Installation Guide
 Page 3 mrcool.com
Read Before Using
Incorrect usage may cause serious damage or injury.
WARNING
CAUTION
WARNING
!
Safety Precautions
The symbols below are used throughout this manual to indicate instructions that should be 
followed closely or actions that should be avoided to prevent death, injury, and/or property damage.
This symbol indicates ignoring instructions may cause bodily injury, damage 
to the unit, or other surrounding property.
This symbol indicates ignoring instructions may cause death or serious injury.
This symbol indicates that you should NEVER perform the indicated action.
DISCLAIMER: You are assuming risk by handling materials containing refrigerants under 
pressure, that if not handled properly can cause bodily injury. If you do not feel comfortable 
performing this installation process, we recommend you retain the services of a qualified HVAC 
professional.
****ELECTRICAL WORK MUST BE COMPLETED BY A QUALIFIED ELECTRICAL TECHNICIAN****
 DO NOT share the electrical circuit with other appliances. You must use an independent
 power supply. An improper or insufficient power supply could cause fire or electrical shock.
 DO NOT allow any substances or gases to enter the unit when connecting the refrigerant
 piping. The presence of other gases or substances will lower the unit’s capacity, and may
 cause abnormally high pressure during the operation cycle. This could cause an explosion
 and/or injury.
 DO NOT allow children to play with the air conditioner. Children should be supervised
 around the unit at all times.
 DO NOT insert your fingers, rods, or other objects into the air inlet or outlet. The fan within
 the unit could be rotating at high speeds and could cause injury. 
 DO NOT use flammable sprays such as hair spray, lacquer, or paint near the unit. These
 could cause fire and/or an explosion.
 DO NOT operate the unit in places where it could be exposed to or near combustible gas.
 Emitted gas could collect around the unit and cause an explosion.
 DO NOT operate the unit in a room where it could be exposed to excessive amounts of water
 (such as a bathroom or laundry room). Too much exposure to water can cause electrical
 components to short circuit.
 DO NOT expose your skin or body directly to the cool air coming from the unit for a
 prolonged period of time.
 DO NOT install the unit within 3 ft (1 m) of any combustible gas if the unit is equipped with an
 auxiliary heater.
 DO NOT operate the air conditioner with wet hands. This could cause electrical shock. 
 DO NOT turn on the power until the installation has been completed. 










