New Yorker CGS40-CNIH Cast Iron Steam Boiler, 105,000 BTU, Natural Gas

The New Yorker CGS40-CNIH (CGS40ANI-ME2) is a compact gas-fired steam boiler in the 105,000 BTU class for homes heated by cast-iron radiators. It runs on natural gas, reaches 82% AFUE and vents by natural draft to a chimney.

Input is 103,000 BTU/h with a DOE heating capacity of 84,000 BTU/h and a Net IBR rating of 63,000 BTU/h, about 263 sq. ft. EDR, which fits typical small to mid-size homes. Cast-iron sections with metal section connectors and an insulated jacket form the heat exchanger, and intermittent electronic ignition with a factory vent damper cuts standby losses.

A draft diverter is integrated in the jacket, and the recommended minimum chimney is 5 in. in diameter and 15 ft tall, matching the 5 in. flue collar. Piping uses 2 in. steam supply and return tappings and a 1/2 in. NPT gas connection, with a 16 in. wide cabinet. Water content is 6.5 gal, 5.0 gal of it steamable. An LP conversion kit can be used at elevations up to 2,000 ft.

Highlights

• 103,000 BTU/h input; 84,000 BTU/h DOE heating capacity

• 82% AFUE with electronic ignition and factory vent damper

• Cast-iron sections joined by metal section connectors

• Probe-type LWCO, pressure limit control and 15 psi safety valve

• LP conversion kit for use up to 2,000 ft elevation

Specifications

Good to know

• Gas-fired appliance: it must be installed, vented and commissioned by a qualified installer in line with local codes and the manufacturer's installation manual.