Ataq Q 25S User manual

O p e r a t i n g i n s t r u c t i o n s
8G.52.4001/12.10 Changes reserved
Boiler G.CNo
Q25S 41-310-08
Q38S 41-310-09
Q51S 41-310-10
Q60S 41-310-11
Q25C 47-310-10
Q38C 47-310-11
Q51C 47-310-12
CE PIN 0063BQ3021

2
OperatinginstructionsATAGQ-Series
Content
Introduction........................................................ 3
Safety................................................................ 4
Descriptionoftheboiler..................................... 5
Explanationofthefunctionkeysanddisplay..... 7
TheResetkey................................................... 7
Theboilerdisplay.............................................. 8
Waterpressureinthecentralheatingsystem... 9
Replenishingthecentralheating..................... 10
Turningtheboileroff........................................ 12
Error,maintenanceandwarranty.................... 13
Adjustments..................................................... 14
Important!
It is in your own interest that we should know that you have an ATAG
boiler. Please ll out the warranty card completely and send it back to
us. Then we can be fully at your service.

3
OperatinginstructionsATAGQ-Series
These operating instructions describe the func-
tioningandtheoperatingoftheATAGQboilers.
This manual is for the end user. For installation
andservicingthereisaninstallation&servicing
instructionsmanualfortheinstaller.
Readthismanualfullybeforeoperatingtheboiler.
Incaseofdoubtorerrorscontactyourinstaller.
ATAG Heating reserves the right to change the
specicationsanddimensionswithoutpriornotice.
Workontheboilermustbecarriedoutbyacom-
petent person, (Ref: Gas Safe Register) using
correctlycalibratedinstrumentswithcurrenttest
certication.
WhenreplacingpartsuseonlyATAGServiceparts.
ContactdetailsforATAGHeatingUKLtdcanbe
foundonthebackpageofthismanual.
Introduction

4
OperatinginstructionsATAGQ-Series
The Benchmark Scheme
ATAG Heating UK Ltd is a licensed member of
theBenchmarkSchemewhichaimstoimprove
thestandardsofinstallationandcommissioning
ofdomesticheatingandhotwatersystemsinthe
UKandtoencourageregularservicingtooptimise
safety,efciencyandperformance.
Benchmark is managed and promoted by the
HeatingandHotwaterIndustryCouncil.Formore
informationvisitwww.centralheating.co.uk
Pleaseensurethattheinstallerhasfullycomple-
tedtheBenchmarkChecklistontheinsideback
pagesoftheinstallationinstructionssuppliedwith
theproductandthatyouhavesignedittosaythat
youhavereceivedafullandclearexplanationof
its operation. The installer is legally required to
completeacommissioningchecklistasameans
ofcomplyingwiththeappropriateBuildingRegu-
lations(EnglandandWales).
All installations must be notied to Local Area
BuildingControleitherdirectlyorthroughaCom-
petentPersonsScheme.ABuildingRegulations
ComplianceCerticatewillthenbeissuedtothe
customerwhoshould,onreceipt,writetheNoti-
cationNumberontheBenchmarkChecklist.
Thisproductshouldbeservicedregularlytoopti-
miseitssafety,efciencyandperformance.The
service engineer should complete the relevant
ServiceRecordontheBenchmarkChecklistafter
eachservice.
TheBenchmarkChecklistmayberequiredinthe
event of any warranty work and as supporting
documentation relating to home improvements
in the optional documents section of the Home
InformationPack.“

5
OperatinginstructionsATAGQ-Series
In case you smell gas:
- Nonakedames!Donotsmoke!
- Donotoperateelectricalswitchesforlightsor
anyotherappliance.
- Donotuseatelephone
- Turnoffgassupplyatmeter
- Openwindowsanddoors
- Notifyanypersonsinthebuildingandleave
thebuildingatonce.
- CallGascompanyorinstalleronlywhenout-
sidethebuilding
Protection for corrosion
Donotuseanysprays,chlorinecontainingagents,
solvents,paint etc. around the boiler or around
theairintakesupplyentranceoftheboiler.These
substanceshavenegativeinuencesontheboiler
and can lead to corrosion resulting in failure of
theboiler.
Checking the water pressure
Checkthewaterpressureinthecentralheating
installationregularly.
Useonlypotablewaterforlling.
AdditivesonlyafterclearancebyATAG.
Contactyourinstallerincaseofdoubt.
Safety

6
OperatinginstructionsATAGQ-Series
TheATAGQboilerisaroomsealed,condensing
andmodulatingcentralheatingboiler,withorwit-
houtanintegratedhotwaterfacility.
The boiler is provided with a compact stainless
steel heat exchanger with smooth tubes.A well
thoughtoutprincipalusingdurablematerials.
Theboilerburnsgasforsupplyingwarmth.The
heatistransferredintheheatexchangertothewa-
terinthecentralheatingsystem.Bycoolingdown
theuegassescondensateisformed.Thisresults
inhighefciency.Thecondensate,whichhasno
effectontheheatexchangerandthefunctionof
theboiler,isdrainedthroughaninternalsiphon.
Theboiler is provided with anintelligentcontrol
system(CMSControlManagementSystem).The
boileranticipatestheheatdemandofthecentral
heatingsystemorthehotwaterfacility.
Whenanoutsidesensorisconnectedtotheboiler,
theboilerworksweatherdependantly.Thismeans
thattheboilercontrolmeasurestheoutsidetem-
peratureandowtemperature.Withthisdatathe
boilercalculatestheoptimalowtemperaturefor
theinstallation.
Description of the boiler
Room sealed boiler
The boiler retreives its com-
bustion air from outside
then discharges the ue
gasses to the outside.
Condensing
Retrieves heat from
the ue gasses. Water
condensates on the heat
exchanger.
Modulating
Higher or lower burning
according to the heat
demand.
Stainless steel
Super solid kind of steel
which keeps its quality for
life. It will not rust or erode
in contrast to composition
materials, like aluminium.

7
OperatinginstructionsATAGQ-Series
Theefciencyoftheboileris veryhighand the
radiationconvectionandstandbylossesverylow.
Theemissionofnoxioussubstancesisfarbelow
thexedstandardssotheboilermeetstherequi-
rementsofSEDBUKClassA.
WhentheboilerisconnectedtoanATAGBrainQa
lotofinformationcanberetrievedfromtheboiler.
FormoreinformationabouttheATAGthermostats.
Pleaserefertotheusermanuals.
Ontheleftsideoftheboilerthereisasmalldoor.
Through the transparent part you can see the
boiler status on the display. After opening this
dooryouwillndthefunctionkeys.Ontheright
sideofthedooryouwillndaninstructioncardin
asleevewithanexplanationofthedisplaymes-
sagesandfunctionkeys.Thisisalsodescribedin
thefollowingpages.
ATAGBrainQ
ExampleSEDBUKClassA

8
OperatinginstructionsATAGQ-Series
 On/offkeyCentralheating.
When 'on' the indication L.E.D. is illuminated.
 On/offkeyDomestichotwater(DHW)
When 'on' the indication L.E.D. is illuminated.
 On/ofkeyPumpprogramm.Continuouslyyes/no
When 'on' the indication L.E.D. is illuminated.
 Inmostsituationsthepumpcanstayinposition'off'.
During severe frost It is possible (when there is no outside
sensor connected), to choose manually to let the circulation
pump circulate continually thus reducing the chance of freezing
pipes (garage, attic or other cold spaces / rooms) which are
sensitive to frost.
Explanation of the function keys and display
The control panel is provided with a reset key.
Whenafaultoccursitwillbeshownbytheashing
E(Error)withanumbercodeafterwhichtheboiler
isshutdown.Afterpressingtheresetkeyyoucan
trytostarttheboileragain.Iftheerrormessage
keepsoccurringcontactyourinstaller.
The Reset key
Central heating
on/off
Domestic Hot water
on/off
Pump programm
on/off
Reset key
Unlockingtheboiler
Display
Mode key
Selecting chapters
(Store)
Step key
Scrolling
Indication L.E.D.'s
When the pump is switched
on continuously it can lead
to undesired heating up of
the central heating system
during the summer.

9
OperatinginstructionsATAGQ-Series
The boiler display
Thereadingoftheboilerdisplaycanbedoneintwoways.
The Good reading
During this reading the display will only show
whatisnecessary.Undernormalcircumstances
thedisplaywillgiveaGoodreading.Ifafault
isdetectedtheboilerwillbeblocked.Thiswillbe
shownwith,alternatedisplayofGood, withanE
ofErrororaBL ofBlockingandanumbercode.
Forfurtherinformationrefertopage13"Errors,
maintenanceandwarranty".
The technical reading
Duringthisreadingthedisplaywillshowinwhich
operatingstatustheboilerisactive.Thetechni-
cal reading is shown alternately with the water
pressure.Therstgureinthetechnicalreadout
indicatesthestatusinwhichtheboilerisactive
andthethirdandfourthgureindicatethewater
temperature of the boiler.  For example in the
readingP 1.9thecharacterPstandsforpres-
sure which represents the water pressure. The
thirdandfourthgureindicatethewaterpressure
inbar.
Ifafaultisfound,thesameisshownasdescribed
under"TheGoodreading".
SelectingtheTechnicalorGood reading.
- PresstheStepkeyfor5seconds.
The display will change from the Good reading to
the technical reading or vice versa.

10
OperatinginstructionsATAGQ-Series
Water pressure in the central heating system
Theinstallationwillfunctionoptimallywithawater
pressureofbetween1,5and1,7bar.
Ifthewaterpressuredropsbelow1bar,thedisplay
will show FILL. During this message the boiler
will remain functioning at a reduced level.After
replenishing the system just above 1,5 bar the
message FILLwilldisappearandtheboilerwill
functionnormallyagain.
Whenthewaterpressuredropsbelow0,7bar,the
displaywillshowaashingFILLtext.
Theboilerwillshutdownandwillfunctionnormally
againafterreplenishingthesystemtojustabove
1,5bar.
Toretreivethewaterpressureonthedisplayfrom
theGood reading:
- PresstheStepkeyoncebriey.
The water pressure will be shown.
PresstheStepkeybrieytoreturntotheGood
reading.
Message ' Water pressure
too low' on your ATAG
thermostat.
On the display of the
ATAG Brain Q a low water
pressure can be indicated.
For further information
see the relevant user
manual.

11
OperatinginstructionsATAGQ-Series
Replenishing the central heating system
Thecentralheatinginstallationneedstobelledwithpotable(drinking)wa-
ter.Fortoppinguptheinstallationyouusethellingloopaccordingtothe
followingprocedure:
(Ifinanydoubtpleasecontactyourdealer)
1. Switchallfunctionsoff(heating,DHWandpump);
2. Brieypushthe'STEP'-button:Px.x=waterpressureinbar;
3. Slowlyopenthellingloop(Indicationondisplayincreases);
4. Fillupslowlyto1.5to1.7bar;
5. STOPappearsonthedisplay;
6. Closethellingloop;
7. De-aeratethecompleteinstallation,startatthelowestpoint;
8. Checkthewaterpressureandifnecessarytopitup;
9. Closethellingloop;
10.Activatefunctionsrequired(heating ,DHW and/orpump );
11.IfAxxappearsonthedisplay,waitfor17minutes;
12.Checkthewaterpressureandifnecessarytopitupto1,5to1,7bar
13.Closethellingloop;
14.Pressthe‘STEP’-button;
15.Besurethatthellingloopisclosed.
Afterthe automatic de-aeration programm(Axx) is nished theboilerwill
returntotheGood readingorTechnicalreading.

12
OperatinginstructionsATAGQ-Series
Holiday period:
Adjustthethermostattotheholidayperiod.See
theuserthermostatmanual.Thehotwaterfacility
canbeswitchedoffbymeansoftheprogramkey
onthecontrolpanel.
Re-setting the central heating system:
Switch off the three program keys , , 
when these are activated.Switch off the power
supply.  When the boiler is being drained one
shouldtakeintoaccountthatapartoftheheating
waterwillremainintheboiler.Whenriskoffrost
arises one should take care that the remaining
centralheatingwaterintheboilerdoesnotfreeze.
The boiler will not function directly. The automatic de-aeration programm of about
17 minutes will start after one of the three programm keys is pressed. The display
will show where A stand s for Automatic de-aeration programm Active
and the number on the right indicates the actual water temperature of the boiler.
Checkthewaterpressureregularlyandtopuptheinstallationwhenneces-
sary.
Theworkingpressureoftheinstallationshouldbebetween1.5and1.7bar
It can take a while before all air has dis-appeared from a lled installation. Es-
pecially in the rst week noises can be heard which indicate the presence of air.
The automatic air vent in the boiler will make this air disappear, which means the
water pressure will reduce during this period and therefore topping up with water
will be necessary to adjust the ow water temperature
Turning the boiler off
Holiday
The ATAG BrainQ room
thermostaat is provided
with a holiday programm.
The holiday period can be
adjusted on the thermostat
itself. The central heating
and DHW supply are swit-
ched off during that period.
There is also the option
that only the central hea-
ting is switched off. With
all of these possibilities the
frost protection system is
active.

13
OperatinginstructionsATAGQ-Series
Error, maintenance and warranty
If a fault is detected the boiler will be blocked.
Thiswillbereected,byanalternatedisplayof
Good, withanEofErrororaBL ofBlockingand
anumbercode.
YoucantrytoresettheboilerbypressingtheReset
keyonce.Iftheproblemremainspleasecontact
yourinstallerandinformthemaboutthefaultand
givethemthenumbercode.
Ifyoudiscoveranyleaksfromtheboilercontact
yourinstaller.
Weadviseyoutoobtainaservicecontractwith
your installer for regular maintance and adjust-
menttokeepyour boilersafe andin goodcon-
dition.
The casing of the boiler consists of metal and
plasticpartswhichcanbecleanedwithanormal
nonabrasivecleaningagent.
Youcanndthewarrantyconditionsinthewar-
rantycardwhichissuppliedwiththeboiler.

14
OperatinginstructionsATAGQ-Series
Adjustments
Theboilerhasalargenumberofsettingsoptions.
Weadviseyoutocontactyourinstallerforadjus-
tingtheboilertotherequiredsettings.
Adjusting the ow water temperature (CH)
- PresstheModekeybriey
 (fromtheTechnicalreading).
The display will show PARA .
- PresstheStepkeyonce.
The display will show 1 85 .
- Pressthe+orthe-keytoaltertheadjustments,
ifnecessary.
- PresstheStorekeytoconrmthesetting.
The display will ash once.
- PresstheModekeybriey.
The display will show StbY for a short while
and will return to the Technical reading.
The ow water temperature that has been adjusted only applies to the central
heating and is independent of the hot water facility for the cylinder.

15
OperatinginstructionsATAGQ-Series
Selection Type of installation Flow water
temperature
01 Radiators; air heating; convectors 85°C
02 Radiators with large surface areas or under floor heating as
additional heating 70°C
03 Under floor heating with radiators as additional heating 60°C
04 full under floor heating 50°C
= factory setting
Adjusting the type of installation
Theboiler isdesigned insuch away thatitwill
adjust itself automatically to what is necessary
foranormalheatingsystem.Insomecasesthe
installationmayhaveconvectorsorcompleteun-
deroorheating.
Onecaneasilychooseheatinginstallationadjust-
mentsappropriateforthesystemsuchasmaxi-
mumwater-owtemperatureorforthewarmingup
oftheinstallationafteranightperiod.Adjustment
goesasfollows:
- Press(fromtheTechnical)readingtheMode
keyonce;
- PresstheStepkeytwice;
The display will show 2 01.
- Press the + or the - key to alter the type of
installationaccordingtothetablebelow;
- PresstheStorekeytoconrmthesetting;
The display will ash once.
- PresstheModekeyonce;
The display will show StbY for a short while
and will return to the Technical reading.
+
Store
Mode
Step
Reset
-
When a type of installation has been chosen with a low water-ow temperature it
is possible that in case of a severe winter period the temperature of the heating
system will need to be increased slightly. In such situations the installation choice
may need to be changed, so that a higher ow temperature can be chosen. This
adjustment would normally be carried out by your installer during the installation
and commissioning.

Thisrenewedpublicationcancelsallpreviousinstallationinstructions.Thecompanyreservestherighttochangethespecicationsanddimensionswithoutpriornotice.
ATAG Heating UK Ltd. • Unit 3 • Beaver Trade Park • Quarry Lane • Chichester • West Sussex • PO19 8NY
Phone: [phone] • Fax [phone] • E-mail: [e-mail] • Internet: www.atagheating.co.uk
E.&O.E.