Instructions / Assembly

ZN80M
n
ZN110M Installation Guide
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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 97019394 ControlAssembly&Motor(ZN80M)
  97018753 ControlAssembly&Motor(ZN110M)
7 97018331 Duct Connector
 8 99111513 6”to4”Reducer(ZN80Monly)
9 99020301 Blower Wheel
 10 97018768 ScrollAssembly(ZN110M)
  97019371 ScrollAssembly(ZN80M)
11 97018779 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.