Kromschroeder TGI8-20/19WE (84391260) Zündtransformator

The Kromschroeder TGI8-20/19WE is an ignition transformer listed under manufacturer codes 84391260 and 624.820.029. Parts of this type step up mains voltage to the level required to produce a spark across the ignition electrode gap. The transformer is energised only during the ignition phase, on command from the burner control (flame safeguard). Once the control confirms a stable flame, the transformer is de-energised. Such ignition transformers are selected on several parameters: primary voltage (230 V is common, but 110 V and 24 V variants exist), secondary voltage and current, duty cycle, mounting arrangement, and terminal type. The cable connector pattern must match the existing wiring harness. The ignition cables themselves are silicone-insulated to withstand the high voltage and heat. A hardened or cracked cable can leak the spark to earth, mimicking a failed transformer, so the cable condition should be verified before condemning the unit. When replacing an ignition transformer, confirm that the primary voltage matches the burner control output and that the secondary output is adequate for the electrode gap and burner type. The physical mounting and terminal layout must also correspond to the existing support bracket and plug. No further specific ratings or compatibilities for this article are stated in the available data.