Vertiv Liebert 10 User Manual
Liebert® 10 Fan Drycooler/Fluid
Cooler™
Including Quiet-LineModels, 120to150Tons,
50&60Hz
User Manual
Technical Support Site
If you encounter any installation or operational issues with your product, check the pertinent section of
this manual to see if the issue can be resolved by following outlined procedures. Visit
https://www.VertivCo.com/en-us/support/ for additional assistance.
TABLE OF CONTENTS
1 Introduction 1
1.1 System Description and Standard Features 1
1.2 Optional Features 1
2 Product Performance Data & Selection 5
2.1 Standard Data 5
2.2 Typical Application 7
2.3 Engineering Data, Calculations and Selection Procedure 8
2.4 Selection Example 11
3 Installation 13
3.1 Location Considerations 13
3.2 Site Preparation 15
3.3 Equipment Inspection Upon Delivery 16
3.4 Lifting and Handling the Drycooler 16
3.4.1 Unit Weight 17
3.5 Piping Connections 17
3.5.1 Expansion Tanks, Fluid Relief Valves and Other Devices 18
3.6 Filling Instructions 22
3.6.1 Preparing the System for Filling 22
3.6.2 Glycol Solutions 22
3.6.3 Filling the System 23
3.7 Electrical Connections 24
3.7.1 Line Voltage 24
3.7.2 Low Voltage Control Wiring 25
3.8 Checklist for Completing Installation 26
4 Operation 29
4.1 Initial Startup Procedure 29
4.1.1 Control Setpoints 29
4.1.2 Current-Sensing Relays 30
4.1.3 Cold Weather Operation 31
5 System Maintenance 33
5.1 General Procedures 33
5.2 Special Procedures 34
5.2.1 Drycooler Cleaning 34
5.2.2 Maintenance Inspection Checklist 35
6 Troubleshooting 37
Vertiv | Liebert® 10-fan Drycooler User Manual | i
Vertiv | Liebert® 10-fan Drycooler User Manual | ii
Important Safety Instructions - Save These Instructions
This manual contains important safety instructions that should be followed during the installation and
maintenance of the Liebert®10 Fan Drycooler™. Read this manual thoroughly before attempting to install
or operate this unit.
Only properly trained and qualified personnel should move, install or service this equipment.
Adhere to all warnings, cautions and installation, operating and safety instructions on the unit and in this
manual. Follow all operating and user instructions.
WARNING! Arc flash and electric shock hazard. Disconnect all electric power supplies and wear
protective equipment per NFPA 70E before working within electric control enclosure. Failure to
comply can cause serious injury or death.
Customer must provide earth ground to unit, per NEC, CEC and local codes, as applicable.
Before proceeding with installation, read all instructions, verify that all the parts are included
and check the nameplate to be sure the voltage matches available utility power.
The line side of the disconnect switch on the front of the unit contains live high-voltage.
The only way to ensure that there is NO voltage inside the unit is to install and open a remote
disconnect switch. Refer to unit electrical schematic.
Follow all local codes.
WARNING! Risk of high-speed moving parts. Can cause injury or death.
Disconnect all local and remote electric power supplies before working in the unit.
Do not operate this unit with any or all cabinet panels and/or blower guards removed.
CAUTION: Risk of contact with hot surfaces. Can cause injury.
The blower motors may become extremely hot during unit operation. Allow sufficient time for
them to cool before working within the unit cabinet. Use extreme caution and wear protective
gloves and arm protection when working on or near hot blower motors.
CAUTION: Risk of sharp edges, splinters and exposed fasteners. Can cause injury.
Only properly trained and qualified personnel wearing appropriate safety headgear, gloves,
shoes and glasses should attempt to move the unit, lift it, remove packaging or prepare the unit
for installation.
Vertiv | Liebert® 10-fan Drycooler User Manual | iii
NOTICE
NOTICE
NOTICE
Risk of clogged or leaking coolant fluid lines. Can cause equipment and building damage.
Improper installation, application and service practices can result in coolant fluid leakage from
the unit that can result in severe property damage.
Vertiv™ recommends installing leak detection equipment for unit and supply lines.
Risk of a leaking coil due to freezing and/or corrosion. Can cause equipment and building
damage.
Cooling coils and piping systems that are connected to open cooling towers or other open
water/glycol systems are at high risk for freezing and premature corrosion. Fluids in these
systems must contain the proper antifreeze and inhibitors to prevent freezing and premature
coil corrosion. The water or water/glycol solution must be analyzed by a competent water
treatment specialist before startup to establish the inhibitor requirement. The water or
water/glycol solution must be analyzed every six months to determine the pattern of inhibitor
depletion. The complexity of water-caused problems and their correction makes it important to
obtain the advice of a water treatment specialist and follow a regularly scheduled maintenance
program.
Risk of damage from forklift. Can cause unit damage.
NOTICE
Keep tines of the forklift level and at a height suitable to fit below the skid and/or unit to
prevent exterior and/or underside damage.
Risk of improper storage. Can cause unit damage.
Keep the Liebert 10-Fan Drycooler upright and protected from freezing temperatures and
contact damage.
Vertiv | Liebert® 10-fan Drycooler User Manual | iv
1 INTRODUCTION
1.1 System Description and Standard Features
The Liebert® 10 Fan Drycooler/Fluid Cooler™ is designed for maximum heat rejection with minimum
footprint and to be used with glycol solutions for large-site installations. It has a nominal range of 150tons
of heat rejection and is ideal for rejecting the heat of multiple evaporator units. Standard features include:
• Three different coil circuits: 068 (half), 136 (full), 272 (double). Each coil circuit is designed for a
range of specific flow rates based on the particular application.
• Coil constructed of copper tubes in a staggered pattern expanded into continuous corrugated
aluminum fins. The fins have full depth fin collars completely covering the copper tubes which
are connected to heavy-wall type L headers. Inlet coil connector tubes pass through relieved
holes in the tube sheet for maximum resistance to piping strain and vibration. Coil maximum
operating pressure is 150 PSIG (1035 kPa).
• Wire guards constructed of coated wire, in 1" x 4" pattern, mounted to protect the exposed
vertical coil surface.
• Current sensing relays are provided with customer connection to monitor change in motor
current to detect possible motor/fan failure.
• Choice of either 60 or 50Hz models as well as a Liebert Quiet-Line™ 60Hz; comes from the
factory completely assembled and pre-wired. Units are available in 208, 230, 460 and 575V, 3phase, 60Hz, and 380/415V, 3-phase, 50Hz.
• Locking disconnect switch and fan cycling control.
• Unit frame of heavy galvanized steel for strength and corrosion resistance, divided internally
into individual fan sections by full-width baffles to prevent fan reverse windmilling when not
energized.
1.2 Optional Features
Quiet-Line
The Liebert Quiet-Line 10 Fan Drycooler includes the same features as the standard Liebert10 Fan
Drycooler, except that it has 8-pole motors in lieu of 6-pole motors for lower sound levels as well as
reduced airflow and capacity. This option is not available on 50Hz units.
Aluminum Grilles
Aluminum grilles are used for unit aesthetic and general mechanical security purposes. The aluminum
grilles extend from the base of the unit and protect the exposed coil sides.
Coil Fin Options
Pre-Coated Fin Stock provides pre-coated coil fins for added protection in corrosive environments.
Phenolic Coated Coil provides a baked phenolic coated coil for added protection in corrosive
environments.
Copper Fin/Copper Tube Coil provides coil constructed of copper fins and copper tubes.
Vertiv | Liebert® 10-fan Drycooler User Manual | 1
Enclosed Motor Option
TEAO motors are totally enclosed and are used in industrial applications. They are not available for
Liebert Quiet-Line, or 575V models.
Ancillary Items
Tanks for fluid expansion, pumps, pump control panels, flow switches, shut off valves and relief valves
should also be considered for the site/installation. Since these items are custom-sized per application,
please consult with your sales representative for selection.
Vertiv | Liebert® 10-fan Drycooler User Manual | 2
Figure 1.1 Typical application
Vertiv | Liebert® 10-fan Drycooler User Manual | 3
Refer to Typical piping diagram on page19 for a detailed installation diagram.
Vertiv | Liebert® 10-fan Drycooler User Manual | 4
2 PRODUCT PERFORMANCE DATA & SELECTION
2.1 Standard Data
Vertiv | Liebert® 10-fan Drycooler User Manual | 5
6.....Liebert® 10-fan Drycooler User Manual
Shipping
Weight
Internal
Volume
Air Flow Sound
No.ofFans
No. &
Size of
Connec-
tions
(outlet)
No. &
Size of
Connec-
tions
(inlet)
No. of
Internal
Circuits
Pressure
Drop
Flow
Rate
Total Heat
Rejection* @25°F
(13.9°C) ITD
Btu/h kW gpm lps Ft of Water kPa cfm cmh dBA** Gal L Lbs Kg
1,172,000 343 136 8.6 27.2 81.2 68 2@2.625 2@2.625 10 74160 126000 65 92.8 351 5100 2313
1,447,000 424 272 17.2 15.8 47.1 136 2@4.125 2@4.125 10 74160 126000 65 92.8 351 5100 2313
1,579,000 463 544 34.3 15.1 45.1 272 2@4.125 2@4.125 10 74160 126000 65 92.8 351 5100 2313
1,287,000 377 136 8.6 27.3 81.5 68 2@2.625 2@2.625 10 99030 168250 72 92.8 351 5100 2313
1,703,000 499 272 17.2 1 5.8 4 7.1 136 2@4.125 2@4.125 10 99030 168250 72 92.8 351 5100 2313
1,924,000 564 544 34.3 15.1 45.1 272 2@4.125 2@4.125 10 99030 168250 72 92.8 351 5100 2313
1,218,000 357 136 8.6 27.3 81.5 68 2@2.625 2@2.625 10 82450 1 40080 68 92.8 351 5100 2313
1,541 ,000 452 272 17.2 15.8 47.1 136 2@4.125 2@4.125 10 82450 140080 68 92.8 351 5100 2313
1,703,000 499 544 34.3 15.1 45.1 272 2@4.125 2@4.125 10 82450 1 40080 68 92.8 351 5100 2313
Hz
Model
Table 2.1 Drycooler Performance Data
No.
120 60
150 60
150 50
* Ratings based on using 40% ethylene glycol @ 95°F (35°C) entering air, 120°F (48.9°C) enteringglycol; 2 gpm (.13 l/s) circ.
** Sounddata is for sound pres sure measured @ 5 ft. (1.5m) height, 30 ft.(9.1 m) from the unit.
Table 2.2 Drycooler Performance Data per Circuit
Model Hz
120 60
150 60
150 50
* Data is based on 4 0% ethylene glycol solutionat 1 15°F ( 46.1° C) average solution temperature expressed inBtu/h.
No. of
Internal
Circuits
68 68-136 29,507 39,991 46,972 8.2 16.1 27.3
136 136-34 0 45,829 53,713 57,917 5 9.2 23.7
272 272-544 56,201 60,785 63,153 4 8.7 15.1
68 68-136 30,144 42,440 51,621 8.2 16.1 27.3
136 136-34 0 50,346 61,660 68,219 5 9.2 23.7
272 272-544 65,785 73,11 8 77,019 4 8.7 15.1
68 68-136 29,791 41,011 4 8,823 8.2 16.1 27.3
136 136-34 0 47,617 56,724 61,728 5 9.2 23.7
272 272-544 59,756 65,257 68,146 4 8.7 15.1
Flow Rate Range
min-max
gpm
Heat Rejection per ITD* (Btu/h/°F) Pressure Drop* (ft of water)
Flow Rate per Circuit (gpm/circuit) Flow Rate per Circuit (gpm/circuit)
1 1.5 2 1 1.5 2
Table 2.3 Drycooler Performance Data per Circuit—Metric
Heat Rejection per ITD* (kW/°C) Pressure Drop* (kPa)
Model
No.
Hz
No. of
Internal
Circuits
Flow Rate
Range min-max
lps
Flow Rate per Circuit (lps/circuit) Flow Rate per Circuit (lps/circuit)
0.06 0.09 0.13 0.06 0.09 0.13
68 6-13 23.9 29.8 32.1 24.5 48.0 81.5
120 60
150 60
150 50
* Data is based on 4 0% ethylene glycol solutionat 4 6.1°C (115°F) average solution temperature expressed inkW.
136 13-26 30.8 31.9 32.0 14.9 27.5 70.7
272 26-38 30.7 30.6 30.5 11.9 26.0 45.1
68 6-13 24.9 33.1 37.5 24 .5 48.0 81.5
136 13-26 36.0 39.1 39.8 14.9 27.5 70.7
272 26-38 37.9 38.4 39.0 11.9 26.0 4 5.1
68 6-13 24.4 31.1 34.2 24.5 48.0 81.5
136 13-26 32.8 34.6 34.7 14.9 27.5 70.7
272 26-38 33.3 33.4 33.3 11.9 26.0 45.1
2.2 Typical Application
The most popular use for the Liebert® 10 Fan Drycooler™ is at sites with large cooling loads, such as data
center/telecom sites where multiple indoor air conditioners are used. See 2.2 abovefor a general outline of
suggested quantity of indoor units for each Liebert 10 Fan Drycooler or contact your Vertiv™
representative for custom matchup. See Typical application on page3.
Vertiv | Liebert® 10-fan Drycooler User Manual | 7
Table 2.4 Maximum Liebert evaporator units per Every 10 Fan Drycooler
Liebert Deluxe
Model 60 Hz
(50 Hz)
110 G
(111 G)
116 G
(121 G)
192 G
240 G
363 G
1. Ratings based on using40% ethylene glycol @ listed outdoor ambient rating temperature, 120°F (48.9°C) entering glycol. Selections are validfor
standard or TEAO motors. Consult your localLiebert representative for Quiet-Line selections.
Liebert
Deluxe
Unit
Capacity
8 tons
(28.1 kW)
10 tons
(35.2 kW)
15 tons
(52.7 kW)
20 tons
(70.3 kW)
30 tons
(105 kW)
Maximum
Deluxe
Units/10 Fan
Drycooler
12 95°F (35°C) 384 (24.2) D*N*150**272
9 100°F ( 37.8°C) 288 (18.2)
6 105°F (40.6°C) 192 (12.1)
10 95°F (35°C) 380 (24.0) D*N*150** 272
7 100°F (37.8°C) 266 (16.8)
5 105°F (40.6°C) 190 (12.0)
7 95°F (35°C) 378 (23.8) D*N*150**272
5 100°F (37.8°C) 270 (17.0)
4 105°F (40.6°C) 216 (13.6)
6 95°F (35°C) 402 (25.4) D*N*150* *272
4 100°F (37.8°C) 268 ( 16.9)
3 105°F (40.6°C) 201 (12.7)
4 95°F (35°C) 31 2 (19.7) D*N*150**272
3 100°F (37.8°C) 234 (14.8)
2 105°F (40.6°C) 156 (9.8)
Outdoor
Ambient
Rating
Total Syst em
gpm (lps)
Drycooler
Model #
D*N*150* *136
D*N*150* *136
D*N*150* *136
D*N*150* *136
D*N*150* *136
1
2.3 Engineering Data, Calculations and Selection Procedure
An alternate, detailed procedure is available to calculate values and select the correct the 10 Fan
Drycooler(s) for the application. This can be used to assist in selecting drycoolers for applications for
ambient conditions that are not standard. Use the following steps.
1. Determine the following items to begin this procedure:
• Design outdoor ambient air temperature, Toa(F or C)
• Fluid Flow Rate, VT(gpm or lps)
• % ethylene glycol concentration
• Fluid temperatures at drycooler: Entering, Tefand leaving Tlf(F or C), or
• Total Required Heat Rejection, QRT(Btu/h or kW) and one of the fluid temperatures
above
2. Find the following values using these equations and known values above:
• Initial Temperature Difference (ITD) of entering fluid to outdoor design air,
ITD = Tef- T
• Total Required Heat Rejection, QRT= VT* cv* (Tef- Tlf), where cvis found in the following
table, or
• Leaving fluid temperature, Tlf= Tef- QRT/ (VT* cv) where cvis found in the following
table.
3. Find the Average Fluid Temperature, T
oa
= (Tef+ Tlf) / 2
f,avg
Vertiv | Liebert® 10-fan Drycooler User Manual | 8
Loading...