Greenheck Fan Complete Guide to the Greenheck Make-Up Air Unit Manual
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Part #470654

VSU Make-Up Air Unit

®

with Direct-Fired Gas Heater

 

Installation, Operation and Maintenance Manual

Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage! Retain instructions for future reference.

Model VSU

General Safety Information

Only qualified personnel should install this unit. Personnel should have a clear understanding of these instructions and should be aware of general safety precautions. Improper installation can result in electric shock, possible injury due to coming in contact with moving parts, as well as other potential hazards. Other considerations may be required if high winds or seismic activity are present. If more information is needed, contact a licensed professional engineer before moving forward.

1.Follow all local electrical and safety codes, as well as the National Electrical Code (NEC), the National Fire Protection Agency (NFPA), where applicable.

Follow the Canadian Electric Code (CEC) in Canada.

2.The rotation of the wheel is critical. It must be free to rotate without striking or rubbing any stationary objects.

3.Motor must be securely and adequately grounded.

4.Do not spin fan wheel faster than the maximum cataloged fan rpm. Adjustments to fan speed significantly affects motor load. If the fan RPM is changed, the motor current should be checked to make sure it is not exceeding the motor nameplate amps.

5.Do not allow the power cable to kink or come in contact with oil, grease, hot surfaces, or chemicals. Replace cord immediately if damaged.

6.Verify that the power source is compatible with the equipment.

7.Never open blower access doors while the fan is running.

DANGER

Always disconnect power before working on or near a unit. Lock and tag the disconnect switch or breaker to prevent accidental power up.

CAUTION

When servicing the unit, motor may be hot enough to cause pain or injury. Allow motor to cool before servicing.

FOR YOUR SAFETY

If you smell gas:

1.Open windows.

2.Do not touch electrical switches.

3.Extinguish any open flame.

4.Immediately call your gas supplier.

FOR YOUR SAFETY

The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous.

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating and maintenance instructions thoroughly before installing or servicing this equipment.

1Model VSU Make-Up Air Unit

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Contents Model VSU General Safety Information Installation, Operation and Maintenance ManualReceiving Inspection and Maintenance during StorageUnpacking HandlingTable of Contents Subassemblies Product OverviewOpen View Burner, Blower and Control Center SectionControl Center Burner SubassemblyDampers Installation Installation of Optional Service Platform Complete InstallationService Platform Material List Figure C AssemblyInstallation of Electrical Wiring Install Additional Regulator if Required Installation of Direct Gas PipingDetermine the Supply Gas Requirements Installation of Building Pressure Control optional Unit Model Number Start-Up ChecklistCheck blower rotation Check for vibration Supply fan RPM Start-Up Blower Start-Up Direct Gas Check the Optional High and Low Gas Pressure SwitchesSet-Up Optional Components Check the Supply Gas PressureSet the Burner Air Pressure Differential Maximum firing rate adjustmentSet the Maximum Firing Rate Measuring the Pressure DropSet the Minimum Firing Rate Regulators and Modulating ValvesFlame Signal Check Pilot Ignition Set the Unit’s Operating TemperatureMaxitrol Series 44 9 Terminals The Maxitrol Operation VAV Units optional Variable Volume OperationSpeed ModulatingOperation Electrical Operation Recirculating Units optionalRecirculation Operation Electrical Sequence Exhaust Fan Contact S1 Closed optional3a. Heat Contact S4 Closed Pilot Ignition Flame Safeguard FSG Sequence3b. Heat Contact S4 Closed Direct Spark Heat Contact ClosedBlower Does Not Operate TroubleshootingMotor Overamps Too Much Airflow Insufficient AirflowExcessive Noise or Vibration Does not attempt to light No visible spark Heater Does Not Operate Pilot IgnitionAttempts to light, but no pilot visible spark Between 0.625 and 0.675 in. WC? Visible pilotHeater Does Not Operate Direct Spark Attempts to light, but no flame Visible spark Belt Drives Maintenance RoutineMotors WheelsMaintenance Fall Reference Typical Gas Train Layout with Direct Spark Ignition Fan Relay allows power to pass to energize motor starter Dirty Filter SwitchHeat Relay allows power to pass to heating controls Control Center LayoutWarranty Maintenance LogDateTime AM/PM

470654 specifications

Greenheck Fan 470654 is a cutting-edge ventilation solution designed to meet the demanding requirements of commercial and industrial applications. Renowned for its reliability and efficiency, this fan model integrates advanced technologies and engineering to provide optimal air movement and control.

One of the standout features of the Greenheck Fan 470654 is its robust construction. Designed with high-quality materials, the fan promotes longevity and durability, making it suitable for use in tough environments. This fan features a heavy-gauge steel housing that minimizes vibration and enhances noise reduction, contributing to a quieter operation, a critical factor in maintaining a serene working environment.

The fan is equipped with a powerful motor that ensures efficient airflow, achieving high performance while consuming minimal energy. This energy efficiency is emphasized through the use of advanced motor technology, including variable frequency drive (VFD) compatibility. VFDs allow for precise control of the fan speed, enabling adjustments based on system demand, thus significantly reducing energy consumption and operating costs.

In terms of airflow performance, the Greenheck Fan 470654 is engineered to provide a high volume of air movement while maintaining static pressure. Its aerodynamic design minimizes resistance, enhancing overall efficiency. The fan is designed to operate across a range of static pressures, making it versatile for different applications, from commercial kitchens to large manufacturing facilities.

Additionally, the fan's installation is straightforward, thanks to its user-centric design. The model incorporates mounting brackets and options for various duct configurations, ensuring seamless integration into existing systems. Maintenance is also made easier with accessible components, allowing technicians to perform regular checks and upkeep without extensive downtime.

Safety features are a priority in the design of the Greenheck Fan 470654. It includes protective features such as thermal overload protection to prevent motor damage and extend operational life. The fan's design also adheres to industry standards and regulations, providing peace of mind for users.

In summary, the Greenheck Fan 470654 is a well-engineered solution that combines durability, efficiency, and advanced technology to deliver superior performance in ventilation applications. With its powerful motor, energy-saving capabilities, and ease of installation and maintenance, it stands out as a reliable choice for professionals seeking optimal airflow management.
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