

Страница 19: ...required Air pockets in the system Vent the installation thoroughly Limiting of the return temperature adjusted too low Adjust according to instructions Defective radiator valves Check replace Uneven...

Страница 20: ...ols as well as return sensors Pump pressure too high Adjust pump to a lower level Air in system Vent the system Defective or incorrectly set radiator valve s Single pipe loop systems require special o...

Страница 21: ...Installation Guide Termix VMTD Compact 20 Danfoss Heating VI CW W2 02 LUK41200 DEN GT 21...

Страница 22: ...Installation Guide Termix VMTD Compact 20 22 DEN GT VI CW W2 02 LUK41200 Danfoss Heating...

Страница 23: ...ent of machines EMC Direct ive 2004 108 EEC EN 61000 6 2 2007 Electromagnetic compatibility Generic standard Immunity industry EN 61000 6 3 2007 Electromagnetic compatibility Generic standard Emission...

Страница 24: ...Installation Guide Termix VMTD Compact 20 Produced by Danfoss A S 01 2012...

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