Series 3 Data Sheet

Series 3
™
Gas Fired,
Chimney Vented,
Cast Iron Water Boiler
• 84%AFUE
• Electronicignition
• EquippedwithIQControlSystem™
• 70–280MBH(7sizes)
• Industrystandardtappinglocations,allows 
 easy,directreplacementforthousandsof  
 existingboilerinstallations
• Solid,reliable,American-madecastironheat
 exchangercanacceptreturnwatertempsas 
 lowas110°F
• Lifetimelimitedwarranty
• ConsistsoftheIntelligent
HydronicControland 
IQOptionPanel
Intelligent Hydronic Control
• Combinesaquastat,relay,andignitionfunctionsinto
asinglemodule
• Twocustomizableintegratedswitchingrelaysfor
easyadditionofadditionalheatingzoneorindirect
waterheater
• Energysaving“thermalpurge”,whichworksby
circulatingresidualwarmwater(140°orabove)in
theheatingsystembeforefiringtheboiler
IQ Option Panel
• Enablestheeasyplug&play
installationofoptionalfeatures
suchasoutdoorreset,LWCO,
andhighlimit
Optional Touchscreen
• LCDdisplaysallboilersettings,
diagnostics,andtroubleshooting
insentences,notcodes
boiler
control
option
panel
option
card
control
system