a steeper pitch can draw excessive current and burn out the condenser fan motor

While it provides a Physical barrier against snow and ice accumulation

Smith BTH 300A

this 24V staged heating control prevents simultaneous electrical surges by staggering the activation of resistive loads

Common indicators include the blower motor failing to engage after a call for heat

Trane ADP1053 Adapter 321702-401 a steeper pitch can drawThe Trane ADP1053 Adapter (also identified by factory part number ADP01053) is a critical OEM replacement part engineered for high efficiency flue management in Trane and American Standard residential systems. As a veteran technician knows, maintaining the integrity of the flue connector is non negotiable for safe combustion venting. This 3 inch plastic adapter is designed with a perforated air diffuser to stabilize airflow within the venting