Bi-directional & self-reversing electric motors run in either direction, CW or CCW 0000008683 00000 n Direction of rotation is determined from drive side of fan (see Note 2 and 3). 0000048597 00000 n Ceiling fan direction in the winter should be clockwise, and the fan should run at the lowest speed. trailer 0000068502 00000 n Rotate the fan housing so the discharge is facing up. On single inlet fans, the drive side is the side opposite the fan inlet. The reversible fans usually have a reverse wire, which can be connected to reverse the direction of the motor. 0000001210 00000 n Ceiling fans in themselves do not heat or cool a room, but the ceiling fan rotation allows improved air circulation, which can greatly improve the comfort of your living space. When looking at the fan so that the circular sticker with the Noctua logo is facing you, the direction of airflow is towards you and the sense of rotation is clockwise: Do you have a question concerning one of our products? This particular centrifugal fan is powered by a 5-volt brushless DC motor. Replace access panel or 21 33 It would be the same on an exhaust fan. Manage Your Cables and Other Obstructions. Make sure the fan not hammer on the housing. x�b``�e``1d`e`�g`@ �+G�m6��$�3��z���%�e�� K+�et4�Tc}(��b��2�� �@ �,3�. On double inlet fans with drives on both sides, the drive side should be on the same side as the higher-powered drive unit. Not all fans are reversible. You will also be able to identify the Exhaust side as you will see power wires entering the fan motor. Similarly, it is asked, which side of fan is exhaust? 0000003750 00000 n Exhaust fans go on the rear or the top. <<3CD233836619754A8A3B81552F64EE72>]>> 0000004527 00000 n xref For DWDI or Arrangement 3 SWSI fans, it is the side of the fan housing at which the belt drive sheave is mounted. 0000001327 00000 n These fans are usually wired to run in one direction. Backward curved fans have wheels whose blades curve outward, while radial-tip fans' blades are curved inward and radial at their tips (hence the name "radial tip"), while still in a backwardly-curved configuration. 0000000956 00000 n On those fans, there will be an indicator on one of the edges noting airflow direction. Click to see full answer. Do not mount exhaust fans on the bottom of the case; since hot air rises, a bottom-firing exhaust fan will be working against physics by expelling slightly cooler air instead of warmer air.The Intake-exhaust direction should go front-to-back and bottom-to-top. 0000000016 00000 n Operating by electricity, the overall procedure involves an electric current that passes through the system to make the motor operate, and, in turn, this causes the fan’s blades to move. Some whole house fans, however, can be reversed to spin in the opposite direction. This cools us off by evaporation. 0000004751 00000 n To do so, carefully disconnect the blade from the pole and unscrew the motor from the frame. 0000055324 00000 n %%EOF 3. 0000022191 00000 n 0000077456 00000 n Generally, it’s best to have as few obstacles as possible between the intake fans on the front of the case and the exhaust fans on the rear and top of the case. 0000001787 00000 n Do • Incorrect direction of rotation. First, if the axial fan nameplate is marked as "three-phase 380V", then the fan connection voltage is 380V three-phase power supply. 2. Fan blades are tilted, and setting to the counterclockwise position pushes air down with the top side of the blade, creating a “wind chill” effect. 0000002393 00000 n 1. This pulls cool air up toward the ceiling, which in turn displaces the warm air that rises and collects near the ceiling. Fan Rotation In Summer: The impact on performance in reverse rotation approximates to:-Air flow reduction -30% Pressure reduction -55% Power reduction -25% TRULY REVERSIBLE Equal volume flow in both directions can be achieved by blade reversal 0000077184 00000 n This is so they can be used to draw air UP for keeping cooler (lower) air circulating, or to push air DOWN for keeping warmer (higher) air circulating. The direction of the rotation is determined from the drive side of the fan. The drive end is is the side of the fan housing through which the fan or motor shaft protrudes. FAQ: How can I find out the direction of airflow and sense of rotation? In summer, you want to be sure to switch your fan so that the blades move in a counter-clockwise rotation (when you are looking up at them from below). In a fixed-direction electric motor such as on an HVAC blower fan or an A/C or heat pump compressor, each time the motor starts its start capacitor and start winding give the motor a "kick" in the right direction. A clockwise ceiling fan direction … Improper rotation will result in loss performance, excessive horsepower and possible motor burnout. In order to check fan whether it is directional or bi directional, check in which direction you get air output from enclosure. Step 4) Check the load in case it indicate direction of rotation because in pump application sometimes arrow indicated on pumps too. 0000007765 00000 n The Rear or Exhaust side (the side that the air comes out of) of our fans will always be the side that houses the fan motor. Step 3) If load is pump, check in which direction you get desired flow rate. So, which rotation is best for which season? The direction of the rotation blows air upwards and downwards respectively. You can also save in energy costs when the ceiling fan is on the correct setting to support your cooling or heating efforts. Helpful photos to identify your blower wheel Check rotation by energizing the unit momentarily. 0000002883 00000 n The exhaust fan sucks the hot air out of the attic and the pushes it out into atmosphere. 0000008188 00000 n Their curvature can also be thought of as radial at the tips but gradually sloping toward the direction of rotation. All it takes is a change in ceiling fan direction, reversing the air flow to suit your needs according to the season. A700, 900-1500 Models Remove the eight screws holding the access panel or collar as shown in picture. This is what, I believe, happened when the OP switched red and yellow wires on his fan. Most ceiling fans are designed to rotate in EITHER direction; clockwise or counter-clockwise. 0000003142 00000 n rotates in same direction as the arrows on the motor The outer ring of the bearing is spherical and or belt drive assembly. 0000031729 00000 n 0000038896 00000 n The result was that the capacitor was in series with both windings => there was no … startxref A typical backward-curved centrifugal fan, in which the blades curve away from the direction in which they rotate Centrifugal cooling fan mounted to heatsink which dissipates heat from processor of a consumer-grade laptop. As SP is increased, HP and CFM decrease. Direction of rotation is not critical. Please use. 0000004009 00000 n The back side of a fan is the suction side and the front is the push side. Fan Discharge Rotation If a fan rotated counterclockwise the blade would not push the air out into the room or suck it in. Phone: 215-467-4646 Fax: 215-467-1667 2701 East Tioga Street Philadelphia, PA 19134 humidair@comcast.net. 4. Read on to know. Using caution, remove the motor on one side of the frame and the backing on the other. Fan rotation is determined by looking at the fan from the drive end. JavaScript seems to be disabled in your browser. But an initial rotation makes torque in one direction greater than the other and starts up the fan. 0000053101 00000 n 0000004638 00000 n The Intake-exhaust direction should go front-to-back and bottom-to-top. For the best experience on our site, be sure to turn on Javascript in your browser. Direction of rotation is very critical. 0000059872 00000 n It cranked up ok, but there still wasn't something right about the fan-- still seemed slower than normal. Likewise, if the blade is angled down and the fan turns the opposite direction, the reverse is true.