Reference

Typical Gas Train Layout 400 – 800 MBH

Safety Shut-Off Valves

Pressure Test Port

Safety Shut-Off Valves

Pressure Test Port

Burner Differential Pressure Sensor

	Pilot Solenoid
	Pilot Gas Pressure	Pilot Regulator
	Test Port	Pilot Regulator
	Test Port
Modulating		Manual Pilot
Valve		Manual Pilot
Valve		Shut-Off Valve

High Gas Pressure

Switch (optional)

Burner Manual Shut-Off Valve

Low Gas Pressure

Switch (optional)

Typical Gas Train Layout > 800 MBH

Burner Differential

Pressure Sensor

Burner Manual

Shut-Off Valve

High Gas Pressure

Switch (optional)

Burner Gas

Pressure Test Port

Pilot Solenoid

Pilot Gas Pressure

Test Port

Modulating/Regulator	Low Gas Pressure
Valve	Low Gas Pressure
Valve		Switch (optional)
		Switch (optional)

Safety Shut-Off Valves

Pilot Regulator

Manual Pilot

Shut-Off Valve

DGX Industrial Space Heating 27

Page 27

Image 27

Greenheck Fan Part #470655 manual Reference, Typical Gas Train Layout 400 – 800 MBH, DGX Industrial Space Heating

Contents

3.Extinguish any open flame General Safety Information2.Do not touch electrical switches If you smell gas 1.Open windows Handling Inspection and Maintenance during StorageReceiving Unpacking Troubleshooting Table of ContentsClearance to Combustibles / Service Clearances Installation 3. Seal Wall Opening Installation of Indoor Unit1. Install Hangers 2. Install Unit 4. Install Unit Installation of Arrangement DB / HZ1.Install Curb and/or Equipment Supports 2. Install Ductwork Airflow Installation of Diffuser and Remote Panel TSCP1. Install Diffuser 2. Install TSCP 4. Wire the Optional Convenience Outlet Installation of Electrical Wiring1.Determine the Size of the Main Power Lines 3.Connect the Main Power 3. Connect the Supply Gas Line Installation of Gas Piping2.Install Additional Regulator if Required 1.Determine the Supply Gas Requirements Pre Start-UpCheck Start-Up- Blower4. Pipe the Optional Vent Line 5. Test the System for Leaks 4. Motor Check 5.Air Volume Measurement and Check2.Check the Blower Rotation 3. Check for Vibration 4a. Set the Burner Air Pressure Differential Start-UpDirect GasStart-UpDirect Gas • 100% Outside Air 1. Check the Supply Gas Pressure 6. Set the Maximum Firing Rate Start-UpDirect Gas 50/50 Recirculation4b. Set the Burner Air Pressure Differential 5. Set the Low Fire Time Delay 8. Set Daytime Temperature Start-UpDirect Gas continuedRegulators and Modulating Valves 7. Set the Minimum Firing Rate Flame Signal Check 11.Flame Signal Check9. Set Nighttime Temperature 10.Program the 7 Day Time Clock 3.Flame Safeguard FSG Sequence Without 7-DayTimer1.Switch S2 in Summer Mode 2.Switch S2 in Winter Mode 3.Flame Safeguard FSG Sequence Operation - Electrical Sequence With 7-DayTimer1.Switch S2 in Summer Mode 2.Switch S2 in Winter Mode Reset TroubleshootingBlower Does Not Operate Turn Supply Switch S2 On Reference Blower Start-Up- Step #2 Motor OverampsTroubleshooting Reference Blower Start-Up- Step #5 Reference Filters in the Maintenance section Insufficient AirflowToo Much Airflow Troubleshooting Excessive Noise or Vibration TroubleshootingReference Bearings in the Maintenance section Wire Heat Switch S4 Heater Does Not OperateTroubleshooting Turn Heat Switch S4 On Heater Does Not Operate TroubleshootingUncross wires and reconnect If problems remain, consult the factory Reference Direct Gas Start-Up- Step #11 TroubleshootingAdjust drives as needed Heater Does Not Operate Wheels Maintenance - RoutineSnow Accumulation Motors Filters Bearings Gas Train Maintenance - FallHigh Limit Burner Reference Typical Gas Train Layout 400 – 800 MBHDGX Industrial Space Heating 28 DGX Industrial Space Heating Dirty Filter SwitchTypical Control Center Layout Reference Reference Start-UpChecklistTypical setting 5 minutes 45ºF Typical setting varies Maintenance Log Maintenance Log Copyright 2012 Greenheck Fan Corporation Warranty