Greenheck Fan Part #470655 manual Check the Blower Rotation, Air Volume Measurement and Check

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2.Check the Blower Rotation

2.Check the Blower Rotation

Open the blower access door and run the blower momentarily to determine the rotation. Arrows are placed on the blower scroll to indicate the proper direction or reference the example shown.

 

 

 

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Blower

Housing

Blower Rotation

5.Air Volume Measurement and Check

Measure the unit’s air volume (cfm) and compare it with it’s rated air volume. If the measured air volume is off, adjust the fan’s RPM by changing/adjusting the drive.

Note

The most accurate way to measure the air volume is by using a pitot traverse method downstream of the

Note

To reverse the rotation on three phase units, disconnect and lock-out the power, then interchange any two power leads.

Note

To reverse the rotation on single phase units, disconnect and lock-out the power, then rewire the motor per the manufacturer’s instructions.

Important

If the blower is rotating in the wrong direction, the unit will move some air, but will not perform as designed. Be sure to perform a visual inspection to guarantee the correct blower rotation.

3. Check for Vibration

Check for unusual noise, vibration or overheating of the bearings. Reference the Troubleshooting section for corrective actions.

Important

Excessive vibration may be experienced during the initial start-up. Left unchecked, it can cause a multitude of problems including structural and/or component failure.

Important

Generally, fan vibration and noise is transmitted to other parts of the building by the ductwork. To minimize this undesirable effect, the use of heavy canvas duct connectors is recommended.

4. Motor Check

Measure the motor’s voltage, amps and RPM. Compare to the specifications. Motor amps can be reduced by lowering the motor RPM or increasing system static pressure.

Important

Additional starters and overloads may be provided in the make-up air control center for optional exhaust blowers. Any additional overloads must be checked for proper voltage, amps and RPMs.

blower. Other methods can be used but should be proven and accurate.

Important

Changing the air volume can significantly increase the motor’s amps. If the air volume is changed, the motor’s amps must be checked to prevent overloading the motor.

Note

To ensure accuracy, the dampers are to be open when measuring the air volume.

6. Set-Up Optional Components

Adjust the settings on the optional components. See the Control Center Layout in the Reference section for location of optional components.

• Building Freeze Protection

Typical setting: 5 minutes; 45ºF (7ºC)

• Dirty Filter Gauge

Typical setting: Settings vary greatly for each unit. (see Reference section for adjusting information)

10 DGX Industrial Space Heating

®

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Contents If you smell gas 1.Open windows General Safety Information2.Do not touch electrical switches 3.Extinguish any open flameUnpacking Inspection and Maintenance during StorageReceiving HandlingInstallation Table of ContentsClearance to Combustibles / Service Clearances Troubleshooting2. Install Unit Installation of Indoor Unit1. Install Hangers 3. Seal Wall Opening2. Install Ductwork Installation of Arrangement DB / HZ1.Install Curb and/or Equipment Supports 4. Install Unit2. Install TSCP Installation of Diffuser and Remote Panel TSCP1. Install Diffuser Airflow3.Connect the Main Power Installation of Electrical Wiring1.Determine the Size of the Main Power Lines 4. Wire the Optional Convenience Outlet1.Determine the Supply Gas Requirements Installation of Gas Piping2.Install Additional Regulator if Required 3. Connect the Supply Gas Line5. Test the System for Leaks Start-Up- Blower4. Pipe the Optional Vent Line Pre Start-UpCheck3. Check for Vibration 5.Air Volume Measurement and Check2.Check the Blower Rotation 4. Motor Check1. Check the Supply Gas Pressure Start-UpDirect GasStart-UpDirect Gas • 100% Outside Air 4a. Set the Burner Air Pressure Differential5. Set the Low Fire Time Delay Start-UpDirect Gas 50/50 Recirculation4b. Set the Burner Air Pressure Differential 6. Set the Maximum Firing Rate7. Set the Minimum Firing Rate Start-UpDirect Gas continuedRegulators and Modulating Valves 8. Set Daytime Temperature10.Program the 7 Day Time Clock 11.Flame Signal Check9. Set Nighttime Temperature Flame Signal Check2.Switch S2 in Winter Mode Without 7-DayTimer1.Switch S2 in Summer Mode 3.Flame Safeguard FSG Sequence2.Switch S2 in Winter Mode Operation - Electrical Sequence With 7-DayTimer1.Switch S2 in Summer Mode 3.Flame Safeguard FSG SequenceTurn Supply Switch S2 On TroubleshootingBlower Does Not Operate ResetReference Blower Start-Up- Step #5 Motor OverampsTroubleshooting Reference Blower Start-Up- Step #2Troubleshooting Insufficient AirflowToo Much Airflow Reference Filters in the Maintenance sectionTroubleshooting Excessive Noise or VibrationReference Bearings in the Maintenance section Turn Heat Switch S4 On Heater Does Not OperateTroubleshooting Wire Heat Switch S4If problems remain, consult the factory TroubleshootingUncross wires and reconnect Heater Does Not OperateHeater Does Not Operate TroubleshootingAdjust drives as needed Reference Direct Gas Start-Up- Step #11Motors Maintenance - RoutineSnow Accumulation WheelsBearings FiltersBurner Maintenance - FallHigh Limit Gas TrainTypical Gas Train Layout 400 – 800 MBH ReferenceDGX Industrial Space Heating Reference Dirty Filter SwitchTypical Control Center Layout 28 DGX Industrial Space HeatingTypical setting varies Start-UpChecklistTypical setting 5 minutes 45ºF ReferenceMaintenance Log Maintenance Log Warranty Copyright 2012 Greenheck Fan Corporation