Question about XL20i + TAM7 + XL950

[vmocanu]

Hi,

They just installed the following system:
Air handler: TAM7AOC42
Condenser: 4TT20048
Clean Effects: TFD235CLA
The first crew installed a XL800 thermostat (not the one I ordered), but agreed to come back Monday to replace it with the XL950 (the correct one).

When they installed the XL950, the guy told me that the wiring was all wrong because of the XL800, and had to rewire the system. He messed with the condenser and with the air handler. He installed a BAY24VRPAC52DA relay panel right on the air handler.

From the XL950 installation guide, it seems that the BAY24VRPAC52DA relay panel is used to make the XL950 talk to non-communicating systems. But I was told by the sales guy that my system is a communicating system and the XL950 would be able to talk to it.

Why would the second installer have added the BAY24VRPAC52DA relay panel when he installed the XL950? Does this seem right?

Thanks in advance for your reply.


P.S. Oh, and besides that, when he left, the outside temperature sensor reported 18 degrees (clearly incorrect for South Florida). He said that it would "fix itself" in 24hrs. In fact, the XL950 started showing the correct outside temperature only after I registered it and requested weather information vie the Internet. But I suspect that this is only masking the incorrect reading from the outside temperature sensor.

[jimj]

A fully communicating system does not need the relay kit.

[jimj]

Should of had a TAM8

[SoFlaDave]

TAM8's (communicating)are not available at least in my area so the relay panel is a necessity. As for the outdoor temp sensor, I would try temporarily disabling the wifi and see if the sensor reports normal. If not it may be a set up issue. Depending on where the sensor wires are going, whether directly to the tstat or to the relay panel or if its only using the wifi info. Basically it needs to told what the source for outdoor temp.

[jimj]

There also is a software upgrade for the Tstat, did your dealer do it?

[vmocanu]

I disabled the wireless network. Outside sensor still shows 18 degrees. I'll call the dealer to fix it.

The software version is still 1.1. Upgrading is certainly an option if it helps.

[forcryinoutloud]

The TAM7 is non communicating and requires the additional relays. Just installed a TAM8 with a 4TWZ0048 on Tuesday, customer didn't opt for the 950 stat though.

[SkyHeating]

You can upgrade to version 2 software via the Trane website. Download the file after you find it on the XL950 page and put the files onto an SD card. Insert the SD card and reset the thermostat. This will upgrade you and allow you to access your thermostat via a phone with the Schlage link software. If anybody wants a code for 6 months free access send me a message.

[beenthere]

forcryinoutloud.

This is the Ask Our Pro's forum. In order to post advice here, you must have verified qualifications and have been approved by the AOP Committee.

You can find the rules for posting and qualifications here.

[forcryinoutloud]

forcryinoutloud.

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PM sent

[beenthere]

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