Greenheck DGX Installation, Operation And Maintenance Manual page 2

Installation
I
Unit - Indoor . . . . . . . . . . . . . . . . . . . . . . .3
Unit - Arrangement DB/HZ . . . . . . . . . . . .4
Unit - Arrangement DBC . . . . . . . . . . . .5-6
Evaporative Cooler . . . . . . . . . . . . . . . . . .7
Electrical Wiring . . . . . . . . . . . . . . . . . . .8-9
Direct Gas Piping . . . . . . . . . . . . . . . .10-11
Evaporative Cooler Piping . . . . . . . . .12-13
Water Wizard™ . . . . . . . . . . . . . . . . . . . .14
Direct Expansion (DX) Coil Piping . . .15-16
Chilled Water Coil Piping . . . . . . . . . . . .17
Building Pressure Control . . . . . . . . . . . .18
Start-Up
S
Blower . . . . . . . . . . . . . . . . . . . . . . . . .19-20
Direct Gas . . . . . . . . . . . . . . . . . . . . . .21-25
Evaporative Cooling . . . . . . . . . . . . . . . .26
Water Wizard™ . . . . . . . . . . . . . . . . .27-28
Operation
O
Recirculating/VAV Units . . . . . . . . . . . . .29
Electrical . . . . . . . . . . . . . . . . . . . . . . . . .30
Water Wizard™ . . . . . . . . . . . . . . . . . . . .31
STORAGE
When a unit is not going to be in service for an extended period of time, certain procedures should be followed
to keep the unit in proper operating condition:
• Plug all piping
• Rotate fan wheel monthly and purge bearings once every one to three months (depending on environment).
• Energize fan motor once every three months
• Store belts flat to keep them from warping and stretching
• Store unit in location without vibration
• Cover unit with tarp to protect from dirt and moisture
• After storage period, purge grease before putting fan into service
NOTE!
Do not cover unit with a black tarp, this would
promote condensation.
TABLE OF CONTENTS
T
M
R
2
Troubleshooting
Blower . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Heater . . . . . . . . . . . . . . . . . . . . . . . . .33-34
Evaporative Cooling . . . . . . . . . . . . . . . .35
Vibration . . . . . . . . . . . . . . . . . . . . . . . . . .36
Water Wizard™ . . . . . . . . . . . . . . . . . . . .37
Maintenance
Routine . . . . . . . . . . . . . . . . . . . . . . . .38-40
Fall . . . . . . . . . . . . . . . . . . . . . . . . .41-42
Log . . . . . . . . . . . . . . . . . . . . . . . . .43-45
Reference
Gas Train Layout . . . . . . . . . . . . . . . . . . .46
Control Center Layout . . . . . . . . . . . . . . .47
NOTE!
Improper storage which results in damage to the
unit will void the warranty.