Cofi 90° insulator 17GO172605

The Cofi 90° insulator (SKU 17GO172605) is a ceramic component designed to electrically isolate the electrode rod from the burner head in ignition systems. It features a 90° angle to position the electrode tip correctly within the flame zone, preventing short-circuits to ground. This insulator is compatible with Unigas P525A VS Drago burners and is supplied as a set of 2 pieces. It is an original part, resistant to high temperatures, combustion products, soot, and long-term operation, ensuring stable spark generation and burner start.

When selecting a replacement insulator of this type, key parameters include the inner diameter (must match the electrode rod), overall length (determines the electrode gap relative to the burner), and the ceramic's resistance to thermal cycling and soot accumulation. Before ordering, compare these dimensions with the existing part. During installation, inspect the insulator for cracks, chips, or glazing, and verify that the electrode tip remains correctly gapped after assembly. The insulator works together with the ignition electrode and transformer; in gas burners, an ionisation electrode requires similar insulation.

A cracked or carbon-tracked insulator can cause ignition failure or loss of flame signal. This may manifest as the burner failing to start, intermittent operation, or the flame detection system not functioning properly. Check the insulator for visible damage, carbon tracking, or glazing, and ensure the electrode gap is correct.