Liebert Deluxe System/3 - DX

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2.4 PipingInstallationAll fluid and refrigeration connections to the unit, with the exceptions of the condensate drain andlive steam, are sweat copper. Factory-installed piping brackets must not be removed. Field-installedpiping must be installed in accordance with local codes and must be properly assembled, supported,isolated and insulated. Avoid piping runs through noise-sensitive areas, such as office walls and conferencerooms.Refer to specific text and detailed diagrams in this manual for other unit-specific piping requirements2.4.1 Drain LineA 3/4" NPT is provided for the evaporator coil condensate drain. This drain line also drains thehumidifier, if applicable. The drain line must be located so it will not be exposed to freezing temperatures.The drain should be at least the full size of the drain connection and pitched a minimum of 1/8"per ft. (11mm per meter).NOTEThis line may contain boiling water. Use copper or other suitable material for the drain line.For units without a condensate pumpThe unit is shipped from the factory with an internally-mounted trap. No external trap isrequired. The drain line must comply with all applicable codes.For units with a factory-installed condensate pump optionThe unit is shipped from the factory with a condensate pump installed. The condensate pumpdischarge (drain) line must comply with all applicable codes.For units with a field-installed condensate pumpThe unit is shipped from the factory with the condensate pump option, unmounted in the unit,which must be installed in the field. The unit has an internally mounted trap. The drain linefrom the unit to the condensate pump does not require a trap. The discharge (drain) line fromthe pump must comply with all applicable codes.2.4.2 Piping Considerations for Raised-Floor ApplicationsAll piping below the elevated floor must be located so that it offers the least resistance to air flow.Careful planning of the piping layout under the raised floor is required to prevent the air flow frombeing blocked. When installing piping on the subfloor, it is recommended that the pipes be mounted ina horizontal plane rather than stacked one above the other. Whenever possible, the pipes should berun parallel to the air flow.2.5 Electrical ConnectionsThree-phase electrical service is required for all models in either 208, 230, 460 or 575V, 60Hz; or 200,230 or 400V, 50 Hz. Electrical service shall conform to national and local electrical codes.Install a manual electrical disconnect switch within 5 feet (1.6 m) of the unit in accordance withcodes. A factory-supplied disconnect switch may be factory-mounted within the unit and accessiblefrom the exterior.12
InstallationFigure 8Electrical connection detailsROOM UNIT CONNECTIONSNOTES3-phase line voltagesupply to line voltageconnection block oroptional main disconnectswitch (Note 2)Earth ground to groundlug bolt or optionalground bar2-wire connection forremote unit shutdown(Note 3)2-wire connection foreach Special Alarm(Note 4)2-wire connectionoptional SiteScan4-pin plug connections foroptional remotetemperature and humiditysensor2-wire connection forcommon alarm2-wire connection forheat rejection interlock(Note 5)OR37 38 24 50 51 55 56 77 7875 76 70 71L1L2L322 ga. 4-wire cable6-inchpigtails atjunctionboxTo line voltagecomponents on Liebertroom unit electric panelTo line voltagecomponents inLiebert roomunitP16ControlBoardTerminals 75 & 76 areconnected to common alarmrelay (K3) NO contact (max 1Aat 24V)Wires 70 & 71 are connectedto compressor side switchesand Econ-O-Coil relay (R5).R5 is provided on FE/UEunits only.1. Refer to specification sheet forFull Load Amps and Wire SizingAmps.2. Field-supplied room unit maindisconnect switch in accordancewith local codes ordered asoptional equipment and factoryinstalledin Liebert room unit.3. For remote unit shutdown,replace jumper between 37 & 38 atterminal strip with NormallyClosed switch having a minimum75VA rating.4. Special alarm connection made byadding Normally Open contactsbetween Terminals 24 & 50, 24 &51, 24 & 55 and 24 & 56. Only onealarm (between 24 & 50) isavailable on standardmicroprocessor.5. Heat rejection interlock is notsupplied on chilled water models.6. Field-supplied disconnect switchmounted within sight ofcondenser/drycooler and inaccordance with local codes orordered as optional equipmentand factory-installed in Liebertcondenser/drycooler. CDF-065,CDF-083, CDF-086, CDF-097 andCDF-104L are single-phase fanspeed condensers. All othercondensers and all drycooler andpump packages require a 3-phaseline voltage supply.7. Glycol pump package suppliedwith drycoolers only. Pump 2 issupplied only when dual pumppackage is ordered.8. Lee-Temp tanks and assemblysupplied on air-cooledcondensers with Lee-Tempcontrol systems only.InterconnectedRemote Heat Rejection Connections2-wire connection plusground for Lee-Temp heaterpads (Note 8)3- or single-phase line voltagesupply to optional maindisconnect switch (Note 6)Earth Ground2-wire connection for heatrejection interlock3-wire line voltageconnection plus ground forglycol pump. An additional3-wire line voltage neededfor dual pump packages(Note 7).Electric Panel1See Note 821 fan2 fan3 fanDiagram is for directdrive air-cooledcondensers(for air-cooled units)and direct drivedrycoolers(for glycol/GLYCOOLunits).Wire LegendFactory-supplied linevoltage wiringField-supplied linevoltage wiringFactory-supplied 24V,NEC Class 2 wiringField-supplied 24VNEC Class 2 wiringField-supplied earthgrounding wire13
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 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 40 and 41: Air Cooled ModelsTable 19 Indoor un
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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