Multi-System Options Number of Connected Water Heaters:Accessories Necessary: 2(1) 2-Unit connection cable or (1) Multi-Unit connection kit 3(1) Multi-Unit connection kit and (1) Multi-Unit connection cable 4 (1) Multi-Unit connection kit and (2) Multi-Unit connection cables 5(1) Multi-Unit connection kit and (3) Multi-Unit connection cables Connection cable or kits are available for multi-system integration.
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