Goodman CONDENSING AC UNIT Installation & Service Reference

Summary of CONDENSING AC UNIT

  • Page 1

    Important safety instructions the following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It is the owner’s and installer’s responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure to he...

  • Page 2: Warning

    2 use field-supplied spreader bars when lifting the unit to mini- mize the possibility of lifting cable/straps damage. To protect the cabinet louvers, use protective material such as plywood behind the cable/straps. Arrange the straps to form a central suspension point. Note: when raising and settin...

  • Page 3: Warning

    3 to avoid possible explosion, use only returnable (not disposable) service cylinders when removing refrig- erant from a system. • ensure the cylinder is free of damage which could lead to a leak or explosion. • ensure the hydrostatic test date does not exceed 5 years. • ensure the pressure rating m...

  • Page 4: Notice

    4 refrigerant line connections notice this unit is shipped with a nitrogen/helium holding charge only. Unit must be evacuated and charged per installation instructions with refrigerant listed on serial rating plate. Note: holding charge must be removed before brazing. Open service valves slowly to r...

  • Page 5: Warning

    5 5000 4500 4000 3500 3000 2500 2000 1500 1000 500 0 1 2 3 4 5 6 7 8 9 10 leak(s) present minutes v ac u u m in m ic ron s condensibles or small leak present no leaks no condensibles • if the pressure rises to 1000 microns or less and remains steady the system is considered leak-free; proceed to sta...

  • Page 6: Notice

    6 example: a 7 ½ ton unit is to be installed. The distance from the building to the unit is 75’. Calculate the minimum wire size assuming no more than 2% voltage drop. Mca for 7 ton 230v unit = 43.3 (from s&r plate). Applying previous table wire sizes less than #8 awg cannot be used for circuits whi...

  • Page 7: Warning

    7 for the 7-1/2 ton unit starting charge should be 15 lb of r-22 and 18 lbs for the 10 ton unit. The length of line set, indoor unit airflow, condensing unit location and number of tubing fittings will have an impact on final unit charge amount. Turn the elec- trical power on, and let the system run...

  • Page 8

    8 troubleshooting analysis table complaint probable cause remedy 1. Excessive charge of refrigerant in system. 1. Purge or pump-down excessive charge. 2. Inadequate supply of air across the 2. Make certain that coil is not fouled in any condenser coil. Way, or that air is not re-circulating. 3. Non-...