Operation - Electrical

Electrical Sequence

1.Exhaust Fan Contact (S1) Closed (optional)

Power passes through N.C. contact on exhaust fan overload (ST2 OL), which is closed if exhaust fan (M2) has not overloaded

Power passes to exhaust fan starter (ST2)

N.O. contact on exhaust fan starter (ST2) is energized and closed

Power passes to exhaust fan

Exhaust fan (M2) starts

2.Supply Fan Contact (S2) Closed

Power passes through N.C. field supplied fire contact (FSC)

Power passes through optional N.O. contact on exhaust fan starter (ST2), which is closed when the optional exhaust starter (ST2) is activated

Power passes through N.C. contact on supply starter overload (ST1 OL), which is closed if the supply fan has not overloaded

Power passes through N.C. contact on optional freeze protection timer (RT4) which remains closed if the temperature has remained above the set point

Power passes to and energizes optional inlet damper (D1), which opens

Power passes through optional N.O. damper limit switch (DL1), which is energized and closed when the optional inlet damper is open. It may take several minutes for the damper to fully open and for the damper limit switch to close

Power passes to and energizes fan relay (RF)

Power passes through N.O. contact on fan relay

(RF), which closes when the fan relay (RF) is energized

Power passes to and energizes supply fan starter (ST1)

N.O. contact on supply fan starter (ST1) is energized and closed

Supply fan (M1) starts

3.Electric Heat Contact (S4) Closed (optional)

Power passes through N.O. contact on fan relay

(RF), which is energized and closed

Power passes through N.C. contact on optional inlet air sensor (TS4), which is closed if the inlet air temperature is below the set point

Power passes to and energizes heat relay (RH)

Power passes through N.O. contact on heat relay (RH), which closes when the heat relay (RH) is energized

Power passes through N.O. contact on pressure

differential switch (PDS), which closes when proper airflow is achieved

Power passes through N.C. automatic and manual reset temperature cutouts (A and M), which remain closed if the maximum temperature has not been reached

Power passes to and energizes operating contactor relay (C1)

Power passes through N.O. contacts on operating contactor (C1), which is closed

Electric heater modulates/stages to maintain temperature set point

4.Evaporative Cooling Contact (S4) Closed* (optional)

N.O. contact on fan relay (RF) is energized and closed

Power passes through N.O. contact on optional inlet air sensor (TS4), which is energized and closed if the inlet air temperature is above the set point

Power passes to and energizes cool relay (RC)

N.O. contact on cool relay (RC) is energized and closed

Power passes to optional evaporative cooling pump (P1)

*If DX or chilled water coils are used rather than an evaporative cooler, the cooling sequence of operation will depend on the coil controls. Cooling coil controls are supplied by others.

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Model MSX Make-Up Air

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Greenheck Fan 470658 MSX manual Operation Electrical, Exhaust Fan Contact S1 Closed optional, Supply Fan Contact S2 Closed

470658 MSX specifications

The Greenheck Fan 470658 MSX is a premium performance ventilation solution designed to meet the needs of various commercial and industrial applications. Known for its robustness and efficient air movement capabilities, the MSX series is highly regarded in the industry for its innovative technologies and user-friendly features.

One of the standout features of the Greenheck Fan 470658 MSX is its advanced motor technology. It is equipped with an energy-efficient direct drive motor, which minimizes energy consumption while delivering high airflow rates. The motor's design allows for quieter operation, making it ideal for environments where noise reduction is crucial.

The aerodynamic design of the fan blades is another hallmark of the Greenheck MSX. The blades are engineered to enhance performance by maximizing airflow while reducing turbulence. This design optimization results in increased efficiency and lower operational costs over time. Furthermore, the fan is capable of handling a wide range of air volumes, making it versatile for various installation requirements.

Durability is a key characteristic of the Greenheck Fan 470658 MSX. Constructed from high-quality materials, it can withstand harsh environmental conditions, including exposure to moisture and corrosive elements. The fan housing is designed to be robust, ensuring long-lasting performance and minimal maintenance needs.

In addition to its physical attributes, the MSX series comes equipped with smart technology features. The fan can be integrated with building management systems for real-time monitoring and control, helping facility managers optimize energy usage and maintain indoor air quality. The inclusion of variable speed controls further enhances adaptability, allowing users to adjust fan speed according to specific ventilation needs.

Safety features are also a priority with the Greenheck Fan 470658 MSX. The unit is designed with built-in protections against overheating and overcurrent, ensuring reliable operation under demanding conditions. Additionally, the fan meets rigorous safety standards and certifications, instilling confidence in its performance.

With its combination of efficiency, durability, and innovative features, the Greenheck Fan 470658 MSX is a top choice for those seeking reliable ventilation solutions. Its ability to deliver consistent airflow while minimizing energy consumption sets it apart in the competitive market of industrial fans, making it a valuable investment for businesses looking to enhance their air management systems.