I don't know why Trane does that.
Originally Posted by ascj
But, it does tend to make the air a bit warmer when the HP first comes on.
For heat pump, it will give a better comfort. The air flow will start off slower to allow the coil to warm up, then ramp up next speed to give a better comfort and after 8 min, then the blower will ramp up full speed.
Originally Posted by ascj
[quote=jerrod6;2822672]I have a VISION PRO not the IAQ and I've tried the Circ setting in the winter. It uses this 35% rule and the fan comes on from time to time, but this setting seems to be a completely separate program that is not integrated with the rest of the T stat. quote]
I have more questions for a few of the last several postings, but I'll need to wait for another day or so.
Had a friend who past away at 37 years old in Indy while camping in a trailer, carbon monoxide. Knew his family for many long years. Really sad.
jerrod6 ... I was just reading about a Tstat like you mentioned, may've been same one even.
I'm curious if anyone nows some answers here (as I'm certainly no techy on these things, just trying to understand) .......
If I buy a Tstat that offers the 35% fan speed options as you mentioned, surely that fan control through the Tstat is separate & apart from the fan control wiring hookups mentioned in the Comfort-R Pocket Guide isn't it?
Is this accurate? It sure sounds like it from jerodd6's experience.
And with this in mind ... how does fan wiring for Comfort-R enterplay with this scenario?
I might not even need to use the 40% constant-on wiring setup as Pocket Guide diagram showed. (I am wanting lowest fan speed available for constant-on.)
I'll leave it here for now & see what info comes aboard here, if any.
The stat just runs the fan for 35% of the time out of an hour.
It doesn't know or care what blower speed or profile the furnaces, or air handlers board is set for.
I see you took your sense of humor with you when you moved.
First, I am sorry to hear about your friend. Sudden death is always hard.
Originally Posted by jerrod6
I am not a PRO so this is just what I THINK from my experience.
When my unit was first installed the control board was not wired correctly for Comfort R. I didn't notice this because it was in the winter, in the summer it was set correctly and comfort R began operating as documented.
With the correct board setup the low speed used when the heating cycle is off, seems to be slower than the low speed used without the board being set up for comfort-R. This may NOT be true and it just may be my imagination and I have no way to verify this because on my own I cannot reconfigure the board to stop using Comfort R.
The stat just runs the fan for 35% of the time out of an hour. It doesn't know or care what blower speed or profile the furnaces, or air handlers board is set for.
I reallize how I indeed misread jerrod6's last post, he was indeed referring to what you were speaking to,
intermittent fan 35% of the time. "My bad" on that.
However, the following Tstat info that I had just been reading shows a fan speed option was present (on Tstat Model below) for changing Constant-On Fan Speed per the following Manual as follows (although info may be outdated from Web):
Pub. No. 22-5209-01 TCONT402AN32DA (Manual)
Menu Item: Continous Fan Airflow
Setting (Choices) (Press UP or DOWN arrow): 35% - 100%
Step (Press Mode or Fan): 62
Are there other Tstats today that offer options to change constant-on fan speeds I wonder (& to lower levels like 35%)? That option indeed is what I'd like to have in a Tstat.
And then my previous questions to this as to Comfort-R overlay(?), still applies (if anyone knows anything on that). It's down a little in this post.
Originally Posted by jerrod6
I have a VISION PRO not the IAQ and I've tried the Circ setting in the winter. It uses this rule and the fan comes on from time to time, but this setting seems to be a completely separate program that is not integrated with the rest of the T stat.
As per above, I mistakenly read your post wrong. You didn't have 35% fan speed, but rather fan activity 35% of the time.
Interesting that it seemed slower at times like you said though.
Thats a Special thermostat.
Made to Tranes specs, to do that.
You won't find another brand of thermostat that can do that on a Trane. Its OEM specific.
See This Thread
Info is not outdated.
If you have a variable speed blower (which the furnace you mentioned will have)
AND the BK connected to the BK terminal in the stat....
then you can adjust the fan speed when the fan is in the ON position.
Press and hold the Fan button, then an option pops up where you
can adjust the airflow from 35-100%
If the stat is connected to the outdoor temp sensor,
it can also be set up to run the blower at 80% when
the outdoor temp is below 87 degree's
THat stat can also be connected to a humidistat
(wished it was built in arghhh)
and can turn run the blower at 80% if the humidity is
high and the temp in the home is within 2 degree's of setpoint.
If you do get this stat and BK is enabled,
then be sure not to turn on Comfort-R at the furnace.
The stat will control fan timing and speed control.
This stat is my favorite,
there are alot of people on this site that
really like the Honeywell IAQ
Although I'm not familiar with the Honeywell stat,
I'm pretty sure it can be set up to get the most
out of the variable speed blower.
I think it has the humidistat component built in,
which is a plus.
The IAQ can't do PWM of the Trane, or Carrier blower.
Originally Posted by wormy
That's interesting insight for that Trane non-programable TCONT402 Tstat.
Do you know if the TCONT803 (programable version) has that capability to adjust the airflow from 35-100% through the Tstat?
In the land of the blind.....the man with one eye is king....