Viessmann SCU224 Manual de Serviço Página 1

SCU224Thanks for buying this product.Read this manual carefully to get the best perfomance from this unit.SCU224MountingConnectionHandlingFault indica

© 08284 SCU224.monus.indd| 10SCU224backwardforwardSET(selection / adjustment mode)The system monitoring display consists of 3 blocks: indica-tion of t

© 08284 SCU224.monus.indd11 |SCU224The system screen (active system scheme) shows the schemes selected on the controller. It consists of several syst

© 08284 SCU224.monus.indd| 12SCU2243. Primary commissioning For primary commissioning the system configuration has to be adjusted first1. AC power supp

© 08284 SCU224.monus.indd13 |SCU2244. Control parameter and indication channels4.1 Channel-overviewLegend:xCorresponding channel is available.x*Corr

© 08284 SCU224.monus.indd| 14SCU224ChannelArrSpecification Page1 2 3 4 5 6 7 8 9OCX x x x x x x x x option collector cooling collector 1 18OCX1 x optio

© 08284 SCU224.monus.indd15 |SCU2244.1.1 Indication of collector temperaturesShows the current collector temperature.• COL : collector temperature

© 08284 SCU224.monus.indd| 16SCU2244.1.7 Heat quantity balancing OHQM:Heat quantity measu-rement Adjustment range: OFF ... ON Factory setting: OFFA he

© 08284 SCU224.monus.indd17 |SCU2244.1.8∆T-regulationDT O: Switch-on temperature difference Adjustment range 2,0 ... 40,0 °Ra Factory setting 12.0

© 08284 SCU224.monus.indd| 18SCU224CMN / CMN1 / CMN2:col. minimum temperature Adjustment range 50 ... 195°F Factory setting 50°FCMX / CMX1 / CMX2: co

© 08284 SCU224.monus.indd19|SCU224The controller checks the tanks regarding loading facilities (switch-on difference). If the priority tank cannot be

© 08284 SCU224.monus.indd| 2SCU224ContentsImprint Safety regulations ...2Technical data a

© 08284 SCU224.monus.indd| 20SCU224For control- and service works the operating mode of the controller can be manually adjusted by selecting the adjus

© 08284 SCU224.monus.indd21 |SCU2245. Tips for fault indicationIf a malfunction occurs, it will be indicated on the display of the controller:Operatin

© 08284 SCU224.monus.indd| 22SCU2245.1Various:Pump starts for a short moment, switches-on/off repeatedlyIs the temperature diffe-rence at the co

© 08284 SCU224.monus.indd23 |SCU224a bTanks are cooled during the night.Does collector circuit pump run during the night?no yesCheck the controller fu

© 08284 SCU224.monus.indd| 24SCU2246. AccessorySmart Display SD3Serves as a visualization of collector and DHW tank tem-perature, as well as energy tr

© 08284 SCU224.monus.indd3 |SCU224!• System-monitoring-display• Upto4temperaturesensorsPt1000• 9basicsystemsselectable• Heatbalancing•

© 08284 SCU224.monus.indd| 4SCU224power connectionsRelay connectionsSensor connectionsground connectionsVBus®displaypushbuttoncan fuse 4Acable conduit

© 08284 SCU224.monus.indd5 |SCU224S1S2S4 / TRF1.2.2 Wiring connections for system 1Standard solar system with 1 tank, 1 pump and 3 sensors. Sensor S4

© 08284 SCU224.monus.indd| 6SCU224R2S1S2R1S3S4 / TRF1.2.4 Wiring connections for system 3 Solar system and after-heating with 1 tank, 3 sensors and a

© 08284 SCU224.monus.indd7 |SCU2241.2.5 Wiring connections for system 41.2.6 Wiring connections for system 5S2R1S3R2S1Solar system and tank charge i

© 08284 SCU224.monus.indd| 8SCU2241.2.7Wiring connections for system 7 Solar system with east-west collectors, 1 tank, 3 sensors and 2 solar pumps.R1

© 08284 SCU224.monus.indd9|SCU224S1S3S2S4R2R1S1S4S2S3R1R21.2.8 Wiring connections for system 81.2.9 Wiringconnectionsforsystem9Solar system wit