Thermostat Wiring Problem

[gulfstream]

I'm installing a new thermostat and have a wiring question. This is for a heat pump. Old thermostat is a Janitrol with 8 wires, new one a Robertshaw programmable (8625). The instructions are fairly straight forward but there is one wire in question. A blue wire on the old thermostat is labeled E. All the other wires are accounted for except B, which is for the reversing valve (heat). The instructions are calling for this to be labeled B which there isn't on the old one. Here's how they're laid out:

Old Thermostat
R= Red Wire
Y= Yellow Wire
O= Orange Wire
E=Blue Wire
G= Green Wire
W2= White & Brown Wire
C= Black Wire

New Thermostat
R= Red (24VAC Return)
Y1= Yellow (Compressor Relay)
O= Orange (Reversing Valve, Cool Active)
B=??? (Reversing valve, Heat Active)
G= Green (Fan Relay)
W2/E= White & brown (2nd Stage Heat Control or Emerg. Heat)
C= Black (24VAC Common Side)

Should the blue wire that's on the old "E" terminal go to the new "B" terminal which is the reversing valve heat active? Also, what's the new "L" terminal for system monitor used for? Thanks for any help you can offer!

[wormy]

B terminal on new stat does not get hooked up

Without seeing the wiring diagram in the unit and seeing how it is physically wired in, I can't do much from here.

Safest: Cap off the extra blue wire that was hooked to E on old stat.

I'd have to have the stat paperwork in front of me for the new terminal. Don't hook anything to it, you already have all your wires/terminals accounted for.

[gulfstream]

Thanks, nothing then should go to the new stat "B" terminal? Here's a link to the new stats wiring diagram

http://www.icca.invensys.com/manuals...-1101_8625.pdf

[wormy]

I'm sorry but that is one ugly stat.
I'm not too fond of Robertshaw anyways.... but jeeze...
thats just plain ugly.

Do not connect anything to B terminal.

[jmunoz98]

Some heat pump reversing valves are energized in cooling and some in heating it depends on the manufacturer. Thats why you have optional terminals on T-Stat.

[gulfstream]

Thanks guys, I'll finish the job now. So my stat is ugly? Can't say I've ever seen a stat that made me stand back and say..."wow, what a thing of beauty". They're all just stats, nothing to get excited about. Thanks for the help.

[aircooled53]

B= emergency heat old stat


New Stat/

o=reversing valve/heat pump
w2=second stage or emergency heat

Don't mind the jokes just wire-it say thank you and go on to the nexted one..

Have a great day...<<<<<<<Aircooled>>>>>>>>>

[beenthere]

You should check out the honeywell visionpro 8000 series, it might make you say WOW!

[mayguy]

lol Yeah, I agree. I pulled it up, and wow! Ugly! sorry.. Guess I am spoiled with my VisionPro.

[gulfstream]

Ok, everyone thinks it's ugly...should have seen the old Janitrol HPT18-60 it replaced...FUGLY!!!

[tpa-fl]

If you've never seen a stat as something elegant, then you've definitely never seen a VisionPro 8000. Most of my friends have noticed it without me even talking about it, and most of them are wanting one to replace whatever they're using.

[AllTemp]

Originally posted by tpa-fl
If you've never seen a stat as something elegant, then you've definitely never seen a VisionPro 8000. Most of my friends have noticed it without me even talking about it, and most of them are wanting one to replace whatever they're using.

Read the life expectancy of the Vision Pro seems to be some what short due to it's size... I certainly hope not sure would be the pitts to sell a few hundred of these and in a couple of years have your customers sceamming you've been screwed...

Probably just planned obsolesence by Honeywell anyway!

[Jultzya]

[QUOTE]Originally posted by AllTemp

Read the life expectancy of the Vision Pro seems to be some what short due to it's size... I certainly hope not sure would be the pitts to sell a few hundred of these and in a couple of years have your customers sceamming you've been screwed...

Honeywell will be eating a bunch of them if its true.

As ALL the VisionPro's have a 5 year warranty!