Viessmann 7722779 Vitodens 200-W B2HE-120 High Efficiency Hydronic Boiler

Power Your Home With Viessmann 7722779 Vitodens 200-W B2HE-120 120 MBH High-Efficiency Hydronic Boiler

Need reliable, quiet heat with lower fuel bills? The Vitodens 200-W B2HE-120 is a wall-mounted gas-fired condensing boiler that pairs a stainless Inox-Radial heat exchanger with a modulating MatriX-Plus burner for steady comfort, 95% AFUE performance, and flexible venting—great for homes and light commercial spaces.

• Brand: Viessmann
• MPN: 7722779
• Type: Wall-Mounted Gas-Fired Condensing (Heat-Only) Hydronic Boiler
• Size/Capacity: 8.5–120 MBH input (NG); Net AHRI 98 MBH; 95% AFUE
• Material/Finish: Stainless-steel Inox-Radial heat exchanger; MatriX-Plus modulating cylinder burner
• Performance: Sound rating 59 dB (max) / 34 dB (min); max condensate 1.2 USG/h; altitude operation up to 10,000 ft
• Connections/Fit: Heating supply/return 3/4" NPTM; DHW tank supply/return 3/4" NPT; gas 3/4" NPTF; 3" (80 mm) flue with 5" (125 mm) coaxial air or 3" single-pipe; direct-vent; vent runs up to 180 ft; 120 VAC, 60 Hz
• Dimensions: 33-3/8" H × 17-3/4" W × 19-3/4" D
• Included: Pressure gauge; installation fittings with 30 psig PRV; DHW sensor; on-board 7" touchscreen control with outdoor sensor; wall-mount bracket & hardware; integral variable-speed boiler pump
• Certifications: Constructed to CSA B51 & ASME Section IV; low-NOx (<20 ppm); compliant with SCAQMD 1146.2/BAAQMD Reg. 9-6/SJVAPCD 4308
• Warranty: Limited lifetime heat-exchanger warranty (residential); parts up to 5 years with registration—see Viessmann warranty sheet

Save Fuel With High Efficiency

At up to 95% AFUE with intensive condensation, the B2HE-120 turns more of every therm into usable heat—helping trim monthly energy costs without sacrificing comfort.

Everyday Performance You Can Feel

A wide input range (8.5–120 MBH) lets the boiler modulate to match changing loads, delivering steady, quiet heat and reducing short-cycling for longer component life.

Durable Materials, Easier Care

The stainless-steel Inox-Radial heat exchanger and MatriX-Plus burner are engineered for clean combustion and long service—designed to resist corrosion and maintain efficiency over time.

Installer-Friendly Flexibility

Multiple venting options (coaxial or two-pipe) with runs up to 180 ft simplify layouts, while standard 3/4" connections and an integral variable-speed pump streamline piping and commissioning.

Smart Controls & Connectivity

A built-in 7" color touchscreen with WiFi enables outdoor-reset control, multi-temperature space heating, and intuitive setup so systems start quickly and run efficiently day-to-day.