MODEL QTRE100S
HUMIDITY SENSING FAN
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READ AND SAVE THESE INSTRUCTIONS
WARNING 
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR IN- JURY TO PERSONS, OBSERVE THE FOLLOWING:
1.Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty.
2.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 promi- nent warning device, such as a tag, to the service panel.
3.Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and stan- dards, including
4.Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equip- ment to prevent backdrafting. Follow the heating equipment manufacturer’s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authori- ties.
5.When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
6.Ducted fans must always be vented to the outdoors.
7.Acceptable for use over a tub or shower when connected to a GFCI (Ground Fault Circuit Interrupter) - protected branch circuit.
8.This unit must be grounded.
CAUTION 
1.For general ventilating use only. Do not use to exhaust hazard- ous or explosive materials and vapors.
2.This product is designed for installation in flat ceilings only. DO NOT MOUNT THIS PRODUCT IN A WALL.
3.To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off power unit.
4.Please read specification label on product for further information and requirements.
OPERATION
The humidity control and fan can be operated separately. Use a 1- or
SENSOR OPERATION
The
MANUAL ON WITH TIMED OFF
The humidity sensing fan has an additional operation feature. For odor or vapor control, the fan can be energized by cycling the power switch. Once the fan has been energized in this manner, it will remain on for 20 minutes.
To manually energize the fan:
1.If fan power switch is already ON, proceed to Step 2; otherwise, turn power switch ON for more than 1 second.
2.Turn fan power switch OFF for less than 1 second.
3.Turn fan power switch back ON and fan will turn ON.
CLEANING & MAINTENANCE
For quiet and efficient operation, long life, and attractive appear- ance - lower or remove grille and vacuum interior of unit with the dusting brush attachment.
The motor is permanently lubricated and never needs oiling. If the motor bearings are making excessive or unusual noises, replace the motor / blower wheel assembly.
SENSOR CLEANING
The humidity sensor is mounted in the control housing. The sensor will operate most reliably when cleaned occasionally as follows:
1.Disconnect power at service entrance.
2.Remove the grille. Use a dry dustcloth, clean toothbrush, or lightly vacuum to clean sensor and grille. DO NOT USE ABRASIVE CLOTH, STEEL WOOL PADS, OR SCOURING POWDERS.
3.DO NOT USE cleaning sprays, solvents, or water on or near the sensor!
Installer: Leave this manual with the homeowner.
