Specifications

VCES-ERV-IOM-3B – Indoor ERV
17
D – Equivalent round duct diameter for determining mini-
mum lengths.
8” x 20” [203 x 508 mm] duct
D = 13.5” [343 mm]
Cf – Front clearance required for maintenance. See table
below.
12” x 26” [305 x 660 mm] duct
D = 19.0” [483 mm]
Appendix B: Typical Installation and Minimum
Distance Requirements
Balancing
damper
Flow
measuring
station
Backdraft
damper
2 D ft min.
2 D ft min.
2 D ft min.
5 D ft min.
5 D ft min.
Straight duct section required
to achieve good airflow rates.
(see Section 3.3)
cf in. minimum
Clearance required to
remove components for
maintenance
Minimum distance between exterior hoods
8 ft. or according to local building codes
All connections made
with flexible collars
supplied by others
Exhaust from
space
Intake from
outside
If electric preheat is used
locate it here (min. 24” from unit)
Balancing
damper
Flow
measuring
station
Exhaust outside
Supply to space
Figure B1: Indoor ERV minimum distance requirements
Table B1: Minimum Clearance Required for Access
ERV1000i ERV1500i ERV2000i ERV3000i
Front clearance (Cf) 42” [1,067 mm] 42” [1,067 mm] 48” [1,219 mm] 48” [1,219 mm]
Back clearance
24” [610 mm] required for
simplified access to service
exhaust fan
24” [610 mm] required for
simplified access to service
exhaust fan
24” [610 mm] required for
simplified access to service
exhaust fan
30” [762 mm] required for
simplified access to service
exhaust fan