Rinnai gets heavy with continuous hot water

Rinnai, DHW, domestic hot water

Rinnai’s Heavy Duty HD50i Internal water heater is a wall-hung, gas-fired continuous-flow water heater that can deliver hot water at 13 l/min through a 50 K temperature rise. It has a 125 mm concentric flue that can be extended up to 15 m, less 1 m for each 45° bend. These water heaters can operate with pressures from 1 to 10 bar, so they are suitable for mains cold water and systems with boost pumps. Incoming water temperatures of up to 60°C are accepted, making the HD50i suitable for secondary return systems.

Outputs are up to 69 kW, and water temperature is stable to within ±1 K. These water heaters operate only on demand.

For more information on this story, click here: February 2012, 117
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