Carrier BWHAAG000150

Heating Only Modulating Gas Fired Water Boiler - Up to 95% AFUE

The BWC and BWH are gas fired, wall hung water boilers designed for easier, more flexible installations with extensive venting configurations, a built-in expansion tank, and an adaptive electronic combustion control that continually adjusts the gas valve for optimal combustion during installation and operation. These boilers also feature an impressive 7:1 turn down ratio, the option to adjust for propane or natural gas with a simple control selection, and a stainless steel heat exchanger, which allows for better heat transfer than a cast iron boiler. With an Annual Fuel Utilization Efficiency (AFUE) up to 95%, 120k and 150k Btu/h nominal input capacities, and heating only and combination models, these condensing boilers offer a great replacement for older equipment. The BWC and BWH modulating boilers are vented as direct vent (2-pipe) with over twenty options for venting configurations, including concentric terminations, using readily available PP, CPVC, and PVC (intake only) pipes. These compatible boilers can be used with radiators, baseboard heating, radiant flooring, and hydronic coils. ACC (Active Combustion Control) system automatically adjusts gas valve based on operating conditions, both at initial installation and continually during operation, to optimal combustion for functionality, efficiency, and low emissions.

Features:

• Modulating gas valve with 7:1 turn-down ratio

• Stainless steel heat exchanger

• Direct vent (2-pipe) with over 20 venting configuration options

• Compatible venting materials include PP, PVC (intake only), and CPVC

• Freeze protection feature senses low temperature conditions and circulates water to protect the boiler only (not heating system)

• Pre-wired wall plug to save labor costs

• Automatic by-pass internal to the boiler (recommended to also add by-pass in system piping)

• DHW inlet/outlet and 3-way valve circuit included for indirect-fire water heater (BWH models)

• Aquastat and thermistor control inputs (BWH models)

• Fill valve to fill boiler from DHW circuit during initial fill, and servicing (BWH models only)

• Automatic air separator with air purge cycle at power-up

• Auto-diagnostic function with burner lockout

• Low voltage connections are terminated external to the cabinet for convenience

• Combi boiler replaces water heater and supplies domestic hot water up to 4.2 GPM at a 72º F temperate rise (BWCAAG000150)

• Outdoor reset sensor included

• Internal low-water cutoff with pressure transducer

• Intuitive control with digital display