Greenheck ERCH-20 Installation, Operation And Maintenance Manual page 12

Service Clearances / Access Panel - Integral Air-Cooled Packaged DX
Units require minimum clearances for access on all sides for routine maintenance. Filter replacement, drain pan
inspection and cleaning, energy wheel cassette inspection, fan bearing lubrication and belt adjustment are examples
of routine maintenance that must be performed. Blower and motor assemblies, energy recovery wheel cassette, coil
and filter sections are always provided with a service door or panel for proper component access.
*Cassette removal only available
on housing sizes 20 and 45.
EXHAUST AIR
WEATHERHOOD
B
ACCESS DOOR
OUTDOOR
WEATHERHOOD
36 inches
CLEARANCE
WITHOUT
VESTIBULE
Drawing shows both heating coil and indirect gas furnace options. Electric heat is also available. Only one can
be selected. Optional hot gas reheat coil also shown, available with split or packaged DX.
10 Energy Recovery Ventilator with Heating and Cooling General Description - NOT model specific
A
ELECTRICAL BOX
ACCESS PANEL
PIPING VESTIBULE
(OPTIONAL)
Model
ERCH-20
ERCH-45
ERCH-55
ERCH-90
ACCESS PANEL ACCESS PANEL
ACCESS PANEL
48 inches
CLEARANCE
WITH
VESTIBULE
A (in.) B (in.)
48 36
64 42
42 42
42 48
42 inches
MINIMUM
®