Würth IVT Latento System Controller Nstallation And Operating Instructions Download Page 12

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Installation

Hydraulic variants / Systems / Diagrams

Temperature sensors

w v

lta

e o

Relay outputs

0 V

variant

connection

System 12

Combi. s Hea-
ting circ.

System 13

Combi. Com-
Load. pump

System 14

Combi. Solar+
Burner

System 15

Combination store+ 2
Heating circ.

System 16

Heating circ.

System 17

Com
Load. pump

System 18

Sola

Storage Solar (bottom)

Storage Sola

Storage HC (middle)

Storage Hot water (top)

Storage Hot water (top) Storage Hot water (top)

Storage Hot water (top)

Storage Hot

Flow HC2

Flow HC1

Burner

Outdoor

Collector

VFS1
VFS2

V1
V2

R1
(ELR)

Solar pump

R2
(ELR)

Load. pump

Boiler pump

Load. pump

Boiler pump

Heating pump 2

Hot water-pump

Hot water pump

Hot water-pu

Mixer Open

Mixer Closed

Heating pump

Heating pump 1

Heating pump

Heating pum

R7
(pot.
free)

Compressor

Burner request

Compressor

Burner reque

V1
V2

Summary of Contents for IVT Latento System Controller

Page 1: ...Installationandoperatinginstructions Readcarefullybeforeinstallation commissioningandoperation System Controller...

Page 2: ...nsor 1 36 7 3 4 5 Thermostat sensor 2 36 7 3 4 6 T eco 36 7 3 4 7 Energy saving mode 36 7 3 4 8 Periods 36 7 3 5 Heating rod 37 7 3 5 1 Heating rod 37 7 3 5 2 Request DHW 37 7 3 5 3 Request HC 37 7 3...

Page 3: ...sure that the specialist gives you detailed information on the function and operation of the controller Always keep these instructions in the vicinity of the controller A 2 General instructions Danger...

Page 4: ...nto System Controller can be used as a system controller for the various system variants illustrated and explained under Hydraulic variants Systems Diagrams on page 12 Important characteristics of the...

Page 5: ...term 1 l min 12 l min VFS1 12 2 l min 40 l min VFS2 40 5 l min 100 l min VFS5 100 10 l min 200 l min VFS10 200 Network connections Ethernet optional CAN Bus Real Time Clock RTC with 24 hour power rese...

Page 6: ...Danger Before working on the unit switch off the power supply and secure it against being switched on again Check for the absence of power Electrical connections may only be made by a specialist and...

Page 7: ...7 Installation C 2 1 Socket 161 11 8 195 4 9 R4 5 4 4 33 33 139 3 n 3 5 169 3 Terminal connection cover Cover screw...

Page 8: ...o the degree thus ensuring optimal control of system functions Caution If desired the sensor cables can be extended to a maximum of 30m using a cable with a cross section of at least 0 75mm Make sure...

Page 9: ...or High efficiency pumps V2 optional speed controlled output for High efficiency pumps VFS1 Grundfos Direct Sensor VFS2 Grundfos Direct Sensor RC21 Room thermostat remote adjuster Mains voltage 230VAC...

Page 10: ...HC1 Flow S6 Burner sensor Burner sensor Burner sensor Burner sensor S7 Outdoor Outdoor Outdoor Outdoor Outdoor Outdoor Outdoor S8 Collector Collector Collector Collector Collector Collector Collector...

Page 11: ...ow HC2 Flow w HC1 Flow HC1 Flow HC1 Flow HC1 Flow Soild fuel sensor Burner sensor Burner sensor Outdoor Outdoor Outdoor Outdoor r Collector Collector Collector Signal Solar pump Signal Solar pump mp H...

Page 12: ...er top Storage Hot water top Storage Hot water top Storage Hot water top Storage Hot S4 Flow HC2 S5 Flow HC1 Flow HC1 Flow HC1 Flow HC1 Flow HC1 Flow HC1 Flow HC1 S6 Burner Burner S7 Outdoor Outdoor O...

Page 13: ...DHW top Storage DHW top HC2 Flow HC2 Flow HC2 Flow Flow HC1 HC1 Flow Flow HC1 HC1 Flow HC1 Flow HC1 Flow Burner Outdoor Outdoor Outdoor Outdoor Outdoor Outdoor Collector Collector Load pump Solar pump...

Page 14: ...he controller In Timer mode the temperature is controlled according to the set thermostat periods In Continous day mode the set periods are ignored and the temperature is controlled according to the d...

Page 15: ...tus LED 2 lights up when a relay is active the red LED blinks when an error occurs Inputs are made with 4 buttons 3 4 the functions of which change depending on context The esc key 3 is always used to...

Page 16: ...y appears as to whether you want to parametrise the controller using the commissioning help or not The commissioning help can also be termi nated or called up again at any time in the special function...

Page 17: ...s are available Current temperature values with explanations Function control of the system with operating hours etc Automatic mode manual mode or switch unit off Set parameters needed for normal oper...

Page 18: ...rect temperature sensor If the cables are too long or the sensors are not placed optimally the result may be small deviations in the measurement values In this case the display values can be compensat...

Page 19: ...nges the unit of time and the two buttons on the left scroll through the diagram 2 2 28 days Flow temperature during the last 28 days In the graphical overview the characteristics of e g the outdoor a...

Page 20: ...re settings Caution Times that are not specified are automatically considered to be nighttime mode The set times are only taken into account in the heating circuit operating mode Automatic 3 3 Heating...

Page 21: ...be active 3 periods can be set per day settings can also be copied to other days Outside the set times the circulation function is switched off Setting range from 00 00 to 23 59 default setting 06 00...

Page 22: ...rotection Settings range Auto Continuous day Continuous night Reference value 14 day reference Off Default Automatic 4 1 Heating circuit Operating Modes 4 2 Manual In Manual mode the individual relay...

Page 23: ...36 5 5 Cooling Settings for additional function see also 7 3 6 Cooling on page 38 5 6 Heating circuit This menu contains all settings concerning the first heating circuit 5 6 1 Summer Winter Day 5 6 2...

Page 24: ...characteristic slope in steps of 0 2 each time raising the day correc tion by 2 4 C This procedure can be repeated several times as needed Setting range from 10 C to 50 C default setting 5 C The diag...

Page 25: ...at the storage sensor Heating Circuit or flow sensor If the temperature exceeds the reference flow tem perature at the storage sensor HC or if that is not selected the flow temperature sensor by this...

Page 26: ...see 5 6 7 Minimum Flow on page 25 resulting in the mixer turning to closed position Settings range Yes No Default No Domestic hot water Caution The request only works when an additional heat source is...

Page 27: ...the minimum values that can be set in the frost protective function 6 2 Frost pro tection on page 28 menu will be used 5 25 1 Room controller This value is used to set the amount of influence in perc...

Page 28: ...after long periods of inactivity Settings range on off Default on 6 1 Anti seizing protection Caution Switching the frost protection function off or setting the minimum flow temperature too low can le...

Page 29: ...etting none 6 3 5 AL Sensor 2 Optional AL sensor When a second sensor is connected both sensors must reach and hold the setpoint temperature for the residence time for a successful heat up Settings ra...

Page 30: ...ng on system components 6 6 Collector protection Collector protection prevents overheating of the collector The pump is switched on to transfer heat from the collector to the storage tank If CP Ton is...

Page 31: ...ing 5 C 6 6 2 Frost protection If the seizing protection is activated the controller switches the relay in question and the connected consumer on every day at 12 00 setting daily or weekly on Sundays...

Page 32: ...mperature difference T between the reference sensors collector and storage tank is bigger than the set value then the speed is increased by one level after the control time elapses If the temperature...

Page 33: ...speed or min speed depending on the speed control variant 7 2 1 Variant on page 32 chosen Purging time can not be applied with PWM or 0 10V output Settings range 5 to 600 seconds Default setting 8 se...

Page 34: ...is reached the relay is switched on Settings range 5 20 K Default setting 8 K Switch off difference When this temperature difference is reached the relay is switched off Settings range 2 19 K Default...

Page 35: ...ngs range S1 S8 VFS1 2 Active storage Default setting none 7 3 2 3 HT Tmin Minimum temperature in source storage to enable the heat transfer Settings range S1 S8 VFS1 2 Active storage Default setting...

Page 36: ...eresis at thermostat sensor 2 is exceeded Settings range S1 S8 VFS1 2 active storage Default setting none 7 3 4 5 Thermostat sensor 2 Optional switch off sensor When T set hysteresis is exceeded at th...

Page 37: ...Settings range 0 60 min Default 1 min 7 3 5 6 Hysteresis Hysteresis of the setpoint temperature Settings range 20 20K Default 10K 7 3 5 7 Eco mode In Eco mode the electrical heating rod is switched on...

Page 38: ...f cooling and additional heating To prevent switching off additional heating or cooling when temperature fluctuations occur it is possible to de lay the switching of the corresponding relay for up to...

Page 39: ...or is below this temperature the relay is disabled Settings range 0 C to 85 C Default setting 60 C 7 3 7 4 T SF Switch on and Switch off condition for the temperature difference between boiler and sto...

Page 40: ...some solar systems especially with vacuum tube collectors it may occur that the measurement value acquisition at the collector sensor occurs too slowly or too inaccurately because the sensor is often...

Page 41: ...ve Default setting Valve Settings range On Off The flow sensor for the bypass function is selected in this menu Do not install in the return flow Settings range S1 S8 VFS1 VFS2 Default setting none 7...

Page 42: ...nerative energy source the time needed to heat up Settings range 0 60 minutes Default 1 minute 7 3 11 7 T eco DHW When the temperature drops below this temperature at the DHW sensor and the burner is...

Page 43: ...s active 7 3 12 1 Boiler pump Settings range On Off Special functions Relay functions Relay functions 7 3 12 2 BP Tmin Minimum temperature at the burner sensor to enable the boiler pump As soon as thi...

Page 44: ...riods Compressor activity times Set the desired periods of time when the compressor should be active 3 periods can be set per day settings can also be copied to other days Outside the set times the co...

Page 45: ...w rate period boost Conditions for the switch off of the heating circuit pump In mode flow FL the pump is switched off when the reference temperature is exceeded In mode Summer Winter S W the pump is...

Page 46: ...4 C This procedure can be repeated several times as needed Setting range from 10 C to 50 C default setting 5 C 7 3 16 7 Night correction Parallel translation of the characteristic curve The night corr...

Page 47: ...undershoot of the heating circuit temperature below the calculated refer ence flow temperature If the temperature at the storage sensor HC drops below the reference flow tempera ture by this value th...

Page 48: ...ge 0 85 C Default setting 85 C 7 3 17 4 T return flow Switch on temperature difference When this difference is exceeded between return flow sensor and storage sensor the relay is switched on Settings...

Page 49: ...e the circulation pump is switched off Settings range 1K to 20K Default 5K 7 3 20 3 Circulation sensor Determines the sensor that is used as reference sensor for the circulation Settings range S1 S8 V...

Page 50: ...g VFS1 is connected RPS1 option is not shown Settings range Off 0 0 6 bar 0 1 bar 0 1 6 bar 0 2 5 bar 0 4 bar 0 6 bar 0 10 bar Default setting Off 7 3 21 1 Pressure monitor This menu is used to config...

Page 51: ...Settings range Ethylen Propylen Default setting Ethylen 7 3 25 4 Glycole percentage The percentage of anti freeze agent in the system Settings range 0 100 Default setting 45 7 3 25 5 Flow rate X Flow...

Page 52: ...settings may lead to malfunctions Starting the commissioning help guides you in the correct order through the basic settings necessary for commission ing and provides brief descriptions of each parame...

Page 53: ...ettings are over written Caution Caution Caution 7 7 SD Card Settings for the data logging and firmware update function with SD card This is used to update the controllers firmware with a version save...

Page 54: ...es Menu 8 Menu lock can be used to secure the controller against unintentional changing of the set values The menu is closed by pressing esc or selecting Exit menu lock 8 Menu lock The menu 9 Service...

Page 55: ...Sensor x defective Means that either the sensor the sensor input at the controller or the connecting cable is was defective Resistance table see B 2 Temperature resistance table for Pt1000 sensors on...

Page 56: ...d fuse and check it Exchange the defec tive fuse for a new one locate the external source of the error e g pump and exchange it Then first recommission the con troller and check the function of the sw...

Page 57: ...mp that is used e g during purging or manual operation Settings range Solar 50 to 100 Default setting 100 Heating 0 to 50 Default setting 0 K 1 5 0 10V off This voltage is put out when the pump is tur...

Page 58: ...able break detection 25 Start 25 90 Area of control Min rpm PWM Signal 0 20 25 50 100 Stop Start 5 PWM off 5 20 PWM on 25 PWM max 90 90 PWM 20 to 100 1kHz Designed for a load of 10K Ohm Technical data...

Page 59: ...ce values at least once after com missioning has been successfully completed see 7 7 4 Save configuration on page 53 In the event of uncertainty as to the control response or malfunctions the service...

Page 60: ...OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF...

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