Trane equipment match

[jorams]

I have purchased 2 units: 4-ton XL19i 2TTZ9048B. The contractor installed a 4-ton air handler (4TEE3F49A) and a 5-ton AH ( 4TEE3F65A). Is this OK for the 4-Ton unit or should i ask for the smaller AH? Any drawbacks?

Also, I asked for the CleanEffects filter. Any thoughts?

[a/c doctor]

I hope you got that model # of the air handler wrong because that is the 410-a air handler on a r-22 condenser.

[mayguy]

9 tons of cooling?? How big is the home, and where are you out of?

[jorams]

It's a 2-story, 3700 Sq Ft. house in South Fl.

The model numbers ARE correct. Is that a problem and why?

Is there a problem with the larger air handler being connected to the smaller air unit?

what's the best way to solve this?

[tigerdunes]

jorams,

The XL19i condenser whether AC or heat pump is for R-22 refrigerant only.
AC doctor is absolutely correct. It is common to upsize your air handler although I would want an explanation why this was done (usually an availabilty issue) and if it affects your SEER efficiency. I would want these air handlers changed out to the TWE model if this was my home. And BTW without knowing more about your home, I suspect you are oversized. Probaby won't hurt you since these are two stg systems except in your upfront equipment cost.

IMO

VARIABLE SPEED AIR-TITE™ AIR HANDLERS (R-22 Refrigerant)
Model Nominal Cooling
Capacity (BTUH) Nominal Tons Height
(in.) Width
(in.) Depth
(in.)
TWE031E13F 31,000 2.5 43 21.5 21
TWE037E13F 37,000 3.0 45 23.5 21
TWE040E13F 40,000 3.0 52 26 21
TWE049E13F 49,000 4.0 58 26 21
TWE065E13F 65,000 5.0 63 26 21
TWE062E13F 64,000 5.0 63 26 21


VARIABLE SPEED AIR-TITE™ AIR HANDLERS (R410A Refrigerant)
Model Nominal Cooling
Capacity (BTUH) Nominal Tons Height
(in.) Width
(in.) Depth
(in.)
4TEE3F31A 31,000 2.5 43 21.5 21
4TEE3F37A 37,000 3.0 45 23.5 21
4TEE3F40A 40,000 3.0 52 26 21
4TEE3F49A 49,000 4.0 58 26 21
4TEE3F65A 65,000 5.0 63 26 21
4TEE3F62A 64,000 5.0 63 26 21

Pote

[jasruby79]

It is common to upsize your air handler although I would want an explanation why this was done (usually an availabilty issue) and if it affects your SEER efficiency.

tigerdunes: Affects SEER rating down or up? (I assume down, but can you explain?)

jorams: According to many contracts where I live the inside coil is commonly upsized because of our high altitude. Probably not an issue in S. Florida. If your contractor cannot give you a viable reason for the upsizing, and SEER rating is affected negatively I would want a matched system.

[beachhvac]

TWE031E13F 31,000 2.5 43 21.5 21
TWE037E13F 37,000 3.0 45 23.5 21
TWE040E13F 40,000 3.0 52 26 21
TWE049E13F 49,000 4.0 58 26 21
TWE065E13F 65,000 5.0 63 26 21
TWE062E13F 64,000 5.0 63 26 21

The above AHU's model #'s have changed to 2TEE3F31(37,40,49,65)A1000A

Right now you have XL19i, R22 heat pump on 4TEE, R410a air handlers. The AHU's need to be changed to 2TEE air handlers.

[pstu]

I'm just curious, can anyone tell me what would happen if the install went through with R410 air handlers on a R22 system? This is the first time I learned there was a difference. This is a homeowner asking in case you could not tell<g>, but you don't have to over-simplify the answer.

Thanks in advance -- Pstu

[tigerdunes]

Based on the CEE HVAC directory, the 2TEE3F49A1 and TWE049E13 air handlers give you the highest rated SEER of 17.5 for a 4 ton XL19i condenser.
Apparently the TWE049 is discontinued and replaced by 2TEE3F49A1.

http://www.ceehvacdirectory.org

[jorams]

OK. I'm at a loss here. I even called Trane and THEY do not have a clear response.

I have an XL19i with R-22 and an air handler for R-410. Can they work together? Does it void my warranty? Should I replace one or the other?

Right now, they work fine (cooling-wise)...

[mark beiser]

OK. I'm at a loss here. I even called Trane and THEY do not have a clear response.

I have an XL19i with R-22 and an air handler for R-410. Can they work together? Does it void my warranty? Should I replace one or the other?

Right now, they work fine (cooling-wise)...

The only difference is the expansion valve in the coil in that air handler.
Your system may be blowing cold air, but it is not working "fine" with an expansion valve for R-410a, it MUST be fixed. The valve that came in that air handler will not meter refrigerant properly in the cooling mode.

At the very least the expansion valve needs to be replaced with the correct valve for R-22.

[jorams]

Thanks for the help, guys!!!!

[jrbenny]

I bet they got the ahu installed, and realized it was incorrect. They probably changed the TEV. I've seen it done several times.

I'd still be calling the installing contractor for clarification.