Operation - Broan ZB80ML1 Installation Manual

Page 12
WARNING
Before servicing or cleaning unit,
switch power off at service panel and lock the service
disconnecting means to prevent power from being
switched on accidentally. When the service disconnecting
means cannot be locked, securely fasten a prominent
warning device, such as a tag, to the service panel.

Operation

It is normal for this ventilation fan to take approximately 5 seconds
to start running after it is turned on.
Modes
(For reference, wiring diagrams are on pages 5 and 10.)
Continuous ventilation:
1. Turn master wall switch on.
2. Fan operates at user-adjustable airflow rate.
Motion sensing:
1. If master wall switch is not already on, turn it on.
2. Turn sensor/control wall switch on. Some installations may not
have a separate sensor/control wall switch; where it is com-
bined with master wall switch.
3. Fan operates at certified airflow rate and sensor detects motion.
4. When no more motion is detected, fan enters time delay mode.
(See below.)
Manual-on (optional manual-on wall switch must be installed):
1. Turn master and manual-on wall switches on (sensor/control wall
switch can be on or off).
2. Fan operates at certified airflow rate.
3. When manual-on wall switch is turned off, fan enters timed-off
mode. (See below.)
Time Delay:
Fan operates at certified airflow rate until user-adjustable TIME
delay has passed, then fan reverts to user-adjustable airflow rate.
To Set the User-Adjustable Airflow Rate*
Using a small, flat-blade screwdriver, carefully rotate the CFM
adjustment until the arrow points to the desired airflow rate.
To Set the User-Adjustable Time Delay*
Using a small, flat-blade screwdriver, carefully rotate TIME
adjustment until the arrow points to the desired minutes of time
delay.
ZB80ML1 n ZB110ML1 Installation Guide
To Set the User-Adjustable Motion Light Timed-Off**
1. This adjustment should only be made if, during installation, light
was wired to motion sensor along with the fan.
2. Using a small, flat-blade screwdrive, carefully rotate the TIME**
adjustment until the arrow points to the desired minutes light
should remain on after no more motion is detected.
3. Adjust fan Time Delay* for desire time (minutes) fan operates at
certified airflow rate after Timed-off** turns off the light. The total
certified airflow rate fan on-time is the combination of the Time
Delay* and Timed-Off** time settings.
* The user-adjustable controls are located in one corner of the
Fan Housing, behind the Grille.
** Motion Light Timed-Off adjustment is located in a different
corner of Fan Housing, behind the Grille, than the Airflow Rate*
and Time Delay* adjustments.
ZB80ML1 User-adjustable controls
ZB110ML1 User-adjustable controls
Light Timed-Off control
To Turn Fan OFF
Turn the master switch OFF.