Greenheck Fan Part #470655 Installation of Electrical Wiring, Connect the Main Power, danger

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Installation of Electrical Wiring

Installation of Electrical Wiring

Important

Before connecting power to the unit, read and understand the following instructions and wiring diagrams. Complete wiring diagrams are attached on the inside of the control center door(s).

Important

All wiring should be done in accordance with the latest edition of the National Electrical Code ANSI/ NFPA-70 and any local codes that may apply. In Canada, wiring should be done in accordance with the Canadian Electrical Code.

caution

If replacement wire is required, it must have a temperature rating of at least 105ºC, except for energy cut-off or sensor lead wire which must be rated to 150ºC.

Important

The equipment must be properly grounded. Any wiring running through the unit in the airstream must be protected by metal conduit, metal clad cable or raceways.

danger

High voltage electrical input is needed for this equipment. This work should be performed by a qualified electrician.

caution

Any wiring deviations may result in personal injury or property damage. Manufacturer is not responsible for any damage to, or failure of the unit caused by incorrect final wiring.

Important

Manufacturer’s standard control voltage is 24 VAC. Control wire resistance should not exceed 0.75 ohms (approximately 285 feet total length for 14 gauge wire; 455 feet total length for 12 gauge wire). If the resistance exceeds 0.75 ohms an industrial-style, plug-in relay should be wired in place of the remote switch. The relay must be rated for at least 5 amps and have a 24 VAC coil. Failure to comply with these guidelines may cause motor starters to chatter or not pull in, resulting in contactor failures and/or motor failures.

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1.Determine the Size of the Main Power Lines

The unit’s nameplate states the voltage and the unit’s MCA. The main power lines to the unit should be sized accordingly. The nameplate is located on the outside of the unit on the control panel side.

Voltage, Hertz, Phase

VOLTS

 

 

HZ

 

 

PH

 

SUP HP

 

 

EXH HP

 

 

 

 

 

 

MCA

 

 

 

 

MOP

 

 

 

 

 

 

 

 

Unit’s Total MCA

Electrical Nameplate

2.Provide the Opening(s) for the Electrical Connections

Electrical openings vary by unit size and arrangement and are field supplied.

3.Connect the Main Power

Connect the main power lines to the disconnect switch and main grounding lug(s). Torque field connections to 20 in.-lbs.

4. Wire the Optional Convenience Outlet

The convenience outlet requires a separate 115V power supply circuit. The circuit must include short circuit protection which may need to be supplied by others.

5. Wire Accessories

Reference the Ladder Diagram on the inside of the control center door for correct wiring of the following accessories:

•Summer/Off/Winter Switch

•Indicating Lights

•Dirty Filter Indicator

•Industrial Space Heat TSCP

NOTE

TSCP has number-to-number wiring.

DGX Industrial Space Heating 7

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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
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