FLAME SAFEGUARn CONTRULS phần 8 pptx

062.'" SP"'A~ GENERATOR

Ef:lERGIZEO

IFLA"E OlTiCTOIl OHI

FIG. 84- SYNCHRONIZATION OF A Q624A

SOLIO STATE SPARK GENERATOR

" . AND A MINIPEEPER ULTRAVIOLET

FLAME DETECTOR.

WIRING

The voltage and frequency of the power s~ly cen

netted to the Q624A must be 120 volts, 60 Hz. The chaSSis

of the Q624A must be propfufy grounded at 9JI times, even

dUrlngbench testing; otherwise, the device may bum out.

Loosen the cover screw (Fig. 83) and remove the cover.

Insert the 2leact.viras (NEC Class 1) through the knockout

in the boltom at the cese and connect them fa the screw

terminals on the terminal board, and to the terminal strip or

wirIng sl.Jbbase 01 the flame safeguard control (refer to Ta￾bla VII and Fig. 85 or 86). Terminals T1 and T2 on the

Q624A must be connected to the prc:per terminals of the

flame sa1ElQuard control, as given in Table Vll. If the name

deteclof and the ignition transformer are nor properly Con￾nected, the detector may sense ignition spark, which could

cause a hazardous condition.

TABLE VII-WIRING CONNECTIONS FOR THE

0624A SOUD STATE SPARK GENERATOR

FLAMe

SAFEGUARD

0624A

CONTROL

TER_ FLAME SAFEGUARD

MODeL MINAL CONTROL TeRMINAL

RA890G IU1d R4795 T1 •

T2 l2

Apprtlprlate ignition terminal

R4126 and R4127 T, lIS specified on ptDgrarrmel'

Instruction sheeL

T2 l2

l2

R4140 and R4150

T1

Appropriate Igntllon terminal

lIS speci1led on programmer

Il'I9tnJction sheet.

T2

I

R~'ace the cover and lighten the cover screw. Coo￾necl the high voltage electrode (Fig, 83) to the ignition

eleCtrode on the gas pilot bomB!. (The high voltaQEl eleC￾trode may be a qulck-connect type, or it may have a

threaded lerminal nut, depending on the model of the

0624A.) Use Honeywell Spec No. R1061012 Ignition ca￾ble or eq.Jivalen1. (This wire is raled at 350 F [1T5 CJ for

F'A..£ TER..' ...... BOUO ...FEGu ...RO ,,.SIDE Qil....

CO"TRO'

t 6 :£J" L2 T>

,,,,.. T,o.. TER""N"'L C, FL.....E SM[(],v... RD

CC"TR"'L, UE ""'''C.",...TE INnAv" 'C" S,.UT 'DR tE....,N ...L OU''''''AT'O''

8 TER"" ...... ITR" o~ ",R'NG ~VB8"'~[

& vS[ NH <l"'~l I "'Ill'"'' ,,,.

FIG. B5- 0624A CONNECTIONS TO AN

RAB90G, R4795, R4126, OR R4127

FLAME SAFEGUARD CONTROL.

n .....l TE..........L50... RO

.... FEGVAIIO 'N~'O[ Q62.... C"'''TRD'

t u~& T!

6

_I",,.01l0N TEll"'"'''' O' F,A"E ~AF£"v"'''o

CONTROL... SEE .......O...,...TE ,,,STRun,o,,

SHEET 'Oil HR"'I"A' OE~'G"AT'ON.

& TERM'N"'L ITRIP DR ""RI.... ~uBB...n

& VSE ..Ie ......", ""RING " ...

FIG. 86- Q624A CONNECTIONS TO AN R4140 OR

R4150 FLAME SAFEGUARD CONTROL.

continuous duty, and up to 500 F 1260 C] for intermittent

use. 11 has been tested t02S.ooo volts.) The ignition caDle

should not exceed 15 reel [4.6 metres] in length,

CHECKOUT OF THE QS24A

Aner Ihe Q624A installation has been compleled, the

fol1owinQ checks should be made to ensure that the sys￾lem is working pr~rly.

IGNITION SPARK RESPONSE TEST

The flame relay shOuld not respond lDull in) 10 ignition

spark. To determine flame detector sensitivity to ignition

spark. per10rm the following steps:

1. Shut off lhe fuel suj:pJy to Ihe pilot and main fuel

valve(s) manually.

2. Slart the SYSlem f:7.j raising the controller set point or

f:7.j pressirlQ the START button.

3. Energize lhe Q624A Sofid State Spark Generator so

an ig1ition spark Is produCed between Ihe eleclrode and

ground.

4. Check to be sure that ignition has nol occurred.

rrttere should be no flame.) Repeal steps 1 through 3 until

Ihere is no 1lame.

5. Check the flams relay on Ihe flame saf~rd con￾trol. 11 the relay has not pulled In. the system is ~ralirlQ

prc:perly. Continue the cheCkout with the Pilot Turndown

Test.

6. It the flame relay pUlis in, stop Ihe system, r~ace

the Q6.24A. and repeat steps 2 through 5.

260

REMOTE RESET ASSEMBLIES ----------­

11110Z11

(FOA AA.,o's

A,NO A.7n·Sf

\187018

(FOA A.I'O·S)

11876011

(FOA A.l.0'S)

7. Ilihe flame relay pulls in after replacing the Q624A,

stop the system, replace the flame safeguard control, and

repeat steps 2 through 5.

o. - 8. If the flame relay pulls in after replacing the name

saf8QUard control, Contact the local Honeywell branch

office.

Remole reset assemblies provide the capability of re￾selting the lockout (safety) switch in flame saleguard con￾trols from a remote location. All example of this awlication

'IS where the flame safeg.Jard control is located on an inac￾cessible roof or suspended from a ceiling with no catwalk.

AIlother example is where the ftalT\El safeguard control is

mounted in an explosion-proot enClosure; the housing is

secured by many bolts. In all of these awlications, it is dif￾licult to gel allhe resel buttQ1 on the 11ame safeguard can·

lrol. so the ability to remotely r9S9t lhe lockout switch is

highly desirable.

Some insurance agencies and code bodies severely

restricllhe use 01 remale reset assemblies, If there is any

question, these aulhorities should be consulted prior to in￾stallation of the reset assemblies,

REMOTE RESET COVERS

Remote reset covers are heavy dUty metal covers with

a remole reset assembly mounted 011 them. The cover fits

over the flame safeguard control. The remote reset as￾semtJly consists of a 120 Vall, 60 Hz solenoid, with a

plunger Ihat is direCtly ali..,-,ed with the (esel bullon Q11he

ftalT\El safeguard control. Connecled to the solenoid is a 17

inch [430 mm] length of 2-wire, flexible Conduit, plus 19

inches [480 mm] 01 exposed, insulated leadwires. Longer

wires, spliCed to these 2 wires, are connected 10 a remote

PUSh-bulton switCh, Pressing the push-bu!lon switch ener￾gizes the solenoid and activates the plunger, The plunger

awlies pressure to the reset bullon on the flame sale￾guard control to reset the lockout (safely) switch.

Flemote reset covers available are shown in Fig, 87,

Honeywell part numbers are:

118701 a-for use on R4150 Flame Safeguard Pro￾gramming Controls.

118702B-1or use on RA890 and R4795 Flame sate￾guard Primary Controls.

198365A-for use on R7795 Flame Safeguard Primary

Controls,

118760B-for use on R4140 Flame safeg.Jard Pro￾gramming Controls.

PILOT TURNDOWN TEST

Refer 10 the flame safeguard control )nslnJclion sheel

tor the exact procedure to be used in performing the pilot

lurndown test.

FINAL CHECKOUT

After other checks have been completed, restore the

system to normal operation and ooserve at least one com￾plete cycle fo be sure of satisfactory burner operation.

FIG. 87-REMOTE RESET COVE-FIS.

261 71·97558-1

••

To Install a remote reset CO'll8r, loosen the screw(s) in

the old cover llf there Is one) and remove It. Allgl the sola-­

noid plunger In the new cover with the reset button on the

flame safeQ.JlHd control, and mounllhe cover. Make sure

there !tiar leasl 1/4 Inch 16.5 mmj clearance 101" the

plunger. Then tighten the cover screw(s).

AI the deSired remOle location mount a momentary

push-bullon swilch. The switch must be rated to carry at

least 15 VA Ohe power qonsu~ion of the remote reset

solenoi9). Connecl the push.outton swilch 10 lhe solenoid

(Fig. 88). Do notUS&8 toggleswiteh; if laft in the "on" posi·

tion. II wguld cause the lockout switch to remain in the

"open" posilion. The solenoid plunger of the remote resel

assembly must disengage from the reset bullon on the

flame safeguard conirol In order for the lockout sWitch to

ee>rTWlete the circuli inside the control.

& PRO.,O' 0"~ONN'C1 ",AN, ANOOV'R~OAOPRonc·~,,~""'....I A' RH.....".O

In. '0T< "Un 00"<..0'0" .. _TEO A'" VA

In "0 ", A' O"'R<O ~,..O.. "oLAno"

-----c--~

FIG. 88- TYPICAL HOOKUP OF A REMOTE

RESET ASSEMBLY.

If addilional wire is needed to reach the push'bullon

switch, splice it 10 the 2leadwires exlending from the flex￾Ible conduit on the reset assembly (Fig. B7). Moisture-ra-­

siSlanl No. '4 wire. suilablefor atleasf 167 F [75 C) If used

with an RA8900r R4795 , or for all~1194 F 190 C] if used

with an R4140 or R4150, is recommended for normal

installations.

The lockout switch can be reset right al the flame safe￾guard control by pressing the end of the solenoid plunger,

or it CM be reselfrom lhe remole localion by presslnljlhe

remOle push-bullcn switch.

REMOTE RESET ASSEMBLY (PART NO.

118811A) FOR AN R4138C OR 0

This remote Jeset a.ssenbly Is very similar to the as￾sembly used 011 Ihe ramote reset covers, except thai II

does not have a flexible conduit around its leadwlres. and

It has asolenoid arm (Fig. 90) which depresses lhe JoC~oul

swllch reset bUIlDl'l on the R4138when the solenoid Is en￾ergiZed. To mount the remole reset assembly on an

R4138C or D Induslrial Flame safeguard Control, insert

262

the nut and washer 00 the remote reset assembly Into lhe

hole in the chassis just below the loc~out switch on the

R4138 (Fig. 89). Make sure the washer engages lhe Inside

lip of the hole. Slide the remote reset assembly upward (as

shown by the arrow) as far as it will go. Insert the mounllng

screw and tIghten It securely (Fig. 90). Make sure there is a

minimum of 1/4 Inch [6.5 rTVTI] clearance between the sole￾noid arm and the lockout switch reset bullon when the

lockout swilcn is reset. Wiring and q:'lEIration 01 this assam·

biy is the same as for the remote reset covers (Fig. 68).

:,U' HANDLE

- .______LOCI<OUT 'I,,,

~'.,:,-; r--RE~QTE '"'''"

RESET

• I , ., ~_\. ASSEMIIl" •

RAllS r·.....iJ.--I CHASSIS

"O,-E IN

C"ASSIS

\ NUT AND WAS"EIl

".,

FIG. 89-INSTALLING A '1BB'1A REMOTE

RESET ASSEMBLY ON AN R4138.

LOCKOUT

SWorCH

"ESU

BUTTON

~O:~oJl

J';l!---SOLENOIO A....

__-.. EMOTE

RESET

ASSEMBLV

SOLENOID

'---W'RE {2_(lLACKI

~~L MOUNTING CHASSISr) SCIIEW "u L _

FIG. 90-A '18811A REMOTE RESET ASSEMBLY

INSTALLED.