Quick Start Guide

ManualsBrandsMrCool ManualsAir ConditionersDIY Multi-Zone

1. Starting with the top valve, using an open-ended wrench,

or crescent (adjustable-type) wrench, remove the brass cap

from the valve on the outside unit.

2. Then, insert a 5 mm Allen wrench to open the valve by

turning it counter-clockwise until it stops turning. DO NOT

force it.

NOTE: When opening the valves you may hear a soft

hissing sound as a slight amount of R-410a refrigerant

exits the condenser.

3. Reinstall the cap and tighten securely. Then, repeat the

same steps for the bottom valve.

4. Now you will perform the same action for the two Main

Valves (King Valves) after all other valves have been opened.

5. Using soapy water (in a spray bottle or with a brush), or

leak detection spray, apply to the Quick Connect

ﬁttings at

the indoor air handler and outdoor condenser to check for

leaks. If you see bubbles begin to form, this indicates there is

a leak. If so, re-tighten the connection accordingly until the

bubbles are gone. Please refer to the manual for more

detailed information on checking for leaks.

STEP 6 - outside

1. Carefully roll the excess tubing and place it behind the

condenser, lying ﬂat on the ground.

2. Align the line set connectors to the outside condenser and

tighten the ﬁrst few threads by hand. NOTE: Make sure the

piping connection to outside unit has plenty of slack and

line set is not stressed.

Carefully unroll to indoor

handler connection

Connect directly to

exterior condenser

Keep excess coiled

Radius

3. Using two open-ended wrenches, or crescent

(adjustable-type) wrenches, and the image below as a guide:

tighten the bottom screw connector. Place wrenches on

points marked “1” & “2,” only turning the nut at the point

marked “2.” Ensure the screw connector does not become

crooked as you work quickly to tighten it. Tighten the

connector until it is

snug.

4. Then, tighten the

connector slightly

beyond that point to

apply torque to the

connector. Please refer

to the manual for

information about

torque requirements.

Repeat the same steps

for the top screw

connector.

STEP 5 - Outside

King

Valves