Wolf MGK-130 Specifiche tecniche
Maintenance instructions
Gas condensing boilers
MGK-130
MGK-170
MGK-210
MGK-250
MGK-300
Document no. 3062882_0910 Subjecttotechnicalmodications GB
Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. +49 8751/74-0 · Fax +49 8751/741600 · Internet: www.wolf-heiztechnik.de
2 3062882_0910
Contents
Contents ............................................................................................................................................................... Page
Safetyinstructions ....................................................................................................................................................3-4
Maintenanceprocedure............................................................................................................................................5-7
MaintenanceprocedureMGK-130 .........................................................................................................................8-10
MaintenanceprocedureMGK-170/210/250/300 ..................................................................................................11-12
Check/maintenance,componentsMGK-130toMGK-300 ...................................................................................13-17
Neutralisingsystem&siphon ...............................................................................................................................18-20
Maintenanceprocedure,nalising........................................................................................................................21-23
Function check ..........................................................................................................................................................24
Listofrequiredparts..................................................................................................................................................25
Overviewofthestepstobetakenandmaintenancereport .................................................................................26-27
Installation,non-returnvalvefortheMGK-130(whenreplacingthefan) .............................................................28-30
33062882_0910
The following symbols and references are used
in conjunction with these important instructions
concerning personal safety, as well as operational
reliability.
"Safety instructions" are instructions with
which you must comply exactly, to prevent
risks and injuries to individuals and material
losses.
Danger from 'live' electrical components!
NB: Switch OFF the ON/OFF switch
before removing the casing.
Never touch electrical components or
contacts when the ON/OFF switch is in
the ON position! This results in a risk of
electrocution that may lead to injury or
death.
The main supply terminals are 'live' even
when the ON/OFF switch is in the OFF
position.
Parts of boilers can get very hot;
consequently there is a risk of serious
burns.
Therefore allow to cool down prior to
installation work.
This requires an action.
Visual check.
Safety instructions
Fig.:Terminalbox:
Dangerfromelectricalvoltage.
Fig.:Ignitiontransformer,highvoltageignition
electrode,ionisationelectrode,heatexchanger
Dangerfrom'live'electricalcomponents,riskof
burningthroughhotcomponents.
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Safety instructions
Maintenance work must only be carried out
by a qualied heating contractor.
Regular maintenance and the exclusive use
of original Wolf spare parts are of crucial
importance to the trouble-free operation
and long service life of your appliance.
We therefore recommend you arrange a
maintenance contract with a local heating
contractor.
General information
Fig.:Gas connection: Escaping gas may cause
poisoningortheriskofexplosion.
"NB" indicates technical instructions that
youmustobservetopreventmateriallosses
and malfunctions on the boiler.
NB
Fig.:Gascombinationvalve.
Dangerfromelectricalvoltage.
Escaping gas may cause poisoning or an
explosion.
MGK-170/210/250/300 MGK-130
53062882_0910
Maintenance procedure
OFF
OFF
OFF
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Maintenance procedure
Allowtocooldownfor1hour.
2x
5 mm
1x
73062882_0910
Maintenance procedure
4x
3 mm
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Maintenance procedure MGK-130
Fig.:Undoallelectricalconnectionsatthefanandthe
ignitiontransformer.
Fig.:Undothescrewsbetweenthefanandthe
mixingchamber.
13 mm
13 mm
4x
93062882_0910
Maintenance procedure MGK-130
Fig.:Removetheunitcomprisingburnerangeandfan.
6 mm
13 mm
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Maintenance procedure MGK-130
Gasket,burnerangegasket.
Fig.:Visualcheck,non-returnvalve.
+
Checkthatthenon-returnvalveoperatesfreely.
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