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Electronic Temperature Control
Fan Assisted Combustion
Sealed Combustion Chamber
ASME Copper Finned Tube Heat Exchanger
Gasketless Heat Exchanger Design
Pump Relay with Delay
Down Stream Test Valve
Referenced Gas Valves
Loch-Heat Ceramic Tile Combustion Chamber
Hot Surface Ignition
Adjustable High Limit with Manual Reset
50 PSI ASME Pressure Relief Valve
Temperature and Pressure Gauge
Flow Switch
24 Volt Control System
BMS Terminal Strip
Combustion Air Filter
Freeze Protection
81% Thermal Efficiency
Electronic Temperature Control
Fan Assisted Combustion
Sealed Combustion Chamber
Gasketless Heat Exchanger Design
Pump Relay with Delay
Down Stream Test Valve
Referenced Gas Valve
Loch-Heat Ceramic Tile Combustion Chamber
Adjustable High Limit with Manual Reset
Temperature and Pressure Gauge
50 PSI ASME Pressure Relief Valve
Flow Switch
24 Volt Control System
BMS Terminal Strip
Combustion Air Filter
Freeze Protection
81% Thermal Efficiency
Electronic Temperature Control
Fan Assisted Combustion
Sealed Combustion Chamber
Gasketless Heat Exchanger Design
Pump Relay with Delay
Down Stream Test Valve
Referenced Gas Valve
Loch-Heat Ceramic Tile Combustion Chamber
Adjustable High Limit with Manual Reset
Temperature and Pressure Gauge
50 PSI ASME Pressure Relief Valve
Flow Switch
24 Volt Control System
BMS Terminal Strip
Combustion Air Filter
Freeze Protection
91% AFUE efficient
Durable cast iron primary heat exchanger
Condensing stainless steel secondary heat exchanger
Unique 7 pass heat exchanger design maximizes heat transfer
Vents with PVC
Multiple ventilation options (direct vent, direct exhaust, concentric)
Easy conversion to propane
Maximum Heat Exchanger performance
Reliable Boiler Design
Proven Control Strategy
Smart Circulator Strategy
Full product line to satisfy every application
Every residential gas boiler is hydrostatically tested to ASME standards and test fired
Backed by Weil-McLain quality and a warranty that provides peace of mind
Unrivaled technical and field sales support
Over a 130 year proud history and North Americas leading boiler manufacturer
Exceeds Energy Star requirements with 91% efficiency
Boiler sections made from recycled metals
Lower emission levels than most boilers
Energy Star® Rated
Built-In Draft Diverter
ASME Copper Finned Tube Heat Exchanger
Gasketless Heat Exchanger Design
All Bronze Circulating Pump
Pump Delay/Freeze Protection
Remote Tank Thermostat
Glass-Lined Water Surfaces
Loch-Heat Ceramic Tile Combustion Chamber
ASME Temperature and Pressure Relief Valve
Manual Reset High Limit
Automatic Reset High Limit
CSA Design Certified for Alcove Installation
CSA Design Certified for Installation on Combustible Floors
3 Year Limited Warranty on Heat Exchanger
Electronic Temperature Control
Fan Assisted Combustion
Sealed Combustion Chamber
Stainless Steel Burners
Low NOx Operation
ASME Copper Finned Tube Heat Exchanger
Gasketless Heat Exchanger Design
All Bronze Circulating Pump
Pump Delay with Freeze Protection
Remote Tank Thermostat
Glass-Lined Water Surfaces
Referenced Gas Valves
Loch-Heat Ceramic Tile Combustion Chamber
Adjustable High Limit with Manual Reset
Flow Switch
Combustion Air Filter
5 Year Limited Warranty on Heat Exchanger
Compact, floor-standing gas condensing boiler from 19-199 MBH
High efficiency of 95% AFUE on all models
Vitocrossal Pocket Design with wide water passage ways allow for system/full flow applications
No dedicated boiler pump required and eliminates primary/secondary piping
Matrix dome gas burner with 5:1 turndown ratio to ensure high efficiency and extremely clean combustion
High water volume extends burner run time and reduces cycling
A self-calibrating Lambda Pro combustion management system ensures optimal combustion efficiency at all times regardless of gas/air quality
Simple commissioning with no field adjustments and adjusts to all fuel types
Durable, reliable and long service life with Inox-Crossal stainless steel heat exchanger and high mass design
Multiple venting options and configurations with vent lengths up to 198 foot
Multi-boiler installation with 8 boilers up to 1592 MBH
Compact, floor-standing gas condensing boiler from 19-199 MBH
High efficiency of 95% AFUE on all models
High temperature operation of up to 90 Deg C (194 Deg F)
Vitocrossal Pocket Design with wide water passage ways allow for system/full flow applications
No dedicated boiler pump required and eliminates primary/secondary piping
MatriX dome gas burner with 5:1 turndown ratio to ensure high efficiency and extremely clean combustion
High water volume extends burner run time and reduces cycling
A self-calibrating Lambda Pro combustion management system ensures optimal combustion efficiency at all times regardless of gas/air quality
Simple commissioning with no field adjustments and adjusts to all fuel types (NG and LPG)
Durable, reliable and long service life with Inox-Crossal stainless steel heat exchanger and high mass design
Multiple venting options and configurations with vent lengths up to 198 foot
Multi-boiler installation with 8 boilers up to 1592 MBH
Energy Star® Rated
Limited Lifetime Warranty