Greenheck Fan 55, HRE-20, 90 Table Of Contents, Storage and Basic Operation, UpChecklist

TABLE OF CONTENTS

Storage and Basic Operation	. . . .	.	2		Typical Wiring Diagram		. . . . . . . . .	. . .	. 22
Installation	. . . .	.	3		Sensors and Lights			. 23. .-24.
Lifting	. . . .	.	3. .	.	. Remote Control Panel & Wiring			.25. -.27
Unit Weights & Recommended Roof					Sensors Mounted by Factory		. . . . . . . . . . . 28. .
Openings	. . . . 3. . . Start.					-Up Checklist
Roof Curb Mounting	. . . .		4. .	.	.Unit			. 29-30
Rail Mounting	. . . .	.	5		Evaporative Cooler			. .	.30
Ductwork Connections	. . . .		5. .	. .Optional Accessories			. . . . . . . . .	. . .	. 31
Electrical Information	. . . 6-7				Fan			.32.	.-33. . .
Service Clearances	. . .	.	8. .	.	Energy. . . . Recovery Wheel			. .	. 34
Dimensional Data/Access Door Description . 9.				Routine Maintenance Checklist				. . .	. 35
Evaporative Cooling Modules					Belts and Motors		. . . . . . . . .	. . .	. 36
Evap Module Installation and Start-Up	. 10.-11				Blower Wheel and Fasteners			. .	36. . . .
Water Supply Connection Location . . .	. . . .11.				Bearings, Filters and Door Seal			. . . 37. . .
Water Control Options	. 12-13			Energy Recovery Wheel Maintenance .				. . . 38.
Drain & Overflow Connection Locations	. . .14.				Accessing Energy Recovery Wheel . . .			. . . 38. .
Troubleshooting	. . . .	15			Removing Wheel Segments			. .	38. . . .
Maintenance	. . . .	16			Cleaning Wheel Segments			. .	.39. . . .
Optional Accessories	. 17-28			Parts List				. . .	40
Electric Heater Application/Operation .	. . . .	17.		Sequence of Operation . . . . . . . . . . . . . . . . 41. .
Frost Control Application/Operation . . . .	. . . .	18		Troubleshooting Airflow				. . . 42. . . .
Economizer Application/Operation	. . . .	19		Unit Troubleshooting			43 and Backcover
Variable Frequency Drives	. 20.-.	21. .		Warranty			. . . . . . Backcover

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..

BASIC OPERATION

The HRE brings in fresh, outdoor air and removes stale, exhaust air.. For summer operation, the exhaust air flows through an evaporative cooler (indirect) to lower the air temperature.. A sensible recovery wheel transfers energy from the exhaust air to the outdoor air at an efficiency of 70-80% to reduce the temperature of the outdoor air.. The outdoor air can then flow thru an optional evaporative cooler (direct) to further reduce the temperature of the outdoor air.. The sensible wheel also recovers heat from the exhaust in the winter to precondition the outdoor air.. Optional heaters are available after the wheel for final tempering..

2

	Sensible	Indirect	Exhaust Air
	Recovery	Evaporative
			from building
Exhaust Air	Wheel	Cooler
discharged outside

Outdoor Air	Optional
	Heater

Direct	Conditioned Air
Evaporative	sent to space
Cooler