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16/07/2015 - 300028005-001-04

TRIO DT 250 - TRIO DT 350

6 Checking and maintenance

6.1 Solar installation

We recommend that you take out a preventive maintenance contract
to check the fluid level, antifreeze protection, pressure in the system,
leak test and general operation every year or every two years.

6.2 Tank

6.2.1

Magnesium anodes

The magnesium anode must be checked by a qualified professional
at least every 2 years.

6.2.2

Safety valve or safety unit

Have the condition of the anode checked after the first year. The
magnesium anode must be checked by a qualified professional at
least every 2 years.

6.2.3

Descaling

In hard water regions, it is advisable to ask the fitter to descale the
DHW tank exchanger once a year in order to maintain its level of
performance.

6.2.4

Casing

The casing of the DHW tank can be cleaned with soapy water.

6.2.5

Vent device

If the vent device is not used, the installer must check the seal on the
top vent connection.

6.3 Solar circuit

To check operation of the solar system, consult the display on the
control system.
The pressure in the solar circuit can be checked on the solar station's
pressure gauge. If the pressure shown is lower than 0.5 bar, call the
installer.

Never carry out work on the solar circuit yourself. Never
work on the safety valve yourself.

Summary of Contents for DIETRISOL TRIO DT 250

Page 1: ...TRIO DT 250 TRIO DT 350 Solar domestic hot water tanks DIETRISOL User Guide 300028005 001 04 EN ...

Page 2: ...W calorifier outlet temperature 9 4 1 Programming and setting the electrical back up 9 4 2 Setting the thermostatic mixing valve 9 5 solar regulator 10 5 1 General description of how the unit operates 10 5 2 Start up 10 5 3 Adjustment keys 11 5 4 Measured values and adjustment parameters 12 5 4 Measured values and adjustment parameters 12 6 Checking and maintenance 17 6 1 Solar installation 17 6 2...

Page 3: ...ter inlet Open a hot water tap on the installation Open a safety unit valve When the water stops flowing the appliance has been drained Respect the maximum water inlet pressure to ensure correct operation of the appliance referring to the chapter Technical Specifications Any operation on the installation must be performed by a qualified technician respecting professional regulations and in accorda...

Page 4: ...rating plates affixed to the appliance Labels and rating plates must be legible throughout the entire lifetime of the appliance Immediately replace damaged or illegible instruction or safety labels 1 3 Liabilities 1 3 1 Manufacturer s liability Our products are manufactured in compliance with the requirements of the various applicable European Directives They are therefore delivered with 1 marking...

Page 5: ...n In so doing De Dietrich Thermique S A S wishes to safeguard the user s safety obviate hazards and guarantee correct operation of the appliance Danger Risk of a dangerous situation causing serious physical injury Warning Risk of a dangerous situation causing slight physical injury Caution Risk of material damage Specific information ZReference Refer to another manual or other pages in this instru...

Page 6: ...he requirements of european directive 97 23 EC article 3 paragraph 3 on pressure equipment Electrical compliance Marking 1 This product complies to the requirements to the european directives and following standards 2006 95 EC Low Voltage Directive Reference Standard EN 60 335 1 Reference Standard EN 60 335 2 21 2004 108 EC Electromagnetic Compatibility Directive Reference Standards EN 50 081 1 EN...

Page 7: ...anged 2 3 kW 21 23 Operation with electrical back up Top up volume litres 130 160 Solar volume litres 120 190 Output of the electrical back up kW 2 4 3 Back up volume heating time from 15 to 60 C h 2h50 2h50 Vecs 40 5 6 Domestic hot water storage temperature 55 C litres 355 420 Vecs40 5 6 Domestic hot water storage temperature 60 C litres 385 450 Continuous output T 35 K 2 3 l h 515 565 Flow rate ...

Page 8: ... is made of painted steel sheeting The top and side covers are made of ABS Solar station The solar heating pump unit comprises the solar circuit safety unit a pressure and temperature gauge and a flowmeter to visualise circulation of the solar fluid between the collectors and the DHW tank An expansion vessel is connected to the solar unit it is used to compensate for the expansion of the solar flu...

Page 9: ... heating by the resistor off peak hours contact for significant unforeseen needs By programming the heating time outside off peak periods 2 hours maximum according to the DHW volume at 40 C required to compensate for the lack of sunshine in winter for example The programmed period outside off peak hours must preferably be between 12 h and 18 h 4 2 Setting the thermostatic mixing valve 28 Domestic ...

Page 10: ...orage temperature is reached adjustment parameter SX factory setting 60 C When the temperature in the collectors reaches the maximum value adjustment parameter CX factory setting 100 C the solar pump is triggered to cool the collectors The pump continues to operate until the temperature in the collectors is lower than 5 K at parameter CX and or the maximum storage temperature 85 C is reached in th...

Page 11: ...eys The regulator is controlled by the 3 keys only located below the display The down key is used to go to the next menu or to increase the settings values The up key has the opposite effect The adjustment parameters are displayed after the measured values To access these parameters hold down the down key for 2 sec in the TC parameter When the display shows an adjustment parameter the word SET app...

Page 12: ...tion 1 Temperature difference enabling the passage of the heating return via the solar tank DO 0 5 19 5 K 0 1 6 Temperature difference enabling heating return directly to the boiler DF 0 4 19 5 K 0 1 4 Reference temperature difference DT 10 20 K 0 1 20 Zone changeover temperature tank SZ 20 80 C 0 1 55 Set temperature of the solar calorifier SX 20 80 C 0 1 60 Maximum collector temperature CX 100 1...

Page 13: ... 2 Installation 2 Solar installation for the preparation of domestic hot water with a DC mixed calorifier and for heating back up with temperature control on the heating return circuit The temperature control on the heating return circuit prevents the boiler having to maintain the temperature of the back up volume in the calorifier in the event of prolonged absence of sunshine Adjustment parameter...

Page 14: ...re in the collectors is higher than value SZ the arrow flashes We advise you to set the domestic hot water booster temperature to 50 C If the customer wants a higher temperature parameter SZ will have to be changed SZ is set to 55 C in the factory and must always be 5K higher than the DHW booster circuit temperature setting s If the domestic hot water boiler circuit is set at more than 50 C SZ mus...

Page 15: ...complete solar station by the high circulation speed in the pipes and eliminated by the Airstop system manual bleed degasser After this phase the regulator changes to matched flow mode The remaining self calibration time is displayed with parameter tc Adjustment parameter PN Pump minimum speed Adjustment range 20 100 Factory setting 30 Adjustment parameter PN sets a minimum value for the solar pum...

Page 16: ...s Tubular solar collectors Adjustment parameter MM Operating mode Adjustment range 0 4 Factory setting 4 For inspection and maintenance work it is possible to operate the regulator in manual mode To operate the regulator in manual mode it is necessary to input parameter MM from the following table Solar panel installation Area m2 Number of panels Flow rate l h Flow rate l min 3 5 1 or 2 400 6 7 6 ...

Page 17: ... checked by a qualified professional at least every 2 years 6 2 3 Descaling In hard water regions it is advisable to ask the fitter to descale the DHW tank exchanger once a year in order to maintain its level of performance 6 2 4 Casing The casing of the DHW tank can be cleaned with soapy water 6 2 5 Vent device If the vent device is not used the installer must check the seal on the top vent conne...

Page 18: ...ositions are not exclusive of benefits for the purchaser of the legal guarantee as stated in Civil Code articles 1641 to 1648 Poland Warranty conditions are included in the warranty card Switzerland The application of the warranty is subject to the terms and conditions of sale delivery and warranty of the company marketing our products Belgium The preceding dispositions about the contractual guara...

Page 19: ...5 300028005 001 04 TRIO DT 250 TRIO DT 350 Warranty certificate Date of purchase Name and address of the purchaser Tel Information on the appliance to be found on the nameplate Model Serial number Retailer s stamp ...

Page 20: ...en Appendix Information on the ecodesign and energy labelling directives ...

Page 21: ...ormation 3 1 1 Recommendations 3 1 2 Ecodesign Directive 3 1 3 Technical data Hot water storage tank 3 1 4 Circulation pump 3 1 5 Disposal and Recycling 3 1 6 Product fiche Solar devices 3 Contents 2 300028005 ErP01 24072015 ...

Page 22: ...r ried out by a qualified installer in accordance with local and nation al regulations 1 Cut the electricity to the domestic hot water tank 2 Disconnect the cables on the electrical components 3 Close the domestic water inlet valve 4 Drain the installation 5 Dismantle all water connections fitted to the domestic hot water tank outlet 6 Scrap and recycle the domestic hot water tank in accordance wi...

Page 23: ...Brand name Product name DIETRISOL TRIO DT 250 DIETRISOL TRIO DT 350 Annual auxiliary energy consumption Qaux kWh 51 51 1 Specific information 4 300028005 ErP01 24072015 ...

Page 24: ...stributore Ufficiale Esclusivo De Dietrich Thermique Italia www dedietrich heiztechnik com Freecall 0800 201608 Jeseniova 2770 56 130 00 Praha 3 49 0 25 72 9161 0 49 0 25 72 9161 102 info remeha de Via Passatore 12 12010 San Defendente di Cervasca CUNEO 39 0171 857170 39 0171 687875 info duediclima it 420 271 001 627 info dedietrich cz IT DE DIETRICH THERMIQUE Iberia S L U www dedietrich calefacci...

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