MrCool DIY E Star Series Manuel technique
www.mrcool.com
DIY
®
E Star™Series
3RD GEN Do-It-Yourself Ductless Mini-Split Heat Pump A/C
Easy Do-It-Yourself installation
with our Quick Connect®line set
Control your unit from anywhere
with our Smartphone App
7 Year Compressor &
5 Year Parts Warranty
SMART CONTROLLER
Note: This guide is for convenience.
Please refer to the more detailed installation
instructions in the manual as needed.
STEP 1 - inside STEP 3 - inside
STEP 2 - inside
1. Drill screw holes at the indicated points into
studs.
2. Remove the bracket from the rear of the interior
air handler.
3. Screw the metal bracket to the wall according to
the template.
4. Use a level to
ensure the
mounting plate is
flush and level.
1. Locate the wall template.
2. Place the template on the wall at the installation
location.
3. Use the template
to mark the drill
points and wall hole
site.
4. Remove the template.
Wall
Indoor Outdoor
0.2 - 0.3in
(5 - 7 mm)
1. Drill a 3.5 inch diameter hole through the wall, at
a slightly downward angle, to accommodate the
line set, condensate drain line and communication
cable to the exterior condenser.
2. Use the vinyl tape to wrap the line set,
condensate drain line and communication cable
into a bundle. The drain MUST be on the bottom.
3. Push the bundle through the wall hole.
condensate
drain line
1 2
4. Snap the air handler onto the wall bracket.
STEP 3 - continued
STEP 4 - outside
STEP 4 - continued
1. Place outside condenser unit firmly on the
ground or attach it to a secure metal wall bracket
or pad. Drain pipe is not required and can be
installed as necessary only if elevated.
2. Remove the plastic seals from the indoor
handler refrigerant lines.
3. Carefully unroll the amount of Quick Connect®
line set needed to connect the indoor handler
fittings and the outside condenser. Leave the coiled
portion stored near the condenser.
4. Align the Quick Connect® refrigerant lines to the
matching indoor handler fittings. Tighten the first
few threads by hand.
5. Using open ended wrenches (i.e. crescent or
adjustable): hold the points marked “1” and turn
the nuts only at the points marked “2” (Select the
appropriate wrench according to the dimensions of
the connector).
6. Ensure that the screw connectors do not skew
while working quickly to tighten them.
Ground Installed:
12 in (30 cm)
Bracket Installed:
6 in (15 cm)
clearance between
back and wall
79in (200cm)
in front
12in (30cm)
on left
24in (60cm)
above
24in (60cm)
on right
1. Carefully roll the excess tubing and place it
behind the condenser.
2. Attach the bundle connections to the outside
condenser.
STEP 5 - outside
Carefully unroll to indoor
handler connection
Connect directly to
exterior condensor
Keep excess coiled
Radius
3. Using two crescent or adjustable wrenches,
screw the quick connect components together. Use
one to hold the valve and keep it from twisting and
the other to
tighten the fitting.
4. See manual for
tool and torque
requirements .
Improper
connection can
void warranty.
1. Remove the brass caps from the valves on the
exterior condenser unit.
2. Use an Allen Wrench to open the valve until it
stops turning. Be sure not to exert excessive force
on the valve. You may hear a soft hissing sound as
a slight amount of R-410a refrigerant exits the
condenser.
3. Apply soapy water or leak detection spray to the
Quick Connect® fittings. If you see bubbles, this
indicates there is a leak. Tighten the connection
accordingly until the bubbles are gone.
STEP 6 - outside
STEP 8 - outside
1. Remove the electrical cover.
2. Wires and terminals that are numbered should
be matched and connected accordingly.
3. If the unit is a 115 volt system (12K), hook to
terminals _L1_ and __N and Ground.
4. If the unit is a 208/230 volt system (all other
sizes), hook to terminals _L1_ and _L2_ and Ground.
Refer to the diagrams / photo at the bottom left.
WARNING
BEFORE PERFORMING ANY ELECTRICAL WORK, TURN OFF ALL
POWER TO THE SYSTEM.
1. Wire colors of this series / model may differ from previous
models, other series and general conventions.
2. All wiring must be performed in accordance with the
wiring diagrams shown here and all municipal, state and
federal regulations.
4. Be sure whether your unit is 115 volt (12K only) or 208/230
volt (all other sizes). Incorrect voltage can cause serious
damage to the system and void the warranty.
5. A certified electrician is required to supply power from a
disconnect of an appropriate rating - see manual.
STEP 7 - outside
GREEN Y/G
32 L1L21
3
21 L1L2
WIRE CONNECTING DIAGRAM
OUTDOOR UNIT TERMINAL
TO INDOOR UNIT 208/230V
POWERSUPPLY
GREEN Y/G
32 L N1
3
21 L N
OUTDOOR UNIT TERMINAL
TO INDOOR UNIT 115V
POWERSUPPLY
WIRE CONNECTING DIAGRAM 12K
models
only
all
other
models
RED
WHITE
BLACK
RED
WHITE
wrap from
bottom to top
to ensure tape
overlap sheds
water
wrapped from
inside unit
Quick Connect
®
connections
keep line excess
bundled and coiled
then wrap together
wrap the Quick Connect®
connections with the black
sound deadening pads.
1. Place the provided batteries in the remote
control.
2. Press the Power button on the remote control.
3. The MrCool®DIY®Series should activate
automatically.
4. To use the MRCOOL® Smartphone App refer to
the Smart Controller Module instructions included
in the box.
STEP 8 - continued
STEP 9 - inside
DIY
®
E Star™Series
3RD GEN Do-It-Yourself Ductless Mini-Split Heat Pump A/C
1. To protect Quick Connect® connections and
reduce vibration, wrap them with the black sound
deadening pads. Pack tightly before wrapping the
connections with the white pipe insulation. Refer to
the diagram on the following page.
2. To protect pipe insulation, use the vinyl tape to
wrap the Quick Connect® lines and communication
cable snugly together from bottom to top (to shed
water). Wrap excess line set together in a coil
beside the condenser. Refer to the diagram on the
following page.
3. To further improve overall appearance and long
term durability it is recommended to install using
MRCOOL®LineGuard®
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