Liebert Deluxe System/3 - DX

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Air Cooled ModelsTable 19 Indoor unit approximate refrigerant charge lb (kg.) R–22RefrigerantModel 60 Hz (50 Hz) Charge/Circuit75A 4.0 (1.8)114A (115A) 5.0 (2.3)125A (130A) 5.0 (2.3)199A 6.0 (2.7)245A 7.0 (3.2)290A 7.0 (3.2)380A 8.0 (3.6)Table 20Outdoor condenser approximate refrigerant charge lb (kg) per circuitModelFan SpeedControlLee-Temp(Includes Receiver)097 5 (2.3) 27 (12.3)108 6 (2.7) 33 (15.0)130 5 (2.3) 27 (12.3)104L 4 (1.8) 21 (9.5)175 7 (3.2) 38 (17.2)165L 5 (2.3) 27 (12.3)205L 7 (3.2) 38 (17.2)216 12 (5.4) 64 (29.0)291 15 (6.8) 75 (34.0)308L 11 (5.0) 58 (26.3)349 22 (10.0) 113 (51.3)408 20 (9.1) 101 (45.8)415L 15 (6.8) 75 (34.0)451 25 (11.3) 124 (56.3)480C 20 (9.1) 101 (45.8)488 30 (13.6) 149 (67.6)510C 30 (13.6) 149 (67.6)580 30 (13.6) 150 (68.0)820 39 (17.7) N/A830L 30 (13.6) 149 (67.6)Table 21 Liquid line charge lb/10 ft. (kg/.3m) R–22Line Size, OD CuCharge1/2” .73 (.33)5/8” 1.17 (.52)7/8” 2.44 (1.09)1-1/8” 4.16 (1.86)1-3/8” 6.33 (2.83)Total Charge per Circuit.(There are two circuits per system)Table 22= Unit Charge+ Condenser Charge+ Liquid Line ChargeRefrigerant control settings for air cooled units psi (kPa)ModelRefrigerantTypeLow PressureCut OutLow PressureCut InHigh PressureCut OutFan Speed Control R-22 15 (103.4) 35 (241.3) 360 (2482)Lee-Temp R-22 20 (137.9) 65 (448.2) 360 (2482)32
3.5 Lee-Temp/Flood Back Head Pressure Control <strong>System</strong>sAir Cooled ModelsThe Lee-Temp system consists of a modulating type head pressure control valve and insulated receiverswith heater pads to ensure operation at ambient temperatures as low as -30°F (-34.4°C).3.5.1 PipingBe sure to install the valve with the refrigerant flow in the proper direction. When soldering or brazingthe valves, it is very important that the internal parts be protected by wrapping the valve with adamp cloth to keep the valve temperature below 250°F (121°C).3.5.2 Materials Supplied•Built-in, pre-wired condenser control box• Air cooled condenser• Piping access cover to be reinstalled when piping is complete• Bolts – four per leg (3/8"x5/8")• Terminal block for two-wire, 24V interlock connection between the unit and the condenser• Condenser legs: four on one-fan models, six on two- and three-fan models, and eight on four-fanmodels• Lee-Temp system:• Insulated storage receiver – one per circuit• Head pressure control valve with integral check valve – one per circuit• Adapter assembly – one per circuit• Rotalock valve – one per circuit• Pressure relief valve – one per circuit• Liquid level sight glass – two per circuit• Check valve – one per circuit.• Bolts – six per receiver (3/8" x 1")NOTELee-Temp heater pads require a separate, continuous electrical source ofeither 115 VAC or 200/208/230 VAC.3.5.3 Dehydration1. Open all disconnect switches.2. Pull all fuses except transformer fuses. On units supplied with circuit breakers, open all breakersexcept for the transformer.3. Jumper Fan Safety Switch between Common and Normal Open. Turn disconnects ON.4. Use the manual override switches to energize the solenoid valves.5. Connect refrigeration gauges to the suction and discharge service valves of compressors 1 & 2.6. Open all service valves.7. Charge circuit #1 to 150 psig (1034 kPa) with dry nitrogen containing a tracer of Freon.8. Check for pressure increase in circuit #2. This would indicate that the refrigeration circuits arecross-circuited and must be re-piped.9. If there is no pressure increase, charge circuit #2 to 150 psig (1034 kPa) with dry nitrogencontaining a tracer of Freon and leak-test both circuits.10. After completion of leak testing, release test pressure and pull a vacuum on both circuits.11. After 4 hours, check gauge readings and, if they have not changed, purge with Freon.12. Pull a second and third vacuum of 250 microns (29.84 in. Hg), leave for 2 hours and recheckgauges.33
Page 1: Precision CoolingFor Business-Criti
Page 5: FIGURESFigure 1 Downflow (DH and DE
Page 8 and 9: Table iiUnit weightsAir Cooled Mode
Page 10 and 11: 1.1.3 GLYCOOL (Chilled Glycol Cool
Page 12 and 13: Installation2.3 Unit DimensionsFigu
Page 14 and 15: InstallationFigure 2Upflow 6, 8 and
Page 16 and 17: InstallationFigure 4 Upflow 15, 20
Page 18 and 19: InstallationFigure 6Projection ofdi
Page 20 and 21: 2.4 PipingInstallationAll fluid and
Page 22 and 23: InstallationFigure 9Electrical fiel
Page 24 and 25: Installation2.6.3 Ducted Applicatio
Page 26 and 27: InstallationFigure 12 Plenum dimens
Page 28 and 29: 3.3 Refrigerant PipingAir Cooled Mo
Page 30 and 31: Air Cooled ModelsFigure 14 Piping:
Page 32 and 33: Air Cooled ModelsFigure 16 Upflow a
Page 34 and 35: Air Cooled ModelsTable 13ModelCSF/C
Page 36 and 37: Air Cooled ModelsFigure 19 Air cool
Page 38 and 39: Air Cooled ModelsFigure 21 Piggybac
Page 42 and 43: Air Cooled Models3.5.4 Charging1. M
Page 44 and 45: Glycol Cooled/GLYCOOL Models4.0 GLY
Page 46 and 47: Glycol Cooled/GLYCOOL ModelsFigure
Page 52 and 53: Figure 29 6- and 8-fan drycooler ca
Page 56 and 57: Water Cooled Models5.0 WATER COOLED
Page 58 and 59: Water Cooled ModelsFigure 33 Downfl
Page 60 and 61: Table 37Factory-provided piping con
Page 62: 54Water Cooled Models

Liebert Deluxe System/3 - DX

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