L1 - ADJUSTMENT TO GAS PRESSURE REGULATOR
1--Set manifoldpressureasfo_lowsfor variousgases.
a.NaturalGas................ 31/2"WaterColumn b,LiquefiedPetroleumGas ................ 10" WaterColumn
2--To adjustgaspressure,turn adjustingscrewof gaspressureregulator,outto decreasepressure,turnin toincreasepressure,Referto control
sheetssuppliedwith boilerfor locationofgas pressureregulator•
3--In no caseshouldthe finalmanifoldpressurevarymorethan plusor minus03 incheswatercolumnfromtheabovespecifiedpressures•Any
necessarymajorchangesinthe flowshouldbemadeby changingthe sizeofthe burnerorifice.
MinimumPermissibleSupplyPressurefor Purposeof InputAdjustment.... 5.0" W.C.NaturalGas 11.0" W.C LiquefiedPetroleumGas
MaximumPermissibleSupplyPressureto the Boiler .................. 13.5" W.C.NaturalGas 13.5" W.C LiquefiedPetroleumGas
NOTE: MINIMUMRATEASSHOWNONTHE RATINGPLATE!S OBTAINEDBY A FIXEDORIFICELOCATEDINTHEGASTRAINANDIS NOT
ADJUSTABLE•
L2- ADJUSTMENTOFPILOTGASFLOWWITHMR8200AND MR8300COMBINATIONGASVALVES
To maximizethermocouplelife,particularlyonnaturalgasinstallationswith gassupplypressuresabove9" W,C.,reducethepilot gasflow.
WARNING:TURNOFFALL ELECTRICPOWERTOTHEAPPLIANCE.TURNGASCONTROLKNOBTO "PILOT'POSITION•
1--Locate and removethe pilotadjustmentcapscrew,whichisadjacenttothepilottube connectionontopof gasvalve.
2--Remove pilot observationcoverdoor.SeeFigure11.
3--Turn the pilotadjustmentscrewclockwiseuntilthe pilot flameextinguishes•Then increasethe pilotflow just to thepointthatthegasvalveholds
in whenrelightingthe pilotpersteps9 and 10of LightingInstructionsonpage25 (turnscrewno morethana 1/8turn).
NOTICE:THE FIRSTFEWTURNSOFTHEADJUSTMENTSCREWMAYNOTCAUSEANYCHANGEINTHEPILOTFLOW.SUBSEQUENT
PARTIALTURNSOFTHE ADJUSTMENTSCREWMAYHAVEA GREATIMPACTON PILOTFLOW.
4--Turn on electricpowerto the appliance.
5--Turn Gas ControlKnobto"On"positionper the LightingInstructionsonpage 25.
6--Verify pilot remainslitaftershutdownfroma boiler"ON"cycleofat leasttenminutes,If pilot extinguishes,followLightingInstructionsonpage25
and again slightlyincreasepilotflow.
7--Make a fina_slightincreaseinthe sizeofthe pilotto ensuresufficientpilot signalunderalloperatingconditions,justtothepointthat youobserve
a slight increasein thesizeof theflame (nomore thanan 1/8turn).
8--Replace adjustmentcapscrewandobservationcover door•
M-BURNERINPUT
1--Refer to ratinglabelmountedon thejacketinner-frontpanelto obtainthe requiredBTUper hourinput•Innocaseshallthe inputtotheboiler
exceedthat shownonthe ratinglabel.
2--Check input by useofthefollowingformula:Suggestreadingmeterfor2 Cu.Ft.
_Q0 x Fx H_ BTU/Hr.Input
T
3600 -- Secondsperhour
F -- Cu.Ft.GasRegisteredonMeter
H -- HeatValueof Gas inBTU/Cu.Fb
T -- TimeinSecondsof MeterisRead
NUMBER OF ORIFICE SPUDS REQUIRED
MODELNUMBER-- 61-03 61-04 61-05 61-06 61-07 61-08 62-09 62-10 62-11 62-12 62-13 62-14 62-15
ORIFICESPUDS-- 4 6 8 10 12 14 16 18 20 22 24 26 28
• k
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