Valve proving control TC 410

Transcription

1 Valve proving conrol TC 0 T... ediion.99

2 Valve proving conrol TC 0 Valve consising of elecronic monioring uni and addiional exernal swich ing independen of ype of gas and Checks boh shu-off valves for leakage ing before saring burner or afer burner shu down Self-monioring elecronics Easy assembly LEDs indicae valve saus larm signal occurs, if a leakage is deeced Eliminaes ven valve FM approved Kromschröder is a company cerified o ISO 900 TC 0 p z V pplicaion Every ime he combusion sysem is operaed or shu down, he valve proving conrol TC ess he funcioning of boh valves on sysems wih wo shu-off valves. If an inadmissible leakage is regisered a one of he gas valves irevens he burner from saring. The oher valve coninues o operae properly o ensure ha he gas is safely shu-off. For auomaic valves, fas or slow opening wih sar gas rae or for manual rese valves. uomaic valves are direcly acivaed by he TC. Wih manual rese valves or very slow opening valves he leakproving is carried ou wih addiional auxiliary valves ,0.0

3 ➀ V p V L(+) Limis compl. ese Sar Pressure swich / urner conrol uni 0 VC 0 VC ( VDC) TC larm max., V N( ) V Examples of applicaion. Individual burner, discharging he ino he combusion chamber. and V: auomaic valves, fas or slow opening wih sar gas rae. The pipe mus have he same size as he auxiliary valve. ➁ pe [mbar] psig V uxiliary valves P V p V L(+) Limis compl. ese Pressure swich / urner conrol uni V N0(0) V N0(0) V 0N0(0) V 0/N f Sar TC VC 0 VC ( VDC) larm max., V N( ) V V. Individual burner, discharging he ino he combusion chamber. : manual rese valve, i mus be rese during he rial for igniion period of he burner conrol, oherwise he burner conrol will go o faul lockou, V: auomaic valve, fas or slow opening wih sar gas rae, V: auxiliary valve, only for leakproving, nominal size see diagram line volume V p [l] L(+) Limis compl. ese Sar Pressure swich / L(+) L(+) V 0 VC 0 VC ( VDC). quick T DIN C C S 8 Valves igh S 9 Failure 7 TC 0 ese Failure V 0 larm max., V N( ) V Feaures Valve proving conrol requires exernal swich. The swich mus be se o half he (only normally open conac required). Swich cabine housing for screwing on he boom secion or wih snap-on aachmen for DIN-rail mouning. insan can be se before or afer burner run. Teseriod P can be se TC 0T-: 0 up o 0 s TC 0T-0: 00 up o 00 s. ny es volume V p. (noe max. es duraion P = 00 s) S V

4 Funcion The valve proving conrol TC checks ha here are no inadmissable leaks in he valves before saring burner or afer a burner shu down. The es momen is deermined by changing he jumper seings. The program run explains he esrocedure during he TEST phase. he same ime he TC checks is own funcioning capabiliy. If he jumper is plugged ino "MODE " and he mains power supply is inerruped, he es resars afer he power has been resored. If he jumper is plugged ino "MODE " a resar only occurs if he inerrupion comes during he ime P or when he burner is in operaion. If he power is cu while he program is signalling a faul, boh red lamps come on when he power is resored and faul oupu remains se. before saring burner afer erminal is acivaed afer erminal is deacivaed MODE MODE, V, V L (+) L (+) Sar Sar leaking V leaking L (+) Sar afer burner shu down leaking V leaking L (+) Sar L (+) V + 0 Ι, Ι 0 W L M Mains volage Upsream valve Downsream valve Faul indicaion Inpu/oupu Yes, no Swich on, swich off Waiing ime Opening ime ing ime P = W + L + M TEST-Phase The valve proving conrol TC checks he in he space beween he wo valves ( p z ) by means of an exernal swich. I mus be se o half he ressure / in order o es boh valves wih he same sensiiviy. Depending on he resul of sep w, here are wo differen esrograms ( or ). TEST V V 0 Ι L = s V Ι 0 W + p Z > p z 0 Ι L = s V Ι 0 M M p Z > + p Z > + V V Tesrogram The down-sream valve V is, if here is in he p z during he waiing ime w. The up-sream valve mus be esed. Sep L opening ime = he p z is empied by opening valve V. Sep M esing ime = he valve is, if up o he end of he esing ime M here is no or if he is only slowly increasing. Should he increase repidly during his ime, valve is leaking. Tesrogram If here is no in he p z during he waiing ime w, he upsream valve is. The down-sream valve V mus be esed. Sep L opening ime = he p z is filled by opening valve. Sep M esing ime = valve V is, if a he end of he esing ime M he remained unchanged or if i's slowly decreasing. Should decrease rapidly, valve V is leaking.

5 Example: (see able volume on he lasage) Example: Technical daa Type of gas and : Dependen on exernal swich. The swich is se o half he /. The difference may no exceed ±0% of he se swiching. = psig (70 mbar) se swiching / = 0. psig ( mbar) max. difference 0. psig x 0% = 0.0 psig ( mbar x 0% =. mbar), ha means he swich-on and swich-off of he swich mus be beween 0. and 0. psig (, and 8. mbar). Mains volage: 0/0 VC, -/+0 %, 0/0 Hz 0/0 VC, -/+0 %, 0/0 Hz VDC, ± 0 %. Elecrical connecion: erminals W (. mm ). Power consumpion: 0 V wih 0/0 VC and 0/0 VC. W wih VDC. Type of enclosure: IP 0. Fusing: Fine-wire fuse., quick-blow, U (, slow-blow, H, o IEC 7), also proecs valve oupus and exernal -signal. Exernal -signal (valves igh): wih mains volage, max.. Exernal faul signal: Faul signalling conac, max., 0 V (no fused inernally). mbien emperaure: o 0 F (- o +0 C), no condensaion permied. Weigh: 0.88 lbs (0. kg). ese: by buon on uni or remoe rese by connecing he mains volage o erminal. ing momen adjusable via jumper MODE :efore saring burner, when erminal is acivaed or MODE :fer burner shu down, when erminal is deacivaed. Se a facory for esing before saring burner (MODE ). duraion P : adjusable via jumper TC 0T- from 0 o 0 s, se a facory for 0 s, TC 0T-0 from 00 o 00 s, se a facory for 00 s. Minimum sar gas rae for slow opening valves up o 0.8 f ( l) es volume: % of V' max up o 0. f ( l) es volume: 0 % of V' max : V 0N0-ND9 fas opening V: V 0N0-LD9 slow opening Disance: f (0. m) es volume V p = 0.0 f (.8 l) max volume flow V' max : f /h (00 m /h) Sar gas rae o be se: f /h x % = 77 f /h (00 m /h x % = m /h) 9." (7 mm).78" ( mm) (8." mm).9" ( mm) F C D E.7 (70 mm) Housing made of impac and hea-resisan plasic, plug-in upper secion wih operaing conrols and indicaors: = (yellow) = Valves igh (green) C = Failure, upsream valve (red) D = Failure, downsream valve (red) E = ese buon F = Fuse = Jumpers. oom secion wih connecion erminals, ground and pre-wired neural bus wih generous wiring comparmen. openings prepared for P gland.

6 Insallaion Fiing posiion: any. Insallaion by screwing on he boom secion or wih snap-on aachmen for DIN-rail mouning ( mm). L Noe on planning For a very large es volume V P and/or a long ven line an insered ven line should have a nominal diameer of 0 o allow he es volume V P o be vened. djusmen of TC TC valve proving conrol offers he possibiliy of checking for a defined leakage rae V' L. This can be adjused via he es duraion P. If a small leakage rae V' L is o be deeced, a longer es duraion P mus be se. The es duraion P mus be se individually for each insallaion. volume V P in f (liers) pipe pipe L size area f (. m). f (. m) f (. m) f f liers f liers f liers " " " " " " To deermine he es duraion following daa mus be known: Inle in psig (mbar), Leakage rae V' L in f /h (l/h), volume V P in f (l). duraion: P = x ( ) 7 x [psig] x V p [f ] + s V' L [f /h] V = psig (0 mbar) V' max = 0,000 f/h (80 m/h) V p = 0. f (. l) f (0.m) pipe ø inch V p P = x e [mbar] x V p [l] ( + V' L [l/h] ) s ecommendaion: The leakage rae V' L should no exceed 0. % of he maximum volume flow V' max. Example calculaion: Inle = psig (0 mbar) Maximum volume flow V' max = 0,000 f /h (80 m /h) V' max x 0. % Leakage rae V' L = 0 f /h (80 l/h) Two valves inch, disance f (0. m) volume V P = 0. f (. l) Kromschröder uses environmen-friendly producion mehods. We reserve he righ o make echnical changes designed o improve our producs wihourior noice. Type code Type Version = ing before or afer burner run TC = Exernal swich = 0 min = Max. eseriod P 0 min = 0 Mains volage 0/0 VC = T 0/0 VC = N VDC = K 0 T - N duraion: psig x 0. f P = x 7 x + s = 9 s ( 0 f /h ) P = x 0 mbar x. l + ( 80 l/h ) s = 9 s Se he jumper o he nex higher value (0 s). uxiliary valve V (see diagram on page ) V P = 0. f (. l), = psig (0 mbar) poin, choose: V N0. Kromschroder Inc. 9-H eorgeown d. Hudson, OH Phone Fax KSINCUS@aol.com. Kromschröder Posfach 809 D-908 Osnabrück Phone 0 / -0 Fax 0 / kromschroeder@-online.de ep/ivd.000