Crown Boiler’s OC system is a control option for its Aruba 4 and Freeport 2 boilers. This control is designed to simplify the installation, operation and service of the boiler system and save energy. It launches with three plug-in OC cards to control different boiler functions. These cards plug into the OC panel to make up the system, which then fits onto the boiler. The three cards provide functionality for outdoor air reset, low-water cutoff and high-limit reset.

Crown Boiler. www.crownboiler.com