Modulating Gas fired water boiler for indoor installation. They are approved for closet or alcove installations. For use with natural or liquefied petroleum (LP/Propane) fuel gases. Wall mounted. All boilers are factory assembled with controls, wiring, and test-fired to ensure dependable performance. The boiler shall be certified for Direct Vent applications only.

• Wall mount bracket, mounting hardware, and actual size Wall Mount Template
• The boiler has a dedicated connection to an optional Indirect hot water tank and an internal automatic 3-way diverting valve to allow Domestic Hot Water Priority operation. 
• The boiler includes a factory-installed and wired 2-speed circulator pump.
• Factory provided primary/secondary Labor Savor™ manifold.
• Factory provided built-in Low Water Cutoff via Pressure Switch. 

Digital Boiler Control: 

• Control is Self Commissioning, which automatically recognizes fuel type (Natural or LP gas). 
• Control monitors flame signal and automatically adjusts the gas valve during operation for optimum combustion and maximum efficiency. 
• The Control system is a PCB integral controller with an LCD digital/graphical display. 
• Control can sense and display water temperature and indicate when the boiler is in central heating or domestic water mode. 
• Control can accept an optional Outdoor Air sensor with field-adjustable reset curves.
• The control displays Error Codes and Diagnostic information. X Control can accept 0-10V input to manage the heating set-point or heating power level. 

Boiler Combustion System: 

• The Gas valve is a modulating valve capable of firing from 75,000 BTU input down to 16,600 BTU input in Heat mode (4.5:1 turn down). 
• The induced draft blower is variable speed controlled by the PCB. 
• The burner is constructed of Iron-Chromium stainless steel. 
• The ignition system shall incorporate a Direct Spark Igniter and a separate Flame Sensing rod.

Heat Exchanger: 

• The boiler’s primary heat exchanger is constructed of Iron-Chromium stainless steel. 

Electrical 

• 120 volts AC, 60 Hertz, 1-phase; less than 15 amps. 
• Factory-wired 3-foot appliance cord with a male plug end. 
• Low voltage terminal strip for Thermostat, Outdoor Air Sensor, and Indirect Tank sensor. 

Warranty 

• Factory Standard Warranty is 10 years on the heat exchanger and one year on the parts. 
• Warranty is extended to 10 years on heat exchanger, two years parts plus two years labor upon online warranty registration and completion of contractor registration. 

Optional Equipment 

• Outdoor Air Sensor Kit 
• Indirect Tank Sensor Kit 
• Coaxial and Two-pipe venting components