Installation Manual

Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Installation
Tools and supplies needed (Not Included):
Y
ou will need the following items: two pieces of 2x stock to match your existing fram-
ing, a saw to cut the hole in the ceiling, a hammer or screw gun to attach the blocking
to the existing joists, a phillips head screw driver to attach the grille, weather strip
material and low expansion spray foam sealant. For the HV1000, a single pole, sin-
gle throw (SPST)wall switch will be needed.
1
. The fan housing will fit either 16" or 24" on center framing. Cut two
pieces of 2x stock (2 x 6 or 2 x 8 etc.) of the same dimension as the
existing joists. Add these pieces of framing to form a box between the
joists. (Figure 1).
TIP: When the HV is to be installed in a hallway or other location with low ceilings, some
homeowners find that building a box out of 2 x 10s or similar material will raise the HV
to a position where the sound level will be reduced but the efficiency of the fans will not
be diminished. This box should not
exceed 12 inches in height.
2. Cut a hole in the ceiling under where the HV will be installed. The hole
should be no larger than 14 1/2" x 22 1/2". This will allow for the grille to
cover the exposed edges. The suggested method for making the proper
sized hole in the ceiling is; cut a pilot hole under where the fan will be
installed. (Figure 2) From above, using a saw, cut along the inside edge
of the framework removing the ceiling panel and any strapping within
the frame. Do not damage electrical wiring or other hidden utilities .
3. Install a foam weather stripping or other flexible material (not supplied)
on the top of the joists and added framing. This gasket will serve to seal
between the housing and the framing as well as dampen vibrations.
Check the joint between the ceiling and the 2x stock. Some types of ceil-
ings are spaced away from the joists. Any gap between the 2x’s and the
ceiling should be sealed prior to final installation. (Figure 3) Use a low
expansion spray foam sealant (not supplied).
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 over-
lapping the joists. (Figure 4) The HV should not be forced into this
opening.
Forcing it into place may cause the doors to bind and not
function properly.
5. If desired, secure the HV to the top of the joists using the #8x3/4
screws provided. When fastening the mounting flange to the joists care
should be taken that all screws are tightened evenly to avoid the door
hinges binding.
DO NOT OVER TIGHTEN.
6. Wire the HV as shown in the Wiring section of this manual. It is
recommended that the wiring of the HV be done by a licensed
electrician.
7. Check the HV for proper operation. Turn the unit on and allow
30 seconds for the doors to fully cycle open and the fans to start.
DO NOT FORCE THE DOORS OPEN.
8. Install the grille (6 screws included) on the ceiling below the fan (Figure 5).
TIP: Some owners find the installation has a more finished look when
the inside of the blocking has been painted before the unit is installed
and the grille is put in place.
HV1000 shown