Valve Proving System for automatic Shutoff Valves

Transcription

1 LGY lve Proving System for utomtic Shutoff lves The vlve proving system is designed for use with shutoff vlves in connection with gs urners nd gs pplinces. n the event of indmissile lekge, the system prevents the urner from strting up. The system conforms to the requirements of 3 covering utomtic shutoff vlves for use with gs urners nd gs pplinces to 1. The nd this Dt Sheet re intended for use y OMs which integrte the vlve proving system in their products. en uilding Technologies H Products

2 Use The is designed for utomtic gs vlve proving (lekge test) sed on the pressure proving principle. t is for use on gs-fired comustion plnt with or without vent pipe to tmosphere. n the cse of plnts with no vent pipe where stndrds pply, the notes given in «onnection exmples without vent pipe to tmosphere» must e oserved. Used in connection with 1 or 2 commercilly ville pressure switches, vlve proving is utomticlly initited with every urner strtup, either - prior to urner strtup - during the prepurge time if it lsts minimum of 0 seconds - immeditely fter controlled shutdown, or - on completion of the urner control s control sequence, e.g. t the end of the postpurge time The vlve proving test is sed on the 2-stge pressure proving principle: 1. First test phse: The vlve on the mins side is tested y evcuting the test spce nd y monitoring the tmospheric pressure in it. 2. Second test phse: The vlve on the urner side is checked y pressurizing the test spce nd y monitoring the gs pressure. f the pressure increses excessively during the first test phse clled «Test1», or decreses excessively during the second test phse clled «Test2», the vlve proving system will inhiit urner strtup nd initite lockout. n tht cse, the lockout reset utton will light up to indicte the fult. emote indiction of the fult is lso possile. progrm indictor, which stops whenever fult occurs, indictes which of the vlves is leking. The vlve proving system cn e reset either on the unit itself or vi n electric remote reset fcility. rning notes To void injury to persons, dmge to property or the environment, the following wrning notes should e oserved. Do not open, interfere with or modify the control unit. Mounting notes ll ctivities (mounting, instlltion nd service work, etc.) must e crried out y qulified stff efore performing ny wiring chnges in the connection re of the 11..., completely isolte the unit from the mins supply (ll-polr disconnection) nsure protection ginst electric shock hzrd y providing dequte protection for the vlve proving system s connection terminls nsure tht wiring is in n orderly stte Press the lockout reset utton only mnully (pplying force of no more thn ) without using ny tools or pointed ojects Do not press the lockout reset utton on the unit for more thn seconds since longer presses will destroy the lockout rely Fll or shock cn dversely ffect the sfety functions. Do not put such units into opertion, even if they do not exhiit ny dmge nsure tht the relevnt ntionl sfety regultions re complied with 2/ uilding Technologies en H Products

3 nstlltion notes Live nd neutrl conductors must not e interchnged ommissioning notes Prior to commissioning, ensure tht wiring is in n orderly stte Stndrds nd certifictes onformity to directives - lectromgnetic comptiility M (immunity) - Directive for gs pplinces / 33 0 / 3 SO 001: 2000 ert. 003 SO 01: 1 ert ertified complete with plug-in se: Type reference x x x --- x x --- x --- x x --- x x x x x Service notes ch time unit hs een replced, ensure tht wiring is in n orderly stte Disposl notes The unit contins electric nd electronic components nd must not e disposed of together with domestic wste. Locl nd currently vlid legisltion must e complied with. 3/ uilding Technologies en H Products

4 Mechnicl design lve proving system Housing - Plug-in design - xchngele unit fuse (including spre fuse) - Mde of impct-proof nd het-resistnt lck plstic - Lockout reset utton with viewing window showing: The fult signl lmp The lockout indiction - oupled to the progrm spindle - ith trnsprent lockout reset utton - sy-to-rememer symols indicting the type of fult nd the time lockout occurred - Synchronous motor of the sequence switch with ger trin nd step ction sequence switch - mshft with 1 nondjustle cms - Progrm indictor t the hed of the cmshft - 1 min nd 1 uxiliry rely - Lockout rely cn e electriclly reset from remote loction nd provides the «Lockout» nd «eset» functions - Unit fuse nd spre fuse ll electricl components re interconnected vi printed circuits. Type summry Type reference Mins voltge t3 t s 2. s s 2. s ¹) s s ¹) s s Legend t3 t Filling the test spce vcuting the test spce ¹) lve opening times do not conform to 3 Ordering lve proving system (without plug-in se) refer to «Type summry» Plug-in se not included in the delivery, must e ordered s seprte item! onnection ccessories for medium-cpcity refer to Dt Sheet 230 urner controls - Plug-in se GM11 with Pg11 threds for cle entry glnds - Plug-in se GM11.1 with M threds for cle entry glnds PT resistor ( 230 ) - For lod on terminl of LMG2... GK2 / uilding Technologies en H Products

5 Technicl dt Generl unit dt nvironmentl conditions Mins voltge ¹) ¹) % % 0 1 % % % % 0 1 % % ¹) lve opening times do not conform to 3 Mins frequency Hz ± % Unit fuse (uilt-in) T.3H20 to D 0 12 Primry fuse (externl) mx. (slow) eight pprox. 00 g Power consumption - During the test pprox During opertion pprox. 2. Mounting position Optionl Degree of protection P 0 (to e ensured through mounting), except the connection re (terminl se) Sfety clss Perm. input current t terminl 1 mx. (pek current 20 / 20 ms) Perm. current rting of control terminls mx. (pek current 20 / 20 ms) equired current rting of pressure switch min. 1, 20 Storge D limtic conditions clss 1K3 Mechnicl conditions clss 1M2 Temperture rnge Humidity < % r.h. Trnsport D limtic conditions clss 2K2 Mechnicl conditions clss 2M2 Temperture rnge Humidity < % r.h. Opertion D limtic conditions clss 3K Mechnicl conditions clss 3M2 Temperture rnge Humidity < % r.h. ondenstion, formtion of ice nd ingress of wter re not permitted! / uilding Technologies en H Products

6 Function During the first phse of the vlve proving test clled «Test1», tmospheric pressure must exist in the length of pipe etween the vlves to e tested. n plnts with vent pipe to tmosphere, tmospheric pressure is ville if the vlve proving test is mde prior to or during the prepurge time. n plnts without vent pipe, tmospheric pressure is mde ville s the vlve proving system opens the vlve on the urner side during the time «t». f the vlve proving test is performed fter urner opertion, the vlve on the urner side fter the controlled shutdown cn e kept open until «t» hs elpsed, thus lowering the pressure in the test spce nd mking certin its gs content is urnt off in the comustion chmer during the postpurge time. Prerequisite for this procedure is suitle control progrm of the urner control s provided y urner controls type LF..., LFL..., LGK... or L... The test spce is closed off fter evcution. During the first test phse «Test1», which then follows, the checks with the pressure switch if the tmospheric pressure in the test spce is mintined. f the vlve on the mins side is leking, cusing the pressure to rise ove the switching point of the pressure switch, the will trigger n lrm nd initite lockout. The progrm indictor then stops to indicte «Test1». f the pressure does not increse ecuse the vlve closes correctly, the continues its progrm with the second test phse «Test2». For tht purpose, the vlve on the mins side is opened during «t3» so tht the test spce is pressurized («filling» the test spce). During the second test phse if the vlve on the urner side is leking this pressure must not fll elow the switching point of the pressure switch. f it does, the will initite lockout lso, thus preventing the urner from strting up. On successful completion of the second test phse, the closes the internl control loop etween terminls 3 nd (circuit pth: terminl 3 - contct «r2» - terminls nd - contct - terminl ). This control loop is normlly included in the urner control s strt control loop. fter the control loop hs een closed, the progrmming mechnism of the returns to its strt position to switch itself off. During these so-clled idle steps, the positions of the progrmming mechnism s control contcts remin unchnged. / uilding Technologies en H Products

7 Progrm nd lockout indictor n the event of lockout, the progrmming mechnism stops nd thus the position indictor fitted to the spindle of the mechnism. The symol tht stops ove the reding mrk indictes the test phse during which lockout occurred nd lso gives the numer of progrmming steps completed from the strt of this test phse (1 step = 2. seconds). Mening of the symols: Strt position = operting position n plnts without vent vlve: vcution of test spce y opening the vlve on the urner side Test1 «Test1» with tmospheric pressure (vlve proving test on the mins side) Filling the test spce y opening the vlve on the mins side Test2 «Test2» with gs pressure (vlve proving test on the urner side) dle steps until progrmming mechnism switches itself off Operting position = strt position for the next vlve proving test n the event of lockout, ll terminls receiving voltge from the will e deenergized, except terminl 13, which is used for lockout indiction. fter reset, the progrmming mechnism utomticlly returns to its strt position to immeditely progrm new vlve proving test. ote ontrol sequence fter power filure Do not press the reset utton for more thn seconds. power filure prior to evcuting the test spce does not cuse the control sequence to chnge. f power filure occurs fter the evcution, the vlve proving test will not e continued when power is restored, ut the progrmming mechnism first returns to its strt position nd then performs the complete vlve proving test. / uilding Technologies en H Products

8 lcultion of the lekge rte escping from length of pipe (PG - P) x x 300 QLeck = Ptm x ttest Legend Qleck in dm³ / h Permissile lekge rte in dm³ or liters per hour PG in mr Overpressure in pipe section etween the vlves to e tested, t the eginning of the test phse P in mr Overpressure set on pressure switch (normlly set to 0 % of the gs mins pressure) Ptm in mr solute pressure (1.013 mr norml pressure) in dm³ olume of test spce confined y the vlves to e tested, including the spce in the vlves themselves Ttest in s Durtion of proving time xmple PG P = 30 mr = 1 mr QLeck = (30-1) x.3 x x 2. = 20 l/h Ptm = 13 mr =.3 dm³ ny vlve lekge rte exceeding 20 l/h cuses the to initite lockout ttest = 2. s ote Select volume of pipe section etween the gs vlves to e checked nd overpressure «P» set on pressure switch such tht the mximum permissile gs lekge rte «QLeck» will not exceed the rte specified in the locl regultions. / uilding Technologies en H Products

9 onnection digrm Legend L Si L lrm signl for «leking vlve» Min rely with contcts «r...» S Unit fuse (uilt-in) Lockout rely with contcts «r...» Pressure switch for vlve proving test (does not replce the gs pressure switch used to signl lck of gs) K1 Lockout reset utton K2 emote lockout reset utton Gs pressure switch (for lck of gs) H uxiliry rely with contcts «hr...» L1 Lockout wrning lmp (uilt-in) Si xternl primry fuse SK ontrol contct (for inititing the vlve proving test) SM Synchronous motor of progrmming mechnism 1) K1 1) K2 L1 SK 1 1 S r1 r2 tm. 3 r2 r1 1 1 P Gs M ~ SM X r3 X / H 1) Do not press «K...» for more thn seconds 13 L Sequence digrm Legend t t s First test phse with tmospheric pressure t2 2 s Second test phse with gs pressure For t3 2. s Filling the test spce t 2. s vcuting the test spce For t3 s Filling the test spce t s vcuting the test spce t.3 s Totl durtion of vlve proving test until urner is relesed t. s ntervl from strt to energizing min rely t s unning time of progrmming mechnism until it switches itself off in the operting = strt position (idle steps) X X t t Progrm indiction t1 Test1 t3 t2 Test2 t20 01e/ Output terminls controlled y the control unit or electriclly connected Gs vlves controlled to evcute the test spce Gs vlves controlled to fill the test spce ent vlve, normlly open; closed during vlve proving test from the eginning of «Test1» / uilding Technologies en H Products

10 onnection exmples with vent pipe to tmosphere using urner controls type LG2..., LG3... or LG... For other connections, refer to the connection digrm of the relevnt urner control. H L lve proving test prior to urner strtup LG2.../3.../.../LMG S / / 3 M 1 2 0/003 lve proving test following immeditely the controlled shutdown 0/003 LG2.../3.../.../LMG S / / M H L 2 1 GK2 3) P 1 r L r L ³) Only in connection with LMG2... Plnts with vent pipe to tmosphere 1 2 s01/0 onnection exmples with vent pipe to tmosphere using urner controls type LF..., LFL... or LGK..., or the control unit L... lve proving test during the prepurge time (min. 0 seconds) nd following immeditely the controlled shutdown in plnts with vent pipe to tmosphere. Dely on mke of rely d > 2 seconds. xpnding flme urner or interrupted pilot urner lve proving test following immeditely the controlled shutdown xpnding flme urner or interrupted pilot urner LF1 L1 LGK / / /001 LF1 L1 LGK... / 1 / 11/001 K2 d r LP K r L L / uilding Technologies en H Products

11 onnection exmples with vent pipe to tmosphere using urner controls type LF..., LFL... or LGK..., or the control unit L... For other connections, refer to the connection digrm of the relevnt urner control. lve proving test just prior to urner strtup lve proving test during the prepurge time (min. 0 s) xpnding flme urner or interrupted pilot urner xpnding flme urner or interrupted pilot urner LF1 L1 / 0/001 LF1 L1 1 1 / 0/001 LGK... 1 / LGK / LP K r K r L L lve proving test with 2 pressure switches G Pressure switch for the vlve proving test with gs pressure. This pressure switch must e set to the minimum gs pressure permitted during the proving test. f this pressure is not reched during the test, the will initite lockout. Pressure switch for the gs vlve proving test with tmospheric pressure. This pressure switch must e set to the mximum gs pressure permitted during the proving test with tmospheric pressure. f this pressure is exceeded during the test, the will initite lockout. G nd must e overlod-proof up to the gs pressure level. G 1 0/0 Plnts with vent pipe to tmosphere SKP0 1 2 s02/0 ) ( 11/ uilding Technologies en H Products

12 onnection exmples without vent pipe to tmosphere (for pplictions not covered y ) using urner controls type LF..., LFL... or LGK..., or the control unit L... lve proving test following immeditely the controlled shutdown in plnts without vent pipe. lve or «1» remins open fter the controlled shutdown until the strt of the first test phse is reched in order to evcute the test spce nd to urn off the gs in the comustion chmer during the fterurn time. xpnding flme urner or interrupted pilot urner LF1 L1 / 12/001 3 LGK... 1 / M2 K r L lve proving test with 2 pressure switches G Pressure switch for the vlve proving test with gs pressure. This pressure switch must e set to the minimum gs pressure permitted during the proving test. f this pressure is not reched during the test, the will initite lockout. Pressure switch for the gs vlve proving test with tmospheric pressure. This pressure switch must e set to the mximum gs pressure permitted during the proving test with tmospheric pressure. f this pressure is exceeded during the test, the will initite lockout. G nd must e overlod-proof up to the gs pressure level. G 1 0/0 Plnts without vent pipe to tmosphere PL SKP0 1 2 s03/0 ) ( 12/ uilding Technologies en H Products

13 onnection exmples without vent pipe to tmosphere using urner controls type LG2..., LG3... or LG... For other connections, refer to the connection digrm of the relevnt urner control. lve proving test prior to urner strtup lve proving test following immeditely the controlled shutdown LG2.../3.../.../LMG /003 LG2.../3.../.../LMG /003 L H M 2 S / / P M 2 GK2 3) S / / L H 1 3 r r L 1 L ³) Only in connection with LMG2... Plnts without vent pipe to tmosphere s0/0 1 2 Legend, 1, 2 Gs vlves controlled to evcute the test spce L lrm signl for «Leking vlve» Gs vlve controlled to fill the test spce ent vlve, normlly open; closed during vlve proving test from the eginning of «Test1» Pressure switch for vlve proving test (does not replce the gs pressure switch used to signl lck of gs) Sfety shutoff vlve, normlly closed (optionl) K2 emote lockout reset utton Gs pressure switch (for lck of gs) H Min switch LP ir pressure switch M... Fn («M2»: pre- nd postpurging) PL eference pressure for SKP0... ontrol thermostt or pressurestt (e.g. oiler control thermostt) Pipe orifice; its dimeter must e determined such tht in the event of leking pilot gs vlve, the pilot flme cnnot fterurn on completion of the second sfety time so tht presence of the min flme cnnot e simulted S Sfety limit thermostt T Dely off time rely; the time should e set to pprox. «t» (min. «t»... mx. «t») of the urner control Limit thermostt or pressure switch or pressure limiter 13/ uilding Technologies en H Products

14 onnection exmples without vent pipe to tmosphere using urner controls type LF..., LFL... or LGK..., or the control unit L... For other connections, refer to the connection digrm of the relevnt urner control. lve proving test just prior to urner strtup lve proving test during the prepurge time (min. 0 s) xpnding flme urner or interrupted pilot urner xpnding flme urner or interrupted pilot urner LF1 L1 / 2/001 LF1 L1 1 1 / 2/001 LGK... 1 / LGK / LP K2 1 1 r K r L L lve proving test with 2 pressure switches G Pressure switch for the vlve proving test with gs pressure. This pressure switch must e set to the minimum gs pressure permitted during the proving test. f this pressure is not reched during the test, the will initite lockout. Pressure switch for the gs vlve proving test with tmospheric pressure. This pressure switch must e set to the mximum gs pressure permitted during the proving test with tmospheric pressure. f this pressure is exceeded during the test, the will initite lockout. G nd must e overlod-proof up to the gs pressure level. G 1 Plnts without vent pipe to tmosphere 0/0 s0/0 ) ( P L SKP0 1 2 ) ( 1/ uilding Technologies en H Products

15 r2 onnection exmples without vent pipe to tmosphere using urner controls type LF..., LFL... or LGK..., or control unit L... nd ctutor SKP0... with expnding flme urners For other connections, refer to the connection digrm of the relevnt urner control. lve proving test just prior to urner strtup lve proving test during the prepurge time (min. 0 s) LF1 L /001 3/ LF1 L /001 3/ LGK / LGK / T M LP K K r2 1 1 LP 2 M L L lve proving test with 2 pressure switches G Pressure switch for the vlve proving test with gs pressure. This pressure switch must e set to the minimum gs pressure permitted during the proving test. f this pressure is not reched during the test, the will initite lockout. Pressure switch for the gs vlve proving test with tmospheric pressure. This pressure switch must e set to the mximum gs pressure permitted during the proving test with tmospheric pressure. f this pressure is exceeded during the test, the will initite lockout. G nd must e overlod-proof up to the gs pressure level. G 1 0/0 ir pressure «PL» for the SKP0... must e sufficiently high to open the SKP0... lthough the urner s ir dmper is closed. Otherwise, the will initite lockout when performing «Test1». Plnts without vent pipe to tmosphere SKP0 02/0 1/ uilding Technologies en H Products

16 Dimensions Dimensions in mm 11..., 1, 2, 2,, Plug-in se GM11 / GM11.1 m0/030 3 / 200 Siemens uilding Technologies Production GmH Suject to chnge! uilding Technologies en H Products