Post on 14-Mar-2020
NEW High Efficiency Gas Fired, Stainless Steel, Condensing Combi Boiler
VALUE-PRICED WITH PREMIUM FEATURES
• 95%AFUEwith10:1turndown–NEW!
• Reliable,provenstainlesssteel heatexchangertechnology
• Flatplateheatexchangerprovides superbdomestichotwaterperformance
• Factorypre-setSage2.3™ControlSystem, providingout-of-the-boxhighperformance
• Touchscreendiagnosticdisplaywith plain-languageguidance
• FREE5-yearpartswarrantyincluded
• LowNOx*
EXTRA BUILT-IN FEATURES
• Universalboilerventconnectionfor polypropylene,CPVC/PVC,&flexible stainlesssteel• Outdoorresetandsensor
• Pre-installedsafetyreliefvalvepiping
ANYWHEREUNMATCHED
ANYWHEREUNMATCHED
MADE IN U.S.A.
*MeetsrequirementsofSouthCoastRule1146.2
©2017U.S.BoilerCompany,Inc.Lancaster,PAPhone:1-888-432-8887
FormNo.USBL1708220m
www.usboiler.net
K2 Combi: Technical Information ASM
E
H
K2 Combi Ratings & Specifications
Model AFUE
%
HeatingInput
(MBH)min-max
DOE HeatingCapacity(MBH)
Net AHRI
(MBH)
DHW RatesVent Size(In.)
Net Wt.
(lbs.)
at 70° TR
(GPM)
at 77° TR
(GPM)
Input(MBH)
min-maxK2WTC-135B 95.0 12-120 112 97 3.3 3.0 12-135 3 109K2WTC-180B 95.0 18-180 169 147 4.5 4.1 18-180 3 126
Standard Equipment • Directvent,10:1turndown,sealedcombustion appliance• Stainlesssteelheatexchanger• Pre-installedcirculatorandDHW3-wayvalve• DHWflatplateheatexchangerinsidejacket• Sage2.3ControlSystem –LCDtouchscreendisplay –Self-guidedcontrolmenus –Built-inselfdiagnostics –Additionalcirculatoroutputavailable –Outdoorresetincludingoutsidesensor –DHWpriority –Warmweathershutdown• Variablespeedcombustionblower• Gasvalve• Polypropylenecondensatetrap• Flowswitch,pre-installed• Supply,return,&autoresethighlimitwater sensors• Universalexhaustventconnection (CPVC/PVC,PP,SS)• Fluegastemp.sensor&differentialpressureswitch• Pre-installedhangingbracketandwallmountkit
SafetyReliefValvePressure,Water–30PSIstd.ASMEcertified“H”.MaximumAllowableWorkingPressureat30PSI,Maxallowabletemperaturesetting210ºF.Targetsetpointis180°F,manualresethighlimitsetpointis210°F.Boilersshippedsetfornaturalgas.Aboveperformanceisforelevationsto2000’.ConsultInstallation,Operating,andServiceInstructionsforinstallationsupto10,100’andforadditionalimportantnotesanddetails.
Typical Venting Configurations (Horizontal and Vertical–up to 135 eq.ft.)
Horizontal2-pipelowprofile
Horizontal2-pipeconcentric
Illustrationsareforrepresentationonly.Forcompleteventinginformation,pleaseseeInstallation,Operating,andServiceInstructions.
Vertical2-pipe
Vertical2-pipeconcentric
Horizontal2-pipe
Hybrid
Verticalexhaust/sealedB-ventforcombustionair
Optional Equipment:• Naturalgas;LPconversionkitforelevationsto 2000’soldseparately: (135BP/N:107874-01,180BP/N:107875-01)• SageZoneControl (CirculatorPanelP/N:104590-01) (ValvePanelP/N104589-01)• Servicepartskit(P/N:106260-03)• Kit,CPVCstarterandPVCventterminations (2”P/N:107039-01,3”P/N:107039-02)
PLUS polypropylene & stainless steel chimney chase options
C
A
17”
Vent Connection
Relief Valve
Temperature/PressureGauge (inside cabinet)
Air IntakeConnection
Access Door
Boiler SupplyWater Connection
Boiler ReturnWater Connection
Domestic Hot Water OutletDomestic Cold Water Outlet
Gas ConnectionCondensate Trap Cleanout
30”
Outside of Wall
Inside of Wall
Model(s) “A” dimension
K2WTC-135B 15”
K2WTC-180B 19”