Operation; Cleaning And Maintenance; Troubleshooting - Broan-NuTone X2 ZN80M Guia De Instalacion

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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

Modes
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 combined with master wall switch.
3. Fan operates at certified airflow rate and sensor de-
tects motion.
4. When no more motion is detected, fan enters timed-off
mode.
Timed-off:
1. Fan operates at certified airflow rate.
2. When user-adjustable time delay has passed, fan
reverts to user-adjustable airflow rate.
3. Evacuation of humidity, odors, etc. is complete.
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 the
TIME adjustment until the arrow points to the desired time
delay, shown in minutes.
* The user-adjustable controls are located in one corner of
the Fan Housing, behind the Grille.
ZN80M User-adjustable controls
ZN110M User-adjustable controls
To Turn Fan OFF
Turn the master switch OFF.

Cleaning and Maintenance

To Clean
For quiet and efficient operation, long life and attractive
appearance, remove Grille and vacuum interior of unit
with a dusting brush attachment.
Do not use cleaning sprays, solvents or water on, or near,
the sensor.
Motor is permanently lubricated and never needs oiling.
If motor is making excessive or unusual noises, replace
Control Assembly and Motor.

Troubleshooting

Symptom: Fan does not run.
• Check for an open fuse or circuit breaker in building's
service panel.
• Check two (2) plug-in connections for Motor and its
Control are seated firmly in place.
• Check two (2) plug-in connections for Sensor and its
Control are seated firmly in place.
• Check that Blower Wheel spins freely.
Symptom: Motion mode does not operate fan at certi-
fied air flow rate.
• Check two (2) plug-in connections for Sensor and its
Control are seated firmly in place.
Symptom: Fan runs erratically.
• Check that Blower Wheel is firmly attached to Motor
shaft and both spin freely.
Symptom: Fan seems noisy.
• Check that back draft damper in fan's Duct Connector
pivots freely. Screws used to attach duct to Duct Con-
nector may prevent damper from opening.
• Check that back draft damper in wall or roof cap pivots
freely. Dampers are sometimes mistakenly painted shut
or obstructed by bird or insect debris.
Symptom: Fan does not properly ventilate room.
• For spot ventilation, turn both master switch and sen-
sor/control wall switch ON, so sensor/control operates
fan at certified airflow rate.
• For spot ventilation followed by continuous ventilation,
increase the "TIME" setting of user-adjustable time
delay.
• For continuous ventilation, increase "CFM" setting of
user-adjustable airflow rate.
ZN80M ZN110M Installation Guide
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