What should be done before adjusting the set point of a gas appliance regulator?

Before adjusting the set point of a gas appliance regulator, checking the gas pressure downstream is essential. This step involves measuring the pressure on the outlet side of the regulator to ensure that it is within the manufacturer's specified range. Proper downstream pressure indicates that the regulator is functioning correctly, and adjustments can be made to achieve optimal performance without risking the appliance's safety or efficiency.

Additionally, this measurement helps identify if there are any existing issues with the gas pressure that would need to be addressed before making any adjustments. Properly understanding the downstream pressure allows a technician to make informed decisions when setting the regulator to ensure that the appliance operates safely and effectively under the intended conditions.