Thermostatic Controls - Visionpro IAQ+Coleman Modulating Furnace+Dehum

Hopefully you guys can help with this hookup as it appears my 'hvac' installers are clueless in how this thermostat is suppose to work as far as dehum functionality goes. I just need to know how to wire the EIM of the IAQ to the Furnace/Variable Speed blower in our new Coleman Modulating furnace. Just let me know if you need anything as far as model numbers or owners manuals and I'll do whatever I can. I understand I need to jumber Dhum1 and am more concerned with the connection to control the blower on the furnace. PLEASE HELP!!!!!!!

Welcome aboard.

I'll need to know what the model # of your furnace is.

Also how many ton is the A/C?

A/C is a Coleman 8t Echelon 2 Stage / 2 Ton model:
AC8B024F1

Furnace is a Coleman Echelon Modulating Furnace - 60k BTU - Variable speed blower model:
CP9C060B12MP11A

We also have the coleman (non-powered) humidifier but they did hook that up. Whether its right or not I'm unsure as I haven't looked at it. Thanks for any help you can provide!

Ok, Thanks for the info.

I won't be able to look at it till late tonight.

Have a great day!

For Dehumd wire up, Wire from EIM DHUM2 to DHUM on the board, then set Humidistat jumper wire to "Yes".

Cool jumper to ML and ADJ jumper to B (let me know if the air flow is too week)

Cont. Fan jumper.. Do you run your fan 24/7"

Delay Tap. Set it to D

Humidifier, A wire from one of the R's down to HUM1, then HUM2 goes to one of the wire on the humidifier, then other wire on the humidifier goes to C.

If you want to give me the IAQ installer set up, I'd be happy to go over it to see if all is good.

For Dehumd wire up, Wire from EIM DHUM2 to DHUM on the board, then set Humidistat jumper wire to "Yes".

EIM DHUM2 to DHUM on *furnace* board?



Cool jumper to ML and ADJ jumper to B (let me know if the air flow is too week)

I assume this is to setup fan speeds, should I let you know what they WERE set to?



Cont. Fan jumper.. Do you run your fan 24/7"


No, do not run fan 24/7


Delay Tap. Set it to D


Also assume this is on the furnace. Will post what it is before I do it maybe?



Humidifier, A wire from one of the R's down to HUM1, then HUM2 goes to one of the wire on the humidifier, then other wire on the humidifier goes to C. Will chek their work out.

EIM DHUM2 to DHUM on *furnace* board?
Yes


I assume this is to setup fan speeds, should I let you know what they WERE set to?
Yeah, Why don't ya.


No, do not run fan 24/7
I would suggest running it in the heating mode or when the windows are closed to keep the air moving. With this fan running, it will give you a much better comfort in your home. With the air moving all times, it will keep the temps even all over, and the air is being filtred. What kind of filter are you using? Fan I don't advise in cooling mode..


Also assume this is on the furnace. Will post what it is before I do it maybe?
let me know what it was set to.

Fill me in of what you have for a home? (Split level, or 2 story,, sq ft of it.)

Ok, dhum2 is wired to dehum terminal on furnace. Moved jumper to yes on humidistat. Cool jumper was on H and ADJ was on A.

Delay was also set to A. Humidifier looks ok.

How will I know if airflow is too weak?

Yes



Yeah, Why don't ya.



I would suggest running it in the heating mode or when the windows are closed to keep the air moving. With this fan running, it will give you a much better comfort in your home. With the air moving all times, it will keep the temps even all over, and the air is being filtred. What kind of filter are you using? Fan I don't advise in cooling mode..


let me know what it was set to.

Fill me in of what you have for a home? (Split level, or 2 story,, sq ft of it.)

Home is single story with basement. Total sq. feet is 1800. Filter is 4?" pleated I believe. Whatever the basic COleman filter is.

*NINJA EDIT* I changed the Cooling and ADJ jumpers to MH - C. The other setting you could barely feel the air come out of the register. I'll try these settings for a bit and see how it goes. I know the lower the fan speed the more humidity removal.

Home is single story with basement. Total sq. feet is 1800. Filter is 4?" pleated I believe. Whatever the basic COleman filter is.
If it's the basic fiberglass filter, then it would be 1" rather than 4".


I changed the Cooling and ADJ jumpers to MH - C. The other setting you could barely feel the air come out of the register. I'll try these settings for a bit and see how it goes.
You are okay with this setting, My ML-B moves about 760 CFM, Ideal air is 400 CFM per ton, and you have 2 ton, should be moving around 800 CFM. With your setting now moves about 900, but the blower will slow down 15% of it's full speed if the humidity gets high.

I set my IAQ at 45% humidity.. If the humidity goes over 50% if there is no call for cooling, the IAQ will force the A/C on to "overcool" to try to remove the humidity.


Delay was also set to A.
I like the "D" setting.. With the blower ramping up to 63%, it will allow the coil to get nice and cold and that will pull the humidity out of the air pretty good.

If it's the basic fiberglass filter, then it would be 1" rather than 4".


You are okay with this setting, My ML-B moves about 760 CFM, Ideal air is 400 CFM per ton, and you have 2 ton, should be moving around 800 CFM. With your setting now moves about 900, but the blower will slow down 15% of it's full speed if the humidity gets high.

I set my IAQ at 45% humidity.. If the humidity goes over 50% if there is no call for cooling, the IAQ will force the A/C on to "overcool" to try to remove the humidity.



I like the "D" setting.. With the blower ramping up to 63%, it will allow the coil to get nice and cold and that will pull the humidity out of the air pretty good.

I have been monitoring the thermostat throughout the day with these settings and currently with the thermostat set to 75 deg the humidity level is at 38% which is the lowest I"ve seen since installing the system (though it is evening right now). I have the dehumidify setting also at 45%. I know you said the system should put out about 800cfm as its a 2 ton, but what about the low speed of 595 at these settings. Safe right? Why would they leave the blower speeds set so high? *Edit: Its a pleated filter. 4-5" I spose without measuring.

I have been monitoring the thermostat throughout the day with these settings and currently with the thermostat set to 75 deg the humidity level is at 38%
That's a good reading.. I've found out since I got my VS system, I had to bump the temp up to 76˚, cuz in the past I've always ran the A/C at 72˚ to be comfortable, now the humidity is pulled out of the air, it made it cooler!


but what about the low speed of 595 at these settings. Safe right?
Yes, it's fine.. When the system runs 1st stage, it's not the full 2 ton (24,000 BTU) of cooling, it's maybe half of that. (don't have the specs in front of me.)


Why would they leave the blower speeds set so high?
It may of been set that way from the factory, or lot of time, lot thinks "higher is the better".


*Edit: Its a pleated filter. 4-5"
With that filter, I'd run the fan in "ON" mode in the winter, that'll help with your IAQ of your home.

With that filter, I'd run the fan in "ON" mode in the winter, that'll help with your IAQ of your home.

On would be better than Circ in the Winter? Would Circ be better than Auto in the summer? What should I set the Cont. jumper on the furnace for assuming I was going to be leaving the fan 'On' this winter?

I'd set the Cont. fan to L. Will be a nice soft air flow just enough to move the air around in the house.

In the summer it best to set the fan in AUTO, You may use Circ say over night hours to just move the air every now and then.. If you run the fan ON in the summer it just going to throw the humidity back into the air after the A/C shuts off, so that's why lot of us don't suggest running the fan in the summer.

Winter, run it in ON mode, and it will be easier on the motor than the stop and go all the time in CIRC mode.