Siemens VALVEGYR LDU11.323A17 User Manual Download Page 1 | Manualshive

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CC1N7696en
20.04.2016

Building Technologies Division

7

696

VALVEGYR®

Valve Proving System for
automatic Shutoff Valves

LDU11...

The LDU11... valve proving system

is designed for use with shutoff valves in con-

nection with gas burners and gas appliances. In the event of inadmissible leakage,
the system prevents the burner from starting up.
The LDU11... system conforms to the requirements of EN1643 covering automatic
shutoff valves for use with gas burners and gas appliances to EN161.

The LDU11... and this Data Sheet are intended for use by OEMs which integrate the
valve proving system in their products.

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Summary of Contents for VALVEGYR LDU11.323A17

Page 1: ...in con nection with gas burners and gas appliances In the event of inadmissible leakage the system prevents the burner from starting up The LDU11 system conforms to the requirements of EN1643 covering automatic shutoff valves for use with gas burners and gas appliances to EN161 The LDU11 and this Data Sheet are intended for use by OEMs which integrate the valve proving system in their products ...

Page 2: ... indicate the fault Remote indication of the fault is also possible A program indicator which stops whenever a fault occurs indicates which of the valves is leaking The LDU11 can be reset either on the unit itself or via an electric remote reset facility Warning notes To avoid injury to persons damage to property or the environment the following warning notes must be observed Do not open interfere...

Page 3: ...dherence to the following standards regulations Safety and control devices for gas burners and gas burning ap pliances Valve proving systems for automatic shut off valves DIN EN 1643 The relevant valid edition of the standards can be found in the declaration of con formity Note on DIN EN 60335 2 102 Household and similar electrical appliances Safety Part 2 102 Particular requirements for gas oil a...

Page 4: ...s published by the European Association of Component Manufacturers Afecor www afecor org The designed lifetime is based on use of the LDU11 according to the manufacturer s Data Sheet After reaching the designed lifetime in terms of the number of burner startup cycles or the respective time of usage the LDU11 is to be replaced by authorized personnel The designed lifetime is not the warranty time s...

Page 5: ...ote location and provides the Lockout and Reset functions Unit fuse and spare fuse All electrical components are interconnected via printed circuits Type summary Type reference Mains voltage t3 t4 LDU11 323A17 AC 100 110 V 2 5 s 2 5 s LDU11 323A27 AC 220 240 V 2 5 s 2 5 s LDU11 523A17 AC 100 110 V 5 s 5 s LDU11 523A27 AC 220 240 V 5 s 5 s t3 Filling the test space t4 Evacuating the test space Valv...

Page 6: ...ing except the connection area terminal base Safety class I Perm input current at terminal 1 Max 5 A peak current 20 A 20 ms Perm current rating of control terminals Max 4 A peak current 20 A 20 ms Required current rating of pressure switch DW Min 1 A AC 250 V Storage DIN EN 60721 3 1 Climatic conditions Class 1K3 Mechanical conditions Class 1M2 Temperature range 20 60 C Humidity 95 r h Transport ...

Page 7: ... switch if the atmospheric pressure in the test space is maintained If the valve on the mains side is leaking causing the pres sure to rise above the switching point of the pressure switch the LDU11 will trigger an alarm and initiate lockout The program indicator then stops to indicate Test1 If the pressure does not increase because the valve closes correctly the LDU11 con tinues its program with ...

Page 8: ... valve proving test on the burner side I I I Idle steps until programming mechanism switches itself off Operating position start position for the next valve proving test In the event of lockout all terminals receiving voltage from the valve proving system LDU11 will be deenergized except terminal 13 which is used for lockout indication After a reset the programming mechanism automatically returns ...

Page 9: ... in mbar Absolute pressure 1 013 mbar normal pressure V in dm Volume of test space confined by the valves to be tested includ ing the space in the valves themselves Ttest in s Duration of proving time PG 30 mbar QLeck 30 15 x 10 36 x 3600 1013 x 27 5 20 l h PW 15 mbar Patm V 1013 mbar 10 36 dm Any valve leakage rate exceeding 20 l h causes the LDU11 to initiate lockout tTest 27 5 s Note Select vol...

Page 10: ...ve AR Working relay with contacts ar AS Unit fuse built in BR Lockout relay with contacts br DW Pressure switch for valve proving test does not replace the gas pressure switch used to signal lack of gas EK1 Lockout reset button EK2 Remote lockout reset button GP Gas pressure switch for lack of gas HR Auxiliary relay with contacts hr L1 Lockout warning lamp built in Si External primary fuse SK Cont...

Page 11: ...as pressure For LDU11 323 t3 2 5 s Filling the test space t4 2 5 s Evacuating the test space For LDU11 523 t3 5 s Filling the test space t4 5 s Evacuating the test space t5 66 3 s Total duration of valve proving test until burner is released t6 7 4 s Interval from start to energizing working relay AR t20 22 1 s Running time of programming mechanism until it switches itself off in the operating sta...

Page 12: ...th vent pipe to atmosphere GP E C B DW LDU A A2 A1 C DW LDU B GP E 7696s01 0695 Connection examples with vent pipe to atmosphere using burner controls type LFE LFL or LGK or the control unit LEC Check during the prepurge time min 60 seconds and following immediately the controlled shutdown in plants with vent pipe to atmosphere Delay on make of relay d 2 seconds 2 Expanding flame burner or interru...

Page 13: ... 5 12 13 LFE1 LEC1 LFL1 LGK16 R 11 20 19 12 hr1 XI 23 N 9 10 V 7 8 I 2 5 10 18 17 A AL 22 13 24 21 N 7696a08 0401 DW 2 2 Valve proving test with 2 pressure switches DWG Pressure switch for the valve proving test with gas pressure This pressure switch must be set to the minimum gas pressure permitted during the proving test If this pressure is not reached during the test lockout will be initiated D...

Page 14: ...6 DW 2 2 Valve proving test with 2 pressure switches DWG Pressure switch for the valve proving test with gas pressure This pressure switch must be set to the mini mum gas pressure permitted during the proving test If this pressure is not reached during the test lockout will be initiated DWA Pressure switch for the gas valve proving test with atmospheric pressure This pressure switch must be set to...

Page 15: ... immediately the controlled shutdown N LDU11 hr2 22 A1 GP E B N DW 15 1 3 4 ar2 17 16 SB R W 2 5 6 III LGB2 3 4 LMG2 12 L H 9 23 11 20 10 hr1 V XI 12 14 19 5 3 M A2 4 AL 13 24 21 N 10 7696a13 0403 LDU11 hr2 22 E N B A1 15 ar2 17 16 III 2 14 DW P GP L H 6 5 4 3 1 12 LGB2 3 4 LMG2 N hr1 11 9 7 20 23 19 10 8 12 I V XI A2 5 3 M N AL 13 N 24 21 4 SB R W 7696a14 0703 N AGK253 Only in connection with LMG...

Page 16: ...8 I 2 9 10 V 4 5 10 18 17 AL 22 13 24 21 N 7696a25 0401 DW 2 2 Valve proving test with 2 pressure switches DWG Pressure switch for the valve proving test with gas pressure This pressure switch must be set to the mini mum gas pressure permitted during the proving test If this pressure is not reached during the test lockout will be initiated DWA Pressure switch for the gas valve proving test with at...

Page 17: ...8 19 4 9 12 13 LFE1 LEC1 LFL1 LGK16 R 4 5 hr2 11 20 19 hr1 XI 23 12 7 8 I 9 10 V M 5 18 AL 13 24 21 N 22 N 6 7 3 17 7696a27 0401 Valve proving test with 2 pressure switches DWG Pressure switch for the valve proving test with gas pressure This pressure switch must be set to the mini mum gas pressure permitted during the proving test If this pressure is not reached during the test lockout will be in...

Page 18: ...switched on with connection of terminal 3 after controller ON or after lockout If the LDU11 initiates lockout valve proving can take up to 160 seconds There fore the maximum permissible response time of the air pressure switch is 180 se conds With the LDU11 faults during valve proving lead to lockout and with the LME22 xxxC LME22 xxxC to lockout due to air pressure switch timeout blink code 03 Not...

Page 19: ... is switched on with connection of ter minal 3 after controller ON or after lockout If the LDU11 initiates lockout valve proving can take up to 160 seconds Therefore the maximum permissible response time of the air pressure switch is 180 seconds With the LDU11 faults during valve proving lead to lockout and with the LME22 xxxC LME22 xxxC to lockout due to air pressure switch timeout blink code 03 ...

Page 20: ...auxiliary relay LP Air pressure switch M Fan M2 pre and postpurging NT Power supply PL Reference pressure for SKP7 R Control thermostat or pressurestat e g boiler control thermostat RB Pipe orifice its diameter must be determined such that in the event of a leaking ignition gas valve A the ignition flame cannot afterburn on com pletion of the second safety time so that presence of the main flame c...

Page 21: ...on CC1N7696en 20 04 2016 Dimensions Dimensions in mm 1 5 108 5 27 5 27 5 37 7 5 103 103 7696m04 0305 123 LDU11 2016 Siemens AG Building Technologies Division Berliner Ring 23 D 76437 Rastatt Subject to change Plug in base AGM11 AGM11 1 ...

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