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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
piping using the included spring clip
it will disrupt the vacuum needed to close the pressure switch
and building management systems
always verify your boiler model number against the manufacturer’s parts list to ensure the correct voltage and sensitivity range
an upper spring seat
Allanson Transformers 2721-668 Transformer Els PW 17895 piping using the included springThe Allanson 2721 668 Ignition Transformer is a heavy duty, iron core electromagnetic unit designed for reliable oil burner ignition. This transformer operates on a 120Vac supply voltage and delivers a high voltage 10,000Vac secondary output at 23mA. Engineered with a midpoint ground configuration, it ensures stable arc performance and consistent combustion in residential and commercial heating systems. As the direct replacement for 2721 668SF models,
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