What to expect during your installation
Step-by-step installation summery:
- A 3 to 4 foot square condenser pad will be set outside next to an exterior wall. The location will be relatively close to the space inside where the air handler will be positioned. The condenser unit will sit on the condenser pad.
- The air handler* or furnace** will be installed inside the home. An existing closet with access to the attic will work if one is available. Likewise, a basement or attic space of adequate size will house the air handler or furnace and ducting. *Air handler with built in coil **furnace with indoor coil installed
- Electrical service with safety device will be installed to the outside condenser unit from the home electrical panel. The amount of service required will be determined by the size of the condenser unit. Typically, the size electrical service needed to power the outside unit is 230 volts at 30 to 40 amps.
- Electrical service with safety device will be installed to the inside unit to power the air handler or furnace. Size the electrical service to the air handler according to the manufacturer’s recommendation based on the size of the unit. Usually a 230-volt service between 20 and 40 amps for each application is used.
- Copper refrigerant lines will be installed from the inside unit to the outside condenser unit. An aluminum protective line set cover will be installed on the exterior wall to shield lines. A large diameter and a small diameter copper lines will be run in parallel between the two units. The large line is for low-pressure return refrigerant that travels back to the outside unit to be recompressed. The small diameter line is for high-pressure liquid refrigerant that runs from the outside compressor to the inside air handler where it evaporates and absorbs heat out of the surrounding air.
- Test the low and high pressure lines into the condenser unit outside, and into the unit inside. Each line will only fit into one of two copper fittings on each of the two units. A licensed GC heating and Cooling technician is required to test the lines for leaks, and service the unit with refrigerant.
- Install a plenum onto the discharge end of the air handler. The plenum is an insulated box from which the ductwork will connect. From here, the ductwork will be routed to each room to be cooled.
- Cut a small opening into each room’s ceiling or floor to install the air conditioner vents. The vents are commonly referred to as registers, and direct the flow of conditioned air into the room. Each size vent will determine the size of the hole needed for its installation.
- Connect a section of ductwork to each register, and route the other end to the plenum. Attach this end of the ductwork to the plenum with a duct-to-plenum bracket, and clamp. Wrap the connections in duct tape to help prevent air leaks.
- For attic installation -Install and route a 1/2-inch PVC line with safety device from the coil to the exterior gravel pit to drain off any collected moisture. Install a secondary pan under the air handler or furnace to catch any condensate that may leak from the unit. Install and route a 1/2-inch PVC line from the pan to the outside to drain off any collected moisture. For closet installation – Install and route a 1/2-inch PVC line with safety device from the coil to the exterior gravel pit to drain off any collected moisture.