The outdoor unit must be connected to the indoor coil using field supplied refrigerant
grade copper tubing that is internally clean and dry. Units should be installed only with
the tubing sizes for approved system combinations. The refrigerant charge shown in
the nameplate is for standard size interconnecting liquid line lengths up to 15 feet.
7
NOTE
Using a larger than specified line size could result in oil return problems. Using a
too small line will result in loss of capacity and other problems caused by insuffi-
cient refrigerant flow. Slope horizontal suction lines at least 1" every 20 feet
toward the outdoor unit to facilitate proper oil return.
3.5 Unit Location Considerations
• Ensure the top discharge area is unrestricted for at least 5 feet above the unlt.
• Provide at least 3 feet clearance in front of the control box (access panels) and any other
side requiring service.
• Do not locate close to bedrooms as operational sounds may be objectionable.
• Avoid locations near windows and similar areas where condensation and freezing defrost
vapor can annoy a customer.
• Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to
ensure adequate airflow.
• Outdoor unit location must be far enough away from any structure to prevent excess roof
runoff water or Icicles from ralling directly on the unit.
• Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to
ensure adequate airflow.
• Outdoor unit location must be far enough away from any structure to prevent excess roof
runoff water or icides from ralling directly on the unit.
Avoid install
near bedrooms
Min 5 feet unrestricted
Min 3 feet
unrestricted
Min 12"
to wall
Min 20 inches
to shrubbery
Min 12" to
shrubbery
Access panel
1. suggested Locations for Best Reliability
Fig. 3 suggested Locations for Best Reliability
