Honeywell Vision Pro 8000 TH8320U1008 Thermostat Question - DIY Chatroom

chetwynd · 02-01-2009, 12:43 PM

I recently purchased a Goodman 115,000 BTU 95% Efficiency, Two Stage Burner, Variable Speed Blower, Upflow/Horizontal Application Gas Furnace and installed a Honeywell Vision Pro 8000 TH8320U1008 thermostat.

I think it can be argued that I oversized the furnace, but I have about a 2500 square foot house with high exposed ceilings, lots of skylights, and a whole wall of windows...some of which are single pane.

That aside, my first issue is that I don't really like the Adaptive Intelligence Recovery or whatever it is that turns the heater on prior to when you set it so that it reaches the temperature at the set time, but I think I can turn that off right?

The other setting that I'm hoping someone on this forum can tell me about is how to adjust the thermostat so that it doesn't so strictly try to maintain the temperature.

For example this morning in my house it was probably low 60s...maybe 61. I have the thermostat set for 67 at 8am and to hold that temp all day. The furnace came on well before 8am on high and blasted for a while and brought it up to temp...took maybe 20 minutes or something. Then every 15 minutes or so since it's come on at the low level to maintain the temperature I guess. I could swear that when it did this yesterday (just installed it yesterday) the inside temp was 67 and it was still turning on.

So I guess my question is, is there a setting that will allow me to specify the number of degrees of buffer between the inside temp and when the heater comes on? Meaning, if I have the thermostat set for 67, I don't want it to come on every time it dips slightly below 67, I wouldn't mind it dropping to 65 or so.

Any ideas?

Thanks guys!

beenthere · 02-01-2009, 01:47 PM

No.
he 8320 doesn't have a droop adjustment.
You can how ever, adjust the CPH, if its at 3, set it to 2 and see how you like it.

And yes, you can turn off the adaptive recovery.

Since it was just installed yesterday. You should wait a few ore days before changing thing.
It does take a few days for it to learn the house.

bmik2729 · 02-01-2009, 10:43 PM

I recently replaced my Honeywell thermostat for the same thing. Honeywell thermostats will try to maintain the temp to within 1 degree and it is not adjustable. My furnace was turning on all the time. I replaced it with a thermostat with an adjustable "swing" setting. Much better now.