Time proven cast iron design for durability and reliability

Optimum venting flexibility for homes with existing chimneys

Industry standard tapping locations, allows easy, direct replacement for thousands of existing boiler installations

Solid, reliable, American-made cast iron heat exchanger, designed to promote turbulent water flow within the section for efficient heat transfer

Consists of the Intelligent Hydronic Control and IQ Option Panel

Intuitive self-diagnostics

Combines high limit, 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 Deg or above) in the heating system before firing the boiler

Enables the easy plug and play installation of optional features such as outdoor reset, LWCO and high limit

Limited Lifetime Warranty

Time proven cast iron design for durability and reliability

Optimum venting flexibility for homes with existing chimneys

Industry standard tapping locations, allows easy, direct replacement for thousands of existing boiler installations

Solid, reliable, American-made cast iron heat exchanger, designed to promote turbulent water flow within the section for efficient heat transfer

Consists of the Intelligent Hydronic Control and IQ Option Panel

Intuitive self-diagnostics

Combines high limit, 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 Deg or above) in the heating system before firing the boiler

Enables the easy plug and play installation of optional features such as outdoor reset, LWCO and high limit

Limited Lifetime Warranty

Time proven cast iron design for durability and reliability

Optimum venting flexibility for homes with existing chimneys

Industry standard tapping locations, allows easy, direct replacement for thousands of existing boiler installations

Solid, reliable, American-made cast iron heat exchanger, designed to promote turbulent water flow within the section for efficient heat transfer

Consists of the Intelligent Hydronic Control and IQ Option Panel

Intuitive self-diagnostics

Combines high limit, 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 Deg or above) in the heating system before firing the boiler

Enables the easy plug and play installation of optional features such as outdoor reset, LWCO and high limit

Limited Lifetime Warranty

Time proven cast iron design for durability and reliability

Optimum venting flexibility for homes with existing chimneys

Industry standard tapping locations, allows easy, direct replacement for thousands of existing boiler installations

Solid, reliable, American-made cast iron heat exchanger, designed to promote turbulent water flow within the section for efficient heat transfer

Consists of the Intelligent Hydronic Control and IQ Option Panel

Intuitive self-diagnostics

Combines high limit, 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 Deg or above) in the heating system before firing the boiler

Enables the easy plug and play installation of optional features such as outdoor reset, LWCO and high limit

Limited Lifetime Warranty

Time proven cast iron design for durability and reliability

Optimum venting flexibility for homes with existing chimneys

Industry standard tapping locations, allows easy, direct replacement for thousands of existing boiler installations

Solid, reliable, American-made cast iron heat exchanger, designed to promote turbulent water flow within the section for efficient heat transfer

Consists of the Intelligent Hydronic Control and IQ Option Panel

Intuitive self-diagnostics

Combines high limit, 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 Deg or above) in the heating system before firing the boiler

Enables the easy plug and play installation of optional features such as outdoor reset, LWCO and high limit

Limited Lifetime Warranty

Time proven cast iron design for durability and reliability

Optimum venting flexibility for homes with existing chimneys

Industry standard tapping locations, allows easy, direct replacement for thousands of existing boiler installations

Solid, reliable, American-made cast iron heat exchanger, designed to promote turbulent water flow within the section for efficient heat transfer

Consists of the Intelligent Hydronic Control and IQ Option Panel

Intuitive self-diagnostics

Combines high limit, 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 Deg or above) in the heating system before firing the boiler

Enables the easy plug and play installation of optional features such as outdoor reset, LWCO and high limit

Limited Lifetime Warranty

Selectable DHWP

Selectable/adjustable DHWP protection

Selectable/adjustable boost feature

Simple adjustment of reset curve

High Limit Set point-The High Limit becomes the upper limit for the operating set point

The operating set point can not be set higher than this value

The High Limit is set to protect the boiler and hydronic system from excessive temperature

DHW Set point-The Operating Set point is set to the DHW Set point when the Control or Outdoor Reset Option Card DHW input is energized

This set point is set equal to the Indirect Water Heater manufacturer's recommended water temperature

High Boiler Water Temperature-The High Boiler Water Temperature (also known as the "Boiler Water Design Temperature") set point is set to the lowest boiler water temperature that will heat the home on the home's design day

This adjustment typically depends on the type and quantity radiation (heating element) installed in the home