Rinnai REU-MSB-C1 Cable Connect for Rinnai Tankless Water Heaters<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>For use with Rinnai tankless water heaters (except for models V53e， V53i and R63LSe which must use pressure activation valves， PVA)</li><li>Temperature setting for connected water heaters is controlled by the temperature controller connected to the water heater with the Master MSB Board.</li><li>Temperature controllers connected to the other units will provide maintenance codes for their respective units</li><li>Used with the MSB-M kit to connect an additional water heater to the control board</li><li>Includes cable B (9.8-Feet)， brackets， ties， screws， and instructions</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31HWb6rHEdL.jpg" noproxy>