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ZB80M
n
ZB110M Installation Guide
Page 13
11
1
3
9
10
12
2
6
5
4
8
7
Service Parts
Order replacement
parts by Part No.,
not by Key No.
Key No. Part No. Description
1 97018349 Mounting Frame
2 97018721 Knockout Plate & Screws
3 97018382 Housing
4 97018472 Wiring Panel/Harness Assembly
5 97018846 Motion Control Assembly
6 1102582 Control Assembly & Motor (ZB80M)
1102583 Control Assembly & Motor (ZB110M)
7 97018331 Duct Connector
8 99111513 6” to 4” Reducer (ZB80M only)
9 99020301 Blower Wheel
10 97019371 Scroll Assembly (ZB80M)
97018768 Scroll Assembly (ZB110M)
11 97018775 Grille Assembly (includes 12)
12 99140208 Grille Spring (2 req’d)
Troubleshooting
Before continuing, turn off power as previously noted
in WARNING and CAUTION sections at the top of the
previous page.
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 sensor/
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 de-
lay.
• For continuous ventilation, increase “CFM” setting of
user-adjustable airflow rate.
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