Greenheck ERCH - Energy Recovery Unit with Packaged DX (468151) - Manual (Page 35)

35
Energy Recovery Unit with Packaged DX
External Filter Maintenance
Aluminum mesh, 2-inch deep filters are located in the supply weatherhood (if the
weatherhood option was purchased) . Filters should be checked and cleaned on
a regular basis for best efficiency . The frequency of cleaning depends upon the
cleanliness of the incoming air . These filters should be cleaned prior to start-up .
To access these filters, remove bottom bolt in the access door on the side of
the weatherhood . Slide the access door up and then pull bottom out to remove
door . Then, slide the filters out (see figure at right) .
Clean filters by rinsing with a mild detergent in warm water .
Outdoor air intake hood
mesh filter access
ROUTINE MAINTENANCE
Internal Filter Maintenance
The ERCH units will typically be provided with
2-inch, pleated filters in the outdoor air and
exhaust airstream . These filters should be
checked per a routine maintenance schedule
and replaced as necessary to ensure proper
airflow through the unit . See table at right
for pleated filter size and quantity for each
unit . Replacement filters shall be of same
performance and quality as factory installed filters . Filter type must be pleated design with integral metal grid .
Two acceptable filter replacements are Aerostat Series 400 or Farr 30/30
® .
Outdoor Air Filters: Access to the outdoor air filters is through the door labeled as “Filter Access” on the
outdoor air side of the unit .
Exhaust Air Filters: Access to the exhaust air filters is through the door labeled as “Filter Access” on the
exhaust air side of the unit .
Refer to Access Door Descriptions section for additional information on filter locations .
Filter Size and Quantities
Model
Internal
Filter Size
Quantity
Supply
Quantity
Exhaust
ERCH-20 20 in . x 20 in . 2 2
ERCH-45 20 in . x 25 in . 3 3
ERCH-55 16 in . x 20 in . 6 6
ERCH-90 20 in . x 20 in . 8 8