Table Of Contents; Storage; General - Greenheck ERH-20 Installation, Operation And Maintenance Manual

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Basic Operation . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . 3
Lifting . . . . . . . . . . . . . . . . . . . . . . . . . .3
Recommended Roof Openings . . . . . . .3
Unit Weights . . . . . . . . . . . . . . . . . . . . .3
Roof Curb Mounting . . . . . . . . . . . . . . .4
Duct Work Connections . . . . . . . . . . . . 4
Weatherhoods . . . . . . . . . . . . . . . . . . . 4
Electrical . . . . . . . . . . . . . . . . . . . . . . . .5
Service Clearances . . . . . . . . . . . . . . . . 6
Water Coil Location and Connection . . 7
Water Coil Recommendations . . . . . . . 7
Electric Heater Application/Operation .8
Frost Control Application/Operation . .9
Dirty Filter Switch Operation . . . . . . . .9
Economizer Application/Operation . . .10

STORAGE

When a unit is not going to be in service for an extended amount of time, certain procedures should be
followed to keep the fans in proper operating condition.
• Rotate fan wheel monthly and purge grease from bearings once every three months
• Cover unit with tarp to protect from dirt and moisture (Note: do not use a black tarp as this will promote
condensation)
• Energize fan motor once every three months
• Store belts flat to keep them from warping and stretching
• Store unit in location which does not have vibration
• After storage period, purge grease from fan bearings before putting fan into service
If storage of unit is in a humid, dusty or corrosive atmosphere, rotate the fan and purge the bearings once a
month. Improper storage which results in damage to the unit or components will void the warranty.

GENERAL

Greenheck Energy Recovery units with
Tempering are thoroughly inspected and test
run at the factory. However, damage may
occur during handling and shipping.
Consequently, it is important to inspect the
unit for visible and concealed damage before
beginning installation. Report any damage to
the shipper immediately. In addition, assure
all accessory items are present. Some
accessory items are stored inside the unit
during shipping. Care must be taken during
installation to prevent damage to units.
2

TABLE OF CONTENTS

Start Up Checks . . . . . . . . . . . . . . . . . . 11
Fan wheel . . . . . . . . . . . . . . . . . . . . . . 11
Fan RPM . . . . . . . . . . . . . . . . . . . . . . . 12
Energy Recovery Wheel . . . . . . . . . . . 12
Coils . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Routine Maintenance . . . . . . . . . . . 13-14
Belts . . . . . . . . . . . . . . . . . . . . . . . . . .13
Motors . . . . . . . . . . . . . . . . . . . . . . . . .13
Blower Wheel and Fasteners . . . . . . . .13
Vibration . . . . . . . . . . . . . . . . . . . . . . .14
Filters . . . . . . . . . . . . . . . . . . . . . . . . . 14
Coil Maintenance . . . . . . . . . . . . . . . . .15
Energy Recovery Wheel Maintenance . 16
Accessing Energy Recovery Wheel . . .16
Removing Wheel Segments . . . . . . . .17
Cleaning Wheel Segments . . . . . . . . .17
Parts List . . . . . . . . . . . . . . . . . . . . . . . .18
Unit Trouble Shooting . . . . . . . . . . .19-20