How to Install a Ductless Mini-Split Air Conditioner - Blueridge

a blue ridge ductless mini-split is one

of the most efficient ways to heat and

cool your home

they're perfect choice for additions

garages or rooms were ductwork is


many splits are energy-efficient quiet

and easy to install the mini split is

comprised of two units the indoor air

handler and the outdoor condenser the

components are connected by copper

tubing which allows a necessary

refrigerant to circulate a handheld

remote gives you thermostatic control

over the system before you begin

installation make sure you have all the

parts you need according to the

installation manual inspect the various

components to ensure there are no

defects before installation work begins

you can complete the majority of the

installation yourself however the last

ten percent of the work should be

completed by a trained professional

proper installation is crucial to

achieving maximum performance and energy

savings the unit can produce it's

essential to carefully read the Blue

Ridge owners manual paying particular

attention to safety precautions and

procedures before you start ensure you

have the right tools for the job

standard tools needed include the

following adjustable wrench torque

wrench hex keys or allen wrenches a

drill and drill bits a hole saw a

utility knife a wire cutter and stripper

phillips and flat blade screw drivers a

level safety glasses and work gloves

your professional installer should bring

the rest of the required tools including

manifold gauges vacuum pump flaring tool

and a dry nitrogen tank with regulator

to begin installation choose a spot on

the wall surface where you'd like the

unit to be secured location should be

free of obstructions near the air inlet

and outlet and should be at least six

feet from the floor refer to the manual

for more tips on choosing a location

remove the wall bracket from the back of

the mini split indoor air handler hold

the bracket in place use a level to

ensure it is horizontally level then

mark the screw holes with a pencil drill

the marked holes to create a pilot hole

and use appropriate sized self-tapping

screws with anchors to fix the wall

mounting frame finally checked to ensure

the wall mounting frame is firmly

attached by pulling on it

now you will create a hole in the wall

to allow refrigerant lines control wires

and condensation drain to go outside the

hole is usually two-and-a-half to three

inches using a hole saw bit drill the

hole making sure to angle downward to

the outside for proper condensate

drainage the wall mounted air handler

ships with the refrigerant piping on the

right and the drain tube on the left but

can be configured to your particular

application in this case we will move

the condensate drain tube from the left

to the right

this requires removing the outer cover

of the air handler open the service

hatch and remove the four screws across

the front

in the fifth screw in the center bottom

turn the unit over and release the for

locking tabs

carefully lift off the cover and turn

the unit over to expose the drain


unfasten the retaining clip for the

drain hose and remove the drain hose

next locate the rubber drain plug on the

right side remove it and use it to plug

the left side drain replace the hose on

the right side drain and fast in the

retaining clip prepared to install the

control wire by removing the wire cover

and wiring clip

push the color-coded multi-conductor

wire through the inlet hole on the back

of the air handler and pull a few inches

through the front leave the cover open

you'll make the wiring connections later

now carefully unfold the refrigerant

pipe making sure not to crimp the copper

tube in the process bundle the control

wire refrigerant lines and drain tubing

together with electrical tape to make

sure it'll fit easily through the wall

and installation support bracket is an

optional tool that helps by acting as a

second set of hands holding the air

handler in place while you make the

inside connections and prepare to mount

the unit lift the unit into place and

carefully past the bundled pipes and

wires through the wall opening place the

air handler on the wall mount making

sure it is firmly secured and your

refrigerant line condensate tube and

electrical cables are completely through

the wall now you can make the

multi-conductor wire connections after

cutting the length and stripping the

wire make the connections using a

screwdriver replace the wiring clip

wiring cover and close the front cover

you're not ready to install the outdoor

heat pump condenser choose the outdoor

units location based on your home

structure local codes and convenience of

installation you can place the unit on a

pad mounted on an exterior wall using

brackets or place it on a rooftop we're

using a pad the simplest and easiest

method the outside unit should be

securely mounted with bolts through the

footholds before making any connections

with the condenser securely mounted you

can make your outside connections the

air handler unit comes pressurized with

nitrogen you'll hear this harmless gas

release when you remove the plug

connector flared copper ends of the line

set to the pipe joint connected to the

air handler using the adjustable wrench

to hold the piping joint and prevent

twisting place the torque wrench on the

Union not and tighten to the setting

specified the manual

next connect the drain hose by push-fit

and secure with tape

fully been the to bundle to be flush

with the wall making sure not to crimp

the copper or drain tubing lines that

covers are an optional accessory that

hides the appearance of refrigerant

lines and control wires mount the

backing to your exterior wall and once

the lines are run snap the covers in


next remove the panel that covers the

refrigerant valves and wiring

connections some models may already have

the valves exposed remove the protective

screw caps from the valves now you can

connect the pipe joint of the outdoor

unit to the copper line set

start the Union up by hand then use the

torque wrench tightening to the

specifications in your manual

next connect the multi-conductor wire

that has run from the indoor air handler

to the Associated terminals on the

outdoor unit double check the color

coding to ensure the wires have been

connected correctly a trained

professional is recommended to complete

the installation at this point if the

copper pipes are not flare ready or if

you wish to call your line set to a

shorter lengths you will need to use a

flare tool to create a new flair

connection use a pipe cutter to cut the

copper pipe to the desired length and a

shaper to deeper the cut

be sure to put your Union not in place

first then insert the end of the pipe

into a flare tool improper flaring is

the main reason for refrigerant leaks

refer to your installation manual for

more detail and making proper flare

connections make sure the flare

connection is not tilted cracked or

otherwise damaged before connecting the

refrigerant system must be completely

sealed in order for the system to

perform properly start with a pressure

test to check for leaks using a

yellowjacket adapter will allow you to

connect standard service equipment to

the mini split service ports use dry

nitrogen and pressurize the line set and

air handler to 100 to 200 PSIG then

using a soap bubble solution spray down

all of the flare joints and watch for

bubbles to appear if bubbles are present

tighten the Union not or if necessary

reflect the copper next the technician

will use a vacuum pump engages to remove

all air and moisture prior to releasing

refrigerant into the lines

after the vacuum is complete close the

manifold gauge valve

use an adjustable wrench to remove the

service valve caps and use an Allen

wrench or hex key to fully open both

service valves releasing refrigerant

into the system the condenser requires

220-volt power from a dedicated circuit

on your breaker panel run through an

exterior mounted manual disconnect box a

qualified technician should install the

circuit breaker disconnect box and make

a high-voltage connection to the

condenser with the refrigerant released

and all high and low voltage connections

complete it's time to power up the

system and do the initial startup start

the system with the remote and check for

proper operation

congratulations on completing your new

installation you haven't already

purchased yours

check out the blue ridge many splits

available exclusively from

www.alpinehomeair.com thousands of satisfied

customers have made Blue Ridge the

highest-rated brain on the internet due

to superior quality and factory direct