The External Bypass Valve in a Gas Pool Heater is set by determining what?

The External Bypass Valve in a Gas Pool Heater is set by determining the temperature rise across the appliance. This is because the valve’s primary function is to manage the flow of water through the heater, ensuring that it operates efficiently and effectively. By monitoring the temperature rise, technicians can determine if the water is reaching the desired heating levels.

Setting the valve based on temperature allows for optimal performance of the heater, ensuring that the system does not overheat or underheat the water, which can lead to inefficient operation or damage to the equipment. This method is crucial for maintaining the balance between the heating capacity of the appliance and the flow rate of water being circulated through the system. Therefore, correctly assessing the temperature rise ensures that the valve is adjusted appropriately for efficient heating.