Are there differences between the CU199 and other Rinnai condensing products?
Yes, there are some differences for the CU199 which includes:
- Built in cascade controller to link up to 24 units
- A Thermal Efficiency rating (96% thermal efficiency)
- Commercial Energy Star designation
- New common venting configurations (room air and sidewall intake with vertical exhaust)
- Temperature settings from 98°F to 185°F, right out of the box