Greenheck Fan 470654 manual Attempts to light, but no flame Visible spark

Page 30

Troubleshooting

Heater Does Not Operate (Direct Spark)

Attempts to light, but no flame (Visible spark)

Is the low fire set properly?

Reference: Start-Up - Direct Gas, Set the Minimum Firing Rate, pg. 17

Yes

Check inlet gas pressure.

Reference: Start-Up - Direct Gas,

Check the Supply Gas Pressure, pg. 15

Gas pressure between the

minimum and maximum shown

on the direct gas label?

Yes

Air in the gas line?

No

Check burner pressure drop

Reference: Start-Up - Direct Gas, Check the

Optional High and Low Pressure Switches, pg. 15

No

No

Yes

Adjust the low fire setting.

Reference: Start-Up - Direct Gas, Set the Minimum Firing Rate, pg. 17

Correct gas pressure.

Reference: Start-Up - Direct Gas,

Check the Supply Gas Pressure, pg. 15

Purge gas line.

Pressure drop across the burner between 0.625 and 0.675 in. WC?

Yes

Proper spark?

Yes

No

No

Adjust burner baffles.

Reference: Start-Up - Direct Gas,

Check the Optional High and Low Gas Pressure Switches, pg. 15

Crossed flame and spark wires.

Uncross wires and reconnect.

Incorrect spark plug gap.

Set spark plug gap to 0.062 in.

Defective spark plug.

Replace spark plug.

With proper airflow, gas pressure and spark,

the unit should light.

If problems remain, consult the factory.

30Model VSU Make-Up Air

®

Page 29 Page 31
Image 30
Page 29 Page 31
Contents Installation, Operation and Maintenance Manual Model VSU General Safety InformationUnpacking Inspection and Maintenance during StorageReceiving HandlingTable of Contents Product Overview SubassembliesBurner, Blower and Control Center Section Open ViewBurner Subassembly Control CenterDampers Installation Complete Installation Installation of Optional Service PlatformService Platform Material List Assembly Figure CInstallation of Electrical Wiring Installation of Direct Gas Piping Install Additional Regulator if RequiredDetermine the Supply Gas Requirements Installation of Building Pressure Control optional Start-Up Checklist Unit Model NumberCheck blower rotation Check for vibration Supply fan RPM Start-Up Blower Set-Up Optional Components Check the Optional High and Low Gas Pressure SwitchesStart-Up Direct Gas Check the Supply Gas PressureSet the Maximum Firing Rate Maximum firing rate adjustmentSet the Burner Air Pressure Differential Measuring the Pressure DropRegulators and Modulating Valves Set the Minimum Firing RateSet the Unit’s Operating Temperature Flame Signal Check Pilot IgnitionMaxitrol Series 44 9 Terminals The Maxitrol Speed Variable Volume OperationOperation VAV Units optional ModulatingRecirculation Operation Operation Recirculating Units optionalOperation Electrical Electrical Sequence Exhaust Fan Contact S1 Closed optional3b. Heat Contact S4 Closed Direct Spark Flame Safeguard FSG Sequence3a. Heat Contact S4 Closed Pilot Ignition Heat Contact ClosedTroubleshooting Blower Does Not OperateMotor Overamps Insufficient Airflow Too Much AirflowExcessive Noise or Vibration Heater Does Not Operate Pilot Ignition Does not attempt to light No visible sparkAttempts to light, but no pilot visible spark Visible pilot Between 0.625 and 0.675 in. WC?Heater Does Not Operate Direct Spark Attempts to light, but no flame Visible spark Motors Maintenance RoutineBelt Drives WheelsMaintenance Fall Reference Typical Gas Train Layout with Direct Spark Ignition Heat Relay allows power to pass to heating controls Dirty Filter SwitchFan Relay allows power to pass to energize motor starter Control Center LayoutMaintenance Log WarrantyDateTime 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.
Top Page Image Contents