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IVAR SFWC, Инструкция по установке и эксплуатации

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21

4.4. -  Circulation

Settings

4.4.1. -  Circulation

Mode of circulation

When the mode 

“Request”

 is active, the circulation pump is switched on after a corresponding 

tapping of water has occured and stays on until the circulation target temperature (Circ Tmin + 

hysteresis) is reached at the circulation sensor.

In mode “

Periods

” the circulation pump is enabled in the set periods and the set circulation 

minimum temperature is undershot and stays on until the circulation target temperature (Circ 

Tmin + hysteresis) is reached at the circulation sensor.

Time

: The circulation pump is switched on in the enabled periods and the set circula-

tion minimum temperature is undershot, or when water is tapped. Circulation stays on till the 

circulation target temperature (Circ Tmin + hysteresis) is reached at the circulatiopn sensor.

Always on

: Circulation pump is switched on in set periods.

4.4.2. - Circ. Tmin.

Minimum temperature at sensor S2 

If the temperature drops below Circ.Tmin and the circulation is enabled (see „4.4.5. - 

Circulation period“), the circulation pump is started.

4.4.3. - Circ. hysteresis

4.4.4. -  Circ. maximum Flow rate

Switch-off hysteresis of the circulation pump 

If the temperature exceeds TminS2 by this value, the circulation pump is switched off.

Maximum fl ow rate of the circulation pump 

If the fl ow rate measured at sensor 6 exceeds this value (because water is being drai-

ned from the system) the circulation pump is switched off. 

Circulation settings are only availabe when the circulation function was 

selected for relay 1 in special functions.

Caution

This Value is set during the calibration process.

Caution

Содержание SFWC

Страница 1: ...Fresh Water Controller SFWC Installation and operating instructions Read carefully before installation commissioning and operation ...

Страница 2: ...1 Tset 20 4 2 Tmax 20 4 3 VFS Type 20 4 4 Circulation 21 4 4 1 Circulation 21 4 4 2 Circ Tmin 21 4 4 3 Circ hysteresis 21 4 4 4 Circ maximum Flow rate 21 4 4 5 Circulation period 22 4 4 6 Tap support 22 4 4 7 Min storage temp 22 4 4 8 Tap support calibration 22 4 10 Comfort 22 5 Protections Protective functions 23 5 1 Antilegionella 23 5 2 Limescale Protection 24 5 3 Discharge Protection 24 5 4 Se...

Страница 3: ...e regulations of the local power utility the applicable DIN EN standards and the installation and operating instruction of the additional system components must also be observed The controller does not under any circumstances replace any safety devices to be provided by the customer Installation electrical connection commissioning and maintenance of the unit may only be carried out by specialists ...

Страница 4: ... accessories Use of the device for other than its intended purpose Operation above or below the limit values listed in the specifications Force majeure Changes additions to or conversion of the unit are not permitted without the written permis sion from the manufacturer It is likewise forbidden to install additional components that have not been tested together with the unit If it becomes clear th...

Страница 5: ...tput freq 1 kHz level 10 V 1 PT1000 sensor input measuring range 40 C to 300 C 2 Permissible cable length of sensors and appliances Sensor S1 and S2 10m PWM 0 10V 3m mechanical relay 10m VFS 3m Permissible ambient conditions Ambient temperature for controller operation 0 C 40 C for transport storage 0 C 60 C Air humidity for controller operation max 85 rel humidity at 25 C for transport storage no...

Страница 6: ... Analysis and monitoring of the system by means of statistical graphics etc Extensive setting menus with explanations Menu block can be activated to prevent unintentional setting changes Resetting to previously selected values or factory settings B 4 Scope of supply Fresh water controller SFWC replacement fuse 2A slow blow Installation and operating instructions SFWC Optionally contained depending...

Страница 7: ...t claim to be complete The controller does not replace safety devices under any circumstances Depending on the specific application additional system components and safety components may be mandatory such as check valves non return valves safety temperature limiters scalding protectors etc and must there fore be provided Caution Basic scheme Additional function circulation ...

Страница 8: ...face is as even as possi ble so that the housing does not become distorted when it is screwed on 5 Using a drill and size 6 bit drill 2 holes at the points marked on the wall and push in the plugs Also possible is the installati on with 4 drill holes 6 Insert the upper screw and screw it in slightly 7 Fit the upper part of the housing and insert the other screws 8 Align the housing and tighten the...

Страница 9: ...d side of the unit and mains voltage cables only into the right hand side The customer must provide an all pole disconnecting device e g a heating emergency switch The cables being connected to the unit must not be stripped by more than 55mm and the cable jacket must reach into the housing just to the other side of the strain relief We recommend the use of flexible cables to ease the installation ...

Страница 10: ... cable or end splice just push the cables in see fig C 2 1 d 6 Plug Female connectors into onboard headers 7 Hinge the upper part of the casing on the top of the lower part and close the casing gently 8 Fasten with screw 9 Switch on mains voltage and place controller in operation C 2 1 e C 2 1 c C 2 1 d screw driver C 2 1 f To remove the female connector block from the header carefully bend the la...

Страница 11: ...tended to a maximum of 10m using a cable with a cross section of at least 0 75mm Sensor cables for the VFS sensor can be extended to 3m Make sure that there is no contact resistance Example Connections and dimensions of the Vortex Flow Sensors VFS2 40 3 4 1 10 7 cm Installation Achtung Controller and VFS sensor have to have the same ground potential The VFS sensor uses a functional earth connector...

Страница 12: ...protective conductor must be connected to the PE metal terminal block Low voltage max 12VAC DC connection in the left hand terminal compartment Terminal Connection for S1 Circulation opt S2 Storage opt V1 0 10V PWM signal primary pump 0 10V PWM signal The polarity of the sensors is freely selectable Relay connection changes depending on the additional functions selected VFS sensor has to be connec...

Страница 13: ...n entry or to exit a menu If applicable there will be a request for confirmation as to whether the changes which have been made should be saved The function of each of the other three keys 4 is shown in the display line directly above the keys the right hand key is general ly has a confirmation and selection function Examples of key functions enlarge shrink values scroll menu down up yes no approv...

Страница 14: ...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 operation Program selection clock etc Functions to prevent damage to system and user Against unintentional setting changes at critical points For diagnosis in the event of an error Operation 1 Measurements 2 Statistics 3 Operati...

Страница 15: ... under operating mode Manual should be used to test the switch outputs with the consumers connected and to check the sensor values for plausibility Then switch on automatic mode look at the selected setting again or adjust it if desired Pressing the esc more than once takes you back step by step to the selection mode thus cancelling the commissioning help Finally menu 3 2 under operating mode Manu...

Страница 16: ...g the callibration process a text is shown that the flow rate is measured and no tapping is allowed After confirmation the circulation pump is switched off and the controller is waiting until the flow ratehasdroppedto0L min Afterwardsonlythecirculationpumpisswitchedonandafteranother 60 seconds the flow rate is measured The display shows a Please wait sign After another minute the flow rate is meas...

Страница 17: ...or incorrect 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 compensated for by making entries on the controller Follow the instruc tions under 6 4 What measurement values are displayed depends on the selected program the connected sensors and the specific devic...

Страница 18: ...acturer accepts no liability for the recorded data Caution Statistics 2 1 Operating hours Display of operating hours of the relays connected to the controller 2 2 Heat output Display of the heat output of the system in KWh 2 3 Graphic overview This provides a clearly organised display of the data listed under 2 1 2 2 as a bar graph Vari ous time ranges are available for comparison The two left han...

Страница 19: ...returns to the last operating mode selected Caution When the operating mode Off is activated all controller functions are switched off The measured temperatures are still displayed to provide an overview Caution When operating mode Manual is activated the current temperatures and the selected parameters are no longer considered There is a danger of scalding or serious damage to the system The oper...

Страница 20: ...ed 4 1 Tset Setpoint at VFS sensor The controller SFWC attempts to reach and maintain a constant temperature in the circulation by controlling the speed of the hot water pump Danger Temperature values which are set too high can lead to scalding or damage to the system Scalding protection must be provided by the customer 4 2 Tmax Maximum tap water temperature at VFS Maximum allowable temperature at...

Страница 21: ...ion stays on till the circulation target temperature Circ Tmin hysteresis is reached at the circulatiopn sensor Always on Circulation pump is switched on in set periods 4 4 2 Circ Tmin Minimum temperature at sensor S2 If the temperature drops below Circ Tmin and the circulation is enabled see 4 4 5 Circulation period the circulation pump is started 4 4 3 Circ hysteresis 4 4 4 Circ maximum Flow rat...

Страница 22: ...e storage sensor Tap support is deactivated when the storage temperature drops below Min storage temp See F3 Calibration on page 16 4 10 Comfort If this function is activated the heat exchanger will rinse for 5 seconds every 15 minutes so that hot water is available as soon as possible 22 Settings 4 4 5 Circulation period Period where the circulation pump is enabled Settheoperationtimesofthecircul...

Страница 23: ...ections Protective functions can be used to activate and set various protec tive functions The menu is closed by pressing esc or selecting Exit Protective functions 5 Protections Protective functions Caution This does not under any circum stances replace the safety facilities to be provided by the customer 5 1 Antilegionella Caution Thisanti Legionellafunctiondoesnotprovidecompleteprotectionagains...

Страница 24: ... in the primary circuit is not always guaranteed to suffice this function is used With this function activated When no storage sensor is connected If the setpoint temperature is not reached after 60 seconds the currently measured tempera ture 3 C is used as new setpoint temperature Once the pump in the primary circuit stops the setpoint temperature is raised to the set Tset again When the storage ...

Страница 25: ... Speed control of e g High efficency pumps by 0 10V signal PWM Speed control of e g High efficency pumps by PWM signal 6 1 2 Pump In this menu preconfigured profiles for various pumps can be selected Please note that individual settings are still possible even when a profile has been selected 6 1 3 Output Signal This menu determines the type of pump used Solar pumps perform at their highest power ...

Страница 26: ...ded to turn the pump on at minimum speed 6 1 6 0 10V Max PWM Max This determines the the output voltage signal for the highest speed of the pump that is used e g during purging or manual operation 6 1 7 Show signal Displays the set signal in text and a graphical diagram ...

Страница 27: ...d 6 2 2 min speed The maximum speed of the pump is specified here During the setting the pump runs at the specified speed and the flow rate can be determined The minimum speed of the pump at relay R1 is specified here During the setting the pump runs at the specified speed and the flow rate can be determined The additional functions explained here can be assigned to relay 1 Pay special atten tion ...

Страница 28: ...ve been made can be reset thus returning the controller to its delivery state Special functions 6 7 Time Date This menu is used to set the current time and date Caution Settings are only necessary in special cases at the time of initial commissioning by the specialist Incorrect measurement values can lead to unpredictable errors Caution May only be started by a specialist during commissioning Obse...

Страница 29: ...o and from DST DST Daylight Savings Time 6 8 Daylight saving time When active the displays backlight is switched off after 2 minutes of inactivity 6 9 Sleep mode Caution If a message is waiting the backlight is not switched off This menu changes the displayed temperature unit 6 10 Temperature unit ...

Страница 30: ...ssary 1 Measurement values 2 Analysis 3 Display mode 8 Menu lock 9 Service values To lock the other menus select Menu lock on To enable the menus again select Menu lock off Menu lock 7 1 Menu lock This menu is used to switch between expert mode in which all settings are available and simple mode in which only the following menus are available 1 Measurement values 2 Statistics 4 3 Tset 4 4 1 Circul...

Страница 31: ...sed for remote diagnosis by a specialist or the manufacturer in the event of an error etc Themenucanbeclosedatanytimebypressing esc Service values 8 Service values Caution Enter the values at the time when the error occurs e g in the table ...

Страница 32: ...select the language for the menu guidance This is queried automatically during initial commissioning The choice of languages may differ however depend ing on the device design Language selection is not available in every device design 9 Language ...

Страница 33: ...error press the key under the warning or info symbol Possible error messages Sensor x defective Time date Notes for the specialist Means that either the sensor the sensor input at the controller or the connecting cable is was defective Resistance table on page 5 This display appears automatically after a mains failure because the time date have to be checked and reset if necessary LEDflashes warni...

Страница 34: ...ternal source of the error e g pump and exchange it Then first recommission the controller and check the function of the switch outputs in manual mode as described under 3 2 Repairs and maintenance may only be performed by a specialist Before working on the unit switch off the power supply and secure it against being switched on again Check for the absence of power Danger Malfunctions Fuse Fig Z 2...

Страница 35: ...rming maintenance Check the date and time Assess check plausibility of analyses sell also 2 1 Operating hours on page 18 Check the error memory see also 2 4 Error messages on page 18 Verify check plausibility of the current measurement values see also 1 Measurement values on page 17 Check the switch outputs consumers in manual mode see also 3 2 Manual on page 19 Poss optimise the parameter setting...

Страница 36: ...uctions have been created with the greatest possible care thepossibilityofincorrectorincompleteinformationcannotbeexcluded Subject as a basic principle to errors and technical changes Notes Hydraulic variant set Commissioned on Commissioned by ...

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