Rinnai RCB301AN Commercial Wall Mount Boiler Natural Gas 301,000 BTU Input
LCD touch screen. 97% thermal efficiency. Common vent up to 4-units. Cascade up to 8-units.
Rinnai RCB399AN Commercial Wall Mount Boiler Natural Gas 399,000 BTU Input
Rinnai RCB Series RCB399AN Natural Gas Wall-Mount Indoor Heat-Only Boiler – 120V, 399,000 BTU. Keep your space warm with this Rinnai RCB series boiler! This water heater operates using a direct electronic ignition for better energy efficiency.