Viessmann Vitodens 200-W B2HA-285 Condensing Boiler, 285,000 BTU

A high-output wall-mounted gas condensing boiler for large homes and light commercial hydronic systems. The B2HA-285 modulates from 71 to 285 MBH at 92% AFUE, giving floor-standing boiler capacity in a cabinet that hangs on the wall.

Heat transfer runs through a stainless steel Inox-Radial heat exchanger, and the MatriX cylinder burner modulates while Lambda Pro combustion management adjusts for changes in gas quality. The Vitotronic 200 control adds outdoor reset and diagnostics. Up to eight B2HA boilers can be staged together in a cascade for bigger loads, and the unit can supply domestic hot water through a compatible indirect tank.

It burns natural gas or liquid propane and offers several venting configurations. The cabinet is 19 in. W x 21 in. D x 43-1/2 in. H and weighs 194 lb, with 1-1/2 in. NPT heating connections, a 1 in. NPT gas connection, a 120V, 60 Hz supply and a 60 psi maximum operating pressure.

Highlights

• 71-285 MBH input range with a 226 MBH net AHRI rating

• 92% AFUE condensing operation with a stainless Inox-Radial heat exchanger

• Vitotronic 200 control with outdoor reset and diagnostics

• Cascade up to eight boilers for larger heating loads

• 1-1/2 in. NPT heating and 1 in. NPT gas connections

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.