Atlanta, Georgia, January 14, 2019 — At this year’s AHR Expo, Maxitrol Company revealed its new Series MX40 and MX4010 discharge air temperature control systems.
The Series MX40 and MX4010 are used with the Exa E42, E52, and E62 series modulating gas valves.
The MX4010 control system is for use with split manifold atmospheric indirect fired heaters. The split manifold operates as two independent manifold sections sharing a single inducer. The controller senses and maintains a constant discharge air temperature by modulating one section of the manifold and staging the non-modulating section. Typical applications achieve a turndown of approximately 10:1 during continuous operation.
For use with atmospheric indirect fired heaters using a 2‑stage inducer, the MX40 senses and maintains a constant discharge air temperature by modulating the gas flow and staging the inducer. Typical applications achieve a turndown of approximately 5:1 during continuous operation.
Series MX40 and MX4010 consist of either an A40 Amplifier (for 5:1 Turndown) or A40-SM2 Amplifier (for 10:1 Turndown). Common components to both systems are a mixing tube and discharge air temperature sensor, and an optional remote temperature selector.