HV Series Installation

Tools & Supplies Needed:

You will need 2 pieces of 2x stock to match your existing framing, a saw to cut the hole in the ceiling, a hammer or screw gun to attach the blocking to the existing joists and both a flat head and Phillips head screw driver to attach the grille and for the electrical work.  Some homeowners find the installation has a more finished look when the inside of the blocking has painted before the unit is installed and the grille is put in place.

 Choosing Your Location:

Air will always take the path of least resistance.  The HV should be located so that it is as central as possible to the area you want to cool.  Above a central hallway or at the top of a stairwell will provide the best air flow.  The fan can also be mounted vertically, exhausting through a knee wall into an under-the eaves attic space.  Cooler outside air should be able to move through your windows, the space that needs to be cooled, and exhaust out through the fan into the attic.  The fan will work with blown in insulation, but should never be used over cooking appliances.

Before Installing Your HV: Read All Instructions Carefully

  • Some state and local electrical codes require fan products be installed by a licensed electrician.  Check with your local code officials before installation.

  • Make sure that you have adequate net free exhaust area out of your attic.  A minimum of 1.5 square feet is required for the HV1000 and 2.13 square feet is required for the HV1600.  This can be accomplished with a combination of roof, ridge, soffit or gable end vents or other attic exhaust points.

  • Make sure that there is enough clearance for the doors to open.  Minimum requirement for the HV with R22 insulating doors (HV1000 and HV1600-GR) is 11" and 12" for models with R38 insulating doors (HV1000-DB and HV1600-GDR).

  • Make sure their aren't any pipes, wires, rafters, or air conditioning or heating ducts running through the space where the HV will be installed and that the doors will face an unoccupied area.

Installation:
1. Cut a hole in the ceiling under where the HV will be installed.  The dimensions of the hole should be no greater than 23 1/2" x 14".  This will allow for the grille to cover the exposed sheetrock edges.  Suggested methods for making the proper sized hole in the ceiling are: Cut a pilot hole under where the fan will be installed.  Cut toward the edge to find the joist pattern and lay out the fan opening on the ceiling (Figure 1) ; or mark the four corners of the opening from the attic side and draw a line between each of the four corners to lay out the fan opening; or use a stud finder to locate the joists, cut a template from the fan packaging material and use the template to lay out the fan opening.
2. The fan housing will fit either 16" or 24" on center framing.  Cut 2 pieces of 2x stock (2 x 6, 2 x 8, etc) of the same dimensions as the existing joists.  Add these pieces of framing to form a box between the joists. 
3. Install the foam gasket (supplied) on the top of the joists and added framing.  Check the joint between the ceiling and the 2x stock.  Some types of ceiling are spaced away from the joists.  Any gap between the 2x's and the ceiling should be sealed prior to final installation.  Use a low expansion spray foam sealant, or silicone to seal the area.
4. Set the HV on the gasket with the doors facing to open into the attic.  The lower housing will fit into the box with the mounting flanges overlapping the joists.  The HV should NOT be forced into this opening.  Forcing it into place may cause the doors to bind and not function properly.
5. Install the grille (6 screws included) on the ceiling below the fan.
 

Wiring:

Important:  Because of the motorized doors, wiring the HV is different than a normal ON/OFF fan.  Please follow the instructions carefully.  Be sure to turn off power before wiring the HV whole house fan.  It is recommended that the wiring of the HV be done by a licensed electrician.

(The HV requires a constant source of power.  Because the doors are motorized, thye need power to open and power to close.  The fan operation is controlled internally.)

HV1000
There are three wires in the electrical box:
WHITE, RED and BLACK
1. Connect the WHITE wire to Line Neutral
2. Connect the RED wire to Line Hot
3. Connect the BLACK wire to a Switched Hot Feed
     When 115 VAC Hot is applied to it, the doors will
     open.  When 115 VAC Hot is removed, the doors will close.
4.  Connect the ground wire to the screw in the electrical box.


HV1600
The HV1600 is connected to power through the line cord and must be plugged into a constant, grounded power source.  When connected to power, it will be fully functional with the hand held remote control unit.  When any of the buttons on the remote control are pushed the red indicator light should momentarily flash.
Hardwiring the unit to wall switches using the BLUE and YELLOW wires will provide additional, manual control.  The BLUE wire will provide on/off control and the YELLOW wire will provide high or low speed control.  Using a switch in the ON position will override the remote control function.

Use only SPST (single pole, single throw) switches

The HV whole house fans are NOT for use with solid state speed controls.

Care:

The HV requires no maintenance.  All the motors in the HV are permanently sealed and do not require oiling.  To keep dirt, dust and debris from the fans we recommend that you periodically remove the grille from within the living space and dust the fan blades.  Please remember to make sure that the fan is OFF before dusting the fans blades.

 

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