IDEAL MINI C24 User manual

usersguide
mini
C24/C28/C32
S24/S28
Whenreplacing anypartofthisappliance,useonlysparepartsthatyoucanbe
assuredconformtosafetyand performancespecificationthatwerequire.Donotuse
reconditionedorcopypartsthathavenotbeenclearlyauthorised byIdealBoilers
YourIdealusersguide
See reverseformini installation and servicing guide

Mini
MiniC24 G.C.applianceNo.47---348---18
MiniC28 G.C.applianceNo.47---348---19
MiniC32 G.C.applianceNo.47---348---25A
MiniS24 G.C.applianceNo.41---392---98
MiniS28 G.C.applianceNo.41---392---99
Destinationcountries:GB,IE
INTRODUCTION
Miniarewall mounted,roomsealed,non condensing boilers
featuring full sequence automatic sparkignition and fan
assisted combustion.
MiniC24,MiniC28 and MiniC32 arelow watercontent
combinationgasboilers.
MiniS24 and MiniS28 arelow watercontentsystemgas
boilers.
SAFETY
CurrentGasSafety(Installation&Use)
Regulationsor rulesinforce
Inyourowninterest,andthatofsafety,itisthelawthat this
boilermustbeinstalled byCORGIregisteredinstallerorinIE
acompetentperson,inaccordancewiththeabove
regulations.
Itisessentialthat theinstructionsinthisbookletarestrictly
followed,forsafeandeconomicaloperationoftheboiler.
ELECTRICITYSUPPLY
Theappliancemustbe efficientlyearthed.
Supply230 V50 Hz.Thefusingshould be3A.
Connectionmustbemadeinawaythatallowscomplete
isolationofthe electricalsupply,suchasadoublepoleswitch,
havinga3mm (1/8”)contactseparationinbothpoles,ora
plugandsocketservingonlytheboilerandsystemcontrols.
Themeansofisolationmustbeaccessibletotheuserafter
installation.
IMPORTANTNOTES
FThisappliancemustnotbeoperatedwithout thecasing
correctlyfittedandforminganadequateseal.
FIftheboilerisinstalledinacompartment thenthe
compartmentMUSTNOTbeusedforstoragepurposes.
FUndernocircumstances shouldanyofthesealed
componentsonthisappliancebeusedincorrectlyor
tamperedwith.
FIfitisknownorsuspectedthatafaultexistontheboiler
thenitMUSTNOTBEUSEDuntilthefaulthasbeen
corrected byaCORGIregisteredinstallerorinIEa
competentperson.
MINIMUMCLEARANCES
Clearancesof200 mm (7 7/8“)aboveand below,25 mm (1“)
atleft,50 mm (2“)atrightand450 mm (17 3/4“)at thefrontof
theboilercasemustbeallowedforservicing.
Afterinstallationthefollowingclearancesareallowableduring
use,providingthe encasingpartsareremoveablefor
servicing:
Thebottomclearancecanbereducedto20mm (3/4”).
Thefrontclearancecanbereducedto50mm (2”).
BOILER CONTROLS
BCDEFGA
M
i
n
i
C
2
4
MiniC28
MiniC32
MiniS24
MiniS28
A ApplianceOnlamp
BDomestichotwatertemperaturecontrol
CMainswitchandradiatortemperaturecontrol
DBoiler resetbutton
ELock--- outsignal lamp
FProgrammer(optional)
GSystempressureandtemperaturegauge
TOLIGHT THE BOILER
1Checkthat thevalveslocatedinthelowerpartoftheboiler
areopen.
2Switchthethe electricitysupplyon.
TheapplianceOnlampAwill flashevery4seconds
(stand---bycondition).
ForcombinationmodelsMiniC24,MiniC28 andMiniC32
3IftheboileristobeusedforCHandDHWpositionthe
mainswitchasinthefollowingillustration.
TheapplianceOnlampAwill flashevery2seconds
(operatingboiler).
CA
Forsystem modelsMiniS24 andMiniS28
4To operatetheboilerpositionthemainswitchasinthe
followingillustration.
TheapplianceOnlampAwill flashevery2seconds
(operatingboiler).
CA
All CORGI registered installers carry a CORGI ID card, and have a registration number. Both should be
recorded in your Benchmark Log Book. You can check your installer by calling CORGI direct on 01563 72300
THELOGBOOKSHOULDBECOMPLETEDAFTEREACHSERVICEANDKEPTWITHTHESEINSTRUCTIONS
Caradon Ideal Limited is a member of the Benchmark initiative and fully supports the aims of
the programme. Benchmark has been introduced to improve the standards of installation and
commissioning of central heating systems in the UK and to encourage the regular servicing of
all central heating systems to ensure safety and efficiency.

CONTROLOFCHTEMPERATURE
Theoutput temperatureofCHwaterisadjustablefroma
minimumofabout38°Ctoamaximumofabout85°Cby
turningtheknobC.
ApproxCHflowtemperaturesfortheboilerthermostat
settings:
Minimum(38 °C)
Maximum(85 °C)
C
CONTROLOFDHW TEMPERATURE
(MiniC24,MiniC28 andMiniC32)
ThetemperatureoftheDHWleavingtheboilercanbevaried
fromaminimumofabout35°Ctoamaximumofabout55°C
(withinthepowerlimitsoftheappliance)byturningthe
temperaturecontrolknobB.
Minimum(35 °C)
Maximum(55 °C)
B
AdjustmentoftheDHWtemperatureiscompletelyseparate
fromthatoftheCHcircuit.
Theadjustmentsystemintegratedwithintheboiler
automaticallycontrolstheflowofgastotheburnerinorderto
keepthetemperatureofDHWdeliveredconstant,between
thelimitsofmaximumandminimumoutput.
Wherethedemandisatalowlevelorwiththetemperature
set totheminimum,itisnormaltosee acycleoflightingand
extinguishingoftheburnerwhenrunning.
Adjustment
Itisadvisabletoadjust theDHWtemperaturetoalevel
commensuratewiththedemand,minimisingtheneedtomix
withcoldwater.Inthisway,theautomatic controlfacilitieswill
befullyexploited.
Moreover,wheretheamountoflimescalepresentinthewater
maybeparticularlygreat,notexceedingthepositionas
showninthefollowingillustration(about50 °C)minimises
annoyingincidencesofscaledepositsandclogging.
B
Inthesecases,however,itisadvisabletoinstall asmall water
treatmentdeviceorsoftener.Withsuchadeviceyoushould
avoid periodicdescaling.
Consequently,theDHWheatexchangerwill keepits
performanceconsistentforalongerperiodoftimewith
resulting gas savings.
TOSHUTDOWNTHE BOILER
Forshortperiods
Toturntheboileroff set thefunctionselectorCtotheO
position.
TheapplianceOnlampAwill flashevery4seconds.
Forlongperiods
Whenyoudonotexpect tousetheboilerforalongperiod:
1Switchthethe electricitysupplyoff.
2Shutoff thegas supplycockandthevalvesforthewater
circuitsfittedundertheboiler.
3Ifnecessary,emptythewatercircuits.
FROSTPROTECTION
MiniC24,MiniC28 andMiniC32 appliancesareprovided
withabuiltinanti---freezesystemthatoperatestheboiler
whenthetemperatureisbelow4°C
Therefore,whentheboilerisnotlitandusedincoldweather,
withconsequentriskof freezingdonotisolatetheboiler
fromthe electricitysupplyorclosethegasinletcock.
ESCAPEOFGAS
Shouldagasleakorfaultbesuspectedcontactyourlocal
gas supplierwithoutdelay.
Donotsearchforgasleakswithanakedflame.
CLEANING
Fornormalcleaningsimplydustwithadrycloth.
Toremovestubbornmarksandstainsuseadampclothand
mild detergent.
Donotuseabrasivecleaningmaterials.
MAINTENANCE
Theapplianceshould beservicedatleastonceayearbya
CORGIregisteredinstaller.
FAULTS
Noheatingorhotwater
Checkthatgasandelectricityareavailableat theboilerand
thatall switchesareon.
Checkthat thesystemwaterwaterpressuregaugeGreadsat
least0,5bar.
Checkthelock---outsignal lampE.Ifitisilluminated press the
boiler resetbuttonDtorestart theignitionsequence.
Hotwaterbutnoheating
Checkthat theprogrammerandroomthermostat(if fitted)are
bothcallingforheat.
Heatingbutnohotwater
Checkthatcoldwaterflowsoutofthetapsataminimumrate
of3.5litresperminute(or1pintin10 secondsorless).Ifnot,
lookforstopvalvesnotfullyopen.
Ifthesesimplechecksfailtosolvetheproblem,orthe
problemrecurs,consultyourservice engineer.

Points for Boiler User
Note. In line with our current warranty policy we would ask that you check through the following guide to
identify any problems external to the boiler prior to requesting a service engineers visit. Should the
problem be found to be other than with the appliance we reserve the right to levy a charge for the visit, or
for any pre-arranged visit where access is not gained by the engineer.
Troubleshooting – Typical Non Product Faults
Problem Solution
Boiler is not working for
central heating or hot water
•Is there power to the boiler i.e. is the left hand side green LED (A) alight and
flashing every 4 seconds. If not this is not a boiler fault – contact the installer
•Check pressure gauge on boiler shows a minimum of 1 bar
If not re-pressurise via the filling loop to 1 bar (if unsure contact your
installer), turn off the tap on the filling loop and press the reset button (D) to
reset the boiler. If unable to do so or if the pressure continues to drop after
filling then contact your installer
•Is the lockout signal lamp (E) alight – Press boiler reset button (D) – If boiler
still does not fire contact the installer
Boiler goes through ignition
sequence but will not fire for
either central heating or hot
water and then goes to
ignition lockout
•Check gas supply (try another gas appliance cooker/fire etc) If no gas
supply then this is not a boiler fault – Contact the gas supplier
Fan & pump run
continuously but there is no
attempt at ignition •Check that the air pressure switch test caps, on top of the boiler, are fitted
correctly.
Mini C Only
Operating for hot water but
will not operate for central
heating
•Check that integral programmer is set to an ‘on’ period and the function
switch is set to ‘auto’ – If it still does not operate contact your installer
•If fitted with an external programmer check that the central heating channel
is set at an ‘on’ period – If it still does not operate contact your installer.
•Check the room thermostat is set at the required temperature – Test the
room thermostat by turning fully up – If this does not respond contact your
installer
•Check the radiator temperature control (C) is set at the winter setting for
central heating.
The nature of all combination boilers is to heat up water directly from the incoming mains water supply directly
through the boiler to supply domestic hot water at the stated flow rates, (as shown in the boiler installation
instructions), to achieve a 35°C temperature rise. As the ambient temperature of the cold main varies during the
summer and winter months it is likely in the colder winter months that the flow rate will need to be reduced at the
outlet taps to achieve the same temperatures achieved in the warmer summer months. This is not a fault with the
appliance but is relevant to the varying temperature of the incoming cold mains water supply.
Mini S Only
Operating for hot water but
will not operate for central
heating
•If fitted with an external programmer check that the central heating channel
is set at an ‘on’ period – If it still does not operate contact your installer.
•Check the room thermostat is set at the required temperature – Test the
room thermostat by turning fully up – If this does not respond contact your
installer
Operating for central heating
but will not operate for hot
water
•If fitted with an external programmer check that the domestic hot water
channel is set at an ‘on’ period – If it still does not operate contact your
installer.
•Check the cylinder thermostat is set at the required temperature – Test the
cylinder thermostat by turning fully up – If this does not respond contact
your installer
Ideal Boilers, P.O. Box 103, National Ave, Kingston Upon Hull, HU5 4JN. Tel.
01482 492251 Fax. [phone]. Registration No. London 322 137.
Caradon Ideal Limited pursues a policy of continuing improvement in the design and
performance of its products. The right is therefore reserved to vary specification without notice.
Ideal Consumer Helpline
Tel: [phone]
www.idealboilers.com