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Connection diagrams •

3110086 EHC20 UK 110515

N. Terminal plan and connections

N.1

Terminal box

The mains section on the right-hand side of the terminal box is protected by an additional plastic panel.

Before removing this, ensure that the controller has been disconnected from the power supply.

Bridge

N.2

Terminal plan for electrical connections

VFS2

VFS1

SD Card

Ethernet

GND

R5 R4 R3 R2 R1

Mains

Relays

PF relays

Extra low voltages

Max. 12 V

Extra low voltages

Max. 12 VAC/DC
Terminal: Connection for:

Sensor 1

Sensor 2

Sensor 3

Sensor 4

Sensor 5

Sensor 6

Sensor 7

Sensor 8

0-10 V / PWM

VFS1

Grundfos direct sensor

VFS2

Grundfos direct sensor

Room controller

SD card slot

for data storage and

updates

Ensure that the card is

the right way around!

The card should lock

with no resistance,

do not use excessive

force!

Ethernet

(optional)

For connecting to a

LAN

Potential-free

relay

Normally open

(closer)

Common

(voltage)

Normally closed

(opener)

Mains

230 VAC

Mains voltages

230 VAC 50-60 Hz

Terminal: Connection for:

Switch output 1 (rot. sp.)

Switch output 2 (rot. sp.)

Switch output 3

Switch output 4

Switch output 5

Switch output 6

Mains neutral wire N

Mains live wire L

The PE earth wire should be connected

to the PE metal terminal block!

Содержание EHC20

Страница 1: ...EHC20 Mounting installation and operating manual GB Read and save these instructions...

Страница 2: ...8 Program 6 1 8 Heat exchanger with bypass damper With two storage tanks and a mixer 40 O 9 Program 6 1 1 Heat exchanger with VFS sensor for power measurement 42 P Operation 44 P 1 Display and entry s...

Страница 3: ...e should only be used in the manner specified by the manufacturer If you have any questions please contact the manufacturer The address and telephone number of the manufacturer can be found in the lis...

Страница 4: ...About the automatic controller The EHC temperature difference controller enables you to efficiently use and check the function of your heat exchanger Above all the device gives you confidence through...

Страница 5: ...that the housing is not warped when attached 4 Drill three holes in the wall at the marked places using a drill and 6 bit and insert the rawl plugs 5 Set the automatic controller on the upper screw 6...

Страница 6: ...o the housing to exactly behind the strain relief The automatic controller and VFS sensor must have the same earthing potential The VFS sensor has a functional earthing PELV The peripheral unit termin...

Страница 7: ...rminal plan for electrical connection max 12 V Extra low voltages max 12 VAC DC Terminals Connection for S1 Sensor 1 S2 Sensor 2 S3 Sensor 3 S4 Sensor 4 S5 Sensor 5 S6 Sensor 6 S7 Sensor 7 S8 Sensor 8...

Страница 8: ...nd the circulating pump Mount the S1 temperature sensor in the lower part of the buffer memory VFS is the sensor for heat quantity measurement optionally available A1 is the STB safety temperature lim...

Страница 9: ...raturf hlereingang 7 Temperaturf hlereingang 6 Temperaturf hlereingang 5 Temperaturf hlereingang 4 Temperaturf hlereingang 3 Temperaturf hlereingang 2 Temperaturf hlereingang 1 Relaisausgang 5 Relaisa...

Страница 10: ...attention to the flow direction during installation E 1 SM230 with MV20 25 32 installation note Pay attention to the basic setting of the mixing valve and flow direction before installing the MV 20 2...

Страница 11: ...menu If necessary a security question will be displayed which asks if you wish to save the completed changes The function of the other 3 keys 4 is explained in the display that is directly above the...

Страница 12: ...nfirm Use arrow keys to change and confirm 90 C 6 2 1 Rotation speed R1 From Confirm 7 To move to the next point display CLOSE AND SAVE and confirm 8 Close and save Press YES to confirm Congratulation...

Страница 13: ...attention to the flow direction because otherwise correct functioning cannot be ensured Project Material Date Rev Title Rev No Ref Format A3 Weight Approved Draw No Sheet PR 0012 Installation 15 01 2...

Страница 14: ...urn flow sensor This will show which temperature sensor is activated for measurement of the return flow temperature Press INFO to open the menu and use the key to select VFS 1T and confirm 4 5 Glycol...

Страница 15: ...ays the available storage space on the SD card I 4 Load configuration This function allows you to load all the automatic controller settings on the SD card All previous settings in the automatic contr...

Страница 16: ...is in the event of 11 starts and stops No flow Displayed if the steam turbine is 50 C for more than 5 minutes while the pump is on Excessive Insufficient system pressure Displayed if Pmin and or Pmax...

Страница 17: ...ld also have the specialist check the functions of the automatic controller and if necessary optimise its settings Carrying out maintenance Checking the date and time Assessment Plausibility check of...

Страница 18: ...pressive range of functions and is virtually self explanatory in use The individual entry buttons have specific functions and are explained in the context of each step In the controller menu you will...

Страница 19: ...000 2 x Grundfos direct sensors 1 x RC21 Measuring range PT1000 40 C to 300 C Grundfos direct sensor 0 C 100 C 25 C 120 C briefly VFS 1 l min 12 l min VFS1 12 RPS 0 0 6 bar 2 l min 40 l min VFS2 40 0...

Страница 20: ...surface is as flat as possible to prevent the housing distorting when the screws are tightened 4 Using a drill and a size 6 mm bit drill three holes in the wall at the points marked and insert the pl...

Страница 21: ...should be kept away from the mains cables Temperature sensor leads should only be inserted into the left hand side and mains cables only into the right hand side of the device An omnipolar cut off de...

Страница 22: ...with Pt1000 temperature sensors These measure the temperature extremely accurately and thus ensure that the system functions optimally from a control point of view The temperature sensor leads should...

Страница 23: ...S3 Sensor 3 S4 Sensor 4 S5 Sensor 5 S6 Sensor 6 S7 Sensor 7 S8 Sensor 8 V1 0 10 V PWM V2 0 10 V PWM VFS1 Grundfos direct sensor VFS2 Grundfos direct sensor RC Room controller SD card slot for data st...

Страница 24: ...ture Flue temperature 0 10 V signal pump Circulator pump Three way valve High temperature mixer valve Low temperature mixer valve Bypass damper S1 S2 S3 S4 S5 S6 S7 S8 VFS1 VFS2 V1 V2 R1 ELR R2 ELR R3...

Страница 25: ...Forward flow temperature Flue temperature 0 10 V signal pump Circulator pump Three way valve High temperature mixer valve Low temperature mixer valve Bypass damper S1 S2 S3 S4 S5 S6 S7 S8 VFS1 VFS2 V1...

Страница 26: ...2 2 3 3 3 4 4 4 5 C GND GND GND GND GND GND GND GND GND GND L N N N N N N N NC NO PE PE PE PE PE PE PE PE R1 R2 R3 R4 R5 R6 S1 S2 S3 S4 S5 S6 S7 S8 V1 V2 1 1 1 1 1 2 2 2 2 2 3 3 3 4 4 4 5 C GND GND G...

Страница 27: ...86 EHC20 UK 110515 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved Draw Shee PR 0012 Installation 15 01 2014 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 00...

Страница 28: ...PF relay Relay output 6 Relay output 1 RC plugs CAN CAN Temperature sensor input 7 Temperature sensor input 6 Temperature sensor input 5 Temperature sensor input 4 Temperature sensor input 3 Temperat...

Страница 29: ...110515 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved Draw No Sheet PR 0012 Installation 14 01 2014 6 1 2 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 000...

Страница 30: ...lugs CAN CAN Temperature sensor input 7 Temperature sensor input 6 Temperature sensor input 5 Temperature sensor input 4 Temperature sensor input 3 Temperature sensor input 2 Temperature sensor input...

Страница 31: ...10086 EHC20 UK 110515 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved PR 0012 Installation 15 01 2014 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 000 kg CH...

Страница 32: ...t 7 Temperature sensor input 6 Temperature sensor input 5 Temperature sensor input 4 Temperature sensor input 3 Temperature sensor input 2 Temperature sensor input 1 Relay output 5 Relay output 4 Rela...

Страница 33: ...15 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved Draw No Sheet PR 0012 Installation Error No reference 6 1 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 00...

Страница 34: ...ntroller PF relay Relay output 6 Relay output 1 RC plugs CAN CAN Temperature sensor input 7 Temperature sensor input 6 Temperature sensor input 5 Temperature sensor input 4 Temperature sensor input 3...

Страница 35: ...10086 EHC20 UK 110515 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved PR 0012 Installation 15 01 2014 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 000 kg CH...

Страница 36: ...F relay Relay output 6 Relay output 1 RC plugs CAN CAN Temperature sensor input 7 Temperature sensor input 6 Temperature sensor input 5 Temperature sensor input 4 Temperature sensor input 3 Temperatur...

Страница 37: ...110515 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved Draw No Sheet PR 0012 Installation 14 01 2014 6 1 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 000 k...

Страница 38: ...CAN Temperature sensor input 7 Temperature sensor input 6 Temperature sensor input 5 Temperature sensor input 4 Temperature sensor input 3 Temperature sensor input 2 Temperature sensor input 1 Relay...

Страница 39: ...0086 EHC20 UK 110515 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved PR 0012 Installation 15 01 2014 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 000 kg CHR...

Страница 40: ...sensor input 5 Temperature sensor input 4 Temperature sensor input 3 Temperature sensor input 2 Temperature sensor input 1 Relay output 5 Relay output 4 Relay output 3 Relay output 2 Bypass 3 way val...

Страница 41: ...Project Material Date Rev Title Rev No Ref Format A3 Weight Approved Draw No Sheet PR 0012 Installation Error No reference 6 1 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 000...

Страница 42: ...2 2 2 3 3 3 4 4 4 5 C GND GND GND GND GND GND GND GND GND GND L N N N N N N N NC NO PE PE PE PE PE PE PE PE R1 R2 R3 R4 R5 R6 S1 S2 S3 S4 S5 S6 S7 S8 V1 V2 1 1 1 1 1 2 2 2 2 2 3 3 3 4 4 4 5 C GND GND...

Страница 43: ...86 EHC20 UK 110515 Project Material Date Rev Title Rev No Ref Format A3 Weight Approved PR 0012 Installation 15 01 2014 pmn DS EN 22768 m Unless otherwise specified tolerances are after 0 000 kg CHR P...

Страница 44: ...setup wizard You should now select Manual in the Operating mode menu page 48 in order to test the switch output with the load connected and check the sensor values for plausibility You can then switch...

Страница 45: ...he load connected and check the sensor values for plausibility You can then switch to automatic operation Observe the explanations of the individual parameters on the following pages and check whether...

Страница 46: ...1 Measurements 2 Statistics 3 Operating mode 4 Settings 5 Protections 6 Special functions 7 Menu lock 8 Service data 9 Language 1 Measurements The 1 Measurements menu is used to display the temperatur...

Страница 47: ...operation Various time ranges day years are available 2 2 Heat quantity Shows the system s heat yield 2 3 Graphic overview The data set out under 2 1 2 2 are presented clearly in the form of a bar cha...

Страница 48: ...omponents to overheat The temperatures measured continue to be displayed for overview purposes 4 Settings In the 4 Settings menu you can configure the basic settings for the control functions Under no...

Страница 49: ...the filling delay owing to temperature rise In order to set the exact filling priorities for systems with multiple storage tanks the minimum temperature rise at the collector measured over a minute w...

Страница 50: ...erved In case of doubt it is better to set the min rotational speed and pump level too high rather than too low 6 2 1 Rotational speed modes The following rotational speed modes are available Off Ther...

Страница 51: ...PWM pump If you select this menu you may be prompted to save the rotational speed settings 6 2 3 1 Pump In this menu you can select preset profiles for the pump or configure all settings yourself und...

Страница 52: ...for calculating the rotational speed shown If for example 30 is specified here 30 rotational speed will be shown when applying the frequency voltage under PWM On 0 10 V On If the frequency voltage for...

Страница 53: ...control in order to minimise temperature fluctuations The time span required for a complete control cycle from minimum to maximum speed is specified here Setting range 1 to 15 minutes default 4 minut...

Страница 54: ...as soon as you enable the function The numbering in this list does not correspond to the numbering in the controller menu 6 4 1 Thermostat Using the thermostat function you can provide the system wit...

Страница 55: ...e the heating will only switch on when the temperature drops below the T eco setting and will heat to T eco hysteresis if solar charging is enabled Setting range On Off default Off 6 4 1 8 Times Enabl...

Страница 56: ...hed off again Setting range 0 99 C default 70 C 6 4 4 2 T return flow Switch on temperature difference If the temperature difference between the storage tank sensor and the return flow sensor is excee...

Страница 57: ...l take place at these times Setting range 00 00 to 23 59 default 06 00 to 22 00 This anti Legionella function does not offer complete protection against Legionella because the controller relies on a s...

Страница 58: ...in the storage tank to which energy is transferred Setting range S1 S8 VFS1 2 Active storage tank default none 6 4 7 Difference The relay is activated as soon as the set temperature difference betwee...

Страница 59: ...ult 70 C 6 4 8 3 T SF The temperature difference between the boiler and storage tank as a switch on and switch off condition Switch on temperature difference T SF Setting range 5 to 20 K default 8 Swi...

Страница 60: ...e controller will issue an error message and the relay will switch hysteresis 0 5 bar Setting range Off 0 0 to 10 bar Default Off 6 4 10 4 Pmax Maximum pressure in the system If this pressure is excee...

Страница 61: ...ime operation If this temperature at the room sensor is exceeded within the set times the relay will switch off Setting range 10 to 30 C default 20 C 6 4 15 2 Room setpoint night Room setpoint tempera...

Страница 62: ...perature Setting range S1 S8 VFS1 2 Active collector Active storage tank default S8 6 5 2 Return flow sensor In this menu you can specify which sensor is used to measure the return flow temperature Se...

Страница 63: ...splayed and the LED will flash red Setting range On Off default Off 6 6 1 1 RPS1 RPS2 Pressure sensor model In this menu you can set the type of pressure sensor used Please note If for example VFS1 is...

Страница 64: ...10 SD card Settings for the logging function with data storage on the SD card 6 10 1 Logging In this menu you can enable the logging of sensor and relay data and adjust the settings Various file form...

Страница 65: ...tings for the controller s Ethernet module 6 14 1 Ethernet Enables or disables the Ethernet function Setting range On Off default Off 6 14 2 MAC address Displays the controller s individual MAC addres...

Страница 66: ...ck on To unlock the menus again select Menu lock off Setting range on off default off 8 Service Data The 8 Service Data menu can be used by a specialist or the manufacturer for remote diagnostics etc...

Страница 67: ...nutes i e if 11 switching operations are recorded No throughflow This message is shown if the solar pump is running and dT 50 C over a five minute period Excessive insufficient system pressure This me...

Страница 68: ...ve your settings optimised if necessary Maintenance procedures Checking the time and date see 6 11 Time and date page 65 Assessing the statistics and carrying out a plausibility check see 2 Statistics...

Страница 69: ...rvice data page 66 include not only current measurements and operating statuses but also all controller settings Following a successful setup save the service values on a one off basis 6 10 4 Save con...

Страница 70: ...Vorlaufstemperatur Pufferspeicher temperatur Drawing N 3110082 W rmetauchertemp Optional EHC20 System 6 1 3 TFI B 26 09 13 Temperaturf hlereingang 8 VFS2 Sensor VFS1 Sensor Netz Mains 0 10V Ausgang 0...

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Страница 72: ...aft se www exodraft se NO exodraft a s Storgaten 88 NO 3060 Svelvik Tel 47 3329 7062 Fax 47 3378 4110 info exodraft no www exodraft no UK exodraft Ltd Unit 4B Lancaster Ct Coronation Road Cressex Busi...

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