Functional Devices PSH300A Power Supply R-410A What does a power choke

What does a power choke do in a Lennox furnace

The A-4000-635 is specifically engineered for 1/2 inch NPT connections

Common indicators include the inducer motor running continuously without ignition

it maintains the structural integrity and safety parameters originally specified by the manufacturer

The purging sequence runs the blower or ensures airflow for 30 seconds to evacuate any unburned fuel from the heat exchanger before attempting to light the pilot

Functional Devices PSH300A Power Supply R-410A What does a power chokeThe Functional Devices PSH300A is a commercial grade 300VA power supply designed to provide reliable, isolated power for building automation and HVAC control systems. This multi tap unit accepts 120 240 VAC, as well as 277 and 480 VAC primary inputs, converting them into three independent 100VA Class 2 24 VAC outputs. Each secondary circuit is equipped with a dedicated 4A circuit breaker and an On Off switch, allowing for localized isolation during