Weil-McLain’s newest, premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec is also available in a combi version, generating hot water output up to 5.4 GPM, making it the first premium residential combi from the biggest name in boilers.

• Heat only sizes: 80, 110, 150 , 199 MBH

• Combi sizes: 110,150,199 MBH (up to 5.4 GPM)

• Wall or floor base mounting options

• Stainless steel firetube heat exchanger design

• Unity 2.0 control with color touch screen

 OPTIONAL EQUIPMENT

•  Easy Up manifold
• Isolation flush valves (for combi)
  
• Paintable sidewall vent termination
  
• 2” & 3” concentric vent terminations
  
• Low water cutoff w/manual reset & test button
  
• Condensate neutralizer
  
• Water treatment and test kit
  
• Maintenance kit
  
• Parts kit
  
• Propane conversion kit
•  System sensors
• Boiler pedestal kit 

Weil-McLain’s newest, premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec is also available in a combi version, generating hot water output up to 5.4 GPM, making it the first premium residential combi from the biggest name in boilers.

• Heat only sizes: 80, 110, 150 , 199 MBH

• Combi sizes: 110,150,199 MBH (up to 5.4 GPM)

• Wall or floor base mounting options

• Stainless steel firetube heat exchanger design

• Unity 2.0 control with color touch screen

 OPTIONAL EQUIPMENT

•  Easy Up manifold
• Isolation flush valves (for combi)
  
• Paintable sidewall vent termination
  
• 2” & 3” concentric vent terminations
  
• Low water cutoff w/manual reset & test button
  
• Condensate neutralizer
  
• Water treatment and test kit
  
• Maintenance kit
  
• Parts kit
  
• Propane conversion kit
•  System sensors
• Boiler pedestal kit 

Weil-McLain’s newest, premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec is also available in a combi version, generating hot water output up to 5.4 GPM, making it the first premium residential combi from the biggest name in boilers.

• Heat only sizes: 80, 110, 150 , 199 MBH

• Combi sizes: 110,150,199 MBH (up to 5.4 GPM)

• Wall or floor base mounting options

• Stainless steel firetube heat exchanger design

• Unity 2.0 control with color touch screen

 OPTIONAL EQUIPMENT

•  Easy Up manifold
• Isolation flush valves (for combi)
  
• Paintable sidewall vent termination
  
• 2” & 3” concentric vent terminations
  
• Low water cutoff w/manual reset & test button
  
• Condensate neutralizer
  
• Water treatment and test kit
  
• Maintenance kit
  
• Parts kit
  
• Propane conversion kit
•  System sensors
• Boiler pedestal kit 

Weil-McLain’s newest, premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec is also available in a combi version, generating hot water output up to 5.4 GPM, making it the first premium residential combi from the biggest name in boilers.

• Heat only sizes: 80, 110, 150 , 199 MBH

• Combi sizes: 110,150,199 MBH (up to 5.4 GPM)

• Wall or floor base mounting options

• Stainless steel firetube heat exchanger design

• Unity 2.0 control with color touch screen
 
 OPTIONAL EQUIPMENT

•  Easy Up manifold
• Isolation flush valves (for combi)
  
• Paintable sidewall vent termination
  
• 2” & 3” concentric vent terminations
  
• Low water cutoff w/manual reset & test button
  
• Condensate neutralizer
  
• Water treatment and test kit
  
• Maintenance kit
  
• Parts kit
  
• Propane conversion kit
•  System sensors
• Boiler pedestal kit 

Weil-McLain’s newest, premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec is also available in a combi version, generating hot water output up to 5.4 GPM, making it the first premium residential combi from the biggest name in boilers.

• Heat only sizes: 80, 110, 150 , 199 MBH

• Combi sizes: 110,150,199 MBH (up to 5.4 GPM)

• Wall or floor base mounting options

• Stainless steel firetube heat exchanger design

• Unity 2.0 control with color touch screen
OPTIONAL EQUIPMENT

•  Easy Up manifold
• Isolation flush valves (for combi)
  
• Paintable sidewall vent termination
  
• 2” & 3” concentric vent terminations
  
• Low water cutoff w/manual reset & test button
  
• Condensate neutralizer
  
• Water treatment and test kit
  
• Maintenance kit
  
• Parts kit
  
• Propane conversion kit
•  System sensors
• Boiler pedestal kit 

Weil-McLain’s newest, premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec is also available in a combi version, generating hot water output up to 5.4 GPM, making it the first premium residential combi from the biggest name in boilers.

• Heat only sizes: 80, 110, 150 , 199 MBH

• Combi sizes: 110,150,199 MBH (up to 5.4 GPM)

• Wall or floor base mounting options

• Stainless steel firetube heat exchanger design

• Unity 2.0 control with color touch screen
 
OPTIONAL EQUIPMENT

•  Easy Up manifold
• Isolation flush valves (for combi)
  
• Paintable sidewall vent termination
  
• 2” & 3” concentric vent terminations
  
• Low water cutoff w/manual reset & test button
  
• Condensate neutralizer
  
• Water treatment and test kit
  
• Maintenance kit
  
• Parts kit
  
• Propane conversion kit
•  System sensors
• Boiler pedestal kit 
  

Weil-McLain’s newest, premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec is also available in a combi version, generating hot water output up to 5.4 GPM, making it the first premium residential combi from the biggest name in boilers.

• Heat only sizes: 80, 110, 150 , 199 MBH

• Combi sizes: 110,150,199 MBH (up to 5.4 GPM)

• Wall or floor base mounting options

• Stainless steel firetube heat exchanger design

• Unity 2.0 control with color touch screen

 OPTIONAL EQUIPMENT

•  Easy Up manifold
• Isolation flush valves (for combi)
  
• Paintable sidewall vent termination
  
• 2” & 3” concentric vent terminations
  
• Low water cutoff w/manual reset & test button
  
• Condensate neutralizer
  
• Water treatment and test kit
  
• Maintenance kit
  
• Parts kit
  
• Propane conversion kit
•  System sensors
• Boiler pedestal kit 

• Factory assembled section block
• Insulated extended jacket
• Horizontal to vertical draft hood
• Automatic vent damper included
• Combination gas valve for 24 volt
• Non-linting pilot burner
• Stainless steel burners
• Electrical junction box
• Spill switch
• Roll-out thermal fuse element
• 40 VA transformer
• Syphon
• 15 psi ASME relief valve, boiler sections tested for 15 psi working pressure
• Steam pressure gauge
• High limit pressure control
• Intermittent electronic ignition system with Weil-McLain UCM universal ignition control module
• Low water cut-off electrode type
• 1/2" gas connection
• 1-1/4" forced water supply and return, 2-1/2" steam riser and header, 1-1/2" steam equalizer
• Gauge cocks and glass
• Steam boiler are factory assembled and fire tested

• Factory tested
• Easy service
• Factory-assembled cast iron section with built-in air separator assembly, including aluminized steel flue collector, swing-away burner mounting door, with refractory blanket and recessed target wall in combustion chamber
• Low draft loss
• Top access cleanout cover
• Plug-in wiring harness
• High efficiency flame-retention oil burner
• Flame retention head design
• Solenoid valve
• PSC motor
• Solid state igniter
• Rear flue outlet
• Insulated heavy gauge steel jacket
• High limit control with circulator relay
• 15 psig ASME relief valve
• Drain valve
• Barometric damper
• Siphon
• Gauge glass and guard assembly
• Pressure gauge
• Probe low water cut-off
• 7" flue connection size
• Limited lifetime warranty on heat exchanger, 3 year limited warranty on parts

williamson -thermoflo osb-4-p-s3

• Factory assembled section block
• Insulated extended jacket
• Horizontal to vertical draft hood
• Automatic vent damper included
• Combination gas valve for 24 volt
• Non-linting pilot burner
• Stainless steel burners
• Electrical junction box
• Spill switch
• Roll-out thermal fuse element
• 40 VA transformer
• Syphon
• 15 psi ASME relief valve, boiler sections tested for 15 psi working pressure
• Steam pressure gauge
• High limit pressure control
• Intermittent electronic ignition system with Weil-McLain UCM universal ignition control module
• Low water cut-off electrode type
• 1/2" gas connection
• 1-1/4" forced water supply and return, 2-1/2" steam riser and header, 1-1/2" steam equalizer
• Gauge cocks and glass
• Steam boiler are factory assembled and fire tested

• Designed to operate in low temperature condensing applications
• Outdoor reset and domestic hot water priority
• Modulates with 5:1 turn-down ratio
• High grade stainless steel burner features quiet operation
• U-Control gives the power for easy set-up and maintenance, multiple set-up and zone options, system sensing recognizes system and outdoor temperatures, temperature management for up to three different set-points, control multiple boilers from a single control panel, standard screen messages provide service alerts and maintenance reminders
• 30 psi ASME relief valve
• Drain valve
• Stainless steel burner (80, 105) with woven steel fiber mesh (155, 230, 299 and 399)
• Variable speed blower assembly, Venturi mixing system with air silencer, negative pressure regulated gas valve, 50 VA transformer
• Dual scale temperature and pressure gauge, outlet water temperature sensor, inlet water temperature sensor, flue gas temperature sensor, outdoor temperature sensor
• System water temperature sensors, fully removable jacket front, adjustable boiler legs, on/off power switch, condensate trap with drain tee assembly, propane conversion orifice (all except model 80), water treatment - inhibitor and test kit
• Control module - 3.5" LCD display, 3-boiler priorities with multiple preset system configurations, color-coded removable terminal blocks, multiple boiler functionality, alarm control functionality, ignition control, high limit and modulating temperature control, low water protection, outdoor reset, ability to control any combination of 3 circulators
• PVC/CPVC/PP vent material
• 1-1/2" minimum recommended pipe size
• 1-1/4 and 1-1/2" flanges (399) taco 0013 boiler circulators