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NORA Oilheat Technicians Manual

are covered with a tar-like compound, whereas solid state ignitors feature epoxies which serve the purpose of moisture proofing the device. Epoxy, by its very nature, is somewhat more resistant to moisture and acts as an excellent corrosion inhibitor and heat conductor. If you must replace a transformer When ordering replacement transformers, several facts must be known: 1. The size of the mounting base and location of mounting holes 2. The position of high tension terminals Chapter 9 Ignition Systems Secondary Lead Secondary Lead 9-6 Ignition Systems 3. The style of transformer high tension clips 4. Secondary coil voltage 5. Primary coil voltage 6. Transformer body size Wiring ignition transformers Wire the ignition transformer into the burner circuit as follows: For intermittent ignition, attach a wire from the transformer or ignitor to the neutral wire, and the other wire to the orange motor wire from the primary control. See Figure 9-4 for wiring a Figure 9-3: Construction of an ignition transformer Secondary Coil No.1 Primary Coil No.1 Direction of Magnetic Flux Laminated Steel Magnetic Shunt Laminated Steel Core Primary Coil No. 2 Secondary Coil No. 2 Mid Point of Coils Grounded Here


NORA Oilheat Technicians Manual
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