Crown Boiler KSZ100 用户手册

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5) Globe or Ball Valve (Recommended) - Used to adjust the flow through the entire tankless heater system if needed.

6) Unions (Required) - Tankless heaters may require periodic gasket replacement or other maintenance which requires

removal of the heater from the boiler. Install unions anywhere in the tankless heater piping that will facilitate removal of the
heater.