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-   -   Honeywell Focus PRO6000 (http://www.diychatroom.com/f17/honeywell-focus-pro6000-118821/)

namasil 09-30-2011 09:49 PM

Honeywell Focus PRO6000
 
I am installing a programmable thermostat, TH6220D1002. I would like to make sure I am connecting the wires to the correct terminals. The old thermostat (manual) is on the left, the new on the right.
MANUAL ............ TH6220D1002
R ........................ R & RC
O ........................ O/B
C ......................... C
Y1 ....................... y
E/W1 .................... E
G ......................... G
W2 ...................... ???
??? ..................... AUX

The new terminals are obvious for the most part. I am concerned about terminal E/W1 and terminal W2. These terminals are tied together on the old thermostat.

Do I tie together terminal E and terminal AUX on the new thermostat? OR do I leave AUX empty?

hvactech126 09-30-2011 10:02 PM

add a jumper to tie them together on the new stat as well. and jumper Aux to E

Master of Cold 10-01-2011 05:50 AM

Actually on that stat the e and aux terminals are energized in emergence heat. No jumper is needed.
In the olden days, the heat pump had an outdoor temp sensor that would lock out the heat strips above a certain temperature. The E feature of the stat was used to bypass the sensor. Modern systems don't use that sensor anymore.

hvactech126 10-01-2011 06:49 AM

"Install field jumper between Aux and E if there is no emergency heat relay." Page 4 of the installation manual. If you dont do this then when the unit calls for aux heat the system most likely wont keep up and then you would have to manually put it on emergency heat.

beenthere 10-01-2011 07:42 AM

Look at your new thermostat. There are 2 sets of terminal designations. W2 and Aux are the same terminal. Put the old W2 to the new stats W2. And jumper it to E.

Master of Cold 10-01-2011 08:31 AM

1 Attachment(s)
What I was saying, is that when you put the stat in em heat, the aux and e terminals are engaged. Here is a pic of my 3h/2c stat. I don't have the ability to seperate the two.

Master of Cold 10-01-2011 11:03 AM

After thinking about this for a minute, the 3 and 4 thousand series requires a jumper, 5,6,7, and 8 thousand don't.

beenthere 10-02-2011 05:09 AM

Quote:

Originally Posted by Master of Cold (Post 739514)
After thinking about this for a minute, the 3 and 4 thousand series requires a jumper, 5,6,7, and 8 thousand don't.

The TH6220 needs jumper, the TH6320 doesn't.


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