Figure i Model number designation External Telecommunication Nominal Btuhs (1000) 0=Standard Supply & Return Openings 3=4 or 5 Ton Unit With 3 Ton 7 = Scroll Compressor Supply & Return Openings with POE oil, R-407C R = Right Compressor L = Left Compressor P = 208/230V –...
Space Savings The Liebert InteleCool2 does not use any of the valuable floor space inside the secure space. Instead, it is mounted on the outside wall. No additional space is required outside or on a roof. Easy to Install The Liebert InteleCool2 is assembled, wired, piped, charged with refrigerant, and fully factory tested as a system to ensure trouble free installation and start-up.
Low Pressure Switch and Low Pressure Bypass Timer Low Pressure Switch: Used to protect the Liebert InteleCool2 if the evaporator blower fails, the air filter becomes clogged, the refrigeration circuit malfunctions or if there is loss of refrigerant. The low...
Tele2 Control This microprocessor-based controller controls two Liebert InteleCool2 units. The unit has a 10-key keypad, four-row by 20-column LCD, an RS-232 modem port, and an RS-232 terminal port. It allows up to eight customer-selectable, isolated normally open, dry contact alarm inputs. The Tele2 control requires either a THS28-30 or a THS28-60 sensor assembly.
2.1.2 Location Considerations The Liebert InteleCool2 unit is field-mounted on an outside wall. Additional framing in the wall may be required to ensure adequate structural support. The outdoor area near the condenser supply and discharge must also be considered. To assure ade- quate air supply, the unit should be mounted in a clean area, away from loose dirt and foreign matter that may clog the condenser coil.
Openings Piping Connections The Liebert InteleCool2 is a self-contained, packaged unit. All refrigerant piping connections are made at the factory, so no external condenser is required. The evaporator coil condensate drain is fac- tory-supplied and drains outdoors through the unit base pan. The condensate drain tubing should be...
Make sure that the voltage supplied agrees with the voltage specified on the unit nameplate. The Liebert InteleCool2 comes standard with a factory-installed circuit breaker, accessible through an external access panel. An external, wall-mounted power disconnect switch (field-supplied) may be required for local codes.
If you have questions, call the thermostat manufacturer, Honeywell, at 800-468-1502. Dual Unit Control The Liebert InteleCool Dual Unit Control is designed to control two Liebert InteleCool units in a “lead/lag” fashion. The control contains an electronic timer for switching the operating sequence of two units on a one-, two-, four-, or eight-day basis.
Installation Outside Air Damper - Optional Units supplied with fixed (non-modulating) outdoor air damper can be adjusted as follows: 1. Remove the screws from the middle panel and remove panel. 2. Loosen the damper plate screws on the backside of the middle panel. 3.
Checklist for Complete Installation HECKLIST FOR OMPLETE NSTALLATION ___ 1. Proper clearance for service access has been maintained. ___ 2. Equipment is level and mounting fasteners are tight. ___ 3. Ducting completed, if required. ___ 4. Line voltage to power wiring matches equipment nameplate. ___ 5.
ROCEDURE Verify that installation is complete by using the Checklist for Complete Installation. 1. Disconnect all power to the Liebert InteleCool2 unit. 2. Adjust remote control to prevent compressor, heat and fan operation. 3. Turn on main breaker and check line voltage on main unit disconnect switch. Line voltage must be within ±...
Compressorized cooling is provided by a high efficiency system consisting of a compressor, thermo- static expansion valve, evaporator, and condenser coil. The Liebert InteleCool2 uses R-407C refrigerant in a conventional vapor-compression refrigeration cycle. Heat is removed from the air in the space by blowing the air across the evaporator coil. As heat is transferred to the refrigerant in the evaporator, the refrigerant boils and turns to a warm vapor.
Operation Economizer Cooling—Optional The Economizer mode uses outside air to cool the room when the outside air temperature is cool enough to allow for economical cooling. Components include the damper, spring return direct drive actuator, enthalpy sensor and actuator control board with an integral mixed air sensor. Economizer operation is enabled when the outside conditions meet required temperature and humidity as set on the enthalpy sensor.
The high pressure switch is mounted in the liquid line. Electrically, it is connected in series with the compressor start circuit, which will shut down the compressor and condenser fan if the liquid pres- sure exceeds 400 PSIG (2758 kPa). This protects the Liebert InteleCool2 in the event of condenser motor failure or condenser coil blockage.
Includes a low pressure switch, low pressure bypass timer (described above) and fan cycle control. Fan Cycle Control—Condenser Fan Cycling Control; allows the Liebert InteleCool2 unit to provide cooling to the space when the outdoor ambient temperature is lower than 50°F (10°C) and down to -20°F (-28.9°C).
Maintenance AINTENANCE WARNING Risk of electric shock. Can cause injury and death. Disconnect all local and remote electric power supplies before working within. Potentially lethal voltages exist within this equipment during operation. Observe all cautions and warnings in this manual. Only qualified service and maintenance personnel should work with this equipment.
The correct superheat setting is between 10° and 20°F (5.5° and 11.1°C), under normal load condi- tions and “steady-state” operation. Some models of Liebert InteleCool2 will be supplied with a non- adjustable expansion valve, so no adjustments are possible.
Maintenance Mechanical Failure A mechanical compressor failure will not be indicated by a burned odor. The motor will attempt to run. If you have determined that a mechanical failure has occurred, the compressor must be replaced. Electrical Failure An electrical failure will be indicated by a distinct pungent odor. If a severe burnout has occurred, the oil will be black and acidic.
Maintenance 4. Disconnect all electrical connections. 5. Remove failed compressor. NOTE The optional three-phase scroll compressor must rotate in the correct direction to ensure proper system operation. Wiring must be phased and connected as shown: • PHASE “A” to T1 or Ll •...
36" (914mm) when mounted adjacent to another unit, for component access. For recommended minimum clearances, refer to 2.1.2 - Location Con- siderations. 2-1/4" (58mm) See Table 5 below for dimensions. Table 5 Liebert InteleCool2 dimensions, in. (mm) Dimensions, in. (mm) Model 37-1/8 17-3/4 38-3/4 9-3/8 9-13/32...
Specifications Table 7 Technical data, 60 Hz - Standard ambient condenser, continued Model ET048, ET348 ET060, ET360 Compressor Type Scroll Scroll Net capacity data based on 80°F (26.6°C) DB/67°F (19.4°C) WB indoor ambient - BTUH (kW)* Outdoor ambient Total 47900 (14.0) 56900 (16.7) 85°F (29.4°C)
Specifications Table 9 Technical data, 50 Hz - Standard ambient condenser, continued Model ET047, ET347 ET059, ET359 Compressor type Scroll Scroll Net capacity data based on 26.6°C (80°F) DB/19.4°C (67°F) WB indoor ambient - kW (BTUH)* Outdoor ambient Total 11.8 (40400) 14.2 (48500) 29.4°C (85°F)
Specifications Table 11 Technical data, 60 Hz - High ambient condenser, continued Model ET048, ET348 ET060, ET360 Compressor Type Scroll Scroll Net capacity data based on 80°F (26.6°C) DB/67°F (19.4°C) WB indoor ambient - BTUH (kW)* Outdoor ambient Total 49200 (14.4) 59000 (17.3) 85°F (29.4°C)
Specifications Table 13 Technical data, 50 Hz - High ambient condenser, continued Model ET047, ET347 ET059, ET359 Compressor type Scroll Scroll Net capacity data based on 26.6°C (80°F) DB/19.4°C (67°F) WB indoor ambient - kW (BTUH)* Outdoor ambient Total 12.1 (41400) 14.6 (50000) 29.4°C (85°F)
Troubleshooting ROUBLESHOOTING Table 18 Troubleshooting guide Problem Probable Cause Remedy Unit will not start No power to unit Check voltage to input circuit breaker. Control voltage circuit Locate short and reset breaker. breaker open Shut off by external Check operation of thermostat. thermostat or stat is defective No cooling...
Parts 10.0 P ARTS Table 19 Refrigeration system parts, 1.5 and 2 ton units 1.5 Ton 2 Ton ET017S ET018P ET023S ET023M ET024P ET024Y ET024A Figure Part Name/ 220-240V 208-230V 220-240V 380-415V 208-230V 208-230V 460V Description Part # 1 Ph 50 Hz 1 Ph 60 Hz 1 Ph 50 Hz 3 Ph 50 Hz...
+39 049 9719 111 Fax: +39 049 5841 257 While every precaution has been taken to ensure the accuracy and completeness of this literature, Liebert Corporation assumes no Asia responsibility and disclaims all liability for damages resulting from use of 7/F Dah Sing Financial Centre this information or for any errors or omissions.