Wolf CGB-75 - Page 9

93062555_201804
3. Standardsandregulations
GascondensingboilerCGB-...
Gas condensing boiler to DIN EN 437 / DIN EN 13203-1 /
DIN EN 15502-1 / DIN EN 15502-2-1 / DIN EN 60335-1 /
DIN EN 60335-2-102 / DIN EN 62233 / DIN EN 61000-3-2 /
DIN EN 61000-3-3 / DIN EN 55014-1, as well as 92/42/
EWG (Efciency Directive) / 2016/426/EU (GasApplianc-
es Directive) / 2014/30/EU (EMC Directive) / 2014/35/
EU (Low Voltage Directive) / 2009/125/EG (ErP Directive) /
2011/65/EU (RoHS-Richtlinie) /Regulation (EU) 811/2013 /
Regulation (EU) 813/2013, with electronic ignition and elec-
tronicue gastemperature monitoring,for lowtemperature
heatingandDHWheatinginheatingsystemswithowtemper-
atures up to 90°C and 3 bar permissible operating pressure in
accordance with DIN EN 12828. This WOLF gas condensing
boiler is also approved for installation in garages.
Open ue gas condensing boilers must only
beinstalledinaroomwhichcomplieswiththe
appropriateventilationrequirements.Otherwise
there is a risk of asphyxiation or poisoning.
Readtheinstallationandmaintenanceinstruc-
tionsbeforeinstallingtheboiler.Alsotakeinto
considerationalltechnicalinformation.
WhenoperatingtheboilerwithLPG useonly
propaneaccording to DIN 51 622,otherwise
faults may arise when starting and operating
thegascondensingboiler,whichmayleadto
damagetotheapplianceandpersonalinjury.
 ApoorlyventedLPGtankcanleadtoproblems
withignition.Insuchacase,contactthecom-
panythatllstheLPGtank.
Theadjustablecylinderwatertemperaturecan
exceed60°C.Forshorttermoperation above
60°Ctheboilermustbemonitoredinorderto
prevent scalding. For continuous operation,
appropriate precautions should be taken to
preventdraw-offtemperaturesabove60°C,e.g.
thermostaticvalves.
Fig.: Wolf gas condensing boiler
Toprotectagainstscaling,theDHWtemperatureshould
besettomax.50°Cifthetotalwaterhardnessis15°dH
(2.5 mol/m³) or above. Without an accessoryregulator,
thiscorrespondstoamaximumhotwaterrotaryselector
settingof6.Withatotalhardnessof20°dHorhigher,use
ofawatertreatmentfacilityinthecoldwatersupplyline
whenheatingDHWisnecessaryinordertoextendthe
maintenanceintervals.
Failuretotakesuchprecautionswillresultinpremature
scalingoftheapplianceandareductionintheconvenient
availabilityofdomestichotwater.Thecontractorrespon-
sibleshouldalwayscheckthelocalconditions.