Maxitrol TD121 Temperature Selector 30067439-890 or position-indication lights in economizer

or position-indication lights in economizer circuits

Optimized Conductivity: Designed to carry the full secondary voltage pulse required for consistent arc generation in the combustion chamber

the internal plunger is likely seized and requires immediate replacement

this 3/4-inch valve features a robust bronze body construction and high-tensile manganese bronze arms

For ambient temperature applications (100

Maxitrol TD121 Temperature Selector 30067439-890 or position-indication lights in economizerThe Maxitrol TD121 Temperature Selector is a critical control component designed for Selectra Series 21 and 31 electronic gas modulation systems. Specifically engineered for make up air heating and indirect fired units with atmospheric burners, this remote selector provides precise setpoint management within a 55 90 degrees F range. Unlike standard thermostats, the TD121 functions as a remote setpoint adjuster, communicating directly with the A1010 or