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<br />~.L5U\,.o\., L.II:I,:l t.tV'-'.lfl. .....1..:"....1. L.L'V.L.L '.Ji l-'.....vL.
<br />after removal for.rcpairs or clcan-
<br />ing, pilots will be in the same posi-
<br />tion 'relative to the main burner:as
<br />when originally installed.
<br />The pilot 'flame shall be in such a
<br />position that in the event of a drop
<br />in gas pressure, the .contact between
<br />pilot flame and flame rod or !her-
<br />mocouple shall be ':Jroken bcfOlT
<br />tbe point where the pilot flame will
<br />fail to reliably ignite thc main burn-
<br />er. In the e.vcnt that this cannot
<br />be accomplished then the flame rod
<br />or th~rmdcouple shal> supervise the
<br />main .burner flame.
<br />The. flame conductivity or flame
<br />rectification type of. pilot shall con-
<br />sist of a flame rod and pilot burn-
<br />er,flame head (if of the :flame
<br />head type), relay, sturt-stop push
<br />button switch, solenoid gas vah'c
<br />for shutting off safety pilot gas '"
<br />well as gas to the flame pilot~,
<br />necessary high tension cable, and a
<br />positive shut-off gas valve carrying
<br />the approval of the Heating In:-
<br />spector. The safety pilot shaH be
<br />so arranged as to prevent its being
<br />lit unless the main safety valve is
<br />in the ofLposition.
<br />~220 All pilot burners shall be sup-
<br />['Jorted in such a manner that their
<br />[tosition relative to the1main burn-
<br />er orburners will remain fixed.
<br />
<br />1i-z21 Pilot lines shall be connected
<br />to ,vertical supply lines when pos-
<br />,ible. . When horizontal line is 113F::d,
<br />:onnection must be made on top
<br />Jr _side. Connection must Irc ahead
<br />of.all cO;ltrols induding regulator
<br />lnd appliance shut-off and shall be
<br />provided with a separate shut-off
<br />.~ ::~ck: Where gas pres~ure is great-
<br />~r than that for which pilots are
<br />:lesigned a pressure reguliltor (pilot'
<br />~egulator) mUst be installed on the
<br />:iownstream side of pilot line shut-
<br />Jff cock.
<br />...222 A shut-off cock must be in-
<br />;talled on branch line to safety pi-
<br />ot and to each branch line of plain
<br />Jilot system.
<br />;-223 A manually operated approv-
<br />~d shut-off cock shall be installed
<br />ldjacent to the gas burner on th"
<br />fown stream of all other control
<br />ralves cither manual or automatic.
<br />;uch cock shall be so located that
<br />t is readily accessiible and shall
<br />:Icarly indicatc the "on" and "off'
<br />Josition, or direction of rotation to
<br />lpen or close. This valve or '~,JCk
<br />nust have handle securely attached,
<br />n such a manne.r that it may not
<br />,c readily removed. When gas pres-
<br />:ur~i arc greater than 1 psig the
<br />:ock must be of the lubricated plug
<br />
<br />,
<br />
<br />
<br />.~oc~'" cu U~oW'''''. '6U', . "6"U'~~?"" hon. ':.',.'.:;)
<br />the seat when in the .closedv().si~ 6-2410nall 'lnsla1!itiot{
<br />,tion; the_yalve asserr;bly"s~altQeinJutca:pa:citYln't';icce~s~'
<br />gas tight in . allpositi?ns~,Pa.c~ip~:1:ll'U per hour/the l';drii'
<br />glands .shall.. be desigIledsQ,~8a~submit .to tbeHeadiig
<br />the valve will ~ot ~e~a?e i~~~5t~,withhisr~que:!-t{orit>'
<br />ative by exceSSIVe tIghtelllng_ qf the,. tail.draWirighi1iide'".DY;
<br />packing nut.. c,,< ' m,{nuJacturershOwing';:
<br />Either ,..' th(: valve shall)ncprpqr:~te installing burner, recomtnlf
<br />mea-lIs:: FbI" r requiring a man uitJ,:,bp<;'r- nace . construction .inci~dr
<br />ation". foro, re-opening .'. of thl'v'tlvc insulation:control.. as;e~biy'7al'
<br />afte~' ''it'' 't.h~sbeen closed Of the 'elecc with pipit:i' details, pipe -'~izes'/;;'Yi"
<br />trical circ~it shall be so. arr~nge~ sizes, type- and make ~f c(}~troi>~
<br />as to reqUIre a manualope~ahon to of the uptake damperpjJeratin
<br />re-open the valve afte~)t ~as been type. If this is to be furnisl1ed b'
<br />closed. In no case shall"al.ves be abl.e spmeoneother than the .~'l.1r~~'1
<br />to be opened manualfyllnttl safetYPI-iUanufacturer.. he muSt showthis.a !
<br />lots are lighted and ci:cui~. completei1 it will be. applie.dl . to. his .... butiie"
<br />or low~wate.rcutoff ctrcUlthas be~n This drawing must be one.t1i.if
<br />completed. . ,. .. .. m~de ~p for the specificj6b:,;;ll,~ d
<br />~-232 Where a sWltchls.1l1st.alkd cann6t.be what is Idmwn as a ty'p1t ;-r~,,;;.
<br />In the. lo~-water cutoff,~~rcUlt to cal i~staHationor a. .mar~~~i,;ui' ,cr;>~?~qt~.
<br />k. eep, elr. CUlt to safe.ty ..S.....h...U..'.t. ..off.. v.al..Y.e d..rawI~~.. ._.o.J.. ...s...o.m.. e Slm....I....I...a........:..... ...In. st..a.....lla.........l~h~I',,~~rt'
<br />closed .wh~n blowm~, .down.1 water hon wltli-changes to 'S1,1lt . the )0 . (
<br />column, SWitch must b: of .the push in question. Thisdrawiognijlsfha
<br />button type so that when bPe.rat~: a drawillgI1u..irIbe!'as-w~ILasa;{i!
<br />releases button. the~o.~t~ol. ClreUl. listingthe:iiame of the job to whic
<br />to safety shut-off valve wllI Le. nor~ it applies:Ititd~~irablethatt~
<br />mal. . . .... .... drawingITIa)'._~e,;:rnade 'by't!1ehq.,
<br />6-233 00 large boIl:rs where a c9m- Officeofthe':hurri'erm;lllufactU&-
<br />petent attendant IS Cot.lstan.tly on b t. . 11'. ..... .f.'.......t....h... ; dra '1. .... ... .11.. ....a'..
<br />..... .. .. . U, III eu. 0,.' IS,. W ng.. d
<br />duty, It wIll be permiSSible to ll1stal1 be made bytheto~al representati
<br />a bypass around the safety. valve lin which case it~ust" becer'tifit
<br />with the valve in the bypass loek- b an officer of thmantifacIur'
<br />ed, or sealed. In large ~oiler pl;l.!1-ts t~atit isappro.V!':dbey,tl,1i~; '.
<br />uSing steatn for generatiOn of pow- ... ......... ........:;:'. '. .......1
<br />cr or light and having compctent 6-242 At completi()n.ofil)~t~lla:ti
<br />opcrators on duty at aU times" the the installer shaH . ";{dJusfa.llequi'
<br />Use of limiting devices as coverl:d ment and controls and,in;thep,r'
<br />in 6-228 will not be mandatory. ence of the inspect()r,ud~l1l0ns,tra
<br />6-234 For burners or a combination t4e.proper'" functio~ing i:i(:aU,equi,
<br />o{ burners not exceeding a totalin~ ment and controls throughout t e'
<br />put of 500,000 BTU per hour, a com- nprma.J,y:range. of operation 'fro~'! ,~n
<br />bin at ion control of the on-off type m'inimum t'o -'iTlaxitn.um input. _ , ,~, ~~"
<br />with_quick opening conttor-valves combustion analysi,s shaH be lila,':' r ',!,he'
<br />may be used. to demonstl'ate proper conbustic:p,t ~sf!l, t
<br />6-235 .For a burner or a .combination results 'throughout the operati~, ::tf1e 'th
<br />of burners not excecdmg 2,500,000 range. Burne:rssh~l1beable ....... '~lm!lte~
<br />BTU pcr hour input, an on~bff type derilOnstrate .mainb~rnerflame~~" :f.~'9:~ir~
<br />of control may be used provided thetentionwithouipllot stabili~atiol!t '~sha
<br />autOl:latic gas- valve is O.f. .the slow but Pilotsl.~a... lib. e.\ls...ed..... i.n.. all. case.s.. (,..'...:'...... ....'1.';. "..8..,.........I.....p... s
<br />openlllg type. Valve must be so de- TN CINE: RA1".OR S fl. a upo
<br />signed that an adjustablc opening DOMESTIC OR ,{i,', ~.9 Stur
<br />time of from ten (10) to thirty (30) PORTA~LE TYPE ';::f.Uilditii
<br />
<br />~::~~:~:€:~~;n ~e n:~t~~e~x:::~. ~ii~~ ~~:~:~l~:~;~:..~. _~:..~~~.r~l~~. ~o.t~~:::c.~.n..~.<.. j~.j.,il. e...~........ ..........~...,e.t.r.. i..g.....t..~...i:..n........:. .;.
<br />
<br />6-230 For a burner or a combina- flue withgas-firecj' boilers, furna~t$' ~10 N' .,
<br />tion o.r. burners with. ~ tot~l input o~. heating. . deVie. e~...pr.....o...v... .i.d.. ing.. ..th~........!~... ...~.~..:.:...'..'....-.:~....."..s...._..~....d..... ..............;
<br />exceellllg" 2,500.000BTU perhom, a C11lC'rator or rubbIsh burner Illsta . .~. .~WW
<br />co~bustion control of the modu- tjo~ conforms to thc: {olloWing.': 7i~U.,
<br />latmg . type must be used.. qUlrements; . .. . )j::.q~igCJO<,;
<br />Where the uptake or outlet damper I-Incinerators installed-in.<:blr~I': iPt
<br />,i~ securely lo~ked in a fixed P?si- j~nction with g~S sp~cehea..t.'.i.n.....g..T.-.......,..~.... ."...~.;;.;... ........... .,..e.:',.,...:..... ...... ...'
<br />hon fot maxImum l?ad condlhon, vices and venhng- mto thc,~~~,,_:\ e;''tJl~,
<br />the control m~y be ?I the type that fluc. " /~i;>;-,l,(!a!l.~?,
<br />operates the mletalr louvre of the a. shall be deSigned with. gai<l \ ,:l\ 11.b'fl:';'
<br />burner in conjunction withthc gas co n s.t ant electricalap;rili#.>>' [.lted.;','
<br />valve by means of l:lcchanical link- heating elements to ~a9iliyMr ,Z ,12,Alt~~
<br />.' ""';,,'.'.. ,J~'" ,': " :, "~;::.~.".
<br />
<br />ogen-
<br />ceptas
<br />in this i
<br />e" Arn-!
<br />a.fe.~rals:
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