There are many brands and size options of split zone heat pump/ air conditioners. We recommend that you call Oberholtzer HVAC supply at 717-363-3499 for help finding a split zone heat pump that fits your desires and budget.
The first step in installing the unit is to find the template that is included with each kit and find an appropriate location on the wall. Although we have already installed a unit above windows in a sun porch, you might find it simpler to locate the indoor unit on a section of wall without any headers or wiring to block the passage of the line set through the wall.
Additionally, it is better to not have the unit located where it will be directly blowing on a chair or bed. The constant stream of hot or cold air can become uncomfortable.
Using a drywall screw, attach the template to the wall by driving the screw through the mounting keyhole located in the center of the template.
Mark and drill out the hole for the lineset to pass through the wall. It will be handy to have an extension on your hole saw. You can check the wall for bracing and wiring, and adjust the hole location as long as there is room in the back of the indoor unit to route the lineset lines. Lower the hole saw by ½ “ before drilling through the outer wall. Be careful not to burst through the vinyl siding and shatter it.
Install the wall sleeve, cutting it to length if necessary.
Install the base pieces of the line guard.
Find a source of power and run a supply wire to the hole in the wall. You might need to add a dedicated 2 pole 220v breaker and 10/3 UF supply line.
Remove the template from the wall and hang the wall bracket on the drywall screw. Level it with a torpedo level and install the two mounting screws in the lower two vertical slots. Once you are satisfied that the bracket is level you can install two screws in the top two horizontal slots.
If possible, get a helper to hold up the indoor unit while you insert the lineset lines, drainage hose, and electrical connector cable through the hole in the wall. Hang the indoor unit on the interior bracket and make sure that it clips securely into place.
Carefully bend the lineset to fit in the line guard.
Route the lineset to the bottom of the outdoor unit, and coil it up smoothly horizontally underneath.
Attach the lineset to the outdoor unit. Torque all connections properly.
Route the connector cable to the outdoor unit, coiling up the excess up under the outdoor unit.
Use zip ties to fasten lineset lines to the bottom of the mini split frame.
Find an appropriate location for the shutoff switch right beside the line guard and cut a small hole in the side against the line guard. Land the UF wire in the terminals inside of the cutoff switch.
Run the outdoor conduit supply line from the cutoff switch to the outdoor unit.
Land the supply wires on the outdoor unit.
Wrap the lines with UV tape, using white duct tape to secure the ends.
Open caps on the outdoor unit and back the valve screw out until it hits the compression fitting.
Clean up, turn the breaker on, install batteries in the mini split remote.
Turn the unit on, and test hot and cold. Test the connections with soap water for leaks.
Wrap the connections in putty pads, wrap with insulation and UV tape, and secure with a couple wraps of white duct tape.
Finish installing line guard cover and tape the exposed joint in the middle.
Clean up, sweep up.