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ventCool™ Ventilation Cooling, Return, and Relief Dampers: All three dampers are identical in size and each may be
ventCool™ Ventilation Cooling, Return, and Relief Dampers:
used interchangeably as shown on the system diagram. The dampers may be installed vertically, horizontally, or at
an angle. Install with the damper shaft as close as possible to a horizontal (level) position as shown in FIG 4.:
IVRC Damper Control Module: The IVRC may be installed in an attic or mechanical room area, away from heat
IVRC Damper Control Module:
sources such as vent connectors, chimneys and heating appliances (see Specifi cations for max service temperature),
and in a dry and protected indoor location. Install the IVRC such that the relay status indicator lamps are visible, and
all wiring connections are accessible. Ensure that the wiring connections to the Smart Thermostat and HVAC system
do not exceed maximum wiring lengths and gauge limitations as given in their respective installation instructions.
Smart Thermostat Ventstar T 7850: Install the thermostat in the living space, in a location as recommended in the
Smart Thermostat Ventstar T 7850: I
thermostat installation instructions included with the thermostat. Refer to those installation instructions for maximum
wiring lengths and gauge limitations. The complete installation manual is available online for free download at
www.Venstar.com.
Outdoor Temperature Sensor Venstar ACC-TSEN: Install the outdoor temp sensor according to the instructions
Outdoor Temperature Sensor Venstar ACC-TSEN:
included with the sensor. Ensure that the sensor is not subjected to direct sunlight or other heat sources such as
appliance and dryer vents, etc.
HHSC+ Fresh Air Ventilation Control (optional): Refer to the installation instructions included with the HHSC+.
HHSC+ Fresh Air Ventilation Control (optional):
Attic installation in hot climates is not recommended; see the Specifi cations section in the HHSC+ installation
instructions for maximum service temperature and other limitations.
T-Sensor Damper Control (optional): Refer to the installation instructions included with the T-Sensor. Install the
T-Sensor Damper Control (optional):
T-Sensor on the dedicated fresh air duct upstream of the FAD damper.
ELECTRICAL CONNECTIONS:
(Please refer to the appropriate wiring diagrams as shown below)
CAUTION: All connections to the ventCool™
CAUTION: All connections to the
WARNING: All wiring is to be installed and inspected in compliance with all local code requirements of
WARNING: All wiring is to be installed and inspected in compliance with all local code require
WARNING: Ensure that all wiring connections to the ventCool™
WARNING: Ensure that all wiring connections to the
WARNING: Disconnect branch circuit for 24VAC transformer and all power sources to the HVAC
WARNING: Disconnect branch circuit for 24VAC transformer and all power sources to the HVAC
ventCool™ system and its components (except 120V/24V system
transformer) are to be nominal 24VAC. Ensure all wiring is properly supported and
transformer) are to be nominal 24VAC. Ensure all wiring is properly supported and
installed; use strain reliefs where present and required by code.
installed; use strain reliefs where present and required by code.
the jurisdiction having authority.
the jurisdiction having authority.
Connection to the ventCool™ system with diff erent line voltages (power) will cause severe
Connection to the ventCool™ system with diff erent line voltages (power) will cause severe
component damage, electrical shock hazards, and potential fi re hazard!
component damage, electrical shock hazards, and potential fi re hazard!
system before beginning installation!
system before beginning installation!
system and its components (except 120V/24V system
ventCool™ System do not exceed nominal 24VAC.
System do not exceed nominal 24VAC.
page 5
FIG 4
ments of
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