Viessmann Vitodens 200-W B2HE-199 Condensing Boiler, 199,000 BTU

A wall-mounted gas condensing boiler for hydronic heating in larger homes, firing anywhere from 14 to 199 MBH at 95% AFUE. The B2HE-199 pairs a stainless Inox-Radial heat exchanger with integrated WiFi and a 7-inch color touchscreen, and it can feed an indirect tank for domestic hot water.

The MatriX-Plus burner modulates with load while Lambda Pro combustion management adapts to gas type and quality, keeping combustion clean across the firing range. Maximum heating output is 187 MBH, and efficiency can climb to 98% at full modulation under the right conditions. The cabinet also houses an integrated variable-speed pump, and the controls support outdoor reset and multiple heating circuits.

The cabinet is 17-3/4 in. W x 21-3/4 in. D x 39 in. H and weighs 179 lb. Supply and return connections are 1 in. male NPT, the gas connection is 3/4 in. NPT, and the electrical supply is 120V, 60 Hz. Venting can be direct-vent or room-air dependent, and the maximum operating pressure is 60 psi.

Highlights

• 14-199 MBH input range with 187 MBH maximum heating output

• 95% AFUE, up to 98% efficiency at full modulation in suitable conditions

• 7-inch color touchscreen, built-in WiFi, outdoor reset and multi-circuit control

• Integrated variable-speed pump inside the cabinet

• Connects to an indirect storage tank for domestic hot water

• Direct-vent or room-air dependent venting options

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.