Cofi Ignition transformer TRS820P

The Cofi Ignition transformer TRS820P is a high-voltage ignition transformer designed to generate a powerful spark for automatic ignition systems in gas and liquid fuel burners. It operates with a supply voltage of 230 V at 50 Hz, drawing 1 A, and produces a secondary voltage of 8 kV. The transformer measures 140 mm in length, 87 mm in width, and 66 mm in height, with a net weight of 1.897 kg and a gross weight of 1.972 kg. It is compatible with Unigas equipment and serves as an OEM equivalent to the Dungs DIZ 100. The ignition cable is silicone-insulated to withstand high voltage and heat.

When selecting a replacement ignition transformer of this kind, key parameters to match include the primary voltage (commonly 230 V, but also 110 V or 24 V), secondary voltage and current, duty cycle rating, and mechanical mounting form. The mounting provisions, terminal layout, and connector pattern for the ignition cable must be compatible with the burner. Before ordering, verify the exact electrical ratings and mounting dimensions against the burner or boiler documentation.

Typical failure modes for ignition transformers include cracked or hardened ignition cables that leak spark to earth, which may appear as a transformer fault. When a transformer fails, the burner may not ignite, or ignition may be intermittent. Check the ignition cable for damage and ensure the transformer is receiving the correct supply voltage.