Greenheck DG / DGX with Direct Spark (464043 IOM) (Pre-2008) - Manual (Page 2)

2
TABLE OF CONTENTS
Installation
Clearance to Combustibles &
Service Clearances . . . . . . . . . . . . . . . .2
Unit - Indoor . . . . . . . . . . . . . . . . . . . . . . .3
Unit - Arrangement DB/HZ . . . . . . . . . . . .4
Unit - Arrangement DBC . . . . . . . . . . . .5-6
Evaporative Module . . . . . . . . . . . . . . . . . .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
I
Start-Up
Blower . . . . . . . . . . . . . . . . . . . . . . . . .19-20
Direct Gas . . . . . . . . . . . . . . . . . . . . . .21-25
Evaporative Cooling . . . . . . . . . . . . . . . .26
Water Wizard™ . . . . . . . . . . . . . . . . .27-28
S
Operation
VAV and Recirculation Units . . . . . . .29-30
Electrical . . . . . . . . . . . . . . . . . . . . . . . . .31
Water Wizard™ . . . . . . . . . . . . . . . . . . . .32
O
Troubleshooting
Blower . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Heater . . . . . . . . . . . . . . . . . . . . . . . . .34-35
Evaporative Cooling . . . . . . . . . . . . . . . .36
Water Wizard™ . . . . . . . . . . . . . . . . . . . .37
Vibration . . . . . . . . . . . . . . . . . . . . . . . . . .38
T
Reference
Gas Train Layout . . . . . . . . . . . . . . . . . . .44
Control Center Layout . . . . . . . . . . . . . . .45
Dirty Filter Switch . . . . . . . . . . . . . . . . . .45
Start-Up Checklist . . . . . . . . . . . . . . . . . .46
Maintenance Log . . . . . . . . . . . . . . . . . . .47
Warranty . . . . . . . . . . . . . . . . . .Backcover
Maintenance
Routine . . . . . . . . . . . . . . . . . . . . . . . .39-41
Fall
. . . . . . . . . . . . . . . . . . . . . . . . .42-43
M
R
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.
NOTE!
Improper storage which results in damage to the
unit will void the warranty.
Clearance to Combustibles / Service Clearances
Floor Top Sides Ends
Insulated Units 0 inches 0 inches 0 inches 0 inches
Non Insulated Units 0 inches 6 inches 6 inches 6 inches
Clearance to combustibles is defined as the minimum distance required between the heater and adjacent combustible
surfaces to ensure the adjacent surface’s temperature does not exceed 90 degrees above the ambient temperature.
Recommended Minimum Service Clearances
Housing 32 and less 42 inches on the controls side of the unit
Housing 35 and higher 48 inches on the controls side of the unit
Clearances for component removal may be greater than the service clearances listed.