Wolf MGK-130 User manual

Document no. 3062881_0910 Subjecttotechnicalmodications
Operating instructions
Gas condensing boilers
MGK-130
MGK-170
MGK-210
MGK-250
MGK-300
GB
Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. [phone] · Fax [phone] · Internet: www.wolf-heiztechnik.de

23062881_0910
Contents
Contents..............................................................................................................................................Page
Warranty / General information .................................................................................................................. 2
Safetyinstructions ...................................................................................................................................... 3
Installationinformation/Maintenanceinformation ..................................................................................... 4
Waterconnectionsandgassupplyconnection .......................................................................................... 5
Controlunitoperation ................................................................................................................................. 6
Informationforenergyefcientoperation/Faults ................................................................................... 7-8
General information Gasisanenvironmentallyfriendlyfuelthatdoesnotrepresentanydanger
unlesshandledwithgrossnegligence.Yourgascondensingboilerisa
highgradeproductthatincorporatesthelatestsafetytechnology.
Warranty period Gascondensingboilersareguaranteedfor2years.
Warranty Our warranty is subject to the installation being carried out by a
recognised heating contractor and adherence to all operating and
installationinstructions.
These safety instructions should protect you from
potential risks.
• ImmediatelyswitchOFFtheemergencystopswitchof theheating
system(ifoutsidetheinstallationroom).
• Closethegasshut-offvalve.
• Incaseofre,useasuitablereextinguisher.
In case of risk of re
Non-observance of these references can lead to risks to
individuals and the risk of material losses.
Risk to life!

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3062881_0910
Safety instructions
Balanced ue routing Withlowoutsidetemperatures,thewatervapourcontainedintheuegas
maycondenseandfreezeonthebalancedue.This ice may fall from
the roof causing injury or material losses.Preventicefromfallingby
takingon-sitemeasures,e.g.theinstallationofasnowguard.
Caution - risk of injury!
Frost protection Theuseofantifreezeisnotpermissible.
Thecontrolunitprotectsthegascondensingboileragainstfrost.Therisk
offrostcannotbetotallyprevented,e.g.duringlongerpowerfailures.
Thereforeonlyinstallthegascondensingboilerinroomsthatarefree
fromtheriskoffrost.Shouldtherebeariskoffrostduringlongeridle
periods,e.g.whentheheatingsystemisswitchedoff,askyourlocal
heatingcontractortodraintheboilerandtheheatingsystemtoprevent
pipesfrombursting.
Caution - risk of water damage and malfunction through
freezing.
When changing a fuse - Isolatetheappliancefromthepowersupplypriortochangingafuse.
Themainsterminalsoftheboilerare'live'evenwhentheON/OFF
switchhasbeenswitchedOFF.
Caution - risk of electrocution!
If you smell ue gas - Shutdownthesystem.
- Openwindowsanddoors.
- Notifyyourlocalcontractor.
Caution - risk of poisoning!
- Donotoperateanylightswitch.
- Donotoperateanyelectricalswitches.
- Keepnakedamesaway.
- Closethegasshut-offvalve.
- Openwindowsanddoors.
- Notifyyourgassupplyutility;useatelephoneoutsideofthedanger
area.
Caution - risk of poisoning, suffocation and explosion!
If you smell gas
SAFETY INSTRUCTIONS

43062881_0910
Installation information /
Maintenance information
Care Cleanthecasingwithadampclothandmilddetergent.
Thecomponentsinsidethegascondensingboilermayonlybecleaned
byaheatingcontractor.
Corrosion protection Never use or store sprays, solvents, chlorinated cleaning agents,
paints, adhesives, etc. in the vicinity of the gas condensing boiler.
Underunfavourableconditions,thesematerialsmayleadtocorrosion
inthegascondensingboilerandtheuesystem.Ductedventsrouted
througharoofmayalsocontain corrosive vapours. For that reason,
maintainasufcientlylargedistancetotheair/uegasterminal(minimum
recommendation:5m).
NB - only the heating contractor offers the required
knowledge and expertise!
- Theuserisresponsibleforarrangingaregularserviceofthesystem,
inordertoensurethereliableandsafefunctionofthegascondensing
boiler.
- Yourgascondensingboilershouldbeservicedannually.
- Maintenanceisexplicitlydetailedintheinstallationinstructions.
- Isolatetheappliancefromthepowersupplybeforeanymaintenance
work.
- Afteraserviceandbeforethegascondensingboilerisreturnedinto
use,checkthatallcomponentsthatwereremovedformaintenance
havebeenrettedcorrectly.
- Werecommendyouarrangeamaintenancecontractwithanapproved
heatingcontractor.
Service
Positioning / modications - Your gas condensing boiler should only be installed and modied
byanapprovedheatingcontractor,asonlytheyhavetheessential
knowledgetocarryoutsuchwork.
- Nevermodifyuegascomponents.
- Never close or restrict the ventilation apertures in doors or walls
when operating the boiler in open ue mode; only start the boiler
when the ue has been fully installed.
- For operation in balanced ue mode, only take the appliance into
use if the balanced ue system has been fully installed and the
wind protector is not covered up.
- Thegascondensingboilermayonlybeinstalledinroomsthatare
protectedfromfrost.
- Never isolate the appliance from the power supply when outside
temperaturesfallbelowzero,otherwisethereisariskofthesystem
freezingup.
- Nevermodifythedrainorthesafetyvalve.
Caution - failure to observe this rule may lead to a risk of re
as well as a risk of destruction, poisoning or explosion!
Do not use or store explosive and/or ammable materials, e.g.
petrol, thinners, paints, paper etc. inside the boiler room!

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3062881_0910
Water connections and gas
supply connection
Checking the water level Regularly check the water level. The pressure gauge must indicate
between2.0and2.5bar.Yourheatingcontractorwillexplainhowtotop
upyoursystem.Donotsupplementyourheatingwaterwithadditives,
otherwisecomponentsmaybedamaged.
Filling the siphon Thesiphonmustbettedandlled.
Filling the system Connectawaterhosetotheboilerdrain&ll(BDF)valveandopenthe
mainswatertap.OpentheBDFvalvetoprovideamoderateowrateand
lltheheatingsystemtoapprox.1.5bar.Checkthewaterpressureatthe
pressuregauge.Ventthesystem.Theboilermustbetoppedup,since
heatingwaterwillonlyfullydeaerateafterseveralhours’heatingoperation.
Generallyleavethesystemfull-exceptwherethereisariskoffrost.
Theconnectionrequiredforllingbetweenthetapwaterandheating
watermustberemovedafterthe llhasbeencompleted.Otherwise
thereisariskthatyourtapwaterwillbecontaminatedbyheatingwater.
The appliance may overheat if it is operated without water.
Please observe before
commissioning
Dependingonyourspecicheatingsystem,thesafetyequipment
mustbetestedbyaheatingcontractor.
Theheatingsystemmustbecompletelylledwithwater.Subjecttothe
boileroutputandoperatingtemperatureoftheheatingsystem,thewater
qualityforheatingsystemsisregulatedbylocalregulationsgoverning
"Waterqualityinheatingsystemswithhotwaterboilers".
Observethesystempressure.Ifnecessarytopupwithwater.
Neveruseboilerwaterfordomesticuse.
Checkwhethertheventilationoftheboilerroomisensuredinaccordance
withlocalregulations.
Theairsupplytotheboilermustnotbeobstructed,otherwise
there is a risk of suffocation.
Neverpositionobjectsdirectlyontheboiler-maintainaminimum
clearance of 40 cm. Otherwise there is a high risk of re.
If necessary top up with water. When lling the heating system, the
shut-offvalvesmustbeopen.

63062881_0910
Control unit operation
Note: TheBMprogrammingmodulecanalsobeintegratedintothecontrolunit.
ThatmeansthatallsettingsaremadeattheMGK.Forinstallationand
operation,seetheBMprogrammingmoduleoperatinginstructions.
ON/OFF
switch
DHW
temperature
selector
Pressuregauge
Resetbutton
Heatingwater
temperatureselector
Illuminated
ring
Thermometer
Illuminated status indicator ring
Illuminated ring Explanation
Flashinggreen Standby(powersupplyON,burnerOFF,e.g.summermode)
Constantgreenlight Wintermode:Pumprunning,burnerOFF
Flashingyellow Emissionstestmode
Constantyellowlight BurneroperatingameON
Flashingred Fault
Summer mode (centralheatingOFF)
Winter mode Setting2to8
Emissionstestmode (indicatorringashesyellow)
DHWtemperatureselector 1(15°C)...9(65°C) 7(55°C)recommendation
Heatingwatertemperatureselector 2(20°C)...8(75°C)

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3062881_0910
Information for energy efcient operation
Heating mode Saving energy with modern heating technology: gas condensing
technology saves your cash
In conventional heating systems energy is expelled unused to the
atmosphere along with the ue gas. Modern condensing technology
utilisesthatenergyforheating.
Use as little electrical energy as possible
Operate your system with multi stage heating pumps at the lowest
requiredlevel.
Regular heating system maintenance pays for itself
A contaminated burner or poorly adjusted appliance can reduce the
heatingsystemefciency.Regularheatingsystemmaintenancethrough
yourlocalcontractorquicklypaysforitself.
Heating at the lowest energy level
Operateyourheatingsystem,wherepossible,withaowtemperature
oflessthan60°Coraatheatingcurve.
A heating system control unit also regulates your heating costs
Aheatingsysteminstandbymodesavesenergy.Withautomaticnight
setbackandthermostaticvalves,amodernweather-compensatedor
roomtemperature-dependentheatingsystemcontrolunitensuresthat
thesystemonlyoperateswhenheatisrequired,savingyoumoneythe
restofthetime.
- Equip your heating system with a weather-compensated heating
controllerfromtheWolfrangeofaccessories.Yourheatingcontractor
willbehappytoadviseyouhowtoachieveoptimumsettings.
- In conjunction with the Wolf control unit accessory, use the night
setback function to match the energy level to the actual demand
period.
- Usetheoptionalsummermodesetting.
Never overheat your system
Adjust the room temperature as accurately as possible. This leaves
occupants comfortable and energy is not wasted on providing
heatingoutputthatnobodyneeds.Youcandifferentiatebetweenthe
optimumtemperaturesforindividualrooms,suchaslivingroomsand
bedrooms.
Aroomtemperaturethatisonedegreehigherthannecessaryrepresents
anadditionalenergyconsumptionofapprox.6%.
- Useroomthermostatstomatchtheroomtemperaturetotheactual
useoftheroom.
- Inany roomwhere youhaveinstalled aroomtemperature sensor,
openthethermostaticvalvefully.Thisenablesyoutoachieveoptimum
controlcharacteristicsforyourheatingsystem.
Ensure adequate air circulation
Air must be able to circulate freely near the radiators and the room
temperaturesensors,otherwisetheheatingsystemwillloseworkless
effectively.Badlypositionedlongcurtainsorfurniture"swallow"upto
20%ofyourheat.

83062881_0910
Information for energy efcient operation /
Faults
Keep the heat inside the room - at night too
Atnight,closingshuttersanddrawingcurtainsnoticeablyreducesheat
lossesviathewindowareas.Insulatingtheradiatorrecessesandhaving
lightcolouredpaintworkcansaveupto4%offyourheatingbills.Airtight
jointsatwindowsanddoorsalsohelptokeepenergyinsidetheroom.
Minimise energy consumption through sensible ventilation
Ventilatingforhourslosesheatstoredinwallsandobjects.Asaresult,the
roomclimatewillonlybecomecomfortableagainafterprolongedheating.
Shortandthoroughventilationismoreeffectiveandpleasant.
Bleeding the radiators
Bleedtheradiatorsregularlyineveryroom.Thissafeguardstheperfect
functionofradiatorsandthermostats,particularlyintheupperapartments
ofapartmentblocks.Theradiator respondsquicklytochangingheat
demands.
Intelligent use of DHW circulation pumps
AlwayscontrolDHWcirculationpumpsviatimeswitches.Programthese
inaccordancewithyourDHWdemandpatterns.
The optimum DHW temperature
Only ever set the DHW temperature or that of the cylinder to the
temperatureyoureallyrequire.Anyadditionalheatingusesadditional
energy.
Sensible handling of DHW
Showeringconsumesonlyapprox.1/3ofthewatervolumerequiredfor
abath.Repairanydrippingtapsimmediately.
DHW mode
Keep your operating instructions safe in an easily accessible place near your gas condensing boiler.
Faults / Fault codes Ifthestatusindicatorringashesred, where possible read the fault
codeontheconnectedcontrolunitaccessoryandnotethecode.The
appliancecanbereturnedintousebypressingtheresetbutton.Incase
of repeated faults, shut down the appliance and notify your heating
contractor.
Gas condensing boilers are equipped with an electronic ue gas
temperaturelimiter.Theapplianceautomaticallyshutsdownwhenthe
uegastemperatureexceeds110°C.Theboilerrestartswhenthereset
buttonispressed.Ifthisrecurs,askyourheatingcontractortocheck
theuesystem.
NB - risk of damage, poisoning and suffocation work less
effectively.