making sure of t-stat connections. - http://www.hvacmechanic.com/ Forums
Original message
| sham
 |  "making sure of t-stat connections."
, posted Mon 7 Jun 15:54  
making sure I have the last connections correct.
I am assuming that if since I am connection my W from the Baystat 239 to W3 on the Honeywell T8611M2006 Chronotherm IV, that I have just a single stage compressor system when I configure the installer setup? The heat pump is a Trane TWN024-060C XE1100.
I am going with these connections:
(1st Baystat 239 - 2nd Honeywell T8611)
B to C
*X2 -no connection
*OT -no connection
*OT -no connection
*L -no connection
R to R
W to W3
X2 to E
*Y2 -no connection
Y to Y1
O to O/B
G to G
*T -no connection
please let me know if these are correct and I will procede
Thank you very much
sham
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Replies:
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| cesarin78801
| "Re(1):making sure of t-stat connections." , posted Tue 8 Jun 20:41
t-stat t-86 twn air handler x11 out door unit
R------------RED-----------R-----------RED-------------R
W2----------WHITE----------W1-2-3
X2----------BLACK----------X2-BLACK X2-----------------X2
G-----------GREEN----------G
Y1----------YELLOW---------Y1------YELLOW--------------Y
C-----------BLUE-----------B--------BLUE---------------B
O-----------ORANGE---------O---------ORANGE------------O
JUMP W2 TO E AT THE T- STAT
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| xenos
Webmaster 
| "Re(1):making sure of t-stat connections." , posted Tue 8 Jun 20:20
Looks fine.
Xenos.
The best way to escape a problem is to solve it.
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| | sham
| "Re(2):making sure of t-stat connections." , posted Tue 8 Jun 22:20
Now Im really confused.
I got a reply from a cesarin 78801 telling me a few different things than xenos. I dont have a W2- only a W3 on the Honeywell. I was told by you to connect the X2 to E, not black although on the old thermostat the black wire was connected to the X2 and I know we are only talking connections not wires. Is he saying black as in wire or black as in "B" connection? He also told me to use Orange to O...but I only have O/B on the Honeywell new thermostat.
Then he told me to jump W2 to E at the thermostat ??
Which is right?
Next problem.
#1 On the installer setup, I have a few questions.
Under the selection "heating cycle" the factory set up is for 'auxiliary heat' is for 6 cph used on lst stage of heat pump systems. The choices are also 3 cph, or 9 cph-used for electric heat. Do I stay with the factory setting ?
Also, the next setting is for 'emergency heat' with the factory setting at 9 cph with the same choices, but I think I stick with the 9 on this one ??
#2 On the "system setting adjustment" the factory setting is for 'manual changeover' the choices are 'auto changeover' or 'fixed auto changeover'. I would like it to change from heating to cooling by itself when the time comes..is that what this is...and what do I choose either way ?
#3 "adaptive Intelligent Recovery Control" factory setting is that the adaptive system is activated (system starts early so setpoint is reached by start of program period) the other choice is 'Conventional recovery (system starts recovery at programed time) Which do I choose?
#4 "O/B terminal energized in heating or cooling" Factory setting is 'o/b terminal is energized for reversing valve in cooling' the other choice is 'o/b terminal is energized for reversing balve in heating' which is my choice ?
I think Im ok with the rest. Again, please let me know about the connections for sure, and I would love some help on the 4 questions above.
Thank you once again.
sham
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| | sham
| "Re(3):making sure of t-stat connections." , posted Tue 8 Jun 23:22
Thank you so much for your answer tonight.
I still am not sure about my question #4. You told me that my system uses "0" for changeover.
The Selection was for " O/B terminalenergized in heating or cooling." The factory was 'O/B terminal in energized for reversing valve in -cooling.' The option I can choose is 'O/B terminal is energized for reversing valve in -heating'
I dont understand your answer for this one. Please explain to the amateur.
thank you so much for your other answers, you are making this possible for me to do.
sham
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| | xenos
Webmaster
| "Re(3):making sure of t-stat connections." , posted Tue 8 Jun 22:48
#1 Since Aux heat is electric stick with the factory.
#2 Select Auto chang over
#3 – Experiment with this one. I uses adaptive that way I don’t have to guess when to start the heat, I just know it will be at set point when my alarm goes off .
#4 " Your system uses O for changover.
Xenos.
The best way to escape a problem is to solve it.
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| | xenos
Webmaster
| "Re(3):making sure of t-stat connections." , posted Tue 8 Jun 22:43
It's OK I have made the same mistake my self, with that thermostat, Nrmaly it is W2 however in your cse it's W3 and X2 is E.
Xenos.
The best way to escape a problem is to solve it.
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| | sham
| "Re(4):making sure of t-stat connections." , posted Wed 9 Jun 00:08
Thank you so much for your answer tonight.
I still am not sure about my question #4. You told me that my system uses "0" for changeover.
The Selection was for " O/B terminal energized in heating or cooling." The factory setting was 'O/B terminal in energized for reversing valve in -cooling.' The option I can choose is 'O/B terminal is energized for reversing valve in -heating'
I dont understand your answer for this one. Please explain to the amateur.
thank you so much for your other answers, you are making this possible for me to do.
sham
sham
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| | xenos
Webmaster
| "Re(5):making sure of t-stat connections." , posted Wed 9 Jun 07:49
Not all heat pumps are the same, some use cooling change over, signifies by terminal O while others use heating change over signified by terminal B. Since it’s an either or, thing Honeywell is saving money by making the terminal O/B and allowing you to chouse weather you want it to be an O terminal or a B terminal.
Xenos.
The best way to escape a problem is to solve it.
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| cesarin78801
| "Re(1):making sure of t-stat connections." , posted Tue 8 Jun 20:17
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