Installation Guide
4
 PREPARATION
Tools Required for Assembly (not included): Hammer, 
Flathead  Screwdriver, Wire  Nuts,  Nails, Duct Tape, 
Phillips Head Screwdriver, Utility Knife.
Helpful Tools (not included): Electric Drill, Drill Bits.
WARNING: Turn off electricity at breaker box 
before beginning installation.
Carefully remove unit from carton.
Check area above installation location to be sure that 
wiring can run to the planned location and that duct 
proper ventilation.
Inspect duct work and wiring before proceeding with 
installation.
Before  installation,  provide  inspection  and future 
maintenance  access  at  a  location  that  will  not 
interfere with installation work.
You may need the help of a second person to install 
this fan: one person on the attic side and one on the 
room side.
Note: Installations may vary  depending on  how  the 
previous bath  fan was installed.  Supplies  necessary 
for the installation of your bath fan are not all included. 
However,  most  are  available  at  your  local  home 
improvement or hardware store.
Proper insulation around the fan to minimize building 
heat loss and gain. The ducting from this fan to the 
outside of the building has a strong effect on the air 
flow, noise and energy use of the fan. Use the 
shortest, straightest duct routing possible for best 
performance, and avoid installing the fan with smaller 
ducts than recommended. Insulation around the 
ducts can reduce energy loss and inhibit mold growth. 
Fans installed with existing ducts may not achieve
 their rated air flow.  
Locate unit above (GFCI-protected circuit  required) 
or within 5 feet of the shower head.
Locate  unit  away  from  heating  or  cooling sources 
which can affect humidity levels.
Do not locate near window. Unit may respond to the 
outdoor humidity level.
Unit must  be  installed in  ceiling  to  properly  sense 
moisture.
proper sensing.
Use a roof cap or wall cap  that has a built-in damper 
to reduce backdrafts.
BLACK
ON/OFF SWITCH
(purchase separately)
SWITCH BOX
WHITE
GROUND
(bare)
BLUE
JUNCTION BOX
SWITCH BOX
OFF
L
BLUE
External timer switch can be used, please contact
Roof cap
(with built-in
damper)
Seal gap
around 
housing
Caulk termination
to duct
Fan housing
Short piece of flexible
duct helps alignment
and absorbs
sound
or
Wall cap
(with built-in
damper)
Wall cap
(with built-in
damper)
Delta Breez customer service and consult with a 
licensed electrician for compability.










