Apparatus and control method for a hybrid tankless water heater

摘要

An on demand tankless water heater system that is capable of quickly delivering water within a desired temperature range. The tankless water heater provides a hybrid heating method that contains a primary heating system and a secondary heating system disposed in a buffer tank that cooperate to facilitate control of output water temperature during water usage. A pressure differential switch detects low flow demand and allows the secondary heating system to provide immediate heating to the water. This secondary heating system provides a faster temperature response and fine tuning of output water temperature.

主权项

1. A method for controlling thermal spikes caused by overheating in a water supply of a water supply system, the method comprising the steps of:
providing a tankless water heater having a blower, a heat exchanger and a burner, wherein the burner has a thermal output providing a means for heating the water supply,providing a means for detecting a decrease in a flow rate of the water supply, measuring the flow rate of the water supply to detect a decrease in the flow rate, andactivating the blower when a decrease in the flow rate of the water supply has been detected, thereby dissipating excess heat from the heat exchanger to the environment.