Adjusting Fan Sped on Variable Speed Fan in Trane Xr80 Furnace

Bird Ricite00 janeiro 03, 2022

  1. Trane XV80 Rooter Speed

    Could you please assist me in understanding how the XV80 is supposed to work in the heat mode. I bear a 2.5 ton x19i condenser, XV80 model TUD080R9V3K (gas), and the TN803 thermostat. In the cooling mode, the Comfort R is brilliant, operates at a very low speed most of the prison term --- a truly variable speed fan, no noise whatsoever.

    In the fire u mode (dip switches set for low airflow setting), the fan hurry appears to turn just in two speeds: low (Stage 1 heat) and high (Microscope stage 2 heat). The speed in Stage 1 heat appears to be A high arsenic that of the cooling cycle in Stage 2. The speed in Stage 2 of Heat is really plaguy noise-wise.

    Should I presume that the heat cycle has no fan speed variabilty built into IT to keep the air flowing relatively fast so that the heat money changer does not get fried. Or is on that point anything messed up with the furnance fan rush issues?

    Any suggestions for mitigating the randomness issue?

    Thanks - JR

  2. You are right, in heating there is zero "Console-R" going.. The heat must be distant from the heat exchanger.

    Now if the strain noise is really badly, you may have broke duct blueprint.

  4. the heat rooter swiftness is adjustable
  5. you need a serve tech to set it to check temporary rise

  6. XV80 Fan Speed

    Quote Originally Posted by kellyr24 View Post

    Is the noise from the supply registers or the return?

    IT appears to be mainly on the comeback (along some connected the render broadside along registers close to the blower)

    --JR

  7. Trane XV80 Fan Speed

    Quote Originally Posted aside catmanacman View Post

    you need a service tech to adjust it to check temp ascension

    There appear to live four speed settings High, Medium, Medium-Low, and Low selectable via DIP switch settings. Is there some other way that the tech could adjust the fan belt along scene?

    Thanks -JR

  8. dip 1 2 alternating current size dip 3 4 flow of air 350 400 450 per ton dip 5 6 comfort r on off dip 7 8 heat flow of air

  9. Trane XV80 Fan Speed

    Quote Originally Posted by catmanacman View Post

    dim 1 2 ac size dip 3 4 airflow 350 400 450 per ton dip 5 6 solace r on off dunk 7 8 heat airflow

    Yep, patterned that out. Angle of dip 7 on and dip 8 on gives Mellow air flow (jet engine like), I have IT on Sir David Low ie. dip 7 off and dip 8 off (that should get me low vent flow, correct?) but still compared with NORMAL air flow happening cooling, it appears quite high. But I suspect, that's a design feature?

    Thanks again -JR

  10. I take over the same furnace. On low fire, the flow of air is about wish cooling is for my 2 short ton. But on high fire, and the furnace is oversized for the sign of the zodiac, it does sound like a jet engine. I have those switches set to contrabass as advisable. Esprit de corps of story, don't oversize - but when I put mine in, that was the smallest model. At present they deliver a 60K adaptation. Fortunately, I could do without high fire and usually have information technology turned off with a switch.

  11. Quote Originally Posted by BaldLoonie View Post

    I have the same furnace. On low fuel, the flow of air is approximately like cooling system is for my 2 gross ton. Merely on high fire, and the furnace is outsize for the house, it does sound like a jet engine. I own those switches set to low equally well. Morale of story, don't oversize - but when I put mine in, that was the smallest exemplary. Now they have a 60K version. As luck would have it, I could do without postgraduate fire and usually have it turned hit with a switch.

    Thanks. Quick questions:
    - is the flow of air on reduced fire the same as air flow on LOW Stage 1 or High (Stage 2 cooling). Mine on low in cooling is simply supersonic. Very, same quiet. Per documentation, I assume the fan is practical at 30% speed of LOW unagitated setting.

    - are are sw 7 and SW 8 set to both on?

    Thank you JR

  12. Quote Originally Posted past jrhvac711 View Post

    Yep, figured that out. Duck 7 happening and dip 8 along gives HIGH airflow (jet engine like), I have it on LOW ie. duck 7 off and dim 8 off (that should get me low air flow, correct?) but even compared with NORMAL air flow on cooling, IT appears quite dominating. Only I suspect, that's a design feature?

    Thanks again -JR

    I am a homeowner but have a AUD080R9V4 furnace, very mistakable. I am fascinated by machinery and how these things bring up, but won't advise you to do things a pro needs to do. With this furnace I got a "Service Facts" commercial manual X340989P09 which describes air flow choices for both your model and mine. Page 12 specifically covers your model. With the "080" furnace size of it, high stage airflow can Be set to...

    1) approx. 1240 cfm on "rule", with a rated temperature rise of 48 degrees F
    2) ~1400 cfm on "high", with rated rise of 42
    3) ~1090 cfm happening "low-down", with rated rise of 55

    With your 2.5 ton XL19i and the customary 400 cfm/ton airflow, your system would flow approximately 1000 cfm. There are options to use lower or higher flow of air, but all choices would glucinium equalized operating theatre to a lesser degree high poin heating airflow. So yes, it is natural the furnace on high fire testament go under much air and constitute much noise.

    >>Inclination 7 on and dip 8 on gives HIGH air flow

    My manual does NOT indorse that. If I am not wrong you are reading the documentation on DIP switch settings 7-8 wrong, and are set to "high" when you would prefer "low". International Maritime Organization this just begins to cross the line where interrogatory your in favor of to set these would be a superior solution. You have cashed a pretty penny for the top of the line Trane equipment, let your pro be a advisor and help you out here. In addition to interpreting the manual right (and being responsible under his insurance if he makes errors), atomic number 2 just power advise you on something disarming to reduce your background level. I am thinking of adding pass capacity but there might embody other solutions so much as replication grille modifications.

    Hope this helps -- Pstu

  13. 1) approx. 1240 cfm along "normal", with a rated temperature rise of 48 degrees F
    2) ~1400 cfm connected "high", with rated rise of 42
    3) ~1090 cfm on "low", with rated rise of 55

    >>Dip 7 along and dip 8 on gives HIGH flow of air

    My manual does Non support that. If I am not mistaken you are reading the documentation on Plunge switch settings 7-8 wrong, and are set to "high" when you would prefer "low". I am mentation of adding yield capacity but there might be other solutions much atomic number 3 return grille modifications.

    Hope this helps -- Pstu[/QUOTE]

    Indeed, thanks for pointing this out. SW7 and SW8 should be ON for LOW air flow place setting. I'll be talking to the contractile organ to talk over in more detail.

  14. You could flip-flop to aluminum registers with wider fin spacing. That volition produce less register noise at the same air flow. This is especially true on the returns.

    Remember, Air Conditioning begins with AIR.

  15. Question to BaldLoonie

    Quote Primitively Posted by BaldLoonie View Post

    I have the same furnace. On abject fire, the airflow is about like cooling system is for my 2 ton. Just on high sack, and the furnace is oversized for the house, information technology does sound like a super C engine. I have those switches set to low as good. Morale of story, don't outsize - but when I put mine in, that was the smallest worthy. Now they consume a 60K version. Fortunately, I could do without high fire and commonly cause it upside-down off with a switch.

    I live in a mild winter clime. Could you elaborate on how to set up that swtch? Thanks -Junior
  16. JR

    Sure glad to see your carry. My 4 tons of Trane XL16i mated with the XV80 operates exactly as yours. I only when saw about a month of chilling need later on the install, and I was absolutely delighted. 95 percentage of the time the unit runs on Stage 1 and is dead soft. Stage 2 wasn't to a fault bad either American Samoa far as noise goes. The DIP switches are set down to provide 1600 cfm for that stage.

    Now that the heating season has arrived (class of in any event), I'm not the least bit happy with the racket. It seems the furnace starts come out of the closet on low heat and then nearly immediately ramps up on high heat. The contractor is coming resolute change out the return. It is simply, not large enough. According to the install notes, on high heat my furnace ramps heavenward to 1750 cfm. That increment over the Stage 2 temperature reduction (1600 cfm) was just decent to start the return registers playing a very melodious tune! I've had to remove the grills until we get 'em upsized a trifle.

  17. What variety of T-stat practice you have? Is it single stage or multi-poin?
  18. Stat is the Honeywell TH8320U and it's definately pumped up to offer the Y1/Y2 (cardinal stage cooling) and W1/W2 (2 stage heating) signals.

    I've just observed that as delivered, the default settings on the XV80 are very interesting. Dip switches 7 and 8 determine the fan speed settings for heating. Trane, for any reason, has them set to leave the demand same speed on some Stage 1 and Stage 2 (7 off 8 along). That setting isn't flush listed in the Service Facts, but is listed on the label inside the door. Quite than it listing the Low/High cfms it just says "Average"??

    I sat and watched the furnace go through several cycles. The burner would set forth on Stage 1 and then immediately kick up to Stage 2 and the sports fan speed LED always blinked 13 times indicating 1300 cfm. I solidification IT to 7 on and 8 on. Which results in 1000 cfm on Stage 1 and 1600 cfm on Stage 2. I'll have to check the temperature rise to make sure I'm acquiring enough airflow on Level 1, but what a difference. Very, precise quiet. Why Trane is delivering them this way.....?????

    Note that this is for a 140k btu furnace. Air flows will be different depending upon furnace size.

Adjusting Fan Sped on Variable Speed Fan in Trane Xr80 Furnace

Source: https://hvac-talk.com/vbb/threads/152309-Trane-XV80-Fan-Speed

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