Chronotherm III Calibration?
E Jones
the room temperature as higher than it really is, by about 4 or 5 degrees.
This opinion comes from comparing it to other freestanding thermometers that
I place in the same room near the Honeywell. Right now the Chronotherm shows
71 degrees while another electronic thermometer nearby reads 67. The room
seems chilly, so I am inclined to believe the lower reading is the more
accurate one.
Honeywell's troubleshooting wizard on their web site covers this issue, but
all their solutions point to other problems or causes, in essence saying
that their thermostat CAN'T be the problem.
Does anyone know if the Chronotherm can be calibrated?
Thanks.
- Earl
remove both x's from my email address to respond via email
Travis Jordan
There are no bias adjustments for temperature on the Chronotherm III.
http://hbctechlit.honeywell.com/techlit/PDF/69-0000s/69-0348.pdf
Probably time for a new (batteryless) thermostat anyway - I'd suggest the
VisionPro
http://www.hotfreshcool.com/vp_demo.html
NewGuy
leaks in vents that makes furnace room much warmer, and if heat can travel
where thermostat wires are, it can affect thermostat temperature readings.
Could you try to insulate hole behind the thermostat and see if this helps.
Regards,
"E Jones" <earl_...@usax.net> wrote in message
news:QS5ld.145055$5v2.1...@fe2.columbus.rr.com...
E Jones
the thermostat on the wall read HIGHER than one on a nearby shelf? The wall
the thermostat is on is in the middle of the house. (The other side of the
same wall is another room.) Little chance for a draft or creeping heat from
within the wall being the cause of the discrepancy.
Also, the thermostat is not mounted above the furnace room, nor on the same
wall with any heat vents or air return vents.
- Earl
"NewGuy" <New...@RemoveSpam.com> wrote in message
news:w87ld.50662$km5.2...@news20.bellglobal.com...
Zypher
program [Adaptive Intelligent Recovery® control brings the room temperature
to temperature setpoint at the programmed time, maximizing comfort and
energy savings.] "anticipate" the need for cooling or heating (as the case
maybe.) Sometimes the thermostat will show a different setting &
temperature because it is compensating using the programming set up by
Honeywell. You can defeat the logritmitc program. Call your local HVAC
technician to change the Adaptive Control Setting or turn it "off."
This feature came out around 1980 with the first T8600 series and was meant
to bring the heating on earlier than the program was set for so, AT the time
the thermostat was told to be a certain temperature, it would be, not that
it 'came on' at that time. (Mostly an advantage for heat pump use.)
--
Zyp
"NewGuy" <New...@RemoveSpam.com> wrote in message
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p...@see_my_sig_for_address.com
And what does it have to do with what the CURRENT READING is ?
On Fri, 12 Nov 2004 19:30:09 GMT, "Zypher" <no-...@yahoo.com> wrote:
>The Honeywell Chronotherm III electronic thermostat uses a logritmitc
>program [Adaptive Intelligent Recovery® control brings the room temperature
>to temperature setpoint at the programmed time, maximizing comfort and
>energy savings.] "anticipate" the need for cooling or heating (as the case
>maybe.) Sometimes the thermostat will show a different setting &
>temperature because it is compensating using the programming set up by
>Honeywell. You can defeat the logritmitc program. Call your local HVAC
>technician to change the Adaptive Control Setting or turn it "off."
>
>This feature came out around 1980 with the first T8600 series and was meant
>to bring the heating on earlier than the program was set for so, AT the time
>the thermostat was told to be a certain temperature, it would be, not that
>it 'came on' at that time. (Mostly an advantage for heat pump use.)
Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
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Free demo now available online http://pmilligan.net/palm/
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Bertie the Bunyip
onnews:ho3ap0h94u2gnupl0...@4ax.com:
> WTF is 'logritmitc '
ooww, typ lames.
A heavyweight.
Bertie
Bertie the Bunyip
onnews:10pb2ct...@corp.supernews.com:
>
> "Zypher" <no-...@yahoo.com> wrote in message
> news:0z8ld.24946$KJ6....@newsread1.news.pas.earthlink.net...
>> 1st off I'm sorry for cross posting to other groups. I just noticed
>> it.
>
> Thanks...
Welcome
>
>>
>> The other I misspelled. Should have been [logarithmic] which is a
>> term
> used
>> for programming on a 'sliding' scale. I leaned about it by in the
>> 1980's when this very issue came up with the Honeywell T8600
>> Chronotherm I's.
>>
>> Now Honeywell calls is "Adaptive Recovery" :)
>>
>> --
>> Zyp
>> "Bertie the Bunyip" <XZXZ@XZXZ.,XZXZX> wrote in message
>> news:Xns959FC81E31F8AZZ...@216.128.74.13...
jMon
readings were about 2-3 degrees apart. However, it turned out the
difference was attributed to the location of the other thermometer.
When I place it directly on the wall next to the thermostat and let it
sit there for a few hours, guess what? The two agreed on the
temperature. Previously, I had them placed close near one another but
apparently, "close" was not close enough.
Jay M
Hillsboro, VA
USA
"E Jones" <earl_...@usax.net> wrote in message news:<QS5ld.145055$5v2.1...@fe2.columbus.rr.com>...
statesideqsod
Yes I agree. After many hours of placing my Taylor thermometer on top of the
thermostat the 2 readings got pretty close. I would say less than a degree
difference. Also make sure the Chronotherm has fresh batteries. Change them at
least twice year.
--
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