AHU Fan Speed - http://www.hvacmechanic.com/ Forums
Original message
| n4gmu
 |  "AHU Fan Speed"
, posted Sat 17 May 08:49:  
RUUD Model UBHA 14J06NFDAI
How do I determin
1.What speed the AHU fan is running
2.Seems SLOW and would running it faster push the air
throughout the room better? I think the flow could be better.
3.The wiring diagram shows 3 speeds available.
4.Black wire from motor is NOT connected.
Thanks in advance
Dave / N4GMU
[this message was edited by n4gmu on Sat 17 May 12:07] |
| Replies:
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| theduke03
| "Re(1):AHU Fan Speed" , posted Sat 17 May 14:07:
Black is high speed. If you want high speeed just switch the black for whatever is being used now(probably blue/medium high). This may cause a decrease in comfort, and shorter run cycles which can also cause a decrease in comfort and higher humidity. May I ask why you feel the need to increase the airflow?
Good airflow should be subtle and not noticeable without putting your hand over vent.
"My dad was the most feared furnace fighter in Northern Indiana."
[this message was edited by theduke03 on Sat 17 May 14:11] |
| | n4gmu
|  "ZZ"
, posted Sat 17 May 15:05:
Dave / N4GMU
[this message was edited by n4gmu on Sat 17 May 20:13] |
| | n4gmu
| "Re(2):AHU Fan Speed" , posted Sat 17 May 15:03:
Thanks
Dave / N4GMU
[this message was edited by n4gmu on Sat 17 May 15:30] |
| | Houston204
| "Re(3):AHU Fan Speed" , posted Sun 18 May 09:30
Low airflow can also be caused by a dirty ait filter, a dirty evaporator coil, ice, or a weak run capacitor.
"Tip of the Day" Remember to remove power first.
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