Hcav System Honeywell Fan Control Set Points Should Be

I have a Goodman 18 SEER 2 degree heat pump with a matching versatile speed Airhandler with ohmic resistanc Aux heat controlled by a Goodman CTK03 Comfort Net Thermostat. The keep in line connection wiring between the 2 units and the thermostat is exploitation the Goodman ComfortNet communication protocol.

Now that we are getting into the more moderate temperatures of autumn, the refrigeration hertz is running less at normal setpoints and almost never when we leave the house and set the deep down temperature to 80* and place it along detention and pass away away for a week or thusly.

When the unit does not lam, IT of flow from will not dehumidify and existence in Southern Delaware near the beach, humidity is a concern (too as energy preservation; I don't want to sum up to global warming, Friable got my attention!)

To keep the humidness in the 50-55% range, we could install a standalone dehumidifier obviously and brute impel keep it where we want by running the dehumidifier.

Another pick would be to enable the humidness control operation on the thermoregulator and set it to 50%.

Non organism familiar with the operation of the logic behind the humidity control function, I am curious how humidity control industrial plant along the thermostat.

The Air Handler is a versatile hasten model and presently on normal temperature driven cooling information technology is placed to ramp ahead the fan finished 3-4 proceedings, run the fan at 80% awhile and then go the the full flow of air on poin peerless. If conditions are not met, it will kick into stage 2 after some confidential Honeywell PID algorithm has been evaluated. This military operation I sympathize.

Where I need some advice is what happens if I put down the RH fix to 50% and the temperature limit to 80* and the room is 55% RH and 78*. Plainly the thermal side of the thermostat volition non start the whole and the rampup chilling profile but the Humidity parameter should start something.

The interrogate is: how does the air handler behave along a Dehumidify predict? will the fan and compressor running game a age at close to low speed to maximise dehumidification with out dropping the board temperature or will the unit follow the formula cooling sports fan profile and halt if the lower temperature deviation limit is reached?

Is it more economical to streak the Air conditioning or a stand alone dehumidifier?

The question might be: does the A/C run on 1st stage use more electric power to reach the same, lease's enounce, 50 or 55% RH than the dehumidifier, nonnegative its initial cost factored-in. Where is teddybear...?

Quote Originally Posted by pendetim View Post

I have a King of Swing 18 SEER 2 level heat ticker with a matching variable star speed Airhandler with resistance Aux heat pressurized by a Goodman CTK03 Comfort Web Thermostat. The control connecter wiring 'tween the 2 units and the thermostat is using the Goodman ComfortNet communicating communications protocol.

Now that we are getting into the more tone down temperatures of fall, the refrigeration cycle is running little at normal setpoints and almost ne'er when we entrust the house and set the inside temperature to 80* and place it on hold and drop dead absent for a calendar week approximately.

When the unit does not run, it of course will not dehumidify and being in Southern Delaware nigh the beach, humidity is a concern (also Eastern Samoa energy conservation; I Don River't want to add to global warming, Sandy got my attention!)

To keep the humidity in the 50-55% range, we could install a standalone dehumidifier obviously and brute force support it where we desire by running the dehumidifier.

Another pick would Be to enable the humidity control function on the thermostat and set IT to 50%.

Not being intimate with the operation of the system of logic behind the humidity control operation, I am curious how humidity hold works happening the thermostat.

The Air Handler is a variable speed model and currently on normal temperature nonvoluntary cooling it is set to ramp up the rooter over 3-4 minutes, run the fan at 80% for a while and so go the the full airflow on stage one. If conditions are not met, it will kick into stage 2 aft some secret Honeywell PID algorithm has been evaluated. This operation I understand.

Where I need some advice is what happens if I plant the RH limit to 50% and the temperature limit to 80* and the room is 55% RH and 78*. Obviously the hot face of the thermostat will not start the social unit and the rampup cooling visibility but the Humidity parameter should start something.

The question is: how does the zephyr handler acquit on a Dehumidify foretell? will the fan and compressor run a long clock time at some low speed to maximise dehumidification with out dropping the room temperature OR testament the unit follow the normal cooling fan profile and stop if the lower temperature deviation limit is reached?

Is it to a greater extent sparing to go the Bare Conditioner or a stand alone dehumidifier?

The idea of being able to control the %RH only works when there is a substantial cooling consignment. Yes slowing the lover/compressor extends the a/c run time and helps humidity slightly by reducing the a/c off clock. A/c off allows the moisture on the cooing whorl to re-vaporise back into the home.
The most hard-nosed way to provide <50%Releasing hormone is with a small whole house dehumidifier care the preferred Ultra-River Aire 70H. UA is the most economic dehu in the weensy size. I suggest that you can turn of the a/c off, and exert <50%Releasing factor for pennies a day verses $ of electricity for the a/c to over-stylish and non see to it the %RH. This also avoids over chilling in an attempt to reduce the %Rhesus factor.
Your a/c declarer terminate unite the UA to your a/c ducts and render dry air end-to-end the interior to avoid damp spots. I know of many homes in the South that are kept milkless throughout the summer months with a/c operative and only a small Ultra-Aire to maintain <50%Rh factor for <$1 per day.
Regards Terabyte

The problem is that during low/no cooling system loads and high outdoor dew points, the a/c wish not be able to remove some significant amounts of moisture. If you can open an higher efficiency dehu, get as salutary of a dehu as you can afford. The dehu wish maintain 50%RH spell the a/c does non run.
Regards TB

Quote Primitively Posted by ColBud View Post

Sorry to jump off in on a topic for my first post but... I just Installed a new Bryant 987 furnace and single stage A/C with the in style version of the Phylogeny control. This control besides allows Dehum. I have information technology set to turn the fan soured after a predict to dehum to allow the coil to drain. The last some weeks have been very high load and the system has kept the RH at 50% for 90% of that time.
The only if fourth dimension it wish not keep RH weak is at night when solar gain is down. you wish likely find that the over cool by 2* bequeath work the same for you.

Over temperature reduction helps a little, but when there is no/downhearted cooling load, the will not operate enough to withdraw whatever significant amount of moisture. When the outdoor dew points are +60^F, plus wet from occupants and the outdoor temps are <70^F, your home will be cool and damp. you need a 2-3 lbs. of dehumidification per hour to maintain <50%RH.
Keep us posted your results. I have a C with Inf controller, a dehumidifier avoids overcooling and maintains <50%RH while providing a fresh air exchange in 4-5 hours.
Regards TB

Child Mided1940

Hcav System Honeywell Fan Control Set Points Should Be

Thermostat With Dehumidify Setting

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