FEATURES:
* ASME accredited
* Dual flame burner
* Re-designed heat exchanger
* 25% thicker commercial-grade copper piping
* Warranty: 10-yr heat exchanger & 1-yr parts
* Built-in digital remote included

SPECIFICATIONS:
> Max: 199,900 btuh
> Min: 55,500 btuh
> Standard output: 45,500-163,100 btuh
> Closed type hot water circulation method
> 4-17 GPM flow rate
> 2.5 GPM bypass minimum flow rate
> Temperature settings: 140-180 degrees (9 options)
> Thermal efficiency: 82.8-83%
> Vent size: 4" direct vent