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Access to wheel through
outdoor air filter door
The HRE units have one energy recovery wheel. Open the outdoor
air filter door to access the wheel. For the HRE-20 and HRE-45
models, the wheel cassette slides out. Due to the size and weight
of the HRE-55 and HRE-90 wheels, they remain stationary and all
maintenance is performed in place. There is room inside the unit to
perform energy recovery wheel servicing. Filters must be removed to
access stationary wheels.
**WARNING: Disconnect power to the unit before performing
any type of service.
ACCESSING ENERGY RECOVERY WHEEL
Energy Recovery Wheel Maintenance
Annual inspection of the energy recovery wheel is recommended. Units
ventilating smoking lounges and other non-clean air spaces should
have energy recovery wheel inspections more often based upon need.
Inspections for smoke ventilation applications are recommended
bimonthly to quarterly until a regular schedule can be established.
ROUTINE MAINTENANCE
IMPORTANT! PLACE RETAINERS BACK IN THE
ORIGINAL POSITION BEFORE
ROTATING THE ENERGY RECOVERY WHEEL.
OTHERWISE DAMAGE TO RETAINER WILL
OCCUR.
Bracket Segment Retainer
Lift Away
From Segment
Catch-
Segment Retainer
Push Toward Center
Center of Wheel
Spoke
Inside of Wheel Rim
Models HRE-20, 45, 55, & 90
Steel retainers are located on the
inside of the wheel rim (see diagram
at right). Push the retainer toward
center of wheel, then lift up and
away to release segments (see
below).
REMOVING THE ENERGY RECOVERY WHEEL SEGMENTS
Wheel segment removed