Install Manual

All of these steps must be completed BEFORE powering the unit, or else it could damage it.

IMPORTANT:

You will be asked to check for leaks at the piping connections multiple times throughout the following

steps of the installation, because the pressures within the lines will change once the unit is turned on

and this could reveal leaks not present during the initial check. These are imperative to make sure your

connections are not allowing refrigerant to escape the system. When checking for leaks, if any bubbles

form, it indicates the system has a leak and the screw connector needs to be retightened. For more

information about checking for leaks, please refer to the Electrical and Gas Leak Checks section of the

manual.

After completing steps 1-3, you will now need to check all of the piping connections (at indoor unit and outdoor

unit) for leaks. You can do this by using leak detection spray, or applying a soapy water solution (liquid

detergent/water mixture) to the connection via a spray bottle or brush. If any bubbles begin to form, it is an

indication there is a leak and the connection needs to be retightened. Tighten the connection and recheck it for

leaks. Refer to Electrical and Gas Leaks Checks section of this manual for more information.

Refrigerant Piping Connection

Page 31

mrcool.com