Allanson Transformers 421-BT387 Transformer Els PW 17895 more frequent changes may be

more frequent changes may be required to prevent increased static pressure

This Wayne combustion repair kit includes a high-quality 2-electrode set with buss bar assemblies (21666-013 and 21667-013)

For contractors spec'ing out reliable flow control

this switch actuates precisely at 0

Key Benefits for Technicians: Precise 0-5" WC Range: Optimized for low-pressure differential monitoring in ductwork and static reference points

Allanson Transformers 421-BT387 Transformer Els PW 17895 more frequent changes may beThe Allanson 421 BT387 is a heavy duty ferromagnetic ignition transformer designed for constant duty service in high demand oil heating systems. As a universal service replacement, this 120V oil burner transformer delivers a consistent 10,000V secondary output at 23mA, ensuring a stable arc for reliable ignition in residential and commercial applications. Engineered with a mid point ground and a double pole configuration, the 421 BT387 features a