Allanson

Allanson ignition transformers are available in single-pole and double-pole configurations, which refer to the number of high-voltage output terminals. A single-pole transformer has one high-voltage terminal and relies on the burner's ground for the return path, making it suitable for applications where the burner is properly grounded. A double-pole transformer has two high-voltage terminals, providing a complete circuit without relying on the burner ground, which can be beneficial in certain oil burner installations where grounding is less reliable. The choice between the two depends on the burner's design and the original transformer's specifications. For example, the Allanson 1196-H is a single-pole model for gas applications, while the 421-663 is a double-pole model for oil applications. Always match the pole configuration to the existing transformer to ensure proper ignition and safety.

To select the correct Allanson ignition transformer, you need to match several specifications: input voltage (e.g., 110V, 120V, 240V), frequency (50Hz or 60Hz), secondary current (typically 20-30mA), grounding configuration (one-end or mid-point), and high-voltage terminal type (Rajah connector, spring clip, or stud). Additionally, consider the burner type and brand, as Allanson offers models specifically designed for Carlin, Gordon Piatt, PVI Industries, and other manufacturers. For example, the Allanson 2730-630 is designed for Carlin 99, 100, 101, and Card Miser burners, operating on 110V at 50Hz. If you are replacing a failed transformer, check the original part number and its specifications. If that is not available, consult the burner's manual or contact a technical supplier like 3G Electric for assistance in cross-referencing.

Constant duty refers to the transformer's ability to operate continuously without overheating or degrading, which is essential for burners that may require ignition for extended periods or cycle frequently. Allanson ferromagnetic transformers are designed for constant duty, meaning they can sustain their rated output (e.g., 20mA or 23mA) indefinitely under normal operating conditions. This is achieved through robust construction, including high-quality magnetic core materials and insulation systems that withstand the thermal stress of continuous operation. In contrast, some transformers are rated for intermittent duty and would overheat if used continuously. For industrial combustion applications, where burners may run for hours, constant duty is a critical specification. Allanson's design ensures reliable ignition and long service life, reducing the frequency of replacements and maintenance downtime.

Yes, Allanson manufactures ignition transformers for both gas and oil burners, but it is important to select the correct model for your fuel type. Gas burners typically require a single-pole transformer with one-end grounding, such as the Allanson 1196-H or 1092-IC, which are designed for industrial combustion gas applications. Oil burners often use double-pole transformers with mid-point grounding, such as the Allanson 421-663 for PVI Industries, because oil burners may have different ignition requirements. The application is clearly specified in the product specifications (e.g., 'Application: GAS' or 'Application: OIL'). Using a transformer designed for the wrong fuel type can lead to improper ignition, flame instability, or safety hazards. Always verify the application and burner type before purchasing a replacement.

Allanson ignition transformers come with several high-voltage terminal types to accommodate different ignition cable connections. The most common are Rajah connectors, which are push-on terminals that provide a secure connection to the ignition cable; spring clip contacts, which clamp onto the cable; and 1/4-20 studs, which allow for a screw-on connection. For example, the Allanson 1196-H uses a Rajah connector, the 2730-630 uses a spring clip contact, and the 542-GP uses a 1/4-20 stud. The terminal type must match the ignition cable and the burner's electrode assembly. When replacing a transformer, ensure the terminal type is compatible with your existing setup, or you may need to replace the ignition cable as well. 3G Electric can help you identify the correct terminal type based on your burner model.

Allanson electronic ignitors, such as the 2265-TP, are designed for constant duty and can be used in many applications as an alternative to ferromagnetic transformers. However, they are not always direct replacements because their electrical characteristics and mounting dimensions may differ. Electronic ignitors typically operate at higher frequencies and may have different input voltage requirements (e.g., 240V) and grounding configurations. For example, the 2265-TP operates on 240V input at 50/60Hz and provides 30mA output, which is higher than many ferromagnetic models. Before substituting an electronic ignitor for a ferromagnetic transformer, verify that the burner's control circuit is compatible, including the input voltage and the ignition cable connection. In some cases, a retrofit kit may be required. Consult the burner manufacturer's guidelines or a technical expert to ensure safe and reliable operation.