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· Class-Leading High Efficiency Wall Mount Boiler

· Durable Stainless Steel Fire Tube Heat Exchanger

· Streamlined Design Configurable for Installation

Water Sealed CombustionNAT’L or LPMBH: 70, 110 & 155

Quality you trust.

Flexibility you want.

Value you deserve.

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Rating of 95% or Higher for Annual Fuel Utilization Efficiency

Among the Highest AFUE rated residential boilers

•ExceedsEnergyStarrequirements •At95%efficient,eligiblefortaxcreditsandrebates* Optional accessories to match virtually any installation

•Lowwatercutoff(probestyle)withtestbutton •Paintablepolypropylenesidewallventtermination •2”&3”concentricventtermination-foronepenetrationthroughthesidewallorroof •Condensateneutralizer-tohelpprotectenvironmentandhomedrainline

Easy-to-use control with LCD display

•LargeLCDdisplaymakessystemsetupandnavigationsimple •Navigatediagnosticinformationwithsimplepushbuttons •Quicksetupforheatanddomestichotwaterpriority •Displaycanbemountedontheboiler,orwall(upto2’away)

Designed for easy maintenance and service of common parts

•Componentspositionedforfastandeasyserviceofthegasvalve,blower,heatexchanger,andcontrolmodule •Removablecontrolterminalblockssavetimemakingelectricalconnections,whileeliminatingpotentialfieldwiringerrors •Watertreatment-chooseamongourcleaner,inhibitorand antifreezeproducts

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*Checkyourlocalareafordetailsandcurrentrebateamounts

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Why Weil-McLain...

•Fullproductlinetosatisfyeveryapplication•EveryresidentialgasboilerishydrostaticallytestedtoASMEstandardsandtestfired•BackedbyWeil-McLainqualityandawarrantythatprovidespeaceofmind•Unrivaledtechnicalandfieldsalessupport•Overa130yearproudhistoryandNorthAmerica’sleadingboilermanufacturer

ECO Components Designedtooptimizeoperationresultinginsignificantfuelsavings.

Top Quality Heat Exchanger

Durablestainlesssteelfiretubeheatexchanger •High-gradestainlesssteeldesignwithlowpressuredrop•Uniquedimpletubedesignachieveshighefficiencies•Corrosionresistantpolypropylenecondensatecollectionbase

1 IgnitionElectrode/FlameSensor

2 Venturi

3 Blower

4 AirInletSilencer

5 StainlessSteelHeatExchanger

6 BoilerSupplyConnection

7 BoilerReturnConnection

8 GasValvew/FlexPiping

9 VentConnection

10 AirConnection

70/110 model shown

6

7

8

9 10

1

23

4

5

Sidewall Direct Vent

Multiple Venting Options:

Intheinterestofcontinualimprovementsinproductandperformance,Weil-McLainreservestherighttochangespecificationwithoutnotice.

C-1170(0513)

Through-the-roof Vent

1 Boiler supply tapping: 1" NPT2 Boiler return tapping: 1" NPT3 Control display with navigation buttons4 Electrical entrance openings5 Vent connection: 3" PVC6 Gas connection7 Condensate trap nozzle8 Air connection: 3" PVC

*NaturalgasfieldconvertibletoLPasstandardequipment

Model Supply Tapping

In.

Return Tapping

In.

Gas Connection

Size In.

Minimum Recommended Pipe Size In.

Approx. Shipping

Weight (lbs)

ECO70 1 1 1/2 1 117

ECO110 1 1 1/2 1 117

ECO155 11/4 11/4 1/2 11/4 130

Model* InputMBH

Max Min

DOEHeating Capacity

MBH

Net I=B=RWater

Ratings MBH

DOE Seasonal Efficiency

AFUE%

Vent Diameter Inches

Vent Material

Boiler Water

Content Gal.

ECO70 7014 65 57 95.2 3 PVC,CPVC,PP,SS 2.5

ECO110 11022 101 88 95.0 3 PVC,CPVC,PP,SS 2.5

ECO155 15528 143 124 95.1 3 PVC,CPVC,PP,SS 3.2

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39"

Weil-McLain,999McClintockDr.,BurrRidge,IL60527|www.weil-mclain.com

Optional Boiler Stand

STANDARD EQUIPMENT BOILER• StainlessSteelHeatExchanger• 30PSIASMEReliefValve• DrainValve• StainlessSteelBurner • DirectSparkIgnition• VariableSpeedBlowerAssembly• VenturiMixingSystemwithAirSilencer• NegativePressureRegulatedGasValve• 50VATransformer• DualScaleTemp.&PressureGauge• OutletWaterTemp.Sensor• InletWaterTemp.Sensor• FlueGasTemp.Sensor• OutdoorTemp.Sensor• SentinelX100InhibitorandTestKit

CONTROL MODULE• 3.5”LCDDisplay• CentralHeatCirculatorControl • DHWCirculatorControlw/Priority• IgnitionControl• HighLimit&ModulatingTemp.Control• OutdoorReset• FreezeProtection• CirculatorExcercising

COMPLETE JACKET ASSEMBLY WITH• FullyRemovableJacketFrontDoor• MountingBracket• CondensateTrap• PropaneConversionOrifice

OPTIONAL EQUIPMENT• ConcentricVentKit• CondensateNeutralizerKit• LowWaterCut-offKit• SidwallVent/AirTerminationKit• BoilerStandKit• MaintenanceKits