Table of Contents
Basic Operation |
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Installation |
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Supplemental Installation, Operation and |
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Maintenance Manuals |
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Installation Concerns | . | . | . | 3 | |
Lifting |
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Roof Curb and Rail Mounting |
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Recommended Roof Opening |
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Roof Curb Mounting |
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Curb Dimensions and Weights . . . . | . | . | . | 5 | |
Ductwork Connections |
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Rail Mounting / Layout |
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Service Clearances | . | . | . | 7 | |
Electrical Information |
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General Electrical Information |
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Control Center Components | . | . | . | 9 | |
Electric Heater Application/Operation . | . | . | . | 9 | |
Unit Accessories | . | . | . | 9 | |
Access Panel Description and Location | . . | ||||
Dimensional Data |
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Optional Accessories |
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Frost Control Application/Operation . . | . | . | . 14 | ||
Economizer Application/Operation |
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Variable Frequency Drives and Wiring . | . . | ||||
Typical Wiring Diagram | . | . | . 18 | ||
Sensors and Lights | . | . | . 19 | ||
Remote Control Panel and Wiring . . . | . | . | . 20 | ||
Sensors Mounted by Factory | . | . | . 21 | ||
Sequence of Operation |
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Unit | . | . | . | 22 | |
Optional Accessories | . | . | . 23 | ||
Fan |
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Energy Recovery Wheel | . | . | . 25 | ||
Routine Maintenance Checklist |
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General |
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Fan Belts | . | . | . 26 | ||
Fan Motors | . | . | . 26 | ||
Fan Wheel and Fasteners |
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Fan Bearings |
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Filters |
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Door Seal Maintenance | . | . | . 27 | ||
Energy Recovery Wheel Maintenance |
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Accessing Energy Recovery Wheel |
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Removing Wheel Segments |
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Cleaning Wheel Segments | . | . | . 29 | ||
Wheel Belt |
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Wheel Bearing | . | . | . 29 | ||
Parts List |
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Sequence of Operation | . | . | . | 31 | |
Troubleshooting – Airflow | . | . | . | 32 | |
Troubleshooting – Unit |
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Maintenance Log | . | . | . | 35 | |
Warranty | Backcover | ||||
Basic Operation
The ERV brings in fresh, outdoor air and removes stale, exhaust air. Prior to discharging the exhaust air, the energy recovery wheel transfers energy from the exhaust air to the outdoor air at an efficiency of
| Energy Recovery | Exhaust air |
Exhaust air | Wheel | from building |
discharged |
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outside |
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Outdoor
air
Preconditioned air
sent to space
Supplemental Installation,
Operation and Maintenance
Manuals
Refer to the following Installation, Operation and Maintenance Manuals for additional details:
Part #460988 —
Installation
The system design and installation should follow accepted industry practice, such as described in the ASHRAE Handbook.
Adequate space should be left around the unit for filter replacement and maintenance. Sufficient space should be provided on the side of the unit for routine service and component removal should that become necessary.
See Service Clearances and Access Panel Description sections for more details.
Warning
All factory provided lifting lugs must be used when lifting the unit. Failure to comply with this safety precaution could result in property damage, serious injury or death.
Model ERV Energy Recovery Unit 3
