Our most powerful gas condensing boiler
$0.00
Vitocrossal 300 CA3B is a commercial gas-fired condensing boiler with stainless steel Inox-Lamellar heat exchanger and fully-modulating burners. Rated input: 2500 to 6000 MBH.
Main Features
Low emissions & quiet operation
With fully-modulating Viessmann pre-mix cylinder burners (up to 3).
Easy fuel changeover
From NG to LP with a simple turn of a key (on Dual Fuel models).
Fully assembled boiler
Simplifies installation and commissioning.
Large water content
Reduces wasteful burner cycling which increases system efficiency and overall durability.
Seamless integration
With building management systems.
Venting flexibility
Venting through the sidewall or chimney, and combustion air options of sealed combustion or room dependent.
Product details
Natural gas (NG) or liquid propane gas (LPG)
250,000 BTU (73 kW) for CA3B 2.5
300,000 BTU (88 kW) for CA3B 3.0, 3.5, 5.0
400,000 BTU (117 kW) for CA3B 4.0, 6.0
2,500,000 BTU (733 kW) for CA3B 2.5
3,000,000 BTU (879 kW) for CA3B 3.0
3,500,000 BTU (1026 kW) for CA3B 3.5
4,000,000 BTU (1172 kW) for CA3B 4.0
5,000,000 BTU (1465 kW) for CA3B 5.0
6,000,000 BTU (1758kW) for CA3B 6.0
96.1% for all models
* Tested to ANSI/AHRI standard 1500 Performance Rating of Commercial Space Heating Boilers / DOE Test Procedure 81 FR 89276 / U.S. Standards ANSI Z21.13/CSA 4.9 / AHRI, BTS-2000 Testing Standard Method to determine the efficiency of Commercial Heating Boilers.
4233 lbs (1920 kg) for CA3B 2.5, 3.0
4696 lbs (2130 kg) for CA3B 3.5
4806 lbs (2180 kg) for CA3B 4.0
6261 lbs (2840 kg) for CA3B 5.0
6894 lbs (3127 kg) for CA3B 6.0
88¾ inches (2251 mm) for CA3B 2.5, 3.0
99½ inches (2526 mm) for CA3B 3.5, 4.0
136 inches (3449 mm) for CA3B 5.0, 6.0
34 inches (860 mm) for CA3B 2.5, 3.0
39½ inches (1000 mm) for CA3B 3.5, 4.0, 5.0, 6.0
78¾ inches (2000 mm) for CA3B 2.5, 3.0
84 inches (2131 mm) for CA3B 3.5, 4.0, 5.0, 6.0
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