My AC unit has three wires, green, white red. Coming off the house and off the unit. How do I wire them!!
Hi, if you are talking about the wires,high voltage wires coming from the breaker box, and the same coming from the outdoor unit which are also high voltage wires, you have to set a disconnect box and mount it with in 3 to 5 feet from the outdoor unit. I am assuming you had no prior a/c unit there? If not, the 3 at the house must be ran out of your main breaker box through a breaker, double pole. It needs to match the rating of the voltage on the data plate on your unit, lets say, 30 amps. From your breaker box it needs to be ran through water tight conduit over to the box you will be adding there. Even though you have a green for ground, white and red, the white should be 120 volts and the red the same to have 220 volts. They will wire in this box to the line side. The directions in the new box will tell you line/power in and load/power out to new unit. This box you will need to buy is either a 30 amp or 60 amp disconnect. From the new unit, you will need to buy enough wire of the same size, and a piece of 3/4" seal tight flex conduit and 2- 3/4" connectors. Pull the 3 pieces of new wire through the flex conduit and connect to the 3 wires there. The green is ground so just connect it to a ground or the case. The other end will go through a knock out plug into the box and will connect to the load side. There will be a lug for the green ground. Coming from the house at the breaker box is where these 3 wires should be, and coming out of the breaker, you can use the 3/4" seal-tight to pull enough wire from there to the new box. This is what feeds your outdoor unit. This is just for the outdoor unit. The indoor unit runs on its own power source. There has to be a box mounted there also and wires pulled from the main breaker box to the indoor box. Hopefully who ever installed the unit has done all of this. If you have all of the boxes already there, just hook color to color. If you have never had a split system a/c unit at your home before and you are doing this yourself, there is a lot of high voltage wiring that has to be put in to run both the indoor and outdoor. Get back to me a let me know what you have to work with and if you have ever had a system like this before, and if you set the unit and installed the duct work.
PS If the indoor unit is gas fired, the high voltage will be 120 volts. If its a heat pump, it will be 220 volts.
May 25, 2010 |
Goodman CLQ36AR49 Air Conditioner