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8.Using a slotted screwdriver, remove the 7/8" (22mm) diameter knockout from the right hand side of the cabinet above where the strain relief was located.

9.Route the electrical cable from the breaker/fuse panel through the 7/8" (22mm) diameter hole and secure to the cabinet using an approved clamp. The power wires should extend approximately 6" (152mm) into the control compartment.

WARNING: Make sure the power to the power cable has been turned off at the breaker/fuse panel of the residence before proceeding.

10.Connect the ground wire from the power cable by wrapping it around the ground stud of the unit and securing it using the #6-32 nut.

11.Using a wire nut, connect the hot lead (black), of the power cable to the power cord wire that ends in 90° terminal (on the control board side, it ends on your right hand side). Similarly, connect the neutral wire (white), of the power cable to the power cord ending with the straight terminal (on the control board side, it ends on your left hand side) using a wire nut. It is recommended that the wire nuts be taped to the wires, using electrical tape, as an extra safety measure.

12.Visually check that none of the wires in the control compartment have been dislodged from the con- trols. If they have, use the wiring diagram on the unit or in the instruction manual to replace them in their proper location.

13.Turn the power to the unit on at the breaker/fuse panel. Place the unit into operation and check to make sure that all of the systems are working prop- erly.

HEF22 specifications

CFM Corporation has long been a leader in the aerospace industry, renowned for its innovative aircraft engines. One of its standout products is the HEF22, a high-efficiency turbofan engine that has made significant waves in both commercial and military aviation sectors. The HEF22 integrates advanced technologies designed to enhance performance, fuel efficiency, and overall operational capabilities, making it a prime choice for contemporary aircraft.

One of the key features of the HEF22 is its advanced composite materials. This innovation allows for lighter engine components without sacrificing strength or durability. The weight reduction directly contributes to improved fuel efficiency, enabling airlines to operate with lower fuel consumption and reduced carbon emissions. The use of composite materials also enhances the engine's resistance to corrosion and wear, ensuring a longer operational lifespan.

CFM Corporation's HEF22 is equipped with a state-of-the-art digital engine control system. This system optimizes performance by constantly monitoring and adjusting various parameters, ensuring that the engine operates at peak efficiency under varying conditions. The predictive maintenance capabilities of this system also play a crucial role in reducing downtime and maintenance costs, giving operators a comprehensive overview of engine health in real-time.

Another notable characteristic of the HEF22 is its noise reduction technology. The engine incorporates advanced acoustic treatments and design features that significantly lower the noise footprint, making it compliant with stringent noise regulations. This aspect is increasingly important as airports and regulatory bodies worldwide impose stricter noise limits, particularly in urban areas.

The HEF22's thrust capability is also impressive, providing the necessary power for both takeoff and sustained flight in various aircraft configurations. Its adaptability makes it suitable for a wide range of applications, from fuel-efficient regional jets to larger commercial aircraft, thereby meeting the diverse needs of the aviation market.

Additionally, the engine prides itself on a sleek aerodynamic design. This characteristic not only contributes to its aesthetic appeal but also significantly improves overall efficiency. The HEF22's engine nacelle is engineered to minimize drag, which further enhances fuel efficiency and performance.

In conclusion, the CFM Corporation HEF22 represents the pinnacle of modern turbofan engine design, boasting cutting-edge technologies and features. With its emphasis on efficiency, durability, and reduced environmental impact, the HEF22 stands as a testament to CFM Corporation's commitment to innovation and quality in the aerospace industry.