Greenheck Fan 470654 Set the Unit’s Operating Temperature, Flame Signal Check Pilot Ignition

Page 18

Set the Unit’s Operating Temperature

Set the operating temperature. The operating temperature setting depends on which Maxitrol controller is used.

Maxitrol Series 14 – 8 Terminals: The Maxitrol Series 14 should be set to the desired discharge temperature mode. Place dipswitch in the “UP” position for local control and in the “DOWN” position for remote control. Keep LFST dipswitch in the “UP” position at all times for 10 second delay.

Fig. A is required for remote control.

 

 

 

Terminal 3 - Remove wire to

 

 

 

send unit into maximum fire.

Discharge

 

 

Low fire

temp

 

 

 

 

setting

 

 

 

dipswitch

 

 

(LFST)

 

 

 

 

dipswitch

 

 

 

 

 

 

 

 

 

 

 

 

Set the discharge temp

 

 

Fig. A

 

Typical: 65°F

Remote

Minimum: Typical: 55°F

controller

Maximum: Typical: 90°F

 

Maxitrol Series 14 — 8 terminals

 

 

 

 

 

 

 

 

 

 

 

 

 

Maxitrol Series 44 – 9 Terminals: The Maxitrol

Series 44 should

 

 

 

 

 

 

be set to the

Set the space

desired discharge

temperature

temperature.

Typical: 70ºF

The temperature

 

 

 

selector is a stand-

 

 

 

alone dial. The

 

 

 

stand-alone dial

Series 44 Temperature Setting

may be mounted

(shown as space temperature control)

remotely.

 

 

 

 

 

 

Minimum discharge

Terminal 3 - Remove wire to

temperature setting

send unit into maximum fire.

(Typical: 50ºF)

 

 

 

 

 

 

 

Low fire time delay setting

Maximum discharge

(75% of maximum)

temperature setting

 

(Typical: 100ºF)

Maxitrol Series 44 — 9 terminals

18Model VSU Make-Up Air

Maxitrol SC25S: The SC25S is an analog signal converter that will change a 0-10 VDC or a 4-20 mA control signal provided by an owner supplied Building Management System into an output level capable of driving one or more modulating gas valves. The SC25S also limits the minimum and maximum discharge

air temperatures. Reference the unit-specific wiring diagram and Maxitrol data sheets included in the IOM packet.

Maxitrol SC25S

Flame Signal Check - Pilot Ignition

To measure the flame signal connect a standard DC voltmeter to the flame amplifier test jacks + and - (com) as shown to the

right. The flame signal should be above 1.25 VDC and steady.

Check the flame

 

signal with the

 

burner at pilot only,

 

minimum fire, mid

DC Voltmeter and

fire and high fire.

Flame Amplifier

Important

If the flame signal is not above 1.25 VDC and steady, consult the troubleshooting section.

®

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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.
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