We installed a Crown Aruba 5 Series (AWR) residential cast iron hot water boiler, designed for efficient and reliable performance. This atmospheric, gas-fired boiler is compatible with natural or LP gas and features a rear draft diverter, allowing for a compact, low-profile design—ideal for tight spaces and closet applications up to model AWR210B. Equipped with a Honeywell Integrated Boiler Control System, the Aruba 5 streamlines temperature control, circulator, and ignition functions, while also incorporating a Low Water Cut-Off for added safety. The control system includes an extra circulator output, providing flexibility for a second heating zone or integration with an indirect water heater like the Mega-Stor II. With front-access controls and supply/return tappings on both the left and right sides, this unit offers versatile installation options, ensuring an efficient and space-saving setup.