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Designed for high-performance combustion environments
The sweat connection allows for a secure
Designed for high-pressure environments
As a veteran-preferred HVAC boiler part
Replacing it with a single-pole variant can bypass critical safety protocols or cause control board errors
Maxitrol TD121 Temperature Selector 30067439-890 Designed for high-performance combustion environmentsThe 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
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