HELP: Thermostat Wiring for Air Handler and Heat Pump

[dohcser]

First let me tell you what equipment I have:

Air Handler: Lennox CB18-26-2P (Electric)
Heat Pump: Lennox 10HPB
New Thermostat: Feature Comfort LP160

On top of the air handler there is what I would call a distribution board in which the HP and Thermostat is wired to.

On the LP160 Thermostat it is labled as:
R - Switched Side, 24 VAC
O - Reversing Valve (Cool)
B - Reversing Valve (Heat)
G - Fan
W - Heater Output
Y - Cooler Output
C - Unswitched Side, 24 VAC

Current Wiring:

Thermostat ------------Air Handler--------------Heat Pump
......................................3------------------------C (Green)
G--------------------------G
W-------------------------W1----------------------W1 (Yellow)
R--------------------------R------------------------R (Black)
O---------------------------------------------------O (Red direct to HP)
Y---------------------------------------------------Y1 (White direct to HP)

Here is what is going on and tell me if this is how it is supposed to work:
1. On the Thermostat instructions it saids for Heat Pump usage I need to jumper Y & W together.
a. If I do this then where would I run the now single wire to?
b. I would be loosing either Y1 or W1 from my current configuration.

2. On the Thermostat instructions it saids for Heat Pump you should either use O or B never both, I chose to run it to O because the HP said O, but this is for the Reversing Valve, when would I know if to use O or B. On the Thermostat O = Cool and B = Heat.

3. Would anyone know what 3 is on the Air Handler? Is this is same as C? When I took the panel off on the Air handler I saw two wires, on going to the power supply and the other to a heating element.

4. I turned on the Thermostat on COOL and the HP kicked on and the AC kicked in as expected.

5. However when I put the temp up to 90 degrees the HP turned off and the Air Handler kicked in.
a. I thought that a Heat Pump would kick on when the temp was above 30 or 35 degrees. I was about 50 degrees when I did this.

All I need to know is if I wired it up properly and if not can you guide me. I did not touch any of the existing wiring from Air Handler to HP, i just tried matching up to thermostat.

[ckr74]

Probably not going to get much help. Read site rules. Call a pro.

Sure seems like we're getting alot of these lately. Or is it just me??????????????

[ascj]

First let me tell you what equipment I have:

Air Handler: Lennox CB18-26-2P (Electric)
Heat Pump: Lennox 10HPB
New Thermostat: Feature Comfort LP160

On top of the air handler there is what I would call a distribution board in which the HP and Thermostat is wired to.

On the LP160 Thermostat it is labled as:
R - Switched Side, 24 VAC
O - Reversing Valve (Cool)
B - Reversing Valve (Heat)
G - Fan
W - Heater Output
Y - Cooler Output
C - Unswitched Side, 24 VAC

Current Wiring:

Thermostat Air Handler Heat Pump
3 ------------------ C (Green)
G ------------------- G
W ------------------- W1 ------------------ W1 (Yellow)
R ------------------- R ------------------ R (Black)
O -------------------------------------------- O (Red direct to HP)
Y -------------------------------------------- Y1 (White direct to HP)

Here is what is going on and tell me if this is how it is supposed to work:
1. On the Thermostat instructions it saids for Heat Pump usage I need to jumper Y & W together.
a. If I do this then where would I run the now single wire to?
b. I would be loosing either Y1 or W1 from my current configuration.

2. On the Thermostat instructions it saids for Heat Pump you should either use O or B never both, I chose to run it to O because the HP said O, but this is for the Reversing Valve, when would I know if to use O or B. On the Thermostat O = Cool and B = Heat.

3. Would anyone know what 3 is on the Air Handler? Is this is same as C? When I took the panel off on the Air handler I saw two wires, on going to the power supply and the other to a heating element.

4. I turned on the Thermostat on COOL and the HP kicked on and the AC kicked in as expected.

5. However when I put the temp up to 90 degrees the HP turned off and the Air Handler kicked in.
a. I thought that a Heat Pump would kick on when the temp was above 30 or 35 degrees. I was about 50 degrees when I did this.

All I need to know is if I wired it up properly and if not can you guide me. I did not touch any of the existing wiring from Air Handler to HP, i just tried matching up to thermostat.

Looks like you have the wrong type of thermostat. My suggestion to you is have a contractor install the right thermostat. I will be much more reliable then the ones you buy at any home improvement store.

[mike robinson]

If you are not 100% sure you know what you are doing I would call a pro because not only do you run a risk in destroying a lot of high dollar controls you will be putting in so major overtime before you figure this one out.

[bmathews]

Do something different than a lot of people don't do. Pay on the front end and save on the back end. Paying somebody to come out and install a thermostat is going to be cheaper than paying them money to install a new control board and/or transformer when you pop them and the "I told you so" treatment you will get from your wife or husband after you get through writing them that check.

[BaldLoonie]

Sorry, DIY subjects are not allowed here. Probably better off calling your dealer before you fry something. You'd be surprised by the number of service calls we get that are caused by homeowner and thermostat wiring.