Greenheck Fan ERV-251, ERV-581, ERV-582 Accessing the Energy Recovery Wheel in Models ERV-522 and

Accessing the Energy Recovery Wheel in Models ERV-522 and 582

Disconnect power to the ERV. Remove access panel(s) labeled “Energy Wheel Cassette Access”, which reveals the energy wheel cassette. There are additional panels that must be removed in order to slide out the cassettes. (See pictures providing additional visual information).

Unplug the wheel drive motor and pull the cassette halfway out as shown.

NOTE: ERV-522 has two energy wheels with access panels for both wheels. Wheels slide out on opposite corners.

Energy recovery wheels for ERV-582 are hard-wired and not designed to slide out.

This panel must be removed before the energy wheel can slide out. (ERV-522 only)

28Model ERV Energy Recovery Unit

Removing the Energy Recovery Wheel in ERV-251

First, remove the drive belts and the collars in both bearings. On the pulley side of the cassette, remove the four (4) fasteners that hold the bearing support channel in place. Once the bearing support is removed the wheel can be pulled from the cassette. To replace the wheel, reverse this procedure.

Removing the Energy Recovery Wheel Segments ERV-361, 521, 581, 522 and 582

(stainless steel rim)

Steel retainers are located on the inside of the wheel rim. Push the retainer towards the center of the wheel, then lift up and away to release segments.

	Bracket Segment
	Retainer
	Lift away from
	segment
Catch Segment
Retainer	Inside of wheel rim
	Spoke
	Push toward center

Important! Place retainers back in the original position before rotating the energy recovery wheel, otherwise damage to retainer will occur.

Wheel segment removed