Viessmann Vitodens 200-W 80,000 BTU Gas Fired Wall Mounted Condensing Boiler - 7722778

Level Up To Smart, Quiet Heat With The Viessmann Vitodens 200‑W B2HE‑85 | 80,000 BTU Wall‑Hung Condensing Boiler (7722778)

Want premium comfort without the floor‑space footprint? The Vitodens 200‑W B2HE‑85 is a heating‑only, wall‑mounted gas condensing boiler that pairs a proven Inox‑Radial stainless steel heat exchanger and MatriX‑Plus burner with smart controls. It delivers up to 95% AFUE, a wide 8.5–85 MBH input range, and an industry‑leading up to 14:1 turndown for steady comfort and lower fuel use. A built‑in 7" color touchscreen, onboard WiFi and the ViCare app make everyday operation simple.

• Brand: Viessmann
• MPN: 7722778 (Vitodens 200‑W B2HE‑85, Heating‑Only)
• Type: Wall‑Mounted, Gas‑Fired Condensing Hydronic Boiler (Heating‑Only)
• Fuel: Natural Gas or LP (switch in software; no conversion kit)
• Input Range: 8,500–85,000 BTU/h
• Net AHRI (Water): 70,000 BTU/h
• AFUE: 95%
• Turndown Ratio: Up to 14:1
• Heat Exchanger: Inox‑Radial stainless steel
• Burner: Stainless MatriX‑Plus cylinder burner with Lambda Pro/Pro Plus combustion control
• Controls: 7" color touchscreen, outdoor reset, built‑in WiFi (ViCare app)
• Pump: High‑efficiency ECM boiler circulator (included)
• Max Operating Pressure: 45 psi
• Venting (Coaxial): 80/125 mm concentric
• Venting (Two‑Pipe): 3" PP/CPVC with long‑run capability (layout dependent)
• Heating Connections: 3/4" NPT supply & return
• Gas Connection: 3/4" NPT
• Condensate Drain: 3/4"
• Electrical: 120V, 60 Hz, 1‑phase
• Dimensions (W × D × H): 17‑3/4" × 19‑3/4" × 33‑3/4"
• Weight: ~108 lb
• Emissions: < 20 ppm NOx (at 3% O₂)
• Warranty: Limited lifetime heat exchanger (residential; see terms)

High Efficiency, Lower Fuel Use

With 95% AFUE and up to a 14:1 turndown, the Vitodens 200‑W matches output to your home’s demand—reducing short‑cycling and helping cut gas bills while keeping rooms consistently comfortable.

Smart, Clean Combustion

Viessmann’s MatriX‑Plus burner with Lambda Pro/Pro Plus automatically tunes combustion for gas quality, vent length, and altitude—delivering quiet operation and low NOx performance.

Quiet, Space‑Saving Wall Mount

A slim 17‑3/4"‑wide cabinet and front‑access components simplify installs and annual service. Zero‑clearance design makes it easier to fit tight mechanical rooms.

Flexible Venting For Tricky Layouts

Choose 80/125 mm concentric or 3" two‑pipe venting with generous equivalent lengths (configuration‑dependent), so you can route flue and intake through a sidewall or roof to suit the space.

Ready For Indirect Hot Water & Multi‑Zone Control

Pair the heating‑only B2HE‑85 with a Vitocell or other indirect tank for abundant domestic hot water. The onboard control supports outdoor reset and can coordinate multiple heating circuits with the right accessories.