Viessmann Vitocell 300-B 79 Gallon Dual Coil Indirect Fired Domestic Water Heater - 7720336
- SKU #: VIES7720336
- MPN #: 7720336
$5,684.42
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Enjoy Solar‑Ready, Hygienic Hot Water With The Viessmann Vitocell 300‑B 79‑Gallon Dual‑Coil Stainless Steel Indirect Water Heater (7720336)
Want fast, consistent hot water for showers, laundry, and the kitchen—without the upkeep of a traditional glass‑lined tank? The Viessmann Vitocell 300‑B (model 7720336) is a 79‑gallon, dual‑coil indirect water heater built from high‑grade stainless steel for long service life and clean, hygienic hot water. It’s solar‑ready with two internal coils: one for your boiler and one for solar (or heat pump) input, delivering excellent recovery and premium efficiency.
- Brand: Viessmann
- MPN: 7720336 (Vitocell 300‑B, EVBA 79 USG)
- Type: Dual‑Coil Indirect‑Fired DHW Storage Tank (Solar‑Ready)
- Storage Capacity: 79 Gallons (300 L)
- Tank Material: High‑grade Stainless Steel (no sacrificial anode required)
- Insulation: Rigid PUR foam; low standby heat loss (~0.6°F/hr)
- Heat Exchanger Coils: Two internal stainless coils (upper = boiler; lower = solar/heat pump)
- Coil Surface Area: ~16 ft² (1.5 m²) total
- Coil Volume: ~2.9 Gallons (11 L)
- AHRI Ratings (Coils In Parallel, 180°F Supply): First Hour 496 GPH; Continuous 429 GPH; First Draw 67 Gal
- Max Working Pressure (DHW): 150 psig (210°F)
- Max Working Pressure (Coils): 220 psig (392°F)
- Connections: 1″ male NPT for coils, domestic hot/cold, and recirculation
- Dimensions (W × H × Tilt): ~29″ diameter × 68″ height; ~72″ tilt height
- Weight (With Insulation): ~249 lb
- Certifications: AHRI rated; CSA Low Lead / NSF/ANSI 372 compliant
Stainless Steel Tank, No Anode To Replace
Unlike glass‑lined tanks, the Vitocell 300‑B uses a homogeneous stainless steel cylinder—so there’s no sacrificial anode to check or replace. That means less maintenance and consistently clean domestic hot water.
Dual‑Coil, Solar‑Ready Design
Two generous internal coils make it easy to integrate solar thermal (or a heat pump) alongside your boiler. The lower coil harvests solar heat; the upper coil quickly boosts temperature from the boiler when demand spikes or the weather is cloudy.
High Recovery For Busy Homes
With AHRI‑certified performance up to 496 GPH first‑hour rating (coils in parallel; 180°F supply), this 79‑gallon indirect delivers steady, back‑to‑back hot water for bathrooms, laundry, and the kitchen—ideal for multi‑bath homes.
Comfortable, Efficient, And Quiet
Thick PUR foam insulation keeps standby losses low (about 0.6°F per hour), helping your system use less energy to maintain temperature. No burner or fan in the tank means whisper‑quiet operation.
Installer‑Friendly Layout
Standard 1″ NPT connections for DHW, recirculation, and coils streamline piping. A compact ~29″ diameter and ~68″ height simplify placement in mechanical rooms, and integrated sensor wells and thermometers speed up commissioning.