Infinity 96 & infinity control

[mjocan]

I have set my furnace to run on low fan speed constantly when there is no call for cool or heat. I have set the programmable fan on the thermostat to off. Recently after the single stage air conditioner runs through a cycle the fan stops, the furnace sits idle for a couple of minutes and on comes the fan in low again. It runs normally in low until after the next air conditioning cycle.

Why is it doing this?

[york_hvac]

Because when you have the fan on all the time, if you run it right after the A/C has shut off, the water on the coil will re-evaporate into the air, causing higher humidity. It will stay off and then come back on later to get the rest of the coolness of the coil. This is a normal feature with the Infinity.

[Christheheatingdude]

The Infinty control sounds so awesome, cant wait to use one on a job!

[seadragon]

I've had the Infinity Control for about a year now and it IS awesome!

The other thing that is cool (no pun intended), it that when there is a call for cooling, the outdoor unit comes on but the blower remains off on the furnace for about a minute. Then the blower turns on and very slowly ramps up to speed. I guess this allows the coil to cool down very quickly before air passes over it.

Yes, I am a nerd. I do sit there and observe these kinds of things!

Oh, yes, one more thing I think is cool. The control will operate the blower at either 350 cfm or 400 cfm depending of how quickly or slowly the house is cooling down. It runs at the lower speed for humidity removal and jumps up to a higher speed when needed to cool down the house. AND it makes absolutely NO NOISE. No relays clicking right outside our bedroom door.

It really is an amazing control!

[dash]

Originally posted by seadragon
I've had the Infinity Control for about a year now and it IS awesome!

The other thing that is cool (no pun intended), it that when there is a call for cooling, the outdoor unit comes on but the blower remains off on the furnace for about a minute. Then the blower turns on and very slowly ramps up to speed. I guess this allows the coil to cool down very quickly before air passes over it.

Yes, I am a nerd. I do sit there and observe these kinds of things!

Oh, yes, one more thing I think is cool. The control will operate the blower at either 350 cfm or 400 cfm depending of how quickly or slowly the house is cooling down. It runs at the lower speed for humidity removal and jumps up to a higher speed when needed to cool down the house. AND it makes absolutely NO NOISE. No relays clicking right outside our bedroom door.

It really is an amazing control!



Your missing the UVC light!LOL!

[seadragon]

Originally posted by dash
Your missing the UVC light!LOL! [/B]

Damn! I knew there was something missing! ;-)

[jthomas21]

Originally posted by seadragon
Oh, yes, one more thing I think is cool. The control will operate the blower at either 350 cfm or 400 cfm depending of how quickly or slowly the house is cooling down.I've seen mine run as low as 325cfm/ton when dehumidifying in comfort mode, 350 is normal for comfort mode, 375 is efficient mode, and 400 when set to MAX. I wish it were smart enough to auto range from 325-400 depending on need, but it doesn't appear to work that way. During the hot humid month's leave it in comfort mode. I'm now running it in efficient mode, because I don't need to dehumidify.

[wyounger]

Originally posted by jthomas21

Originally posted by seadragon
Oh, yes, one more thing I think is cool. The control will operate the blower at either 350 cfm or 400 cfm depending of how quickly or slowly the house is cooling down.I've seen mine run as low as 325cfm/ton when dehumidifying in comfort mode, 350 is normal for comfort mode, 375 is efficient mode, and 400 when set to MAX. I wish it were smart enough to auto range from 325-400 depending on need, but it doesn't appear to work that way. During the hot humid month's leave it in comfort mode. I'm now running it in efficient mode, because I don't need to dehumidify.

Mine has run as low as 275 cfm/ton, at least for short periods, and has gone to at least 400 cfm/ton (maybe 425?)- both in comfort mode. It will auto-range depending on need... you just haven't put it in the right conditions yet. That said, the 400+ cfm/ton was at 6 pm on the day it had been installed, so it was in the high 80s in the house and it had a lot of sensible load to cover before worrying about latent much.

In efficiency mode or comfort mode, mine runs 350 cfm/ton unless there's a pretty obvious reason for it to do something different, which in my case, in the summer, is basically never. I'm not sure why other people get somewhat different results. In my application the only difference I can really find is that it starts up the blower sooner into a cooling call in Efficiency mode than it does in Comfort. It might also run it a bit longer after the end of the cooling call, but I'm not as sure on that one.

[Edited by wyounger on 09-13-2005 at 09:46 AM]

[mjocan]

Thanks for the input York hvac, to take this one step further. In the heating season will the infinity then turn off the fan when the gas valve is actuated on a call for heat to allow the heat exchanger to warm up then speed up the fan to warm the house?

[seadragon]

Originally posted by mjocan
Thanks for the input York hvac, to take this one step further. In the heating season will the infinity then turn off the fan when the gas valve is actuated on a call for heat to allow the heat exchanger to warm up then speed up the fan to warm the house?

Yes it will.

[mjocan]

Thanks seadragon, a question for you, What is a carrier media filter like? With this new furnace MVP80 I am now down to the cheapo 3 for a buck fiberglass media filters because the system pressure check is sensitive to restrictive filters. How is the carrier media filter different?

[seadragon]

Originally posted by mjocan
Thanks seadragon, a question for you, What is a carrier media filter like? With this new furnace MVP80 I am now down to the cheapo 3 for a buck fiberglass media filters because the system pressure check is sensitive to restrictive filters. How is the carrier media filter different?

Well, I've only ever had the media filter in place so I don't know what it is like compared to other filters. I do know that I only have to change it after about 1 year. As far as restrictions, my Infinity Control reports a static pressure of 0.67 when it is running full tilt (high blower speed). I think that is a little higher than ideal, but the system seems to run fine. Our house still gets dusty and I think the general advice is that these filters really are meant to keep your furnace clean, not your house. I think the media filter is good though at what it does.

[kpt_krunch]

Nice to read the positive reviews of the Infinity Controller. I'm building a new house and meeting with the H-VAC contractor tomorrow.

Since I have an Infinity furnace (two of them actually) in my current home, it was a no brainer for me to upgrade the furnace in my new home to an Infinity model.

Rather than going with two furnaces (it will be a two storey, 2808 sq/ft home) I decided to stick with one and put 3 zones in (one for each floor and the basement) and of course, control it all with the Carrier Infinity control. The reason I want one furnace was for a possible Infinity A/C unit we may install if the house gets hot in the summer. I'd want the whole house to take advantage of it.

I'll ask my H-VAC guy tomorrow, but I was wondering, do I need a Carrier Humidifier (Getting Hardwood floors and the winters here very very dry) for the Infinity control to properly monitor my humidity level, or will any Humidifier do?

[mjocan]

Any good quality flowthrough humidifier will work, General Aire, Honeywell, April Air these are all good brands.

[flysmiley]

I just had my furnace changed out to the Infinity 96. My question is this: the contractor that installed it did not use the Infinity Control. Will my furnace operate properly with a standard Carrier single stage thermostat???

[dash]

Properly yes,but no where close to what the Infinity Control can do.

[flysmiley]

Should I request that they put an Infinity Control on? Should it have been part of the install to start with? How much more are they than a TSTATCCPQ501 that was installed?

[Christheheatingdude]

It probably should have presented as an option to you, but it is not mandatory that it be installed with the unit.

[dash]

Originally posted by Christheheatingdude
It probably should have presented as an option to you, but it is not mandatory that it be installed with the unit.

Ditto!

[heatpumpguru]

That is SAD theat they did not offer or include the INFINITY control with the furnace. Hey, DASH see the 21 SEER unit coming next year, I have my YDB and MVP waiting for us to get slow enough for us to put it in. My hope if I drag my feet long enough (May 06) I will get one and can send back the YDB!!!!

[jthomas21]

I'm sure the 20 SEER HP will be pretty impressive. I'll probably hold out and get the 15 SEER that will be similar to the current YDB.

[htinglky]

Originally posted by dash

Originally posted by seadragon
I've had the Infinity Control for about a year now and it IS awesome!

The other thing that is cool (no pun intended), it that when there is a call for cooling, the outdoor unit comes on but the blower remains off on the furnace for about a minute. Then the blower turns on and very slowly ramps up to speed. I guess this allows the coil to cool down very quickly before air passes over it.

Yes, I am a nerd. I do sit there and observe these kinds of things!

Oh, yes, one more thing I think is cool. The control will operate the blower at either 350 cfm or 400 cfm depending of how quickly or slowly the house is cooling down. It runs at the lower speed for humidity removal and jumps up to a higher speed when needed to cool down the house. AND it makes absolutely NO NOISE. No relays clicking right outside our bedroom door.

It really is an amazing control!



Your missing the UVC light!LOL! and using tyhe TDB a/c!

[seadragon]

Yes, I would have purchased the TDB, but at the time it was not yet available (or so my dealer told be). Their top of the line at that time was the TZA.

Oh well, the TZA has served us well to date.