Rinnai® REU-MSB-M RINREUMSBM

With the use of cascade cable, up to 25 water heaters can be electronically connected. This connection rotates water heater operation order to ensure equal usage among the entire system and enables all water heaters connected to modulate operation and function as one hot water source.

Rinnai® Multi-Unit Control, For Use With: SE, HE+ Series Tankless Hot Water Heaters

For proper operation, it is NOT recommended that different water heater models be connected together

• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/Rinnai_REU_MSB_M_Instruction_Installation_Manual.pdf