During PDI on RV furnaces, to what setting should the thermostat be set?

Setting the thermostat to the highest setting during the Performance Data Inspection (PDI) on RV furnaces is crucial for several reasons. When the thermostat is set to the highest temperature, it ensures that the furnace operates at its maximum capacity, allowing technicians to effectively test and evaluate its performance. This setting helps to identify any potential issues related to heating efficiency, response time, or overall functionality of the furnace.

Running the furnace at the highest temperature also allows for thorough observation of its operation under realistic conditions, as it simulates an actual usage scenario. This optimal setting contributes to ensuring the furnace can maintain a comfortable environment consistently, which is vital for user satisfaction and safety during RV use.

Other settings, such as ambient or medium, could lead to insufficient heating tests, potentially overlooking how well the furnace handles higher thermal demands. Thus, setting the thermostat to the highest position is the most effective approach to determining the operational integrity of the RV furnace during inspections.