MODELS QTXE110S • QTXE110S2 To register this product visit: Page 1 HUMIDITY SENSING FAN www.broan.com READ AND SAVE THESE INSTRUCTIONS WARNING OPERATION TO REDUCE THE RISK OF FIRE, ELEC- The humidity control and fan can be op- TIMER ADJUSTMENT TRIC SHOCK, OR INJURY TO PERSONS, erated separately. Use a 1 or 2-function This humidity-sensing fan has a timer. It is OBSERVE THE FOLLOWING: wall control. Do not use a dimmer switch user-adjustable from 5 to 60 minutes and is 1. Use this unit only in the manner intended to operate the humidity control or light. factory-set at 20 minutes. The timer controls by the manufacturer. If you have questions, See “Connect Wiring” for details. how long the fan remains on (a) after rise contact the manufacturer at the address or SENSOR OPERATION in humidity and (b) humidity level are both below the user-adjustable “HUMIDITY” telephone number listed in the warranty. This humidity-sensing fan responds to: (a) 2. Before servicing or cleaning unit, switch setting or after being energized by cycling rapid to moderate humidity increases and power switch. power off at service panel and lock the ser- (b) humidity above a 50%-80% relative vice disconnecting means to prevent power humidity (RH) set-point. (a) and (b) are To adjust the timer: from being switched on accidentally. When set with “HUMIDITY” adjustment. Fan may 1. Disconnect power at electrical service the service disconnecting means cannot be occasionally turn on when environmental panel. locked, securely fasten a prominent warning conditions change. If the fan continuously 2. Through the grille, locate the “MINUTES” device, such as a tag, to the service panel. responds to changing environmental con- screwdriver slot. 3. Installation work and electrical wiring must be ditions, “HUMIDITY” adjustment may be 3. Using a small, flat-blade screwdriver, done by a qualified person(s) in accordance required (see section below). carefully rotate “MINUTES” adjustment with all applicable codes and standards, to desired setting (5 to 60 minutes). including fire-rated construction codes and STATUS INDICATOR 4. Check operation by cycling power switch standards. This indicator can only be seen by looking as instructed under “MANUAL ON WITH directly at it. Normal mode is 5-seconds on 4. Sufficient air is needed for proper combus- TIMED OFF” or by turning on a humidity and off. If it blinks rapidly for 5-seconds and tion and exhausting of gases through the source until fan turns on. flue (chimney) of fuel burning equipment to then off, check sensor connections on grille prevent backdrafting. Follow the heating equip- and fan housing. 5. Check timer setting with watch or clock ment manufacturer’s guideline and safety after turning humidity source off if it was MANUAL ON WITH TIMED OFF standards such as those published by the turned on it Step 4. National Fire Protection Association (NFPA), For odor or vapor control, the fan can be 6. Repeat above steps if necessary. and the American Society for Heating, Re- energized by cycling its wall-mounted switch frigeration and Air Conditioning Engineers if one is installed. Once the fan has been (ASHRAE), and the local code authorities. turned on in this manner, it will remain on 5. When cutting or drilling into wall or ceiling, do for the set “MINUTES” period. not damage electrical wiring and other hidden To manually energize the fan: CLEANING & utilities. 1. Go to Step 2 if switch is already on; 6. Ducted fans must always be vented to the otherwise, turn switch on for more than MAINTENANCE outdoors. 1 second. 2. Switch off for less than 1 second. 7. Acceptable for use over a tub or shower when For quiet and efficient operation, long life, connected to a GFCI (Ground Fault Circuit 3. Switch back on and fan will turn on. and attractive appearance - lower or remove Interrupter) - protected branch circuit. HUMIDITY ADJUSTMENT grille and vacuum interior of unit with the 8. This unit must be grounded. “HUMIDITY” has been factory set for most dusting brush attachment. shower applications. If the fan is in a tub The motor is permanently lubricated and area or is used for dampness control, the never needs oiling. If the motor bearings CAUTION “HUMIDITY” may need to be decreased are making excessive or unusual noises, toward 50% RH. If the control is responding replace the motor/blower wheel assembly. 1. For general ventilating use only. Do not use too often to changing environmental condi- SENSOR CLEANING to exhaust hazardous or explosive materials tions, adjustment toward 80% RH may be and vapors. The humidity sensor is mounted in the grille. required. To adjust the “HUMIDITY”: The sensor will operate most reliably when 2. This product is designed for installation in flat 1. Turn power off at electrical service cleaned occasionally as follows: ceilings only. DO NOT MOUNT THIS PROD- panel. 1. Disconnect power at service entrance. UCT IN A WALL. 2. Through the grille, locate the “HUMIDITY” 3. To avoid motor bearing damage and noisy 2. Remove the grille. Use a dry dustcloth, screwdriver slot. clean toothbrush, or lightly vacuum to and/or unbalanced impellers, keep drywall 3. Using a small, flat-blade screwdriver, spray, construction dust, etc. off power unit. clean sensor and grille. DO NOT USE carefully rotate “HUMIDITY” adjustment ABRASIVE CLOTH, STEEL WOOL 4. Please read specification label on product for toward 50 or 80. PADS, OR SCOURING POWDERS. further information and requirements. 4. Turn power on and check operation by 3. DO NOT USE cleaning sprays, solvents, turning on shower or other humidity or water on or near the sensor! Installer: Leave this manual source until fan turns on. with the homeowner. 5. Repeat above steps if necessary. MODELS QTXE110S • QTXE110S2 Page 2 • Locate unit above (GFCI protected circuit required) or TYPICAL INSTALLATIONS within 5 feet of shower head. • Locate unit away from heating or cooling sources which can affect humidity levels. • Do not locate near window. Unit may respond to the outdoor humidity level. • Unit must be installed in ceiling to properly sense moisture. • Locate unit only on flat ceilings up to 12 feet high for proper sensing. • The ducting from this fan to the outside of the building has a strong effect on the air flow, noise and energy use of the fan. Use the shortest, straightest duct rout- Housing mounted to Housing mounted anywhere be- ing possible for best performance, and avoid installing I-joists. tween I-joists using hanger bars. the fan with smaller ducts than recommended. Insula- tion around the ducts can reduce energy loss and inhibit mold growth. Fans installed with existing ducts may not achieve their rated airflow. 2. Plan the wiring. • Plan to supply the unit with proper line voltage and appropriate power cable. Power cable should be routed to the switch box first and then to the unit (See “CONNECT WIRING” on page 3). • Do not operate this unit with a speed control. Damage to the sensor unit will result. Housing mounted to joists. Housing mounted anywhere be- tween joists using hanger bars. INSTALL HOUSING & DUCT 1a. Mount housing to joist or I-joist. Use a pliers to Housing mounted anywhere Housing mounted anywhere be- bend housing TABS between trusses using hanger tween trusses using hanger bars. TABS out to 900. Hold hous- bars. ing in place so that the hous- ing tabs con- PLAN THE INSTALLATION tact the bottom SPACER of the joist. (use for mounting to I-Joist) 1. Choose the The housing INSULATION* ROOF CAP* mounts with installation (Place around and (with built-in location. over Fan Housing.) damper) four (4) screws FAN or nails. Screw HOUSING or nail housing POWER Keep duct The location of CABLE* runs short. to joist through your humidity lowest holes in sensing fan is each mount- Seal gaps ing flange, very important. around Housing. I-JOIST Use the follow- OR then through 6-IN. ROUND highest holes. ing guidelines DUCT* Seal duct NOTE: Mounting to I-JOIST (shown) requires use of for best opera- joints with 6-IN. WALL CAP* *Purchase (with built-in SPACERS (included) between the highest hole of each tion: separately. tape. ROUND ELBOWS* damper) mounting flange and the I-joist. OR MODELS QTXE110S • QTXE110S2 Page 3 1b. Mount housing anywhere between 2. Attach damper/ trusses, joists, or I-joists using hanger duct connector. bars. Snap damper / duct con- nector onto housing. Make Sliding hanger bars are provided to allow for accurate posi- sure connector is flush tioning of housing anywhere between framing. They can be with top of housing and used on all types of framing (I-joist, standard joist, and truss damper flap falls closed. construction) and span up to 24”. TAB SCREWS (4) 3. Install 6-inch round duc- twork. Connect 6-inch round ductwork to damper / duct connector. Run ductwork to a roof cap or wall cap. Tape all ductwork con- nections to make them secure and air tight. MOUNTING HANGER CHANNEL (2) BAR (4) Attach the MOUNTING CHANNELS to the housing using CONNECT WIRING the SCREWS supplied. Make sure TABS face “up” as shown. Use the set of channel mounting holes (marked “STD”) to WIRING OPTION #1 - Allows fan to operate in automatic mode or manual mount the housing flush with the bottom of the drywall. Use mode (for odor control) by cycling ON/OFF switch. the other set of holes (not marked) to mount the housing ON / OFF SWITCH flush with the top of the drywall. (PURCHASE SEPARATELY) ORG BLK WHT FAN ON / OFF SWITCH BLK HOLE FOR OPTIONAL SCREW (2) BRN HUMIDITY WHT * CONTROL SCREW MOUNTING (4) BLK 120 VAC WHT WHT WHT LINE IN GRD GRD SWITCH BOX UNIT WIRING OPTION #2 - Fan can be turned ON, OFF, or set to operate automati- cally.