Operating instructions

THERMOSTATS
ACCModels.Twoaccessoryoptionsareavailable:
•Thehand-heldIRRCModel300non-programmableremotethermostat.
•Thewall-mountedprogrammablethermostat.
Instructionsforinstallingbothoptionsaresuppliedwiththem.
ECSModels.Anoptionalbatterypoweredwall-mountedprogrammablethermostatisavailable.
GASPRESSUREADJUSTMENT.Allpressureadjustmentsmustbemadewhiletheheateris
operatingonthe‘HIGH’setting.
ACCNGandACCLP.Thesehaveapressureregulatorinsidethecontrolvalve.Therearetwotestpoints
sidebysideontopofthecontrolvalve–theoutletpressuretestpointistheoneclosertotheflamesize
controlknob.Ifadjustmentisnecessary,uncouplethecontrolrodfromthetopoftheflamesizecontrol
knob,extractthescrewfromdownthecentreofthisknobandpulltheknoboffvertically.Thepressureis
thensetbyrotatingtheknurledplasticwheelexposedbyremovingtheknob.Oncethepressureiscorrect
(0.95kPaforNGor2.5kPaforLP),caremustbetakennottoturntheplasticwheelastheknobisre-
fittedinitsmaximumanti-clockwiseposition.Thispositionissetwhentheskirtoftheknobcontactingthe
adjacent metal up-stand. Rotate the knob clockwise and then fully anti-clockwise while observing the
pressuretoverifythatitiscorrectbeforereplacingtheretainingscrewandre-couplingthecontrolrod.
ECSNGandECSLP.Thesealsohaveapressureregulatorinthecontrolvalve.Theoutletpressuretest
pointisonthetopofthecontrolvalveandistheoneremotefromthegasinletconnection.Therearetwo
pressuresettingstoadjust,highandlow.Accesstotheadjustersisgainedbyfirstremovingtheheatshield
above the valve and then removing the protective transparent cap at the very top of the control valve
modulating coil. Thiswill expose the central screw (low pressure adjuster) and a 10mm hexagonal nut
surrounding it (high pressure adjuster). Note that the modulating coil may be rotated through 90° if
necessary toprovide easier access for pressureadjustments. Beforeadjusting thehighpressure, the fire
mustbealightandburningatthe‘HIGH’setting.(Holddownthe+endofthetoprockerswitchonthe
handpiecefor30secondstoensurethis).
Setthehighpressurefirst.NGhighpressureshouldbe0.95kPaandLPhighpressureshouldbe2.3kPa.
Adjust,ifnecessary,byrotatingthe10mmnut,screwingdowntoincreasethepressureanduptodecrease
it.
Beforesettingthelowpressure,removeoneofthebluewiresconnectedtothetopofthemodulatingcoil.
Thereisnoneed to alter thehandpiece control setting.Adjustthe low pressure by rotating the central
Phillipsheadscrew, takingcarenot toshift theposition ofthealready adjusted10mm hex.nut. Screw
downtoincreasethepressure.Thecorrectlowpressuresare1.0kPaforLPand0.40kPaforNG.
Replacetheprotectivecapontopoftheadjusters,re-fitthebluewiretothemodulatingcoil,rotatethe
assemblyabovethecoiltoitsoriginalpositionandre-fittheheatshieldabovethevalve.
FAN
ACC MODELS. These have a Thermodisc heat operated switch incorporated in the fan wiring circuit to
preventthefanfromrunninguntilthefireboxhasreachedareasonableworkingtemperature.Itwillnotbe
possibletocheckthefanoperationuntilabouttenminutesafterthefirehasbeenliton‘HIGH’.Whenthis
timehaselapsed,checktheoperationofthefanonallspeedsettings.Verifycorrectoperation.
ECSMODELS.ThesehaveaThermodiscalso(seeaboveparagraph).Oncethefireboxhasheatedup,check
thefanoperationbypressingthelowerrockerswitchonthehandpiece.Pressingthe+endrepeatedlywill
increasethespeedthroughallfourfanspeedsettings(threespeedsandoff),whilepressingthe–endwill
stepitdownthroughthespeeds.Verifycorrectoperation.
FLUE.USEONLYANAPPROVEDFLUESYSTEM.
NOTE.Forsafeoperation,thefluemustneverbelessthan900mmlong.
1.Standtheheaterinitsproposedposition,takingcaretoobservetheminimumclearancesshownonpage
7.Theheaterdoesnotrequireafloorprotector(hearth).
2. Drop a plumb-bob from the ceiling to hang centrally in the flue socket of the heater and mark the
positionontheceiling.Driveasmallnailthroughatthispointandinspecttheceilingandrooftoensure
thattheflueanditstrimwillbeatleast25mmclearofanycombustiblematerial.Thefluetermination
requirementsstatedin3belowwillalsoneedtobemet.
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