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CHOOSE FAD FRESH AIR DAMPER LOCATION:
The fresh air damper can be located anywhere in the fresh air inlet duct. Minimize the length of the inlet
duct to improve airow and improve system eciency. It is recommended that the damper be as close to
the return air plenum and the HHSC+ as possible, and that the inlet duct connect to the return plenum
upstream of the system lter, and downstream of any duct-mounted sensors.
CHOOSE FRESH AIR INTAKE LOCATION:
ASHRAE recommends that the fresh air intake be located at least 10’ from any source of pollutants, such
as auto exhaust, dryer exhaust, exhaust from any fuel-burning appliance, etc. Avoid installation near odor
sources such as garbage bins or barbecue grills. A minimum of 3’ above ground is recommended to avoid
ingress of leaf litter, grass clippings, etc. Do not use a crawl space, basement, or attic as a source of intake
air. Always be sure to comply with local building code requirements regarding fresh air inlets.
CHOOSE HHSC+ CONTROL LOCATION:
The HHSC+ controller provided with your Fresh Air System can be installed anywhere in your home.
Because the HHSC+ does not require routine adjustment it is generally more eective to mount the
controller as close to the HVAC system and damper as possible.
CAUTIONS
• Before installing the HHSC+, turn o all power to your HVAC system.
• Read and follow all instructions carefully.
• Follow all local electrical codes during installation. All wiring must conform to local and national electrical
codes.
• Use caution when mounting components to surfaces that may have concealed wiring beneath the surface.
INSTALLATION
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