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Old 09-02-2009, 05:27 PM   #31
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


A few things I noticed since last night.

1) Beenthere has already addressed (Y1 and Y/Y2)

2) So when in heating mode and your outdoor unit goes into defrost. Wire from condenser board W2 to W2 at A/H. This will tell backup heat to come on if and when defrost is energized.

3) To calibrate temp, go into config. mode #700. I would give the stat a few hours to get used to space temp before calibrating. It should read temp at it's location.

4) I don't like setting dehum setting much below 52%. I find any lower it increases electric usage too much.

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Old 09-02-2009, 06:08 PM   #32
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Buy yourself a good electronic hygrometer (UEI is a good inexpensive brand) http://www.ueitest.com/product-dth10.html
and test your indoor humidity. Those tstats have a calibration adjustment + or - 5% I believe. If the actual humidity is 45 % calibrate the tstat to 45% or you won`t get good results. They are not always perfectly calibrated by Honeywell.

I was in Orlando several yrs ago, never seen lightning like that before, and humidity, wow.

Good Luck

Last edited by yuri; 09-02-2009 at 06:11 PM.
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Old 09-02-2009, 06:44 PM   #33
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Quote:
Originally Posted by KAVF View Post
A few things I noticed since last night.

1) Beenthere has already addressed (Y1 and Y/Y2)

2) So when in heating mode and your outdoor unit goes into defrost. Wire from condenser board W2 to W2 at A/H. This will tell backup heat to come on if and when defrost is energized.

3) To calibrate temp, go into config. mode #700. I would give the stat a few hours to get used to space temp before calibrating. It should read temp at it's location.

4) I don't like setting dehum setting much below 52%. I find any lower it increases electric usage too much.

Ok so the white wire on the outside unit that is dangling needs to go to W2 and the white wire coming from outside will go to the air handler W2 then.

My humidity is reading 45% at this time. Do i need to set the humidity settings in the thermostat somewhere?
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Old 09-02-2009, 06:57 PM   #34
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


The actual RH readout of what the tstat is telling you may be out by up to 5% or more. You may need to calibrate it so it reads the actual house humidity or it will be inaccurate, or cost more to run.

installer setup function 701, I checked for you.

Last edited by yuri; 09-02-2009 at 07:07 PM.
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Old 09-02-2009, 07:24 PM   #35
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


0370 Indoor humidity sensor
1 Internal sensor in thermostat
0 Sensors disabled
E Auto Discover **

0372 Indoor humidification control
E Auto Discover **
0 Off
1 Humidify (no frost protection)
3 Humidify (with frost protection)
0374 Humidifier fan action
0 Humidify only while fan or heat is on
1 Humidify forces fan on
2 Humidify only when heat is on
3 Humidifier operates independent of fan

0379 Dehumidificationcontrol
0 No dehumidification control
1 Dehumidify with air conditioner
3 Whole house dehumidifier

0383 Over-cooling limit
3 3F (1.5C)
[Other options: 1, 2 (1F or 2F/0.5C to 1.5C)]
0384 Dehumidificationfan action
0 System fan turns on with dehumidifier
1 Dehumidifier operates independent of fan
0400 Ventilation control
0 No ventilation
1 Ventilation always allowed
2 Ventilation not allowed during sleep period
3 Vent all with lockouts
4 Vent off sleep with lockouts

0401 Number ofbedrooms
2 Two bedrooms
[Other options: 1 to 6]
0402 Size of house
10 1,000 square feet
[Other options: 11 to 50 (1,100 to 5,000 square feet)]
0403 Ventilation level
160 CFM (cubic feet per minute)
[Other options: (30 to 195 CFM)]
0404 Max. ventilation% limit
50 50% ventilation limit
[Other options: 30% to 60% or 100%]
P Meets ASHRAE 62.2 standard
F Does not meet ASHRAE 62.2 standard
0405 Ventilation fanaction
1 Ventilation on forces fan on
2 Ventilation does not force fan on
0406 Ventilation in high humidity
1 On (heat mode only)
0 Off
0430 Ventilation lockout
0 Disabled
1 Lockout for high temperatures **
2 Lockout for low temperatures **
3 Lockout for high and low temperatures **
0431 Ventilation lockout high temperature
100 100F (38C): Settings 5F apart (3C)
[Other options: (90F to 110F/32C to 43.5C)]
0432 Ventilation lockout low temperature
-10 -10F (-23.5C): Settings 5F apart (3C)
[Other options: (-20F to 0F/-29C to -18C)]
0450 DATS Inhibit
0 Disabled: Settings 5F apart (3C)
[Other options: (35F to 65F/1.5C to 18.5C)]

0530 Adaptive Intelligent Recovery
1 On **
0 Off
0540 Program periods
4 4 program periods (Wake, Leave, Return, Sleep)
2 2 program periods (Wake, Sleep)

0580 Compressor offtime (min.)
5 5 minute compressor off time **
[Other options: 0 to 4 minutes]
0600 Heat temperature range stop
90 Max. heat temperature setting is 90F (32C)
[Other options: 40 to 90F (4C to 32C)]
0610 Cool temperature range stop
60 Min. cool temperature setting is 60F (15C)
[Other options: 60-99F (15C to 37C)]
0640 Clock format
12 12-hour time (i.e., "3:30 pm")
24 24-hour time (i.e., "15:30")
0650 Extended fantimer (heat)
0 Off
[Other options: Fan runs for 30, 60, 90 or 120 seconds after call for heating ends]
0660 Extended fantimer (cool)
0 Off
[Other options: Fan runs for 30, 60, 90 or 120 seconds after call for cooling ends]
0680 Heat temperature control
2 Standard temperature control (recommended)
1 Choose if room is warmer than set temperature
3 Choose if room does not reach set temperature

0690 Cool temperature control
2 Standard temperature control (recommended)
1 Choose if room is cooler than set temperature
3 Choose if room does not reach set temperature

0700 Temperature display offset
0 Thermostat displays actual room temperature
[Other options: -3F to +3F offset (-1.5C to 1.5C)]
0701 Humiditydisplay offset
0 Thermostat displays actual room humidity
[Other options: -12% to +12% offset]



Can someone tell me what settings to use? It looks like huumidification is off by default. Am i correct?
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Old 09-02-2009, 07:27 PM   #36
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Quote:
Originally Posted by yuri View Post
The actual RH readout of what the tstat is telling you may be out by up to 5% or more. You may need to calibrate it so it reads the actual house humidity or it will be inaccurate, or cost more to run.

installer setup function 701, I checked for you.

Thank YOu, it looks like you have up to a 12% varaince to play with. I will order the meter tomorrow. Thanks for the information on it.
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Old 09-02-2009, 07:30 PM   #37
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Set it to use the A/C to dehumidify. And don't enable extended fan on time.

What other devices/appliances do you have that you will connect to the IAQ.
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Old 09-02-2009, 07:55 PM   #38
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Quote:
Originally Posted by beenthere View Post
Set it to use the A/C to dehumidify. And don't enable extended fan on time.

What other devices/appliances do you have that you will connect to the IAQ.
Just an outside sensor. What else can be hooked up to the IAQ?
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Old 09-02-2009, 08:00 PM   #39
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Humidifier.
Dehumidifier.
Fresh air vent.
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Old 09-02-2009, 08:14 PM   #40
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Quote:
Originally Posted by beenthere View Post
Humidifier.
Dehumidifier.
Fresh air vent.

Ahh ok. I see thanks. I have none of those on my system.
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Old 09-02-2009, 08:23 PM   #41
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


This is a better tester and the one I use:
http://www.ueitest.com/product-dth31.html
It is a psychrometer and does temp also, slightly more accurate for humidity according to the specs for both.

You MUST twist open the cap B4 using it or it will get damaged.
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Old 09-02-2009, 08:25 PM   #42
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Quote:
Originally Posted by beenthere View Post
Set it to use the A/C to dehumidify. And don't enable extended fan on time.

What other devices/appliances do you have that you will connect to the IAQ.

I forgot to ask. The dipswitch 7 and 8 are set to dehumidify. I need to turn that feature off correct since the IAQ will now handle that.
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Old 09-02-2009, 08:27 PM   #43
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Read my post above yours, the psychrometer is more accurate for RH readings the other unit is okay for general use.
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Old 09-02-2009, 08:33 PM   #44
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Mot real familar with that air handler anymore.

But I believe you would be better off turning them off.

The IAQ will be more economical to usethat way.
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Old 09-02-2009, 08:42 PM   #45
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Need HELP swapping a Vision pro 8320u1008 to an IAQ one


Quote:
Originally Posted by yuri View Post
Buy yourself a good electronic hygrometer (UEI is a good inexpensive brand) http://www.ueitest.com/product-dth10.html
and test your indoor humidity. Those tstats have a calibration adjustment + or - 5% I believe. If the actual humidity is 45 % calibrate the tstat to 45% or you won`t get good results. They are not always perfectly calibrated by Honeywell.

I was in Orlando several yrs ago, never seen lightning like that before, and humidity, wow.

Good Luck
The lightning scares the heck out of my dog.

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