Greenheck Fan Part #470655 manual Insufficient Airflow, Too Much Airflow, Troubleshooting

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Troubleshooting

Insufficient Airflow

Damper(s) not fully opened?

System static losses too high?

Blower speed too low?

Filters dirty or clogged?

Leaks in ductwork?

Belt slipping?

Yes

Everything is working properly,

consult factory.

Too Much Airflow

Blower speed too high?

Filters not in place?

Insufficient external static

pressure?

Everything is working properly,

consult factory.

Yes

Adjust damper linkage(s), or replace faulty actuator(s).

(Damper actuators may take a few minutes to open)

Reduce losses by improving ductwork.

Adjust drives as needed.

Clean or replace filters.

(Reference Filters in the Maintenance section).

Repair leaks.

Replace or tighten belt.

(Reference V-Belt Drives in the Maintenance section)

Adjust drives as needed.

(Reference Blower Start-Up – Step #5)

Install filters.

Increase external static pressure.

DGX Industrial Space Heating 19

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Contents 3.Extinguish any open flame General Safety Information2.Do not touch electrical switches If you smell gas 1.Open windowsHandling Inspection and Maintenance during StorageReceiving UnpackingTroubleshooting Table of ContentsClearance to Combustibles / Service Clearances Installation3. Seal Wall Opening Installation of Indoor Unit1. Install Hangers 2. Install Unit4. Install Unit Installation of Arrangement DB / HZ1.Install Curb and/or Equipment Supports 2. Install DuctworkAirflow Installation of Diffuser and Remote Panel TSCP1. Install Diffuser 2. Install TSCP4. Wire the Optional Convenience Outlet Installation of Electrical Wiring1.Determine the Size of the Main Power Lines 3.Connect the Main Power3. Connect the Supply Gas Line Installation of Gas Piping2.Install Additional Regulator if Required 1.Determine the Supply Gas RequirementsPre Start-UpCheck Start-Up- Blower4. Pipe the Optional Vent Line 5. Test the System for Leaks4. Motor Check 5.Air Volume Measurement and Check2.Check the Blower Rotation 3. Check for Vibration4a. Set the Burner Air Pressure Differential Start-UpDirect GasStart-UpDirect Gas • 100% Outside Air 1. Check the Supply Gas Pressure6. Set the Maximum Firing Rate Start-UpDirect Gas 50/50 Recirculation4b. Set the Burner Air Pressure Differential 5. Set the Low Fire Time Delay8. Set Daytime Temperature Start-UpDirect Gas continuedRegulators and Modulating Valves 7. Set the Minimum Firing RateFlame Signal Check 11.Flame Signal Check9. Set Nighttime Temperature 10.Program the 7 Day Time Clock3.Flame Safeguard FSG Sequence Without 7-DayTimer1.Switch S2 in Summer Mode 2.Switch S2 in Winter Mode3.Flame Safeguard FSG Sequence Operation - Electrical Sequence With 7-DayTimer1.Switch S2 in Summer Mode 2.Switch S2 in Winter ModeReset TroubleshootingBlower Does Not Operate Turn Supply Switch S2 OnReference Blower Start-Up- Step #2 Motor OverampsTroubleshooting Reference Blower Start-Up- Step #5Reference Filters in the Maintenance section Insufficient AirflowToo Much Airflow TroubleshootingTroubleshooting Excessive Noise or VibrationReference Bearings in the Maintenance section Wire Heat Switch S4 Heater Does Not OperateTroubleshooting Turn Heat Switch S4 OnHeater Does Not Operate TroubleshootingUncross wires and reconnect If problems remain, consult the factoryReference Direct Gas Start-Up- Step #11 TroubleshootingAdjust drives as needed Heater Does Not OperateWheels Maintenance - RoutineSnow Accumulation MotorsFilters BearingsGas Train Maintenance - FallHigh Limit BurnerTypical Gas Train Layout 400 – 800 MBH ReferenceDGX Industrial Space Heating 28 DGX Industrial Space Heating Dirty Filter SwitchTypical Control Center Layout ReferenceReference Start-UpChecklistTypical setting 5 minutes 45ºF Typical setting variesMaintenance Log Maintenance Log Copyright 2012 Greenheck Fan Corporation Warranty