Greenheck ERCH - Energy Recovery Unit with Packaged DX (468151) - Manual (Page 37)

37
Energy Recovery Unit with Packaged DX
Access to wheel through
outdoor air filter door
The ERCH units have one energy recovery wheel . Open the outdoor
air filter door to access the wheel . For the ERCH-20 and ERCH-45
models, the wheel cassette slides out . Due to the size and weight of
the ERCH-55 and ERCH-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 ERCH-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