Glycol/GLYCOOL Cooled Models
5.6Condenser
The condenser is designed to operate in conjunction with a drycooler. The maximum coolant pressure is 350 psig (2413 kPa).
NOTE
For pressures above 150 psig (1034 kPa), the high pressure option for high pressure valve(s) is required.
5.7Glycol Regulating Valve
The glycol regulating valve automatically regulates the amount of coolant necessary to remove the heat from the refrigeration system, permitting more fluid to flow when load conditions are high and less fluid to flow when load conditions are low. The valve consists of a brass body, balance spring, valve seat, valve disc holders, capillary tube to discharge pressure, and adjusting screw.
5.7.1Standard Valve - 150psig (1034kPa) System for 3 & 5 Ton Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5 Ton Units (Johnson Controls Valve)
For details, refer to 4.3.1 - Standard Valve - 150psig (1034kPa) System for 3 & 5 Ton Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5 Ton Units (Johnson Controls Valve).
5.7.2High Pressure Valve - 350 psig (2413 kPa) System for 3 Ton Units (Metrex Valve)
For details, refer to 4.3.2 - High Pressure Valve - 350 psig (2413 kPa) System for 3 Ton Units (Metrex Valve).
5.7.3Testing Valve Function
When the refrigeration system has been off for approximately
Should the coolant continue to flow, the valve is either improperly adjusted or the pressure sensing capillary is not connected properly to the condenser.
Table 20 Refrigerant control settings psi (kPa)
Low Pressure | Low Pressure | High Pressure |
Cut Out | Cut In | Cut Out |
|
|
|
20 (137.9) | 65 (448.2) | 360 (2482) |
|
|
|
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