Measured subcooling for RTAA
- Suction Superheat setpoint for 70-125 = 4F
- Subcooling = 11F to 22F
- Suction Superheat setpoint for 130-400 = 8F
- Subcooling = 11F to 22F
- These are measured at the king valve, chiller running at full load, and with all fans running
- The subcooling values is based on 95 degree ambient
- For high ambient conditions, subcooling will be closer to 11F. For low ambient conditions, subcooling will be closer to 22F
- Bubbling in the sightglass could indicate low charge or non-condensibles
Suction superheat = (Suction temp) - (Saturated evap temp)
Additional details
Other Question/Problem/Cause Statements
- Correct Refrigerant Charge for RTAA
Facts
Air-Cooled Chiller (Pueblo) (RTAA 130-400 Ton)
Air-Cooled Chiller (Pueblo) (RTAA 70-125 Ton)
Air-Cooled Condenser (Pueblo) (RTCA)
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.