Danfoss Termix VX Operating Manual Download Page 3

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.

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.

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
you about one substance on the candidate list: The product
contains brass parts which contains lead (CAS no: 7439-92-1) in a
concentration above 0.1% w/w.

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

ALL

ALL

connections.

AQ221686472754en–010401 / LUK4030601

© Danfoss | 2022.11 | 3

Operating Guide Termix VX with complete insulation

Summary of Contents for Termix VX

Page 1: ...4 1 Mounting 4 4 2 Start up 7 4 3 Electrical connections 9 5 0 Design 10 5 1 Design 10 5 2 Schematic diagram 11 6 0 Controls 12 6 1 Heating circuit 12 6 2 Other 16 6 3 Maintenance 18 7 0 Troubleshooti...

Page 2: ...heat meter as well as strainers and ball valves Heating HE The heating side consists of a stainless steel plate heat exchanger safety valve manometer thermometers ball valves drain valve air valve exp...

Page 3: ...g personnel and call for expert help immediately 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 lis...

Page 4: ...ating DH supply 2 District heating DH return 3 Heating HE supply 4 Heating HE return 5 Tank flow line TFL 6 Tank return line TRL Connection sizes DH HE G int thread TFL TRL G int thread Dimensions mm...

Page 5: ...n during transport all substation connections must be checked and tightened before installation Unused connections Unused connections and shut off valves must be sealed with a plug Should the plugs re...

Page 6: ...ints of the bracket for the energy display and screw the two plugs supplied into the insulation front Mount the bracket for the display of the energy meter Mount the display calculator of the energy m...

Page 7: ...in Start up 1 Pump speed Set the pump to highest speed before start up 2 Start pump Start the pump and heat through the system 3 Open shut off valves The shut off valves should then be opened and the...

Page 8: ...e at risk of seizure and any remaining warranty will be withdrawn Summer operation Switch off pump In summer the circulation pump must be switched off and the shut off valve to HE supply closed Runnin...

Page 9: ...rically connected so that it can be disconnected 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...

Page 10: ...ansion tank 1 Summer valve 14 Sensor pocket energy meter 41 Fitting piece energy meter 4 Safety valve HE 20 Filling drain valve 48 Air vent manual 7 Thermostatic controller HE 26 Pressure gauge HE 9 S...

Page 11: ...n valve 41 Fitting piece energy meter 9 Strainer 24 Delivered loose with unit 48 Air vent manual DH Supply District Heating Supply DH Return District Heating Return HE Supply Heating Supply HE Return...

Page 12: ...temperature controller 6 1 3 RAVK controller RAVK controller 25 65 C The temperature setting is as follows 1 25 C 2 35 C 3 45 C 4 55 C 5 65 C The values are intended as a guide Thermostatic control Th...

Page 13: ...direct sunlight They should not be placed close to doors windows or ventilation outlets 6 1 6 Circulator pump UPM3 UPM3 Pumps can be controlled in constant pressure proportional pressure or constant...

Page 14: ...Constant pressure Auto adapt Proportional pressure 1 Proportional pressure 2 2 pipe systems Proportional pressure 3 MAX Constant pressure 1 1 pipe systems Constant pressure 2 Under floor heating Cons...

Page 15: ...6 1 8 HE pressure gauge The HE pressure gauge indicates the pressure of the HE system AQ221686472754en 010401 LUK4030601 Danfoss 2022 11 15 Operating Guide Termix VX with complete insulation...

Page 16: ...bserve any dripping from the safety valve It is recommended to check the operation of safety valves at intervals of 6 months This is done by turning the valve head in direction indicated 6 2 2 Straine...

Page 17: ...on the fitting piece 3 Remove fitting piece Remove the fitting piece and replace it with the energy meter Do not forget the gaskets 4 Tighten connections After mounting of the energy meter remember t...

Page 18: ...mperature and DHW temperature Connections Checking all connections for leakages Safety valves The operation of the safety valves should be checked by turning the valve head in the indicated direction...

Page 19: ...H is at the normal level summer at least 60 C winter at least 70 C the differential pressure is equal to or higher than the normal local differential pressure in the DH network if in doubt ask the DH...

Page 20: ...lation thoroughly Limiting of the return temperature adjusted too low Adjust according to instructions Defective radiator valves Check replace Uneven heat distribution in building because of incorrect...

Page 21: ...The system should feature electronic controls 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...

Page 22: ...er to the applicable take back scheme for the recycling of electrical and electronic equipment Dispose of the product through channels provided for this purpose Comply with all local and currently app...

Page 23: ...8 0 Declaration 8 1 Declaration of conformity AQ221686472754en 010401 LUK4030601 Danfoss 2022 11 23 Operating Guide Termix VX with complete insulation...

Page 24: ...24 Danfoss 2022 11 AQ221686472754en 010401 LUK4030601 Operating Guide Termix VX with complete insulation...

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