F31HC-F35HC-UL

29 LU-VE unit coolers are suitable for use with any of the following refrigerants; R-12, R-22, R-134A, R-404A, R-407A, R-407C, R-407F, R-448A, R-449A, R-449B and R-507 They may also be used with any EPA approved replacements for; R-12, R-22, R-502 And Water / Glycol Unit Coolers are also suitable for use with Refrigerant R-744 (Carbon Dioxide) in a SECONDARY LOOP or CASCADE system. All units which are suitable for use with Refrigerant R-744 will include “CO2” listed in the unit model nomenclature - followed by either 870 PSIG or 1,230 PSIG. All units designed for use with Water / Glycol must be custom circuited for the specific application. These units ARE NOT SUITABLE for use with CO2. Unit coolers constructed with copper tube coils are not suitable for use with ammonia (R-717) Maximum Working And Test Pressures • The maximum working pressure of all units which are suitable for use with CFC, HCFC and HFC refrigerants is 350 PSIG . The maximum, recommended unit test pressure for field leak testing of these units is 150 PSIG . • The maximum working pressure of all units specifically designed for use with CO2 refrigerant is 870 PSIG for cascade systems and 1,230 PSIG for secondary loop systems. The maximum, recommended unit test pressure for field leak test- ing of these units is 300 PSIG . Additional Notes • Always verify the maximum test pressure rating of any directly connected valves, system components or controls (ex. solenoids, expansion valves, pressure transducers, etc.) to avoid possible damage to these components during pressure testing. If required, install shut off / isolation valves between the unit cooler and any such accessories for purposes of system pressure testing. For Any Unit Coolers Which Will Operate With R-744 Refrigerant (CO2) • If the refrigeration system is de-energized, venting of the R-744 refrigerant through the system pressure regulating / relief valves can occur. In such cases, the system may need to be recharged with R-744, but in any case, pressure regulating / relief valves must not to be defeated or capped. The relief setting must not be altered in any way. • A sufficient number of pressure relief and pressure regulating / relief valves may need to be provided based on the sys- tem capacity and located such that no stop valve is provided between the relief valves and any parts or sections of the system being protected IMPORTANT NOTES AND INFORMATION LU-VE reserves the right to make changes and / or modifications to our equipment in order to improve the perfor- mance or appearance of our products at any time without notice and without any obligation to previous production units. All technical characteristics are stated in the current, published product catalog.