909 SE EVERETT MALL WAY CRUCIBLE BREWERY 2025-03-28

4.3.5 Freeze Protection Make sure that in case of freezing weather the water heater and its water lines are protected to prevent freezing. Damage due to freezing is not covered by the warranty. When connected to gas and a 120-volt power supply, the water heater will not freeze when the outside air temperature is as cold as -22°F (-30°C)for internal (indoor) models or-4°F (-20°C)for external (outdoor) models, when protected from direct wind exposure. Because of the "wind-chill" effect, any wind or circulation of the air on the water heater will reduce its ability to protect itself from freezing. In the event of a power failure and/or gas interruption at temperatures below freezing, the water heater should manually be drained of all water to prevent freezing damage. In addition, drain the condensate trap, drain line and pressure relief valve. Loss of freeze protection may result in water damage from a burst heat exchanger or water lines. The water heater may be drained manually. However, it is highly recommended to install the optional Drain Down Kit accessory that will enable the water heater to immediately drain upon loss of power(the condensate trap and pressure relief valve are not affected by the Drain Down Kit and must be manually drained). The freeze protection features will not prevent the external piping and valves from freezing. It is recommended that hot and cold water pipes be insulated. Pipe cover enclosures may be packed with insulation for added freeze protection. Freeze Protection Piping Diagram I'Vacuum Breaker Legend Vacuum Breaker Pressure Relief Valve Union Check Valve o Ball Valve Solenoid Valve Drain Valve 0 o 0 i 3/4 in.Normally Closed Solenoid Valve Hot Water Cold Water Supply Line Supply Line 1/2 in.Normally Open Solenoid Valve Route Drain Per Local Code Figure 7: Freeze Protection Piping Diagram Rinnai Tankless Water Heater Installation and Operation Manual 21