Tankless Water Heater
An endless hot water supply is what a tankless water heater can do for your family. Hot water is needed for multiple purposes. Prioritizing activities to conserve hot water is now a thing of the past. Courtesy Gas has Certified Rinnai Technicians to explain, answer your questions, and install and service your Rinnai tankless water heater.
How a Rinnai Tankless Water Heater Works
When the need for hot water arises by turning on a shower, washing machine, dishwasher, or faucet, cold water enters the Rinnai Tankless Water Heater from the inlet pipe at the bottom of the unit. The PC board is then signalled to activate the flame igniter or ignition.
A combustion fan turns on to allow oxygen into the burner to ignite the flame as the gas control valve opens at a low frequency. Once a good flame is present, the igniter stops sparking — beginning the next sequence of operation in a matter of seconds.
As the hot water fixture shuts off, cold water stops entering the tankless water heater, and the flame diminishes. The combustion fan continues to operate at a low speed for a short period. This allows the exhaust of any leftover combustion gases.
The gas valve and blower automatically adjust the incoming gas and oxygen to meet the water heating demands. If the demand is small, the Rinnai Tankless Water Heater can use a smaller flame and less gas. If the demand is greater, the flame can expand across the width of the entire burner to heat more water. The tankless water heater adjusts as needed to maintain the temperature set point. A digital controller allows the user to choose his desired temperature.
Water is heated as it passes through the coils of the copper heat exchanger and exits from the hot water outlet pipe to travel through the pipes of the home or business to the water fixture where hot water is needed. For Condensing models, the water is preheated as it passes through a secondary stainless steel (latent) heat exchanger, capturing any extra heat (or latent heat) before it escapes into the vent system.
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