New Yorker CGS70-CNIH 7-Section Steam Boiler, 210,000 BTU, Natural Gas

The New Yorker CGS70-CNIH (CGS 70 ANI-ME 2) is a 7-section cast-iron gas steam boiler in the 210,000 BTU class. Designed as a replacement for existing steam systems in typical mid-size homes, it runs on natural gas at 82.1% AFUE.

Input is 207,000 BTU/h with 171,000 BTU/h DOE heating capacity and a Net IBR rating of 128,000 BTU/h, about 533 sq. ft. EDR. The heat exchanger is built from heavy cast-iron sections joined by metal section connectors for long steam service. Intermittent electronic ignition and a factory vent damper limit standby losses, and protection comes from a probe-type LWCO, a 15 psi safety valve, a pressure limit control and blocked-vent and rollout switches.

This natural-draft Category I unit has an integrated draft diverter and a 7 in. flue collar; the recommended minimum chimney is 7 in. by 15 ft. Connections are 2 in. steam supply and return plus 3/4 in. NPT gas. Water capacity is 10.7 gal, electrical service is 120 V, 60 Hz, 15 A fused, and an LP kit permits propane use up to 2,000 ft.

Highlights

• Input 207,000 BTU/h; Net IBR rating 128,000 BTU/h (533 sq. ft. EDR)

• 82.1% AFUE with electronic ignition and factory vent damper

• 7 cast-iron sections with metal section connectors

• 7 in. flue collar for Category I chimney venting

• LP conversion kit for elevations up to 2,000 ft

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.