The Specifications of a Goodman CKT42-1A

• The Goodman CKT42-1A is a high-performance air conditioner compressor unit meant for central cooling systems. The unit should only be installed or maintained by a trained professional. When you're thinking about getting an air conditioner, remember to pay attention to the energy efficiency ratings, not just the cooling power. The energy efficiency rating will help you estimate how much it will cost to run the unit each year.

Dimensions

• The Goodman CKT42-1A is an outdoor condenser unit meant to be installed on ground level or on a rooftop. It's 29 inches wide, 29 inches deep and 37.5 inches tall. Under a lip overhanging the liquid and suction nozzles is the 1-1.8 -inch diameter power jack and the 7/8-inch diameter control line jack. The liquid nozzle is 3/8 inches and the suction nozzle is 7/8 inches. The approximate shipping weight of the unit is 270 pounds.

Motor and Electrical Characteristics

• The compressor operates on either a 208 or 230 volt AC power supply, with a minimum voltage of 197 and a maximum voltage of 253. For circuit protection, the wire ampacity value is 21.8, meaning that only wires and switches rated for at least 21.8 amps should be used. It requires a 35 amp fuse or HACR type circuit breaker. The compressor motor has an RLA ("Rated Load Amperage") value of 16.0 amps. RLA is the average expected current under normal conditions. The LRA ("Locked Rotor Amperage") value is 90 amps. LRA is the expected current load when the rotor is still, such as when it freezes or if the bearings are bad. If the rotor fails, the circuit breaker should trip and protect the motor from the current surge.

  The fan has an FLA ("Full Load Amperage") rating of 1.8 amps. This is the amperage when the fan is operating at full horsepower, not the standard running current. The unit is rated for 1/4 horsepower.

Cooling and Performance

• Depending on the model evaporator used, the CKT42-1A has a total cooling capacity that ranges from 39,000 to 41,000 BTUH, which stands for British Thermal Units per Hour. It has a "sensible," or most efficient, cooling capacity that ranges from 28,000 BTUH to 30,000 BTUH, again depending on the evaporator used.

  The seasonal energy efficiency rating, or SEER, also depends on the evaporator the unit is paired with, but the average value is 12.75. SEER is the ratio of total cooling output in BTUs over the cooling season to total energy consumption in kilowatt hours over the same period. The average EER value, which is the energy efficiency ratio over a period of a few hours of continuous operation, is 11.68.

  The loudness rating of the unit is 8.4 bels. Bels are a relative logarithmic measure of loudness that range from 0 to 13. A five bel sound is 10 times as loud as a four bell sound, a six bel sound is 10 times as loud as a five bel sound, and so on.