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The Maxitrol TD121A is a precision remote temperature selector engineered for high-accuracy atmospheric gas-fired heating systems
Applying DC voltage will result in coil failure and may create a safety hazard
sub-master pneumatic volume reset controller designed for terminal units in commercial HVAC systems
If the communication failure (Code C1) is isolated to the inverter PCB assembly
Common Questions Is the blue housing indicative of a specific pressure range
Dwyer Instruments DA-7031-153-1 Pressure Switch R-407C The Maxitrol TD121A is aThe Dwyer DA 7031 153 1 is a high performance Bourdon tube pressure switch designed for precision control in commercial and industrial HVACR applications. This adjustable deadband pressure switch features an operating range of 0. 125 to 15 psig, providing reliable setpoint management for low pressure systems. Engineered with a brass Bourdon tube and a durable SPDT switch rated for 10 amps, the DA 7031 153 1 ensures long term endurance and