Residential HRV/ERV
18
Drain Connections (HRV Models only ERV Models do not require
plumbing.)
Regardless of mounting method, the device should be installed level to ensure that
condensation (produced during a defrost cycle) drains from the unit. The water should flow
into a nearby drain or bucket.
CAUTION: HRV must be installed level to ensure proper condensate drainage. Due to the
broad range of installation and operation conditions, consider the possibility of condensation
forming on either the unit or connecting ducting. Objects below the installation may be
exposed to condensate.
All HRV’s have two holes for the drains. For the models H190, position the plastic drain over
the mathed point in the drain par and push through the polystyrene to expose the hole.
For all other models the holes are pre-punched. Insert the drain spout through the hole in
the drain pan. Be sure to install the “O ring” to seal each spout to the pan. Hand tighten the
washer and lock nut that holds the drain spout in place.
Construct a P-Trap using the plastic tee connector. Cut two lengths of drain hose and connect
the other ends to the two drain spouts. Position the “T” fitting to point upward and connect
the drain line. Tape or fasten the base to avoid kinks.
Connect the drain hoses to the building’s drainage system, as shown in the following
diagrams. No hard pipe connections to the unit.
After the drain connection is complete, pour a cup of water into the drain pan of the unit.
This creates a water seal that will prevent odors from being drawn up the hose and into the
fresh air supply of the HRV.
CAUTION: Drain trap and tubing MUST be below bottom of door with 1/4” per foot
downwards slope away from the unit.
Connect to the building’s
drainage system
End side to connect to the
3/8” - 1/2” universal drain
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