Ways to connect recirculation when using Rinnai Tankless Water Heaters with built in recirculation pumps. Two methods of using recirculation in your house setting with dedicated return line with direct pipe in or using our dedicated return valve ( part # 107000450 ). In absence of dedicated return line you can create recirculation loop using our Thermal By-Pass valve ( part # 107000143 ) Helping you getting them most out of your Rinnai Tankless Water Heater!

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