Lennox 17F56 Cold Header Box 322838-754 Normally Closed Safety: Provides a

Normally Closed Safety: Provides a 2-way normally closed default state to prevent unintended fluid bypass during power loss

The 48-inch capillary length provides sufficient reach for various HVAC burner box configurations

The P100DA-86 (identical to the P100DA-86C) features open construction and is rated for 120/240 Vac

High-Grade Dielectric Material: Rated for 370V to withstand voltage spikes and continuous duty cycles in residential and light commercial units

Is the flow direction critical during installation

Lennox 17F56 Cold Header Box 322838-754 Normally Closed Safety: Provides aThe Lennox 17F56 Cold Header Box is a critical OEM component designed for high efficiency refrigerant distribution within Lennox evaporator and condenser coil assemblies. As a veteran technician knows, maintaining balanced thermal loading across multi circuit coils is essential for preventing localized freezing and ensuring the compressor operates within its designed superheat range. This HVAC cold header box serves as the primary manifold, routing