Viessmann Vitodens 100-W B1KE-199 Combi Boiler, 199,000 BTU

The larger combination boiler in the Vitodens 100-W range, the B1KE-199 heats the home and produces on-demand domestic hot water from one wall-mounted cabinet. It modulates from 19.9 to 199 MBH at 95% AFUE and delivers up to 4.7 GPM at a 77°F rise.

Compared with the smaller B1KE model it adds input and hot water flow for bigger homes, with 1 in. NPT heating and domestic water connections and a 3/4 in. NPT gas connection. A stainless Inox-Radial heat exchanger, MatriX-Plus modulating burner and Lambda Pro Plus combustion control keep firing matched to demand, helped by a 10:1 turndown.

The boiler accepts natural gas or liquid propane, heats domestic water through an integrated plate heat exchanger to as high as 140°F, and connects to the ViCare app over built-in WiFi. A 3.5-inch color touchscreen sits on the unit. The cabinet is 17-3/4 in. W x 21-3/4 in. D x 39 in. H.

Highlights

• Space heating and on-demand hot water in one wall-hung appliance

• 19.9-199 MBH input, 10:1 turndown and 95% AFUE

• Up to 4.7 GPM continuous domestic hot water at a 77°F rise

• 187 MBH DOE heating capacity and 163 MBH net AHRI rating

• 1 in. NPT heating and DHW connections, 3/4 in. NPT gas

• Built-in WiFi with ViCare app support and a 3.5-inch touchscreen

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.