SERVICE CLEARANCES FOR ERV-251, 361, 521 AND 581
ACCESS PANEL LOCATIONS
ERV units require minimum clearances to perform
routine maintenance, such as filter replacement, energy
wheel cassette inspection, and fan belt adjustment.
Blower and motor assemblies, energy recovery wheel
cassette and filter sections are always provided with a
service door or panel for proper component access.
Clearances for component removal are shown below.
Model R S T
251 32 30 30
361 44 30 30
521 60 40 40
581 65 40 40
ERV-251, 361, 521 and 581 Recommend Clearances
All dimensions shown are in inches.
9
1
1
4
3
4
2
2
3
4
1
2
3
Access panel for:
•Outdoor air blower and motor
•Energy wheel cassette
Access panel for:
•Energy wheel cassette
•Internal Filters
•Outdoor air inlet damper
•Frost control
•Outdoor air sensors
Access panel for:
•Main disconnect
•Electrical control center
•Internal filters
Access panel for:
•Exhaust air blower and motor
Arrangement A
Arrangement A
Arrangement B, C or D
Arrangement B, C or D
T
T
T
R
R
S