Rinnai Multi Unit Control kit REU-MSB-M
For use with Rinnai tankless water heaters. Electronically connects 3 tankless water heaters and allows them to function as one hot water heater (source).
Specifications:
- Includes Control Board
- Cable A - 18 inches
- Cable B - 9 feet 8 inches
- Ties and Screws
- 120V