background image

50 DKDHR 

VI.GP.P1.02 

Danfoss District Energy

Instructions 

 

 

 

VX Solo II

13.0  Maintenance

Maintenance work

Is only to be carried out by qualified and authorised personnel.

Inspection

The operator or other authorised personnel is obliged to perform in-

spections at regular intervals and if necessary carry out maintenance 

work according to these and other instructions.  Within the scope of the 

above maintenance work all strainers should be cleaned, all connections 

should be tightened and the operation of the safety valves should be 

checked by turning the valve head in the indicated direction.

Rinsing/cleaning of plate heat exchanger

Brazed heat exchangers can be rinsed. For optimum cleaning the flow 

rate should be a min. of 1.5 times normal flow rate, preferably in back-

flush mode. This will remove any deposits formed on the inside of the 

plate heat exchanger. In case of more serious deposits, a cleaning  liquid, 

approved by Danfoss (f.ex. Kaloxi or Radiner FI) can be pumped through 

the heat exchanger. Both are environmentally friendly cleaning fluids 

and can be disposed of through the usual domestic sewerage system. 

Afterwards rinse thoroughly with large amounts of water.

Deacidification of plate heat exchanger

After long operation, because of the relatively high temperatures in 

the plates or tubes, the heat exchangers are expecially subject to 

calification. Any deacidification of the plate heat exchanger is done as 

shown on the drawing to the right. For brazed plate heat exchangers 

weak inhibited acid solutions (e.g. 5% formic, acetic or phosphoric acid) 

may be used.

Measures after maintenance work

After maintenance work and before switching the system on again:

–   Check that all screwed connections are tight.

–   Check that all safety features, covers, that were removed, have been 

replaced properly.

–   Clean the working area and remove any spilled materials.

–   Make sure that all tools, materials and other quipment that were 

used, have been removed from the working area.

–   Connect to energy supply and check for leaks.

–   Vent the system.

–   If necessary adjust the system again.

–   Make sure that all safety features on the device and the system work 

properly.

For the janitor or other supervisors

Meter reading

It is recommended to read the heat meter at regular intervals, and to 

write down the meter readings.

Cooling / Return temperature reading

The cooling, i.e. the temperature difference between district heating 

supply and district heating return is of great importance for the total 

heat economy. It is therefore very important to observe the supply 

and return temperatures. Normal temperature difference is 30-35 °C.

Please note, that the lowest district heating return temperature is di-

rectly dependent on  the return temperature from the heating circuit 

and the cylinder circuit. Therefore, please observe these return tem-

peratures.

Tightening of connections

When reading the heat meter, all fittings and connections should be 

checked for leaks. If leaks are detected, contact qualified and authori-

zed personnel immediately.

Please note that the connections may be supplied with EPDM rub-

ber gaskets - in general connection sizes from ¾” to and incl. 1½” 

for Kompakt H stations. Therefore take care not to overstrain the 

union nuts, as this may result in leaks. The manufacturer accepts 

no liability for leaks that result from overstrain of union nuts.

Summary of Contents for VX Solo II

Page 1: ...er 18 6 8 VX Solo II H2WS ECL 310 A367 1d 2 HE circuits sec connection for DHW cylinder 19 6 9 VX Solo OP ECL 210 A237 1a 1 HE circuit sec connection for DHW cylinder 20 7 0 Mounting 21 7 1 Variable c...

Page 2: ...ture The stations work at a maximum supply temperature from the district heating network of 110 C and the stations work with a op erating pressure of 16 bar which may put the user at risk of burns fro...

Page 3: ...HE with insulation 4 Differential pressure controller AVPL 5 Strainer 7 Ball valve 8 Circulation pump HE 11 Safety valve HE 2 5 bar 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansi...

Page 4: ...HE 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss E...

Page 5: ...14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 210 A260 1d 26 Outdoor sensor Danfo...

Page 6: ...VPB F 5 Strainer 7 Ball valve 8 Circulation pump HE 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for...

Page 7: ...Cylinder 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danf...

Page 8: ...ometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 210 A247 1c 26 Outdoor senso...

Page 9: ...ation pump FH 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller...

Page 10: ...13 Thermometer 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 310 A367 1d 26 Outdoor sensor Danfoss ESMT 27 Sen...

Page 11: ...1 Safety valve HE 13 Thermometer 15 Manometer 17 Air valve 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 210 A237 1a 26 Outdoor sensor Danfoss...

Page 12: ...station may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruction manual Instructions for...

Page 13: ...station Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruct...

Page 14: ...the substation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this...

Page 15: ...Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruction manual Instructi...

Page 16: ...on Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruction m...

Page 17: ...the bottom of the substation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as st...

Page 18: ...ation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instructio...

Page 19: ...e substation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this ins...

Page 20: ...ion manual Instructions for the fitted components will be supplied together with the substation 1 25 29 30 Measurements Dimensions without cover H640 x W440 x D250 mm Dimensions with cover H640 x W500...

Page 21: ...e dimensioning basis re tighten the connections and take the substation into continuous use Please note that the connections may be supplied with EPDM rub ber gaskets in general connection sizes from...

Page 22: ...Mounting height approx 2 5 m above ground Temperature range 50 to 50 C Electrical connections Two wire non polarized can be crossed Sensor cable 2 x 0 4 1 5 mm Connect the cable ends to ECL controlle...

Page 23: ...hut off valves are closed threaded and flanged connections are tightened Adding water to the system 1 Pump must be switched off when water is added to the system 2 Fill heat exchanger and system with...

Page 24: ...controller settings can be changed in accordance with the en closed producer instructions Differential pressure controller PN 16 AVPL Return mounting adjustable setting Alternative differential press...

Page 25: ...rature approx 65 C It is important to keep the supply temperature to the radiators as low as possible the temperature is indicated by thermometer mounted in HE return The room temperature is controlle...

Page 26: ...mmer period The controller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and...

Page 27: ...T www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorventil AVQM AVQMT www danfoss dk Side 9 DEUTsCh Volumenstrom und Temperatur Regler mit Motorstellventil AVQM AVQMT www da...

Page 28: ...ummer period The controller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide an...

Page 29: ...e controller with integrated control valve AVQM AVQMT www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorventil AVQM AVQMT www danfoss dk Side 9 DEUTsCh Volumenstrom und Temp...

Page 30: ...trict Energy Instructions VX Solo II H2 ECL 210 260 Safety temperature monitor The floor heating circuit can be supplied with a safety thermostat for protection against overheating Please see enclosed...

Page 31: ...the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for further information We also refer to Danfoss Insta...

Page 32: ...punkts styring AMV 150 www danfoss dk Side 3 DEUTsCh Stellantriebe f r 3 Pkt Eingangssignal AMV 150 www danfoss de Seite 3 sVENsKA Motor f r 3 punktsreglering AMV 150 varme danfoss se Sida 4 NEDERlAND...

Page 33: ...ump heating circuit See chapter 12 on page 48 for more information about circulation pump Domestic hot water TheVX Solo II HWP ECL 210 230 substations are supplied with con nection pipes for domestic...

Page 34: ...roller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for...

Page 35: ...VQM PN 25 AVQMT PN 25 AVQMT AVT PN 25 ENglIsh Flow and temperature controller with integrated control valve AVQM AVQMT www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorvent...

Page 36: ...st possible speed of rotation setting 1 in due consideration of the electricity consump tion and the heating comfort Factory setting of the selector switch is centre position default Select setting 2...

Page 37: ...settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for further...

Page 38: ...lventil AVQM AVQMT www danfoss de Seite 11 EsPA Ol Regulador de caudal y temperatura con v lvula de control integrada AVQM AVQMT www danfoss es P gina 13 slOVEN INA Regulator pretoka in temperature z...

Page 39: ...pump It is recommended to set the pump at highest speed of rotation set ting 3 before start up Then set the pump at lowest possible speed of rotation setting 1 in due consideration of the electricity...

Page 40: ...ler settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for fur...

Page 41: ...oss 01 2008 1 ENglIsh Actuators for three point control AMV 150 www danfoss com Page 2 DANsK Motorer til 3 punkts styring AMV 150 www danfoss dk Side 3 DEUTsCh Stellantriebe f r 3 Pkt Eingangssignal A...

Page 42: ...supplied with a safety thermostat for protection against overheating Please see enclosed operating instructions Jumo AT Domestic hot water The VX Solo II H2WS ECL 310 A367 substations are supplied wi...

Page 43: ...ller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for fu...

Page 44: ...emperature controller with integrated control valve AVQM AVQMT www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorventil AVQM AVQMT www danfoss dk Side 9 DEUTsCh Volumenstrom...

Page 45: ...erature in the cylinder is controlled by the Danfoss ECL controller Domestic hot water circulation pump It is recommended to set the pump at highest speed of rotation set ting 3 before start up Then s...

Page 46: ...er settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for furt...

Page 47: ...ant for hating only See photo to the right Manual override AVQM Press and hold the button on the bottom side of the actuator during manual override Instructions AVQM AVQMT PN 16 25 DN 15 50 73695050 D...

Page 48: ...ings which can be select ed with the push button Enclosed photo shows the recommended and alternative pump set tings for system types For further information about pump settings please refer to the en...

Page 49: ...according to the enclosed instructions ALPHA2 GRUNDFOS INSTRUCTIONS Summer operation SubstationwithT Cthermostat In periods without heating demand the pump can be switched of on the switch and the shu...

Page 50: ...easures after maintenance work After maintenance work and before switching the system on again Check that all screwed connections are tight Checkthatallsafetyfeatures covers thatwereremoved havebeen r...

Page 51: ...ce sensor Defektive actuator Check the functioning of the actuator Defective motor valve or possibly dirt in the valve housing Check the functions of the motor valve clean valve housing if required Au...

Page 52: ...ooling Strainer clogged Clean strainer Too small heating surface too small radiators compared to the total heating requirement of the building Increase total heating surface Poor utilization of existi...

Page 53: ...g of the cylinder You may check the specifications of the manufacturer conc cylinder capacity Not enough pressure on the hot water Strainer in cold water meter clogged Clean strainer possibly in consu...

Page 54: ...ntrols wrongly set Check that the controller has been cor rectly set see separate instructions Immersion sensor placed incorrectly Place immersion sensor correctly in ac cordance with the manufacturer...

Page 55: ...ric standard Immunity for residential commercial and light industry EN 61000 6 2 2007 Electromagnetic compatibility Generic standard Immunity industry EN 61000 6 3 2007 Electromagnetic compatibility G...

Page 56: ...Produced by Danfoss Redan A S 09 2011 Danfoss Redan A S Omega 7 S ften DK 8382 Hinnerup Phone 45 87 43 89 43 Fax 45 87 43 89 44 redan danfoss com www redan danfoss dk...

Reviews: