Cofi Ignition transformer TRG823PC

The Cofi Ignition transformer TRG823PC is a high-voltage ignition transformer designed for automatic ignition systems in gas and liquid fuel burners. It operates with a supply voltage of 230 V at 50 Hz, drawing a current of 0.9 A. The transformer provides a secondary voltage of 8 kV to generate a stable spark for fuel ignition. It has a net weight of 2.73 kg and dimensions of 190 mm in length, 130 mm in width, and 105 mm in height. The ignition cable is silicone-insulated to withstand high voltage and heat.

When selecting a replacement ignition transformer of this type, key parameters to match include the primary voltage (commonly 230 V, but also 110 V or 24 V versions exist), the secondary voltage and current, and the duty cycle (intermittent operation). The mounting configuration and terminal arrangement must correspond to the existing setup. The cable connector pattern must also match the electrode assembly. Always inspect the ignition cables and connections before ordering, as a hardened or cracked cable can cause spark leakage, which may appear as a transformer fault.

Typical failures of ignition transformers include internal short circuits or open windings, leading to no spark or weak spark at the electrode. The burner may fail to ignite or experience intermittent ignition, causing the control to lock out. Check the ignition cable for cracks or hardening, as this can leak the spark to earth, mimicking a transformer fault. Also, verify the primary voltage and connections to ensure proper operation.