Field Controls HHSC+ - Installation Guide; Damper and Intake Location; Controller Placement; General Installation Cautions

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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 airow and improve system eciency. 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 eective 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