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Progress continues in terms of rooftop unit performance and better, cheaper maintenance. Technology seems to be making a leap in terms of what kind of equipment one might find up there.
Bob and Tim are at a job where a technician from another company could not figure out the electrical, so he just put the panel back on the electrical compartment and left the job. It is a heat pump and the compressor wiring is all loose. They need to figure out how to wire it back and find out the problem.
This solution delivers a highly efficient performance with a featherweight design and includes a uniquely streamlined plug-and-play, pre-assembled installation process that does not require any guy-wires.
Rosenberg backward-curved fans with electronically commutated (EC) motors are now available with three-phase 5.5 kW motors for greater power and efficiency.
The Opt2MAX motor features a 56/140 frame motor that comes pre-programmed with an integrated drive and provides seamless transition from high to low speed. Available in 1–10 HP, it is designed for direct drive and belt drive applications.
The motor is intended for use in rooftop units, air handlers, exhausters, condenser and chiller fans, and other variable torque load applications.
The introductory course on motors and variable-speed drives will give participants a better understanding of motors and the theory behind how they work.
On Demand What if you could replace 32 PSC motors with three ECM motors? With advanced ECM technology, it can be done in HVAC applications. These motors can help reduce truck stock and provide the ability to complete more calls on the same day without driving to get a part. ECM technology also delivers unmatched energy savings and proven reliability.
