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Navigation, application A375, Common controller settings

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Application A375, Common controller settings

MENU

ID no. Function

A375.1

A375.2

A375.3

Time & Date

Selectable

(

Holiday

Selectable

(

Input overview 1

Outdoor T

(

Outdoor acc. T

(

Room T

(

Boiler T

(

Return T

(

Ext. desired T

(

Input overview 2

Outdoor T

(

Outdoor acc. T

(

Room T

(

Flow T

(

Return T

(

Tank T

(

Input overview 3

Tank T

(

Log 1

(sensors)

Outdoor T

Log today

(

Room T

Log yesterday

(

Room T & desired

Log 2 days

(

Boiler T & desired

Log 4 days

(

Return T & limit

(

Log 2

(sensors)

Outdoor T

Log today

(

Room T

Log yesterday

(

Flow T & desired

Log 2 days

(

Return T & limit

Log 4 days

(

Tank T & desired

(

Log 3

(sensors)

Tank T & desired

Log today

(

Log yesterday

(

Log 2 days

(

Log 4 days

(

Output override

(

88 | © Danfoss | 2017.09

VI.GU.L2.02

Operating Guide ECL Comfort 210/296/310, application A275/A375

Summary of Contents for ECL Comfort 210

Page 1: ...nual control 98 3 7 Schedule 99 4 0 Settings overview 100 5 0 Settings 103 5 1 Introduction to Settings 103 5 2 Flow boiler temperature 104 5 3 Tank temperature 109 5 4 Room limit 113 5 5 Return limit 115 5 6 Optimization 121 5 7 Boiler 127 5 8 Control parameters 135 5 9 Application 140 5 10 Alarm 149 5 11 Alarm overview 153 5 12 Anti bacteria 154 6 0 Common controller settings 156 6 1 Introductio...

Page 2: ... Modbus and Ethernet Internet communication The application A275 complies with ECL Comfort controller 210 and 310 as of software version 1 11 visible at start up of the controller and in Common controller settings in System Additional documentation for ECL Comfort 210 and accessories is available on www ecl doc danfoss com A275 A375 navigation in general A275 1 A375 1 A275 2 A375 2 A275 3 A375 3 C...

Page 3: ...ied and authorized personnel only Local legislations must be respected This comprises also cable dimensions and type of isolation double isolated at 230 V A fuse for the ECL Comfort installation is max 10 A typically The ambient temperature ranges for ECL Comfort in operation are ECL Comfort 210 310 0 55 C ECL Comfort 296 0 45 C Exceeding the temperature range can result in malfunctions Installati...

Page 4: ...an once it means that there are special settings for one or more system types It will be marked with the system type in question e g 12174 A266 9 Parameters indicated with an ID no like 1x607 mean a universal parameter x stands for circuit parameter group Disposal Note This product should be dismantled and its components sorted if possible in various groups before recycling or disposal Always foll...

Page 5: ...gets above a minimum temperature A minimum ON time can be set for the burner in order to increase the boiler s efficiency The return temperature S5 to the boiler should not be too high condensing boiler or too low oil or gas fired boiler If so the desired boiler temperature can be decreased or increased Furthermore the return temperature limitation can be dependent of the outdoor temperature Typic...

Page 6: ...me can be set for the burner in order to increase the boiler s efficiency The return temperature S5 to the boiler should not be too high condensing boiler or too low oil or gas fired boiler If so the desired boiler temperature can be decreased or increased Furthermore the return temperature limitation can be dependent of the outdoor temperature Typically the lower the outdoor temperature the highe...

Page 7: ...A post run time can be set An anti bacteria function is available for activation on the selected days of the week The DHW heating has priority i e pump P3 is ON and pump P1 is OFF If the application has a changeover valve priority valve for the DHW heating the circulation pump P1 is still ON during DHW heating Typical A275 2 application Pressure relief valve The shown diagram is a fundamental and ...

Page 8: ...ler should not be too high condensing boiler or too low oil or gas fired boiler If so the desired boiler temperature can be decreased or increased Furthermore the return temperature limitation can be dependent of the outdoor temperature Typically the lower the outdoor temperature the higher the accepted return temperature If the measured room temperature measured by S7 or the remote control unit E...

Page 9: ...door temperature the higher the accepted return temperature If the measured room temperature measured by S8 or the remote control unit ECA 30 does not equal the desired room temperature the desired flow temperature can be adjusted The circulation pump P4 is ON at heat demand or at frost protection The heating can be switched OFF when the outdoor temperature is higher than a selectable value or a D...

Page 10: ...eek The DHW heating has priority i e pump P3 is ON and pump P1 is OFF If the application has a changeover valve priority valve for the DHW heating the circulation pump P1 is still ON during DHW heating Typical A275 3 application Pressure relief valve The shown diagram is a fundamental and simplified example and does not contain all components that are necessary in a system All named components are...

Page 11: ...larm A1 relay R4 and the alarm symbol can be activated if a temperature sensor or its connection disconnects shortcircuits Alarm A275 3 The alarm symbol can be activated if a temperature sensor or its connection disconnects shortcircuits if the actual flow temperature at S4 heating circuit 2 differs from the desired flow temperature VI GU L2 02 Danfoss 2017 09 11 Operating Guide ECL Comfort 210 29...

Page 12: ...d 3 4 5 1 2 and so on semi automatic rotating sequence example First period 1 2 3 4 5 second period 1 3 4 5 2 third period 1 4 5 2 3 and so on Furthermore the boiler protection function will switch ON the circulation pump when the boiler temperature gets above a minimum value A minimum ON time can be set for the burner in order to increase the boiler s efficiency The return temperature S5 to the b...

Page 13: ... period 2 3 4 5 1 third period 3 4 5 1 2 and so on semi automatic rotating sequence example First period 1 2 3 4 5 second period 1 3 4 5 2 third period 1 4 5 2 3 and so on Furthermore the boiler protection function will switch ON the circulation pump when the boiler temperature gets above a minimum value A minimum ON time can be set for the burner in order to increase the boiler s efficiency The r...

Page 14: ...le for up to 3 ON periods per day An anti bacteria function is available for activation on selected days of the week The DHW heating can have priority i e pump P3 is ON and pump P1 is OFF If the application has a changeover valve priority valve for the DHW heating the circulation pump P1 is still ON during DHW heating Typical A375 2 application Pressure relief valve The shown diagram is a fundamen...

Page 15: ...example First period 1 2 3 4 5 second period 1 3 4 5 2 third period 1 4 5 2 3 and so on Furthermore the boiler protection function will switch ON the circulation pump when the boiler temperature gets above a minimum value A minimum ON time can be set for the burner in order to increase the boiler s efficiency The return temperature S5 to the boiler should not be too high condensing boiler or too l...

Page 16: ...emperature the higher the accepted return temperature If the measured room temperature measured by S8 or the remote control unit ECA 30 does not equal the desired room temperature the desired flow temperature can be adjusted The circulation pump P4 is ON at heat demand or at frost protection The heating can be switched OFF when the outdoor temperature is higher than a selectable value or a DHW hea...

Page 17: ...W heating can have priority i e pump P3 is ON and pump P1 is OFF If the application has a changeover valve priority valve for the DHW heating the circulation pump P1 is still ON during DHW heating Typical A375 3 application Pressure relief valve The shown diagram is a fundamental and simplified example and does not contain all components that are necessary in a system All named components are conn...

Page 18: ...ion Alarm A375 1 A375 2 and A375 3 Alarm A1 relay R6 and the alarm symbol can be activated if a temperature sensor or its connection disconnects shortcircuits Alarm A375 3 Alarm A1 relay R6 and the alarm symbol can be activated if the actual flow temperature at S4 heating circuit 2 differs from the desired flow temperature The controller is pre programmed with factory settings that are shown in th...

Page 19: ...mfort controller is a universal controller that can be used for various systems Based on the shown standard systems it is possible to configure additional systems In this chapter you find the most frequently used systems If your system is not quite as shown below find the diagram which has the best resemblance with your system and make your own combinations See the Installation Guide delivered wit...

Page 20: ...eating circuit pressure relief valve A275 1 example b Boiler ON OFF control for a heating circuit The boiler circuit is equipped with a low loss header pressure relief valve 20 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 21: ... circuit circuit 2 DHW heating is managed by pump P3 MENU Settings Application Ch o valve P 12051 ON The desired DHW heating temperature must influence the desired boiler temperature MENU Settings Application Tank sec prim 12053 OFF Please note If Ch o valve P in 12051 is set to OFF P3 will be switched on at DHW heating The desired boiler temperature will still lie a number of degrees above the de...

Page 22: ...is continuously switched ON Special settings for type A275 2 example b Navigation ID no Recommended setting DHW circuit circuit 2 DHW heating is managed by changeover valve P3 M1 MENU Settings Application Ch o valve P 12051 OFF The desired DHW heating temperature must influence the desired boiler temperature MENU Settings Application Tank sec prim 12053 OFF 22 Danfoss 2017 09 VI GU L2 02 Operating...

Page 23: ...5 2 example c Navigation ID no Recommended setting DHW circuit circuit 2 DHW heating is managed by pump P3 MENU Settings Application Ch o valve P 12051 ON The desired DHW heating temperature must influence the desired boiler temperature MENU Settings Application Tank sec prim 12053 OFF Please note If Ch o valve P in 12051 is set to OFF P3 will be switched on at DHW heating The desired boiler tempe...

Page 24: ... a number of degrees above the desired DHW temperature P1 is switched ON Special settings for type A275 2 example d Navigation ID no Recommended setting DHW circuit circuit 2 DHW heating is managed by changeover valve P3 M1 MENU Settings Application Ch o valve P 12051 OFF The desired DHW heating temperature must influence the desired boiler temperature MENU Settings Application Tank sec prim 12053...

Page 25: ...flow temperature from circuit 2 MENU Settings Application Demand offset 11017 3 K This value is added to the heat demand value from circuit 2 Heating circuit circuit 2 Circuit 2 must be able to send a heat demand desired flow temperature to circuit 1 MENU Settings Application Send desired T 12500 ON Circuit 2 can be closed during the DHW heating process MENU Settings Application DHW priority 12052...

Page 26: ...red flow temperature from circuit 2 MENU Settings Application Demand offset 11017 3 K This value is added to the heat demand value from circuit 2 Heating circuit circuit 2 Circuit 2 must be able to send a heat demand desired flow temperature to circuit 1 MENU Settings Application Send desired T 12500 ON Circuit 2 can be closed during the DHW heating process MENU Settings Application DHW priority 1...

Page 27: ...e a heat demand desired flow temperature from circuit 2 MENU Settings Application Demand offset 11017 3 K This value is added to the heat demand value from circuit 2 Heating circuit circuit 2 Circuit 2 must be able to send a heat demand desired flow temperature to circuit 1 MENU Settings Application Send desired T 12500 ON Circuit 2 must be closed during the DHW heating process MENU Settings Appli...

Page 28: ... to receive a heat demand desired flow temperature from circuit 2 MENU Settings Application Demand offset 11017 3 K This value is added to the heat demand value from circuit 2 Heating circuit circuit 2 Circuit 2 must be able to send a heat demand desired flow temperature to circuit 1 MENU Settings Application Send desired T 12500 ON Circuit 2 can be closed during the DHW heating process MENU Setti...

Page 29: ...uit 1 must be able to receive a heat demand desired flow temperature from circuit 2 MENU Settings Application Demand offset 11017 3 K This value is added to the heat demand value from circuit 2 Heating circuit circuit 2 Circuit 2 must be able to send a heat demand desired flow temperature to circuit 1 MENU Settings Application Send desired T 12500 ON Circuit 2 can be closed during the DHW heating ...

Page 30: ...cation Demand offset 11017 3 K This value is added to the heat demand value from circuit 2 Heating circuit circuit 2 Circuit 2 must be able to send a heat demand desired flow temperature to circuit 1 MENU Settings Application Send desired T 12500 ON Circuit 2 can be closed during the DHW heating process MENU Settings Application DHW priority 12052 Set OFF when not to be closed set ON when to be cl...

Page 31: ...circuit circuit 1 Circuit 1 must be able to receive a heat demand desired flow temperature from circuit 2 MENU Settings Application Demand offset 11017 3 K This value is added to the heat demand value from circuit 2 Heating circuit circuit 2 Circuit 2 must be able to send a heat demand desired flow temperature to circuit 1 MENU Settings Application Send desired T 12500 ON VI GU L2 02 Danfoss 2017 ...

Page 32: ... 2 is activated additionally The last burner step can be disabled if the outdoor temperaure is higher than a set value Special settings for type A375 1 example a Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 3 Number of total burner steps MENU Settings Boiler Steps 11073 2 32 Danfoss 2017 09 VI...

Page 33: ...tep is activated additionally The last burner step can be disabled if the outdoor temperaure is higher than a set value Special settings for type A375 1 example b Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 0 Number of total burner steps MENU Settings Boiler Steps 11073 2 VI GU L2 02 Danfoss ...

Page 34: ...demand At increased heat demand burner 2 is activated additionally The last burner step can be disabled if the outdoor temperature is higher than a set value Special settings for type A375 1 example c Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 3 Number of total burner steps MENU Settings Boi...

Page 35: ...emand At increased heat demand the next burner step is activated additionally The last burner step can be disabled if the outdoor temperature is higher than a set value Special settings for type A375 1 example d Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 0 Number of total burner steps MENU S...

Page 36: ...re boiler 1 Burner steps are activated according to heat demand The last burner step can be disabled if the outdoor temperaure is higher than a set value Special settings for type A375 1 example e Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 4 Number of total burner steps MENU Settings Boiler ...

Page 37: ... demand The last burner step can be disabled if the outdoor temperaure is higher than a set value Special settings for type A375 1 example f Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 0 Number of total burner steps MENU Settings Boiler Steps 11073 4 VI GU L2 02 Danfoss 2017 09 37 Operating G...

Page 38: ...Burner steps are activated according to heat demand The last burner step can be disabled if the outdoor temperaure is higher than a set value Special settings for type A375 1 example g Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 0 Number of total burner steps MENU Settings Boiler Steps 11073 ...

Page 39: ...ing day Boiler 1 4 5 6 7 8 2 3 and so on Burner steps are activated according to heat demand The last burner step can be disabled if the outdoor temperaure is higher than a set value Special settings for type A375 1 example h Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 1 Number of total burne...

Page 40: ...ollowing day Boiler 1 2 5 6 7 8 3 4 and so on Burner steps are activated according to heat demand The last burner step can be disabled if the outdoor temperaure is higher than a set value Special settings for type A375 1 example i Navigation ID no Recommended setting Heating circuit circuit 1 Sequence type code for controlling the burners MENU Settings Boiler Sequence type 11072 2 Number of total ...

Page 41: ...oller controls the boilers 1 and 2 The extension module ECA 32 controls boiler 3 4 5 and 6 The ECL Comfort 310 controller controls boiler 7 and 8 via auxillary relays The burners boilers are controlled as described in the A375 1 examples a i The DHW circuit is controlled as described in the A275 2 examples VI GU L2 02 Danfoss 2017 09 41 Operating Guide ECL Comfort 210 296 310 application A275 A375...

Page 42: ...n The ECL Comfort 310 controller controls the boilers 1 and 2 The extension module ECA 32 controls boiler 3 4 5 and 6 The ECL Comfort 310 controller controls boiler 7 and 8 via auxillary relays The mixing circuit 2 is controlled as described in the A275 3 examples The DHW circuit 3 is controlled as described in the A275 2 examples 42 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 ...

Page 43: ...o its base part secure the controller with the locking pin To prevent injuries to persons or the controller the controller has to be securely locked into the base For this purpose press the locking pin into the base until a click is heard and the controller no longer can be removed from the base If the controller is not securely locked into the base part there is a risk that the controller during ...

Page 44: ...base part on a DIN rail Establish the electrical connections and position the controller in the base part Secure the controller with the locking pin Dismounting the ECL Comfort controller In order to remove the controller from the base part pull out the locking pin by means of a screwdriver The controller can now be removed from the base part The easy way to lock the controller to its base or unlo...

Page 45: ...on a wall with a smooth surface Establish the electrical connections Place the ECA 30 31 in the base part Mounting in a panel Mount the ECA 30 in a panel using the ECA 30 frame kit order code no 087H3236 Establish the electrical connections Secure the frame with the clamp Place the ECA 30 in the base part The ECA 30 can be connected to an external room temperature sensor The ECA 31 must not be mou...

Page 46: ...placed so that it measures a representative return temperature Room temperature sensor ESM 10 ECA 30 31 Remote Control Unit Place the room sensor in the room where the temperature is to be controlled Do not place it on outside walls or close to radiators windows or doors Boiler temperature sensor ESMU ESM 11 or ESMC Place the sensor according to the boiler manufacturer s specification Air duct tem...

Page 47: ...Pt 1000 temperature sensor IEC 751B 1000 Ω 0 C Relationship between temperature and ohmic value VI GU L2 02 Danfoss 2017 09 47 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 48: ...cal connections 230 V a c The common ground terminal is used for connection of relevant components pumps motorized control valves ECL 210 310 ECL 296 48 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 49: ...uit 1 4 2 A 230 V a c 10 Supply voltage 230 V a c neutral N 9 Supply voltage 230 V a c live L 8 M1 Phase for motorized changeover valve output circuit 2 A275 2 only 7 M1 Motorized changeover valve DHW circuit direction A275 2 only 0 2 A 230 V a c 6 M1 Motorized changeover valve heating circuit direction A275 2 only 0 2 A 230 V a c Relay contacts 4 A for ohmic load 2 A for inductive load Factory es...

Page 50: ...Alternative connection for P3 M1 changeover valve A275 2 50 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 51: ...e for motorized changeover valve output M1 circuit 3 7 M1 Motorized changeover valve DHW circuit direction 0 2 A 230 V a c 6 M1 Motorized changeover valve heating circuit direction 0 2 A 230 V a c 5 Phase for motorized control valve M2 circuit 2 0 2 A 230 V a c 4 M2 Motorized control valve opening circuit 2 0 2 A 230 V a c 3 M2 Motorized control valve closing circuit 2 0 2 A 230 V a c Relay contac...

Page 52: ...Alternative connection for P3 M1 changeover valve 52 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 53: ...ase for pump and burners 13 B2 Burner ON OFF 4 2 A 230 V a c 12 B1 Burner ON OFF 4 2 A 230 V a c 11 P1 Circulation pump ON OFF 4 2 A 230 V a c 10 Supply voltage 230 V a c neutral N 9 Supply voltage 230 V a c live L Relay contacts 4 A for ohmic load 2 A for inductive load Factory established jumpers 5 to 8 9 to 14 L to 5 and L to 9 N to 10 VI GU L2 02 Danfoss 2017 09 53 Operating Guide ECL Comfort ...

Page 54: ...45 Phase for burner B6 44 B6 Burner ON OFF 4 2 A 230 V a c 43 Not to be used 42 Phase for burner B7 41 B7 Burner ON OFF 4 2 A 230 V a c 40 Phase for burner B8 39 B8 Burner ON OFF 4 2 A 230 V a c Relay contacts 4 A for ohmic load 2 A for inductive load 54 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 55: ... V a c 10 Supply voltage 230 V a c neutral N 9 Supply voltage 230 V a c live L 8 Phase for motorized changeover valve output M1 7 M1 Motorized changeover valve DHW circuit direction circuit 2 A375 2 or circuit 3 A375 3 0 2 A 230 V a c 6 M1 Motorized changeover valve heating circuit direction circuit 2 A375 2 or circuit 3 A375 3 0 2 A 230 V a c 5 Phase for motorized control valve M2 circuit 2 4 M2 ...

Page 56: ... 230 V a c 46 Not to be used 45 Phase for burner B4 44 B4 Burner ON OFF 4 2 A 230 V a c 43 Not to be used 42 Phase for burner B5 41 B5 Burner ON OFF 4 2 A 230 V a c 40 Phase for burner B6 39 B6 Burner ON OFF 4 2 A 230 V a c Relay contacts 4 A for ohmic load 2 A for inductive load 56 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 57: ...control valve closing circuit 2 A375 3 0 2 A 230 V a c 2 K7 Auxilliary relay for control of burner step 7 0 2 A 230 V a c 1 K8 Auxilliary relay for control of burner step 8 0 2 A 230 V a c Wire cross section 0 5 1 5 mm Incorrect connection can damage the electronic outputs Max 2 x 1 5 mm wires can be inserted into each screw terminal VI GU L2 02 Danfoss 2017 09 57 Operating Guide ECL Comfort 210 2...

Page 58: ...ation A275 3 A375 3 The drawings below are intended for general use With safety thermostat 1 step closing Motorized control valve without safety function With safety thermostat 1 step closing Motorized control valve with safety function 58 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 59: ...rol valve is closed gradually At a higher temperature the ST temperature the safety circuit in the motorized control valve closes the valve immediately When ST is activated by a high temperature the safety circuit in the motorized control valve closes the valve immediately VI GU L2 02 Danfoss 2017 09 59 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 60: ...0 5 1 5 mm Incorrect connection can damage the electronic outputs Max 2 x 1 5 mm wires can be inserted into each screw terminal 60 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 61: ...1 K1 Control of circulation pump ON OFF circuit 1 4 2 A 24 V a c 10 Supply voltage 24 V a c SN 9 Supply voltage 24 V a c SP 8 M1 Phase for motorized changeover valve output circuit 2 A275 2 only 7 M1 Motorized changeover valve DHW circuit direction A275 2 only 1 A 24 V a c 6 M1 Motorized changeover valve heating circuit direction A275 2 only 1 A 24 V a c Relay contacts 4 A for ohmic load 2 A for i...

Page 62: ...Alternative connection for P3 M1 changeover valve A275 2 62 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 63: ...24 V a c SN 9 Supply voltage 24 V a c SP 8 Phase for motorized changeover valve output M1 circuit 3 7 M1 Motorized changeover valve DHW circuit direction 1 A 24 V a c 6 M1 Motorized changeover valve heating circuit direction 1 A 24 V a c 5 Phase for motorized control valve M2 circuit 2 1 A 24 V a c 4 M2 Motorized control valve opening circuit 2 1 A 24 V a c 3 M2 Motorized control valve closing cir...

Page 64: ...Alternative connection for P3 M1 changeover valve 64 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 65: ...A 24 V a c 14 Phase for control of pump and burners 13 B2 Burner ON OFF 4 2 A 24 V a c 12 B1 Burner ON OFF 4 2 A 24 V a c 11 K1 Control of circulation pump ON OFF 4 2 A 24 V a c 10 Supply voltage 24 V a c SN 9 Supply voltage 24 V a c SP Relay contacts 4 A for ohmic load 2 A for inductive load Factory established jumpers 5 to 8 9 to 14 L to 5 and L to 9 N to 10 VI GU L2 02 Danfoss 2017 09 65 Operat...

Page 66: ...a c 46 Not to be used 45 Phase for burner B6 44 B6 Burner ON OFF 4 2 A 24 V a c 43 Not to be used 42 Phase for burner B7 41 B7 Burner ON OFF 4 2 A 24 V a c 40 Phase for burner B8 39 B8 Burner ON OFF 4 2 A 24 V a c Relay contacts 4 A for ohmic load 2 A for inductive load 66 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 67: ...ontrol of circulation pump ON OFF circuit 1 4 2 A 24 V a c 10 Supply voltage 24 V a c SN 9 Supply voltage 24 V a c SP 8 Phase for motorized changeover valve output M1 7 M1 Motorized changeover valve DHW circuit direction circuit 2 A375 2 or circuit 3 A375 3 1 A 24 V a c 6 M1 Motorized changeover valve heating circuit direction circuit 2 A375 2 or circuit 3 A375 3 1 A 24 V a c 5 Phase for motorized...

Page 68: ...B3 Burner ON OFF 4 2 A 24 V a c 46 Not to be used 45 Phase for burner B4 44 B4 Burner ON OFF 4 2 A 24 V a c 43 Not to be used 42 Phase for burner B5 41 B5 Burner ON OFF 4 2 A 24 V a c 40 Phase for burner B6 39 B6 Burner ON OFF 4 2 A 24 V a c Relay contacts 4 A for ohmic load 2 A for inductive load 68 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 69: ... K7 Auxilliary relay for control of burner step 7 1 A 24 V a c 1 K8 Auxilliary relay for control of burner step 8 1 A 24 V a c Do not connect 230 V a c powered components to a 24 V a c power supplied controller directly Use auxilliary relays K to separate 230 V a c from 24 V a c Wire cross section 0 5 1 5 mm Incorrect connection can damage the electronic outputs Max 2 x 1 5 mm wires can be inserte...

Page 70: ...erature sensor circuit 1 ESM 10 22 and 30 S8 A275 3 only Room temperature sensor circuit 2 ESM 10 If the outdoor temperature sensor is not connected or the cable is short circuited the controller assumes that the outdoor temperature is 0 zero C The boiler flow temperature sensor must always be connected in order to have the desired functionality If the sensor is not connected or the cable is short...

Page 71: ...V for external control of desired boiler temperature circuit 1 If the outdoor temperature sensor is not connected or the cable is short circuited the controller assumes that the outdoor temperature is 0 zero C The boiler flow temperature sensor must always be connected in order to have the desired functionality If the sensor is not connected or the cable is short circuited the motorized control va...

Page 72: ... external room temperature sensor has been connected ECA 30 31 must be repowered The communication to the ECA 30 31 must be set up in the ECL Comfort controller in ECA addr The ECA 30 31 must be set up accordingly After application setup the ECA 30 31 is ready after 2 5 min A progress bar in the ECA 30 31 is displayed ECA information message Application req newer ECA The software firmware of your ...

Page 73: ...er can be used as master or slave in master slave systems via the internal ECL 485 communication bus 2 x twisted pair cable The ECL 485 communication bus is not compatible with the ECL bus in ECL Comfort 110 200 300 and 301 Terminal Description Type recomm 30 Common terminal 31 12 V ECL 485 communication bus 32 B ECL 485 communication bus 33 A ECL 485 communication bus Cable 2 x twisted pair Only ...

Page 74: ...ctrical connections communication Electrical connections Modbus Electrical connections M bus Example M bus connections 74 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 75: ...g 1 The controller is new from the factory the ECL Application Key is not inserted 2 The controller already runs an application The ECL Application Key is inserted but the application needs to be changed 3 A copy of the controllers settings is needed for configuring another controller User settings are among others desired room temperature desired DHW temperature schedules heat curve limitation va...

Page 76: ...following animation will be shown when the software is being updated Progress bar During update Do not remove the KEY If the key is removed before the hour glass is shown you have to start afresh Do not disconnect the power If the power is interrupted when the hour glass is shown the controller will not work 76 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A3...

Page 77: ...e contents of the ECL Application Key procedure A or B is taking place A The ECL Application key contains factory settings The controller reads transfers data from the ECL Application Key to ECL controller The application is installed and the controller resets and starts up B The ECL Application key contains changed system settings Push the dial repeatedly NO Only factory settings from the ECL App...

Page 78: ...e that the Application Key must be inserted Action Purpose Examples Choose MENU in any circuit Confirm Choose the circuit selector at the top right corner in the display Confirm Choose Common controller settings Confirm Choose Key functions Confirm Choose Erase application Confirm with Yes The controller resets and is ready to be configured Follow the procedure described in situation 1 78 Danfoss ...

Page 79: ...Choose ECL or KEY ECL or KEY Push the dial repeatedly to choose copy direction Choose System settings or User settings NO or YES Push the dial repeatedly to choose Yes or No in Copy Push to confirm Choose Start copying The Application Key or the controller is updated with special system or user settings ECL Data will be copied from the Application Key to the ECL Controller KEY Data will be copied ...

Page 80: ...ata on the ECL Application Key can be damaged It is possible to copy settings from one ECL Comfort controller to another controller provided that the two controllers are from the same series 210 or 310 Furthermore when the ECL Comfort controller has been uploaded with an application key minimum version 2 44 it is possible to upload personal settings from application keys minimum version 2 14 The K...

Page 81: ... application see Inserting the Application Key Is the correct language chosen see Language in Common controller settings Is the time date set correctly see Time Date in Common controller settings Is the right application chosen see Identifying the system type Check that all settings in the controller see Settings overview are set or that the factory settings comply with your requirements Choose ma...

Page 82: ...turn limit 11031 12031 High T out X1 11032 12032 Low limit Y1 11033 12033 Low T out X2 11034 12034 High limit Y2 11035 12035 Infl max 11036 12036 Infl min 11037 12037 Adapt time 11085 12085 Priority Optimization 11011 12011 Auto saving 11012 12012 Boost 12013 Ramp 11014 12014 Optimizer 11026 12026 Pre stop 11020 12020 Based on 11021 12021 Total stop 11179 12179 Cut out Control par 12174 Motor pr 1...

Page 83: ...3500 Send desired T 11022 12022 P exercise 12023 M exercise 12052 DHW priority 12076 Circ P frost T 11077 12077 P frost T 11078 12078 P heat T 11040 12040 P post run 11093 12093 13093 Frost pr T 11141 12141 13141 Ext input 11142 12142 13142 Ext mode Holiday Alarm Temp monitor 12147 Upper difference 12148 Lower difference 12149 Delay 12150 Lowest temp Alarm overview Anti bacteria Influence overview...

Page 84: ... T Flow T Return T Tank T Input overview 3 Tank T Log 1 sensors Outdoor T Log today Room T Log yesterday Room T desired Log 2 days Boiler T desired Log 4 days Return T limit Log 2 sensors Outdoor T Log today Room T Log yesterday Flow T desired Log 2 days Return T limit Log 4 days Tank T desired Log 3 sensors Tank T desired Log today Log yesterday Log 2 days Log 4 days Output override P1 B1 M2 P4 P...

Page 85: ...Copy To System settings User settings Start copying Key overview System ECL version Code no Hardware Software Build no Serial no Production date Extension Ethernet Portal config M bus config Energy Meters Raw input overview Alarm Temp monitor Display 60058 Backlight 60059 Contrast Communication 38 Modbus addr 2048 ECL 485 addr 2150 Service pin 2151 Ext reset Language 2050 Language VI GU L2 02 Danf...

Page 86: ... limit Y1 11033 12033 Low T out X2 11034 12034 High limit Y2 11035 12035 Infl max 11036 12036 Infl min 11037 12037 Adapt time 11085 12085 Priority Optimization 11011 12011 Auto saving 11012 12012 Boost 12013 Ramp 11014 12014 Optimizer 11026 12026 Pre stop 11020 12020 Based on 11021 12021 Total stop 11179 12179 Cut out Control par 12174 Motor pr 12184 Xp 12185 Tn 12186 M run 12187 Nz 12189 Min act ...

Page 87: ...500 12500 13500 Send desired T 11022 12022 P exercise 12023 M exercise 12052 DHW priority 12076 Circ P frost T 11077 12077 P frost T 11078 12078 P heat T 11040 12040 P post run 11093 12093 13093 Frost pr T 11141 12141 13141 Ext input 11142 12142 13142 Ext mode Holiday Alarm Temp monitor 12147 Upper difference 12148 Lower difference 12149 Delay 12150 Lowest temp Alarm overview Anti bacteria Influen...

Page 88: ... Flow T Return T Tank T Input overview 3 Tank T Log 1 sensors Outdoor T Log today Room T Log yesterday Room T desired Log 2 days Boiler T desired Log 4 days Return T limit Log 2 sensors Outdoor T Log today Room T Log yesterday Flow T desired Log 2 days Return T limit Log 4 days Tank T desired Log 3 sensors Tank T desired Log today Log yesterday Log 2 days Log 4 days Output override P1 B1 B2 B3 B4 ...

Page 89: ...Copy To System settings User settings Start copying Key overview System ECL version Code no Hardware Software Build no Serial no Production date Extension Ethernet Portal config M bus config Energy Meters Raw input overview Alarm Temp monitor Display 60058 Backlight 60059 Contrast Communication 38 Modbus addr 2048 ECL 485 addr 2150 Service pin 2151 Ext reset Language 2050 Language VI GU L2 02 Danf...

Page 90: ... application One heating circuit and one domestic hot water DHW circuit The examples might differ from your application Example shows ECL 210 310 Heating circuit DHW circuit Some general settings which apply to the entire controller are located in a specific part of the controller To enter Common controller settings Action Purpose Examples Choose MENU in any circuit Confirm Choose the circuit sele...

Page 91: ...rview display 3 informs about date actual outdoor temperature controller mode time desired room temperature as well as shows the comfort schedule of the current day Overview display 4 informs about state of the controlled components actual flow temperature desired flow temperature controller mode return temperature limitation value influence on desired flow temperature Note An actual flow temperat...

Page 92: ...red DHW temperature 50 return temperature C limitation temperature 30 Overview display 1 Overview display 2 Example of overview display with Influence indication Setting the desired temperature Depending on the chosen circuit and mode it is possible to enter all daily settings directly from the overview displays see also the next page concerning symbols Setting the desired room temperature The des...

Page 93: ... desired and actual DHW temperature the today s schedule is visible The display example indicates that the controller is in scheduled operation and in comfort mode Setting the desired room temperature ECA 30 ECA 31 The desired room temperature can be set exactly as in the controller However other symbols can be present in the display please see What do the symbols mean With the ECA 30 ECA 31 you c...

Page 94: ... Description Alarm Letter Event Monitoring temperature sensor connection Display selector Max and min value Trend in outdoor temperature Wind speed sensor Sensor not connected or not used Sensor connection short circuited Fixed comfort day holiday Active influence Heating active Cooling active Additional symbols ECA 30 31 Symbol Description ECA Remote Control Unit 15 Connection address master 15 s...

Page 95: ...rs In the A275 applications the display will only show 1 boiler Heating circuit The overview display in the heating circuit ensures a quick overview of the actual and desired temperatures as well as the actual state of the system components Display example 49 C Flow temperature 31 Desired flow temperature 24 C Return temperature 50 Return temperature limitation DHW circuit The overview display in ...

Page 96: ...e in the common controller settings how to enter the common controller settings see Introduction to common controller settings As this overview see display example only states the measured actual temperatures it is read only 96 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 97: ...ected by one or more parameters it is indicated by a small line with arrow down arrow up or double arrow Arrow down The parameter in question reduces the desired flow temperature Arrow up The parameter in question increases the desired flow temperature Double arrow The parameter in question creates an override e g Holiday Straight line No active influence In the example the arrow in the symbol poi...

Page 98: ...the pump Confirm pump mode Choose motorized control valve Confirm Open the valve Stop opening the valve Close the valve Stop closing the valve Confirm valve mode To leave manual control use the mode selector to select the desired mode Push the dial Manual control is typically used when commisioning the installation The controlled components valve pump etc can be controlled for correct function Con...

Page 99: ...dule Action Purpose Examples Choose MENU in any of the overview displays Confirm Confirm the choice Schedule Choose the day to change Confirm Go to Start1 Confirm Adjust the time Confirm Go to Stop1 Start2 etc etc Return to MENU Confirm Choose Yes or No in Save Confirm Several days can be marked The chosen start and stop times will be valid for all the chosen days in this example Thursday and Satu...

Page 100: ...top 1x021 124 P exercise pump exercise 1x022 140 M exercise valve exercise 1x023 140 Actuator 1x024 136 Pre stop optimized stop time 1x026 125 Con T re T lim Constant temperature mode return temperature limitation 1x028 117 DHW ret T limit 1x029 117 High T out X1 return temp limitation high limit X axis 1x031 118 Low limit Y1 return temp limitation low limit Y axis 1x032 118 Low T out X2 return te...

Page 101: ... 151 Lower difference 1x148 151 Delay example 1x149 152 Lowest temp 1x150 152 Motor pr motor protection 1x174 136 Temp min 1x177 107 Temp max 1x178 107 Summer cut out limit for heating cut out 1x179 125 Infl max room temp limitation max 1x182 113 Infl min room temp limitation min 1x183 114 Xp proportional band 1x184 132 Xp proportional band 1x184 137 Tn integration time constant 1x185 132 Tn integ...

Page 102: ...rcuit s 1 2 3 Low X 1x607 133 Low X 1x607 149 High X 1x608 134 High X 1x608 149 Alarm high 1x614 150 Alarm low 1x615 150 Alarm time out 1x617 150 102 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 103: ...fferences between the order in this Operating Guide and the ECL Comfort 210 296 310 controllers Some parameter descriptions are related to specific application subtypes This means that you might not see the related parameter in the actual subtype in the ECL controller The note See Appendix refers to the Appendix at the end of this Operating Guide where parameter s setting ranges and factory settin...

Page 104: ...ed Change the value of the slope Push the dial to enter change the slope value of the heat curve example 1 0 When the slope of the heat curve is changed by means of the slope value the common point for all heat curves will be a desired flow boiler temperature 24 6 C at an outdoor temperature 20 C Change the coordinates Push the dial to enter change the coordinates of the heat curve example 30 75 T...

Page 105: ...al to enter change the slope value of the heat curve example 1 0 When the slope of the heat curve is changed by means of the slope value the common point for all heat curves will be a desired flow temperature 24 6 C at an outdoor temperature 20 C Change the coordinates Push the dial to enter change the coordinates of the heat curve example 30 75 The heat curve represents the desired flow temperatu...

Page 106: ...r example under the influence of the return temperature The desired DHW temperature is set in the overview display 50 3 Actual DHW temperature 50 Desired DHW temperature Actual DHW temp Desired DHW temp Parameters indicated with an ID no like 1x607 mean a universal parameter x stands for circuit parameter group 106 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A27...

Page 107: ...ure Temp min 1x177 See Appendix Parameter ID overview Set the min duct flow inlet temperature for the system The desired duct flow inlet temperature will not be lower than this setting Adjust the factory setting if required Temp min is overruled if Total stop is active in Saving mode or Cut out is active Temp min can be overruled by the influence from the return temperature limitation see Priority...

Page 108: ...ignal converted to desired flow temperature Push the dial to see the graph and enter the value sets for the input voltage 1 and 10 volt and displayed desired flow temperature Desired flow temperature 10 120 C Fixed voltage settings 1 V and 10 V Factory settings 1 10 and 10 100 This means that the Desired flow temperature is 10 C at 1 0 V and 100 C at 10 V Typically the higher the voltage the highe...

Page 109: ...erview Value Number of degrees to be added to the desired DHW temperature to obtain the DHW heating charging temperature X Time 1 Charging difference ID 1x193 2 Desired DHW temperature 3 Start difference ID 1x195 4 Actual DHW temperature 5 DHW heating charging activity The desired DHW temperature is related to the tank temperature sensor If two tank temperature sensors are installed the relation i...

Page 110: ...he stop is done when the upper DHW tank temperature sensor has a temperature 2 K higher than the start difference level See Appendix Parameter ID overview Value Set the number of degrees One DHW tank temperature sensor example with positive Stop difference value X Time 1 Stop difference ID 1x194 2 Desired DHW temperature 3 Actual DHW temperature 4 DHW heating charging activity One DHW tank tempera...

Page 111: ...nk temperature sensor 6 DHW heating charging activity Two DHW tank temperature sensors upper and lower Lower tank temperature is OK before upper tank temperature X Time 1 Start difference ID 1x195 2 Desired DHW temperature 3 Stop difference ID 1x194 4 Upper DHW tank temperature sensor 5 Lower DHW tank temperature sensor 6 DHW heating charging activity VI GU L2 02 Danfoss 2017 09 111 Operating Guid...

Page 112: ...egrees X Time 1 Charging difference ID 1x193 2 Desired DHW temperature 3 Start difference ID 1x195 4 Actual DHW temperature 5 DHW heating charging activity Example Desired DHW temp 55 C Start difference 3 K Result The DHW heating starts when the temperature measured by the tank temperature sensor upper is lower than 52 C 112 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 appli...

Page 113: ...ce etc If the room temperature is lower than the desired value the desired flow temperature can be increased The Infl min Influence min room temperature determines how much the desired flow temperature should be increased Use this influence type to avoid a too low room temperature This could e g be caused by windy surroundings A typical setting will be 4 0 for Infl max and 4 0 for Infl min Paramet...

Page 114: ...ature Result The desired flow temperature is changed by 2 x 4 0 x 1 8 14 4 degrees In application subtypes where a heat curve slope value is not present the heat curve slope value is set to 1 Result The desired flow temperature is changed by 2 x 4 0 x 1 8 0 degrees MENU Settings Room limit Infl min room temp limitation min 1x183 Determines how much the desired flow temperature will be influenced i...

Page 115: ...t 1x032 Y2 High limit 1x034 The calculated limit is shown in brackets in the monitoring display See the section Monitoring temperatures and system components DHW circuit The return temperature limitation is based on a constant temperature value The controller automatically changes the desired flow temperature to obtain an acceptable return temperature when the return temperature falls below or get...

Page 116: ... temperature gets higher than limit T Temperature Y Temperature X Time 1 Return temperature 2 Return temperature limit 3 Desired flow temperature 4 Action point 116 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 117: ...n temperature limitation 1x028 The Con T ret T limit is the return temperature limitation value when the circuit is set to override mode type Const T Constant temperature See Appendix Parameter ID overview Value Set the return temperature limitation Override mode When ECL Comfort is in Scheduled mode a contact switch signal can be applied to an input in order to override to Comfort Saving Frost Pr...

Page 118: ...plications with DHW tank heating charging are A217 A237 A247 A367 A377 MENU Settings Return limit High T out X1 return temp limitation high limit X axis 1x031 Set the outdoor temperature value for the low return temperature limitation See Appendix Parameter ID overview The corresponding Y coordinate is set in Low limit Y1 MENU Settings Return limit Low limit Y1 return temp limitation low limit Y a...

Page 119: ...d if the return temperature is lower than the calculated limit See Appendix Parameter ID overview Influence higher than 0 The desired flow temperature is increased when the return temperature gets below the calculated limit Influence lower than 0 The desired flow temperature is decreased when the return temperature gets below the calculated limit Example The return limit is active below 50 C The i...

Page 120: ... If you have a DHW application Please also see Parallel operation ID 11043 If you have a DHW application When dependent parallel operation is in function Desired flow temperature for the heating circuit will be minimum limited when Priority for return temperature ID 1x085 is set to OFF Desired flow temperature for the heating circuit will not be minimum limited when Priority for return temperature...

Page 121: ...er Total stop are all related to heating mode only Summer cut out determine at rising outdoor temperature the stop of heating Parameters indicated with an ID no like 1x607 mean a universal parameter x stands for circuit parameter group VI GU L2 02 Danfoss 2017 09 121 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 122: ... setting has no influence Comfort temperature The desired room temperature in Comfort mode Saving temperature The desired room temperature in Saving mode The desired room temperatures for Comfort and Saving modes are set in the display overviews X Outdoor temperature C Y Desired room temperature C 1 Desired room temperature C Comfort mode 2 Desired room temperature C Saving mode 3 Auto saving temp...

Page 123: ...1 is connected the boost stops when the room temperature is reached MENU Settings Optimization Ramp reference ramping 1x013 The time minutes in which the desired flow temperature increases gradually to avoid load peaks in the heat supply See Appendix Parameter ID overview OFF The ramping function is not active Value The desired flow temperature is increased gradually with the set minutes In order ...

Page 124: ... Radiator systems 4 medium 5 heavy Floor heating systems Table II Right digit Dimensioning temperature Capacity 0 50 C large 1 45 C 5 25 C normal 9 5 C small Dimensioning temperature The lowest outdoor temperature usually determined by your system designer in connection with the design of the heating system at which the heating system can maintain the designed room temperature Example The system t...

Page 125: ...T Total stop OFF Total stop ON X Time Y Desired flow temperature Comfort temperature Saving temperature Frost protection The min flow temperature limitation Temp min is overruled when Total stop is ON MENU Settings Optimization Pre stop optimized stop time 1x026 Disable the optimized stop time See Appendix Parameter ID overview OFF The optimized stop time is disabled ON The optimized stop time is ...

Page 126: ...ltered outdoor temperature become lower than the set limit This function can save energy Set the value for outdoor temperature at which you want the heating system to switch OFF Summer cut out X Time Y Temperature 1 Actual outdoor temperature 2 Cut out temperature 1x179 3 Accummulated filtered outdoor temperature 4 Heating enabled 5 Heating disabled The heating cut out is only active when the cont...

Page 127: ...ENU Settings Boiler Difference 1x046 The burner is switched ON and OFF to maintain the desired boiler temperature Set the difference between the cut in and cut out temperature See Appendix Parameter ID overview OFF Only in A275 applications The boiler temperature difference is set automatically according to the momentary load of the boiler and the temperature conditions in the heating system 1 50 ...

Page 128: ... ID no 11177 Temp min half the boiler temperature difference in ID no 11046 Difference The circulation pump will be switched OFF again if the actual flow boiler temperature is lower than the min desired flow boiler temperature set in ID no 11177 Temp min Example Temp min 45 C and Difference 8 K The circulation pump will be switched ON when the actual flow boiler temperature is higher than 45 0 5 x...

Page 129: ... ON time MENU Settings Boiler Min ON time 1x071 Set the minimum operation time minutes for the burner See Appendix Parameter ID overview 1 9 m The boiler can be protected against condensation corrosion caused by insufficient heat up time at each burner start The protection is obtained by a minimum operation time of the burner With this setting the boiler temperature difference ID no 11046 Differen...

Page 130: ...e after midnight However the changeover to the next main boiler is carried out at a natural cut out of a boiler see example The symbol ŋ in the sequence type examples indicates the number of burner steps in the system A375 1 B1 B4 are controlled by the ECL Comfort controller B5 B8 are controlled by ECA 32 A375 2 A375 3 B1 B2 are controlled by the ECL Comfort controller B3 B6 are controlled by ECA ...

Page 131: ...ner step cut in after a saving period The temperature difference between the desired and the actual boiler flow temperature is relatively large i e outside the band limit The lower illustration shows a typical situation for burner step cut out The temperature difference between the desired and the actual boiler flow temperature is relatively large i e outside the band limit If the Max T limit ID n...

Page 132: ... flow temperature is relatively close to the desired boiler flow temperature i e inside the band limit Temp Difference Desired boiler flow temp Band limit Actual boiler flow temp Time Temp Actual boiler flow temp Band limit Desired boiler flow temp Difference Time MENU Settings Boiler Xp proportional band 1x184 See Appendix Parameter ID overview Set the proportional band A higher value will result...

Page 133: ... zone the controller does not activate the motorized control valve See Appendix Parameter ID overview Set the acceptable flow duct temperature deviation Set the neutral zone to a high value if you can accept a high variation in flow temperature The neutral zone is symmetrical around the desired flow duct temperature value i e half the value is above and half the value is below this temperature MEN...

Page 134: ...endix Parameter ID overview X Volt Y Position 1 Low X MENU Settings Boiler High X 1x608 Definition of which voltage value corresponds to which position value The voltage as a 0 10 volt signal comes from a position measuring in M1 and is applied to input S11 ECA 32 This input voltage is converted to display a value for the position of M1 See also Position and Low X See Appendix Parameter ID overvie...

Page 135: ...ectronic outputs of the ECL Comfort controller in order to manage the control valve The signals are in the ECL Comfort controller expressed as Arrow up open and Arrow down close and displayed at the valve symbol When the flow temperature for example at S3 is lower than the desired flow temperature short open signals come from the ECL Comfort controller in order to gradually increase the flow By th...

Page 136: ...with the desired temperature Oppositely when the flow temperature is higher than the desired flow temperature relatively short open signals come from the ECL Comfort controller in order to reduce the flow Again the flow temperature aligns over time with the desired temperature The control of the Danfoss thermo actuator type ABV uses a unique designed algorithm and is based on the PWM principle Pul...

Page 137: ...t a high integration time constant in seconds to obtain a slow but stable reaction to deviations A low integration time constant will make the controller react fast but with less stability MENU Settings Control parameters M run running time of the motorized control valve 1x186 M run is the time in seconds it takes the controlled component to move from fully closed to fully open position See Append...

Page 138: ... symmetrical around the desired flow duct temperature value i e half the value is above and half the value is below this temperature MENU Settings Control parameters Min act time min activation time gear motor 1x189 The min pulse period of 20 ms milliseconds for activation of the gear motor See Appendix Parameter ID overview Setting example Value x 20 ms 2 40 ms 10 200 ms 50 1000 ms The setting sh...

Page 139: ...ical time period on the temperature recorder or use a stop watch Temp Critical time period Time This critical time period will be characteristic for the system and you can evaluate the settings from this critical period Tn 0 85 x critical time period Xp 2 2 x proportional band value in the critical time period If the regulation seems to be too slow you can decrease the proportional band value by 1...

Page 140: ...e in heating circuit 1 can be influenced by the demand for a desired flow temperature from another controller slave or another circuit See Appendix Parameter ID overview OFF The desired flow temperature in circuit 1 is not influenced by the demand of any other controller slave or circuit 2 Value The desired flow temperature is increased by the set value in Demand offset if the demand of the slave ...

Page 141: ...umber of minutes m after cooling stop Cooling stop is when the desired flow temperature gets higher than the setting in P cool T ID no 1x070 This P post run function can utilize the remaining energy in for example a heat exchanger See Appendix Parameter ID overview 0 The circulation pump stops immediately after heating or cooling stop Value The circulation pump is ON for the set time after heating...

Page 142: ...Choose whether the DHW heating control is based on a changeover valve or a pump See Appendix Parameter ID overview OFF Changeover valve ON Pump When the changeover valve is chosen pump P1 is ON at heating as well as at DHW heating demand When the pump is chosen pump P1 is ON at heating and OFF at DHW heating demand A parallel option heating and DHW heating in parallel exists based on the setting P...

Page 143: ... value at which the DHW circulation pump is to be active to protect the DHW circuit against frost See Appendix Parameter ID overview OFF The DHW circulation pump is not active Value The DHW circulation pump is active when the outdoor temperature is lower than the set value MENU Settings Application P frost T circulation pump frost protection temp 1x077 Frost protection based on the outdoor tempera...

Page 144: ...ump is not switched on MENU Settings Application Frost pr T frost protection temp 1x093 Set the desired flow temperature at temperature sensor S3 to protect the system against frost at heating cut out total stop etc When the temperature at S3 gets lower than the setting the motorized control valve opens gradually See Appendix Parameter ID overview The frost protection temperature can also be set i...

Page 145: ...view OFF No inputs have been selected for external override S1 S16 Input selected for external override If S1 S6 is chosen as override input the override switch must have gold plated contacts If S7 S16 is chosen as override input the override switch can be a standard contact See the drawings for connection examples of override switch and override relay to input S8 Example Connection of an override...

Page 146: ...controls a constant temperature See also Desired T 1x004 setting of desired flow temperature MENU Settings Flow temperature See also Con T ret T lim 1x028 setting of return temperature limitation MENU Settings Return limit The process diagrams show the functionality See also Ext input Example Override to Comfort mode 1 Override switch not activated activated 2 Function mode Schedule Comfort 3 Time...

Page 147: ...xample Override to Constant temperature mode 1 Override switch not activated activated 2 Function mode Schedule Const T 3 Time The Const T value can be influenced by temp max temp min room temp limit return temp limit flow power limit VI GU L2 02 Danfoss 2017 09 147 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 148: ... about the desired flow temperature is not sent to the master controller ON Information about the desired flow temperature is sent to the master controller In the master controller Demand offset must be set to a value in order to react on a desired flow temperature from a slave controller When the controller acts as a slave its address must be 1 2 3 9 in order to send the desired temperature to th...

Page 149: ...rms Actual flow temperature differs from the desired flow temperature Parameters indicated with an ID no like 1x607 mean a universal parameter x stands for circuit parameter group 5 10 1 S9 pressure MENU Settings Alarm Low X 1x607 Definition of which voltage value corresponds to which position value The voltage as a 0 10 volt signal comes from a position measuring in M1 and is applied to input S11...

Page 150: ...measured value gets higher than the set value the alarm will be activated See Appendix Parameter ID overview Value Set the alarm value MENU Settings Alarm Alarm low 1x615 When the measured value gets lower than the set value the alarm will be activated See Appendix Parameter ID overview Value Set the alarm value MENU Settings Alarm Alarm time out 1x617 The alarm is activated when the alarm reason ...

Page 151: ...ime Y Temperature 1 Upper difference 2 Desired flow temperature MENU Settings Alarm Lower difference 1x148 The alarm is activated if the actual flow duct temperature decreases more than the set difference acceptable temperature difference below the desired flow duct temperature See also Delay See Appendix Parameter ID overview OFF The related alarm function is not active Value The alarm function i...

Page 152: ...mains after the set delay Delay example X Time Y Temperature 1 Lower difference 2 Desired flow temperature 3 Actual flow temperature 4 Delay ID 1x149 MENU Settings Alarm Lowest temp 1x150 The alarm function will not be activated if the desired flow duct temperature is lower than the set value See Appendix Parameter ID overview If the cause of the alarm disappears the alarm indication and output al...

Page 153: ...ial Alarm overview Alarm sources are listed in this overview menu Some examples 2 Temp monitor 5 Pump 1 10 Digital S12 32 T sensor defect Related to the examples the numbers 2 5 and 10 are used in the alarm communication to the BMS SCADA system Related to the examples Temp monitor Pump 1 and Digital S12 are the alarm points Related to the examples 32 T sensor defect indicates the monitoring of con...

Page 154: ...Y Desired DHW temperature 1 Duration 2 Desired Anti bacteria temperature value 3 Desired Anti bacteria temperature 4 Desired DHW temperature value 5 Start time During the anti bacteria process the return temperature limitation is not active MENU Settings Anti bacteria Day Select mark the day s of the week where the anti bacteria function must be active M Monday T Tuesday W Wednesday T Thursday F F...

Page 155: ... bacteria function MENU Settings Anti bacteria Desired T Set the desired DHW temperature for the anti bacteria function See Appendix Parameter ID overview OFF The anti bacteria function is not active Value Desired DHW temperature during the anti bacteria function period VI GU L2 02 Danfoss 2017 09 155 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 156: ... specific part of the controller To enter Common controller settings Action Purpose Examples Choose MENU in any circuit Confirm Choose the circuit selector at the top right corner in the display Confirm Choose Common controller settings Confirm Circuit selector 156 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 157: ...ard How to set time and date Action Purpose Examples Choose MENU Confirm Choose the circuit selector at the top right corner in the display Confirm Choose Common controller settings Confirm Go to Time Date Confirm Place the cursor at the position to be changed Confirm Enter the desired value Confirm Move the cursor to the next position to be changed Continue until Time Date has been set Finally mo...

Page 158: ...liday schedule Action Purpose Examples Choose MENU Confirm Choose the circuit selector at the top right corner in the display Confirm Choose a circuit or Common controller settings Heating DHW Common controller settings Confirm Go to Holiday Confirm Choose a schedule Confirm Confirm choice of mode selector Choose mode Comfort Comfort 7 23 Saving Frost protection Confirm Enter the start time first ...

Page 159: ...As long as Saving is active in Common Controller circuit 1 will be in Saving The ECA 30 31 cannot override the holiday schedule of the controller temporarily However it is possible to make use of the following options from the ECA 30 31 when the controller is in scheduled mode Day off Holiday Relaxing extended comfort period Going out extended saving period Energy saving trick Use Going out the ex...

Page 160: ...om the displays in your application The input overview is located in the common controller settings This overview will always show you the actual temperatures in the system read only Outdoor acc T means Accummulated outdoor temperature and is a calculated value in the ECL Comfort controller 160 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 161: ...nnected sensors There is a log display for the relevant sensor showing the measured temperature The log function is only available in the Common controller settings Example 1 1 day log for yesterday showing the development in outdoor temperature during the past 24 hours Example 2 Today s log for the actual heating flow temperature as well as the desired temperature Example 3 Yesterday s log for th...

Page 162: ...oose a controlled component M1 P1 etc Confirm Adjust the status of the controlled component Motorized control valve AUTO STOP CLOSE OPEN Pump AUTO OFF ON Confirm status change Remember to change the status back again as soon as an override is not required any longer Controlled components Circuit selector Manual control has higher priority than Output override When the selected controlled component...

Page 163: ...r settings are among others desired room temperature desired DHW temperature schedules heat curve limitation values etc Go to factory Restores the factory settings Copy To Copy direction System settings User settings Start copying Key overview Gives an overview over the inserted ECL key Example A266 Ver 2 30 Turn the dial to see the subtypes Push the dial again to exit the overview A more detailed...

Page 164: ...s settings can be changed ECL Comfort 210 310 controller versions 1 36 and up Take out the application key for 20 minutes settings can be changed Power up the controller without the application key inserted settings cannot be changed ECL Comfort 296 controller versions 1 58 and up Take out the application key for 20 minutes settings can be changed Power up the controller without the application ke...

Page 165: ...dules if any An example could be the ECA 32 module 6 8 3 Ethernet ECL Comfort 296 310 310B have a Modbus TCP communication interface that allows the ECL controller to be connected to an Ethernet network This allows remote access to the ECL 296 310 310B controller based on standard communication infrastructures In Ethernet it is possible to set up the required IP addresses 6 8 4 Portal config ECL C...

Page 166: ...oss recommends AC supplied energy meters in order to avoid battery draining Energy meter data acquisition from ECL Portal is possible without setting up the M bus configuration MENU Common controller System M bus config State Read out Circuit Setting range Factory setting Information about the current M bus activity IDLE Normal state INIT The command for initialization has been activated SCAN The ...

Page 167: ...ystem M bus config M bus address Energy meter 1 2 3 4 5 6000 Circuit Setting range Factory setting 0 255 255 The set or verified address of energy meter 1 2 3 4 5 0 Normally not used 1 250 Valid M bus addresses 251 254 Special functions Use only M bus address 254 when one energy meter is connected 255 Not used MENU Common controller System M bus config Type Energy meter 1 2 3 4 5 6001 Circuit Sett...

Page 168: ...overview Measured temperatures input status and voltages are displayed In addition a detection of malfunctions can be chosen for activated temperature inputs Monitoring the sensors Choose the sensor which measures a temperature for example the S5 When the dial is pressed a magnifying glass appears in the selected line The S5 temperature is now being monitored Alarm indication Should the connection...

Page 169: ...reased Negative offset value The temperature value is decreased 6 8 9 Display Backlight display brightness 60058 Circuit Setting range Factory setting 0 10 5 Adjust the brightness of the display 0 Weak backlight 10 Strong backlight Contrast display contrast 60059 Circuit Setting range Factory setting 0 10 3 Adjust the contrast of the display 0 Low contrast 10 High contrast 6 8 10 Communication Mod...

Page 170: ...th its own address 1 9 However more slaves can have the address 0 if they only have to receive information about outdoor temperature and system time listeners The total cable length of max 200 m all devices incl the internal ECL 485 communication bus should not be exceeded Cable lengths of more than 200 m may cause noise sensibility EMC In a system with MASTER SLAVE controllers only one MASTER con...

Page 171: ...uage Local language is selected during installation If you want to change to another local language the application must be reinstalled However it is always possible to change between the local language and English VI GU L2 02 Danfoss 2017 09 171 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 172: ...ller the remote control unit ECA 30 31 will after approx one minute ask to Copy application Confirm this in order to upload the application to the ECA 30 31 Menu structure The menu structure of ECA 30 31 is an ECA MENU and the ECL menu copied from the ECL Comfort controller The ECA MENU contains ECA settings ECA system ECA factory ECA settings Offset adjustment of the measured room temperature Off...

Page 173: ...ation in the ECL controller does not comply with the ECA 30 31 In the example 1 10 is current version and 1 42 is desired version Display part of ECA 30 31 This display indicates that an application has not been uploaded or the communication to the ECL controller master is not working properly An X on the ECL controller symbol indicates wrong setup of communication addresses Display part of ECA 30...

Page 174: ...emperature 23 4 C ECA MENU ECA settings ECA sensor RH offset ECA 31 only Setting range Factory setting 10 0 10 0 0 0 The measured relative humidity can be corrected with a number of values The corrected value is used by the application in the ECL controller Minus value The indicated relative humidity is lower 0 0 No correction of the measured relative humidity Plus value The indicated relative hum...

Page 175: ...nu shows date and room temperature and for ECA 31 relative humidity ECA MENU ECA system ECA communication Slave addr Slave address Setting range Factory setting A B A The setting of Slave addr is related to the setting ECA address in the ECL controller In the ECL controller it is selected from which ECA 30 31 unit the room temperature signal is received A The ECA 30 31 has the address A B The ECA ...

Page 176: ...d dial cannot be assigned to the address 0 zero ECA MENU ECA system ECA override Override addr Override address Setting range Factory setting OFF 1 9 15 OFF The feature Override to extended comfort or saving period or holiday must be addressed to the ECL controller in question OFF Override not possible 1 9 Address of slave controller for override 15 Address of master controller for override Extend...

Page 177: ...mple 2 Several ECL controllers and one ECA 30 31 Override of heating circuit 1 in ECL controller with the address 6 Set Connection addr to 6 Set Override circuit to 1 Quick guide ECA 30 31 to override mode 1 Go to ECA MENU 2 Move cursor to Clock symbol 3 Select the Clock symbol 4 Choose and select one of 4 override functions 5 Below the override symbol Set hours or date 6 Below hours date Set desi...

Page 178: ...ereafter the application is uploaded from the ECL controller An upload bar is shown ECA MENU ECA factory ECA default Restore factory The ECA 30 31 is set back to factory settings Affected settings by the restore procedure Room T offset RH offset ECA 31 Backlight Contrast Use as remote Slave addr Connection addr Override addr Override circuit Override mode Override mode end time NO The restore proc...

Page 179: ... controller ECA MENU ECA factory Update firmware Update firmware The ECA 30 31 can be updated with new firmware software The firmware comes with the ECL application key when the key version is at least 2 xx If no new firmware is available a symbol of the application key is displayed with an X NO The updating procedure is not done YES The updating procedure is done The ECA 30 31 automatically verif...

Page 180: ...on Comfort is also called normal heating temperature Saving can be reduced heating or heating stopped Constant temperature is a desired flow temperature set in the menu Flow temperature Frost protection stops the heating totally Override by means of override switch or relay contact is possible when the ECL 210 296 310 is in scheduled mode clock Example override switch connected to S8 Example overr...

Page 181: ...ctivated activated 2 Function mode Schedule Comfort 3 Time Example 2 ECL in Comfort mode but in Saving mode at override Choose an unused input for example S8 Connect the override switch or override relay contact Settings in ECL 1 Select circuit MENU Settings Application Ext input Select the input S8 the wiring example 2 Select circuit MENU Settings Application Ext mode Select SAVING 3 Select circu...

Page 182: ...k schedule for the building is set with comfort periods all weekdays 06 00 20 00 Sometimes the desired flow temperature must be constant on 65 C An override relay is installed and the flow temperature must be 65 C as long as the override relay is activated Choose an unused input for example S8 Connect the contacts of the override relay Settings in ECL 1 Select circuit MENU Settings Application Ext...

Page 183: ...ECL 485 bus is calculated like this Subtract Total length of all input cables of all ECL controllers in the master slave system from 200 m Simple example for total length of all input cables 3 x ECL 1 x ECL Outdoor temp sensor 15 m 3 x ECL Flow temp sensor 18 m 3 x ECL Return temp sensor 18 m 3 x ECL Room temp sensor 30 m Total 81 m Maximum recommended length of the ECL 485 bus 200 81 m 119 m In a...

Page 184: ...stem This status is broadcasted to all ECL controllers in the system and each heating circuit can be set to close the heating SLAVE controller Set the desired function In circuit 1 circuit 2 go to Settings Application DHW priority DHW priority closed valve normal operation 11052 12052 Circuit Setting range Choose 1 2 OFF ON OFF ON OFF The flow temperature control remains unchanged during active DH...

Page 185: ... addr master slave address 2048 Circuit Setting range Choose 0 15 1 9 Furthermore each slave can send information about the desired flow temperature demand in each circuit back to the master controller SLAVE controller In the circuit in question go to Settings Application Send desired T Choose ON or OFF Send desired T 11500 12500 Circuit Setting range Choose 1 2 OFF ON ON or OFF OFF Information ab...

Page 186: ...is too low Make sure that the radiator thermostat does not limit the room temperature If you still cannot obtain the desired room temperature by adjusting the radiator thermostats the flow temperature is too low Increase the desired room temperature display with desired room temperature If this does not help adjust the Heat curve Flow temp The room temperature is too high during saving periods Mak...

Page 187: ...flow temperature proportional to the difference between a desired and an actual temperature e g a room temperature A P control will always have an offset which not will disappear over time PI control Proportional and Integrating control A PI control does the same as a P control but the offset will disappear over time A long Tn will give a slow but stable control and a short Tn will result in a fas...

Page 188: ... these two values Example Desired flow temperature 60 C at outdoor temperature 10 C Result Heat curve slope value 1 2 mid way between 1 4 and 1 0 In general Smaller radiators in your heating system might require a higher heat curve slope Example Desired flow temperature 70 C resulting in heat curve 1 5 Floor heating systems require a lower heat curve slope Example Desired flow temperature 35 C res...

Page 189: ...al temperature in the system controlled by the schedule During heating the flow temperature in the system is higher to maintain the desired room temperature During cooling the flow temperature in the system is lower to maintain the desired room temperature Comfort temperature Temperature maintained in the circuits during comfort periods Normally during daytime Compensation temperature A measured t...

Page 190: ...ng Holiday schedule Selected days can be programmed to be in comfort saving or frost protection mode Besides this a day schedule with comfort period from 07 00 to 23 00 can be selected Humidistat A device which reacts on the air s humidity A switch can go ON if the measured humidity gets above a set point Humidity relative This value stated in refers to the indoor moisture content compared to the ...

Page 191: ...mperature measured by the room temperature sensor or the Remote Control Unit The room temperature can only be controlled directly if a sensor is installed The room temperature influences the desired flow temperature Room temperature sensor Temperature sensor placed in the room reference room typically the living room where the temperature is to be controlled Saving temperature Temperature maintain...

Page 192: ...MWh 0 1 kWh 0 1 MWh Tariff1 Acc Energy 0 1 kWh 0 1 MWh Tariff2 Acc Energy 0 1 kWh 0 1 MWh Up time days Current time M bus defined structure Error status energy meter defined bitmask Acc Volume 0 1 m3 Acc Energy 0 1 kWh Acc Volume2 0 1 m3 Acc Energy2 0 1 kWh Acc Volume3 0 1 m3 Acc Energy3 0 1 kWh Acc Volume4 0 1 m3 Acc Energy4 0 1 kWh 192 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 ...

Page 193: ... 1 2 3 4 5 60 20 15 C 118 11032 Low limit Y1 1 2 3 1 2 3 4 5 10 150 35 C 118 11033 Low T out X2 1 2 3 1 2 3 4 5 60 20 15 C 118 11034 High limit Y2 1 2 3 1 2 3 4 5 10 150 35 C 118 11035 Infl max 1 2 3 1 2 3 4 5 9 9 9 9 0 0 119 11036 Infl min 1 2 3 1 2 3 4 5 9 9 9 9 0 0 119 11037 Adapt time 1 2 3 1 2 3 4 5 OFF 1 50 25 Sec 119 11038 Stop at T out 1 2 3 1 2 3 49 49 OFF OFF C 127 11040 P post run 1 2 3...

Page 194: ...179 Summer cut out 1 2 3 1 2 3 4 5 OFF 1 50 20 C 125 11182 Infl max 1 2 3 1 2 3 4 5 9 9 0 0 4 0 113 11183 Infl min 1 2 3 1 2 3 4 5 0 0 9 9 0 0 114 11184 Xp 4 5 5 250 120 K 11185 Tn 4 5 1 999 50 Sec 11186 M run 4 5 5 250 60 Sec 11187 Nz 4 5 1 9 3 K 11189 Min act time 4 5 2 50 10 11364 Control delay 4 5 0 15 2 Min 133 11424 Min off time 4 5 0 30 1 Min 133 11500 Send desired T 1 2 3 1 2 3 4 5 OFF ON ...

Page 195: ... 12036 Infl min 3 3 5 9 9 9 9 0 0 119 12037 Adapt time 3 3 5 OFF 1 50 25 Sec 119 12040 P post run 3 3 5 0 99 3 Min 141 12041 DHW P post run 2 2 0 30 0 Min 141 12051 Ch o valve P 2 2 OFF ON ON 142 12052 DHW priority 3 3 5 OFF ON OFF 142 12053 Tank sec prim 2 2 OFF ON OFF 142 12055 Circ P priority 2 OFF ON OFF 143 12076 Circ P frost T 2 OFF 10 20 2 C 143 12077 P frost T 3 3 5 OFF 10 20 2 C 143 12078...

Page 196: ... 0 0 4 0 113 12183 Infl min 3 3 5 0 0 9 9 0 0 114 12184 Xp 3 3 5 5 250 80 K 12185 Tn 3 3 5 1 999 30 Sec 12186 M run 3 3 5 5 250 50 Sec 12187 Nz 3 3 5 1 9 3 K 12189 Min act time 3 3 5 2 50 10 12193 Charge difference 2 2 1 50 15 K 109 12194 Stop difference 2 2 50 50 3 K 109 12195 Start difference 2 2 50 1 3 K 111 12500 Send desired T 2 3 2 3 5 OFF ON ON 147 13041 DHW P post run 3 1 3 5 0 30 0 Min 14...

Page 197: ...ence 3 3 5 1 50 15 K 109 13194 Stop difference 3 3 5 50 50 3 K 109 13195 Start difference 3 3 5 50 1 3 K 111 13500 Send desired T 3 3 5 OFF ON ON 147 13607 Low X 4 5 0 0 10 0 2 0 V 13608 High X 4 5 0 0 10 0 10 0 V 13609 Low Y 4 5 0 0 15 0 0 0 Bar 13610 High Y 4 5 0 0 15 0 20 0 Bar 13614 Alarm high 4 5 0 0 15 0 2 3 Bar 150 13615 Alarm low 4 5 0 0 15 0 0 0 Bar 150 13617 Alarm time out 4 5 0 240 30 S...

Page 198: ...Installer By Date 198 Danfoss 2017 09 VI GU L2 02 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

Page 199: ... 087H9092 VIGUL202 VI GU L2 02 2017 09 Danfoss 199 Operating Guide ECL Comfort 210 296 310 application A275 A375 ...

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