In Dual Fuel Systems, where must the indoor coil be located?

In a Dual Fuel System, the indoor coil must be located after the heat exchanger for the system to operate efficiently. The heat exchanger plays a critical role in transferring heat from the secondary heating source, such as gas or oil, to the air that passes through the indoor coil. This setup allows the system to maximize heating efficiency by ensuring that the air that has passed through the indoor coil is warmed appropriately before being distributed throughout the space.

Locating the indoor coil after the heat exchanger allows it to utilize the heated air effectively, providing comfort and efficiency in heating the indoor environment. The sequence of this installation is important as it establishes the correct flow of heated air to enhance performance. Understanding this configuration is essential for effective operation and troubleshooting of Dual Fuel Systems.