NEKTRA PRO 3291021 Guide D'installation page 10

Housing
3. Refer to wiring diagram on page 3. Remove the junction box cover.
Using wire nuts, connect house wires to ventilating fan wires: black
to black; white to white; green to green. Replace the junction box
cover (Fig. 3).
CAUTION
If your existing wires do not match these colors, you must determine
what each wire represents before connecting and you may need
to consult an electrician contractor to determine this safely.
Mount junction box cover carefully so lead wires are not pinched.
Duct
Black, white and green
Fig. 3
 Installation II (in existing construction)
Installing the fan housing in an existing building requires an accessible
area (attic or crawl or space) above the planned installation location
and existing duct and wiring.
A) To install the fan housing, follow the procedures described
in Installation I.
1. Take the following precautions before installation:
 Check the area above installation location to be sure that:
– Duct work can be run and the area is sufficient for proper ventilation;
– Wiring can be run to the planned location;
– No wiring or other obstructions can interfere with installation.
 Inspect duct work and wiring before proceeding with installation.
Joist
Fig. 2-2
Wiring box
Black, white and green
2 long
wood screws
4. Install a circular duct and secure it with duct tape or clamps.
5. Finish ceiling work. Ceiling hole should be flush with the edge of the
flange. Do not flush mount to joist. Flange should be flush with ceiling
board. See dimension for ceiling hole on page 3 (Fig. 4). If a joist is
present, insert long wood screws through flange and through ceiling
to secure fan to joist.
6. Pinch mounting springs and insert into narrow rectangular slots inside
the fan housing next to the fan motor (Fig. 5).
7. Turn the power back on at the electrical panel once installation is
completed.
2 long
wood screws
Ceiling
Fig. 4
 Plan suitable location for fan housing (next to ceiling joist). Do not flush
mount flange to ceiling joist.
 Before installation, provide inspection and future maintenance access
at a location that will not interfere with installation work.
2. Remove ceiling section using dimensions provided on page 3.
Be careful to cut the hole exactly. If the hole is too big, the fan
screen will not hide it.
3. Install fan housing.
4. Continue with steps 3-7 of Installation I on page 5 to complete
installation work.
Fig. 2-3
Flange
Ceiling
Flange
Mounting
spring
Fig. 5
Ceiling
Grille
5