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Table of contents Table Of Contents Locating The Appliance Rhsos And Combustion Air Combustion Air From Room Intake Combustion Air Side Wall Vent Terminal Side Wall Combustion Air Terminal Vertical Vent Terminal Vertical Combustion Air Terminal Rheso Vent Test – Boilers Gas Supply Laras Piping Water Connections – Rheos Boiler Hot Supply Connections – Boiler Cold Water Make-up – Boiler Water Flow Requirements – Boiler Freeze Protection – Boiler alars Water Connections – Rheos Water Heater Water System Piping – Water Heater Water Flow Requirements – Water Heater Freeze Protection – Water Heater Temperature Control – Boiler Temperature Control – Water Heater Remote Water Heater Temperature Control Internal Water Heater Temperature Control Temperature Control Features Minimum Output Setting External Control Connections Filling The Boiler System Shutting Down The Rheos To Restart The Rheos Appliance Maintenance And Component Description Modulating Gas Valve Safety Gas Valve Manual Reset High Limit Control Heat Exchanger Coil Normally Open Vent Valve Motorized Safety Valve Gas Pressure Switches Sequence Of Operation Delayed Ignition – Possible Causes Gas Valve Regulation Short Cycling – Boiler rheoz Short Cycling – Water Heater High Gas Consumption Don’t have an account?