Results 27 to 30 of 30
11-03-2012, 07:04 PM #27
Ok, standard control.
I took it that it was controlled by an od dew point controller... Which is something I'd like to find. I'm still searching for a cost effective digital version to work with your ventilating dh's.
11-03-2012, 07:58 PM #28Which makes more sense to you?
CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%
DO THE NUMBERS! Step on a HOMESCALE.
What is comfort? Well, it AIN'T just TEMPERATURE!
Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.
11-03-2012, 09:53 PM #29
I did this to my own ventilating DH, and it works absolutely superb. The controller I'm using is an old school Carrier dew point controller that is no longer available.
11-03-2012, 10:34 PM #30
It is getting complicated. First, if the home is occupied, the home should be getting a fresh air change in 4-5 hours. This is regardless of the outdoor dew point. When the outdoor dew point is low, the moisture from the occupants is purged and the indoor %RH will be <50%. As the outdoor dew point rises, the indoor %RH will rise. Without any cooling load, the dehu will run.
If the home is unoccupied, the indoor %RH will respond to the outdoor dew point. So ventilate when occupied and dehumidify when +50%RH.
You have a good case if you have an indoor moisture source that is not occupant related. Fish tanks and open pools is a good example. I am not aware of any inexpensive dew point controllers.
We currently do not have a dew point controller but could do it based on outdoor temps and %RH.
Appreciate the comments and support.
Regards TBBear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
Use +Merv 10 air filter. -Don't forget the "Golden Rule"