Replacing weathertron with hunter 44860 - http://www.hvacmechanic.com/ Forums

Original message

bob76535

67.209.2.16

"Replacing weathertron with hunter 44860" , posted Sun 14 Sep 18:14

I have a conventional electric heat/central AC system. The old weathertron thermostat was acting wacky so I bought a Hunter 44860 digital programmable unit. I set it for conventional electric heat mode and manual operation.

The old thermostat had the following connections:

Orange wire = O
Green = G
Yellow = Y
Black = T
White = W
Red = R
Brown = X2
Blue = B

I have been reading here about what goes where with this thermostat and I see a bunch of different answers. The wiring diagram from hunter that I see posted a lot here says:

Orange wire = Not sure but looks like RH
Green = G
Yellow = Y1
Black = W2
White = W1
Red = R/Rc
Brown = Y2
Blue = C

But I see other posts that say this:

Rh& Rc = red
C = blue
Y1 = yellow
W2 = white
E = black
O = orange
G = green
Tape off brown. Your new stat will not use the obsolete thermister for heating control since it uses a processor.

Do not use the new B terminal. Tranes B is common. Hunter's C is common.

Or I see this:

O = orange
G = green
Y1 = yellow
E = black
W2 = white
Rc & R = red
C = would be blue if it was connected
Tape off the brown wire.

Which one of these is correct?

Thanks

Bob

Replies:

Houston204

69.151.144.90

"Re(1):Replacing weathertron with hunter 44860" , posted Sun 14 Sep 21:18

O = orange
G = green
Y1 = yellow
Aux = white
Rc & Rh = red
E = brown
C = blue
Tape off black. Your new stat does not use an outdoor thermister.

Configure for multi stage heatpump as described on pages 28 and 29.

I'd post pictures, but I have no power. I'm at Wendys to post with my ipaq.

Hunker Down.

"Tip of the Day" Remember to remove power first.

learner

70.73.177.71

"Re(2):Replacing weathertron with hunter 44860" , posted Sun 14 Sep 23:12

Hi, Houston
Hope you and yours are OK after Ike.
Here we're just enjoying nice fall weather.

bob76535

67.209.2.16

"Re(2):Replacing weathertron with hunter 44860" , posted Sun 14 Sep 22:20

Ok I did that. It gives me A/C but heat is just fan (no warm air) but only in conventional mode.

Your list says white goes in Aux. I don't have a slot that is named aux but the instructions said W2 was for aux heat so I put it there. Is that correct?

Also, I have a conventional HVAC system, not a heatpump. I configured the system as you described (multi stage heatpump) but it does not work at all that way so I put it back to conventional so I could have A/C.

Any idea what I have wrong?

Hope all is well down there. I bet you are gonna be busy when things get back to normal.

Thanks for the help. Look forward to your response.

Bob

Houston204

69.151.144.90

"Re(3):Replacing weathertron with hunter 44860" , posted Tue 16 Sep 21:36

The Weathertron stats are from their heatpump series. The O terminal is used to energize the reversing valve in heatpumps for cool mode.

That stat will energize Y (compressor) on demand for heat and cool. I'm very confident that you have a heatpump.

Most digital stats will lockout the system for 5 minutes after power is restored. Did you wait that long?

I've got power now but no cable or internet.

The shop still doesn't have power. Picked up a generator today for the shop and got the phones working. Hope to work tomorrow.

"Tip of the Day" Remember to remove power first.

bob76535

67.209.8.172

"Re(4):Replacing weathertron with hunter 44860" , posted Wed 17 Sep 22:18

How would I tell if it is a heatpump? I live in an apartment building and the unit is in a closet. The ductwork runs above the ceiling and the only thing that comes in from the box outside is a 1/2" copper pipe, a 1/4" copper pipe, and the wire that goes to the tstat. The box outside is small square unit with what looks like a compressor in the middle under the fan. I can't get to the outside box to get a model number but the indoor unit is a trane bwv718a100l2.

Does that tell you anything?

Thanks for helping me. I appreciate your time. Hope all is well at home.

Bob

Houston204

98.196.66.53

"Re(5):Replacing weathertron with hunter 44860" , posted Thu 18 Sep 21:52

Does the outdoor unit run with heat demand?

"Tip of the Day" Remember to remove power first.