Specifications include, but are not limited to: Provide factory-packaged type boiler, burner units for hot water heating units arranged for automatic firing with natural gas. Each unit shall include an external/internal (choice) , header type boiler, insulated metal jacket, pre- engineered combustion system consisting of a special horizontal gas/oil burner with forced draft wind box, refractory type combustion chamber and precut block insulation, factory wired NEMA 1 control panel for combustion programming and flame failure protection, integral draft inducer and all operating and limit controls in accordance with CSD-1. Each unit shall be provided with all castings, fittings, accessories and appurtenances necessary for assembly, connection and operation, including safety/relief valves, water column type pump control and lower water cutoff with precut piping and necessary fittings, prefabricated return yoke together with gauges and instruments as hereinafter described. Boiler/Burner package shall be a standard product of the manufacturer.
