New Construction - Fantech PB Series Installation, Operation & Maintenance Manual

4
Installation of Ceiling Grille Housing With or Without Light
Figure 1
Position Locator Tabs
flush with bottom
edge of joist
Figure 2
Housings with 4" duct:
3/16" from bottom edge
Anti-slide locking screw
of joist
on models with 4" duct.
Housings with 6" duct:
15/32"
Figure 3
Grille
Fluorescent lamp
Socket
Figure 5 Electrical
fantech
Figure 4
Ring 2
Shield
Gasket
Screw
Ring 1
1 Plan location of inlet grilles.
Based on the bathroom layout and fixtures, plan the location of the ceiling
grilles for the most effective ventilation.
2. Securing the Housing to the Ceiling Joists.

NEW CONSTRUCTION

Mount housing directly to the ceiling joist using screws and keyhole slots.
Locator tabs on housing should be flush with the bottom edge of the ceiling
joist for correct positioning of the unit once drywall is installed. (Figure 1)
OR
Use the hanger bars to suspend the housing between ceiling joists. For cor-
rect positioning, hanger bars should be positioned 3⁄16" up from the bottom
edge of the ceiling joist on models with 4" duct connection and 15⁄32" up from
bottom edge of joist on models with 6" duct connection. On models with 4"
duct, tighten anti-slide screws to keep hanger bars in place. (Figure 2).
Hanger bars on units with 4" duct connection can be used on
ceiling joists up to 24" on center. Hanger bars on units with 6"
duct connection span ceiling joists up to 16" on center.
If drywall or ceiling material is thicker than 5⁄8" the locator tabs
may be removed to allow the grille collar to be flush with the
finished ceiling material. When ceiling drywall is being installed,
cut hole for ceiling grille.
EXISTING CONSTRUCTION OR WHEN DRYWALL IS IN PLACE.
Cut a 6" round hole for the ceiling grille only and install the housing from the
attic. (Figure 3) Place the housing against the ceiling joist using the locator
tabs to determine the correct position (Figure 1) or align it using the hanger
bars. (Figure 2). Punch out the keyhole knockouts (if using) and the electrical
knockout if needed.
To complete installation for Bath Fan models with lights, continue with steps 3 through 5. For
models without lights, skip 4 and 5.
3. Make Electrical Connections to the Ceiling Grille Housing.
Remove the electrical cover inside the steel housing using a screwdriver.
Connect power by following wiring diagram (Figure 5) and following local or
National Electrical Codes. Replace the electrical cover.
4. Connect the Fan to the Ceiling Grille Housing(s).
Install appropriate diameter duct from the fan to the ceiling grille housing.
(Insulated flexible duct is recommended for all Fantech bathroom exhaust
applications for quieter operation.) For dual grille models, install duct between
fan and wye adapter* (included). Then, attach duct to each leg of the wye
and to each ceiling grille housing. Secure duct in place and seal. If using
insulated flexible duct, seal the inner liner to the duct connector then seal the
outer shell over the top of the inner liner. Do not leave the insulation material
exposed.
5. Installing the Bulb.
Install the bulb by gently inserting it into the socket in the grille housing. Install
the grille by pushing it firmly into the steel collar until it is shouldered by the
ceiling drywall (Figure 3).
ADDITIONAL STEPS REQUIRED WHEN INSTALLING A FLUORESCENT MODEL PBF4
OVER A TUB OR SHOWER. (Figure 4)
1. Place ring 1 on socket legs first.
2. Screw metal shield in place over socket.
3. Add rubber gasket
4. Secure ring 2 to socket. Click indicates a secure installation.
Repeat steps 1 through 5 for each additional ceiling grille housing being installed.
*For most efficient operation wye adapter should be positioned the equivalent of three duct
diameters away from the fan inlet.