Tripp Lite SRCOOL3KTP User manual

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Owner’s Manual
Top-of-Rack Precision
Air Conditioning System
DX Air-Cooled, ~9U, Self-Contained, 60 Hz, UL
Model: SRCOOL3KTP
(Series Number: AG-054D)
1111 W. 35th Street, Chicago, IL 60609 USA • tripplite.com/support
Copyright © 2022 Tripp Lite. All rights reserved.
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Español 25 • Français 49

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1. Important Safety Information 3
1.1 Handling Information 4
2. Introduction 5
3. General Information 6
3.1 External Features 6
3.2 Physical 7
3.3 Environment 8
3.4 Unpacking 8
4. Installation 9
4.1 Installing the Unit on a Rack 10
4.2 LCD Screen Mounting 10
(SR25UBAC or SR33UBAC
Models Only)
4.3 Electrical Installation 12
4.4 Communications 13
4.5 Condensate Drainage 14
5. Operation 15
5.1 Start Up 15
5.2 Homepage 16
5.3 Settings 17
5.4 Maintenance Mode 18
5.5 Data Menu 19
5.6 Graphs Menu 20
5.7 Alarm Menu 20
6. Maintenance 21
7. Troubleshooting 22
8. Optional Accessories 23
9. Warranty and 24
Product Registration
Table Of Contents

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1. Important Safety Information
Only those who are properly trained or qualified to use this appliance should do so. Anyone who is not trained or qualified
should not use this device unless it is under the supervision of someone who is properly trained or qualified to do so. Children
must be supervised to ensure that they do not use the appliance as a toy. This appliance is classified as APPLIANCE NOT
ACCESSIBLE TO THE GENERAL PUBLIC. If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard. The appliance should be installed in accordance with national
wiring regulations GWP for R410A (R32/125: 50/50): 2087.5. An all-pole disconnection device which has at least 3 mm
separation distance in all pole and a residual current device (RCD) with the rating of above 10mA shall be incorporated in the
fixed wiring according to the national rule.
Explanation of Symbols
The following symbols illustrate messages to warn of potential danger and need for caution and attention.
This symbol indicates that with failure to comply with the instructions, there will be a risk of electric shock resulting in
injury, as noted in the “DANGER” or “WARNING” safety labels.
This is a safety alert symbol used to warn of potential personal injury hazards. Follow all safety information to avoid
personal injury or death that may arise.
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
SAVE THESE INSTRUCTIONS
Prior to installation, operation, maintenance, or servicing of this equipment, read this manual thoroughly.
Keep in mind the following symbols that may appear so as to warn of potential danger or attention.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, can result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, can result in minor or moderate injury.
NOTICE
NOTICE addresses practices not related to physical injury including certain environmental hazards, potential
damage or loss of data.

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1. Important Safety Information
WARNING
Hazard from moving parts
• Keep hands, clothing and jewelry away from moving parts. Check the equipment for foreign objects before
closing the doors and starting the equipment.
Failure to observe this warning may result in death or serious injury.
CAUTION
Hazard to equipment or personnel
• All work must be performed only by qualified personnel.
Failure to observe this warning may result in death or serious injury.
WARNING
Hazard of equipment falling over
• Always use two or more persons to move or turn this equipment.
Failure to observe this warning may result in serious injury or equipment damage.
CAUTION
Hazard to equipment or personnel
• Make sure no spare parts or tools are in the equipment before handling the equipment.
Failure to observe this warning may result in serious injury or equipment damage.
CAUTION
Refrigerant high pressure and hazard to equipment
• This unit operates under high pressure. Observe proper safety precautions when operation or servicing the unit.
• The equipment is to be charged with R-410A only.
Failure to observe this warning may result in serious injury or equipment damage.
1.1 Handling Information
Read handling information prior to installing, operating, servicing or maintaining the equipment. Comply with local regulations
and laws when handling refrigerant.
DANGER
Hazard of electric shock, explosion or arc flash
• Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices.
• This equipment must be installed and serviced by qualified personnel only.
• Comply with all local and national wiring and safety regulations applicable where unit will be installed.
• Turn off all power supplying this equipment before working on or inside of the equipment.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors and covers before turning on power to this equipment.
Failure to observe this warning may result in death or serious injury.

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2. Introduction
The SRCOOL3KTP Top-of-Rack Air Conditioning Systems are precision, self-contained, DX air-cooled systems.
These systems do not require piping from indoor to outdoor, nor do they require any special cooling infrastructure (an optional
duct is available to supplement smaller environments). As a result, these dedicated cooling systems’ design enables them to
operate independently of the building’s HVAC/comfort cooling system.
For safety and protection, the cooler includes internal leak detection to prevent condensate from entering the rack below by
turning off the cooling system.
The unit arrives ready for use and does NOT require charging with refrigerant.
Notes:
• These are cooling-only devices with no heating capability.
• For maximum efficiency, the AC unit is intended for use with Tripp Lite SR25UBAC and SR33UBAC racks, but can be used with other racks
as well.
• The AC unit requires at least 2U of open space in the uppermost U spaces for proper air clearance.
• The system design is for edge environments and network closets. It is not designed for harsh or dirty environments.
• For maximum cooling performance, ensure all U spaces without equipment have blanking panels installed.

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3.1 External Features
3. General Information
3
5
1
2
4
1Condenser fan
2Condenser
3Front panel
4Nameplate
5Emergency airflow access panel

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3.2 Physical
3. General Information
Net weight – lb. (kg) 160 (73)
Shipping weight – lb. (kg) 192 (87)
Figure 3-3: Rear
Figure 3-5: Top
Figure 3-2: Front
Figure 3-4: Bottom
Figure 3-6: Side

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3. General Information
3.3 Environment
Maximum Operating Temperature
• Inside rack: up to 100°F (37°C)
• Outside rack: up to 95°F (35°C)*
* Cooling performance will be reduced if the outside rack temperature reaches 95~113°F (35 ~ 45°C).
If the outside rack temperature is greater than 113°F (45°C), the system will go into protection mode (standby).
Performance-Rated Conditions
• Inside rack: 64.0-98.6°F (17.7~37°C), 20%~80%
• Outside rack: 55.4-95°F (13~35°C)
Minimum/maximum air temperature cooling mode test conducted at:
• Min: inside rack 55°F (12.8°C), outside rack 46.4°F (8°C)
• Max: inside rack 116.6°F (47°C), outside rack 113°F (45 °C)
3.4 Unpacking
Use care when unpacking the unit. The unit should be placed on its pallet as close to the final installation location as possible
to minimize having to move the unit at a later time.

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4. Installation
The SRCOOL3KTP is designed to work in conjunction with Tripp Lite’s SR25UBAC or SR33UBAC rack enclosures, but it can also
be used with any standard rack with an open top to deliver precision cooling to installed equipment.
When installing the SRCOOL3KTP on a non-Tripp Lite rack, please consider the following:
• The amount of space available near the top of the rack. The SRCOOL3KTP requires that the first 4U of space below the
cooler is open for proper air flow.
• Access to the electrical connections for power and the connector for the display needs to be provided.
• The spacing for the mounting holes to secure the SRCOOL3KTP is fixed and should not be modified. If the
mounting holes do not work with the rack, consider replacing the rack with a SR25UBAC or SR33UBAC.
• Due to the weight of the SRCOOL3KTP, it is not recommended to install the unit on a rack that exceeds 33U in
height.
• A mount for the display used for the SRCOOL3KTP is not provided. It is upon the discretion of the end user to
determine a mounting means suitable for the rack in use. Alternately, the SRCOOL3KTPDISBKT accessory can be used to
mount the display to most rack doors, both vented and non-vented.
• The SRCOOL3KTP is supplied with 4 M8-20 mm bolts, lock washers and flat washers to secure the unit to the top
of the rack. Only the provided hardware and mounting locations should be used. For reference, the mounting pattern is:
19.13 in. / 486 mm
37.26 in. / 946 mm

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4. Installation
4.1 Installing the Unit on a Rack
Using a platform jack or forklift capable of reaching a parallel height with the rack, lift the unit next to the rack. Carefully slide
the unit onto the top of the rack. To access the mounting holes, remove the rear cover and front cover of the unit. Using the
supplied hardware, bolt the unit into place on the top of the rack.
Figure 4-1: Install AC unit to rack (SR25UBAC rack shown.)
4.2 LCD Screen Mounting (SR25UBAC or SR33UBAC Models Only)
An opening for the LCD display is provided in the door of the SR25UBAC and SR33UBAC rack enclosures.
To install the LCD:
• Place the LCD screen into the metal bezel to protect the glass edge of the LCD.
• Place the LCD screen into the opening in the rack door.
• Place the supplied fasteners into the slots only into the top two slots of the LCD panel.
• Hand tighten the screws until they make contact with the door.
• Torque the screws to 5 inch pounds (0.56 N-m). Do not exceed 6.17 inch pounds (0.7 N-m), or the glass may crack.
Note: The bottom two screws are
not used.

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4. Installation
Cable routing guides are provided in the upper frame of the rack. Route the cable through the openings in for the following
order:
1. Display data cable (DB9 connector)
2. Display power cable (green three-pin connector)
The routing locations are shown with side panel removed in the diagram below:
Rear of LCD display:
Note: A loop of each cable needs to remain near to the door hinge in order to allow the door to open easily and not stress the cables.
Additional cable can be bundled and secured to attachments on the rear of the door with zipties (not included).
3
4
1
2
1USB Slave (Not Used)
2USB Host
(For Service Only)
3Power Input Terminal
4COM 1
(Used for
Display Data
Cable)
5LAN Port (Not Used)
5

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4. Installation
4.3 Electrical Installation
Notes:
• All electrical connections should be performed by a qualified electrician and in compliance with all local codes and regulations.
• Disconnect power at the source prior to making electrical connections.
• Cable size should meet the electrical requirements.
Voltage 208V
Phase 1Ph
Frequency 60 Hz
MCA 17A
MOP 20A
1Power cable port inlet
2Power connection terminals (remove cover)
2
1
PE L2 L1
Main Power
Details of Terminals

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4. Installation
4.4 Communications
1Network card RJ45 Port
2Modbus TCP Port
3Terminals for Display Data,
Display Power and
SRCOOLTMVENT* Power
4Power Cable Port
* Cable Not Included
3 1 2 4
VENT Display
_ + PE _+ B A 1 2 4

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4.5 Condensate Drainage
The AC unit uses an evaporative condensate system. Any condensate that forms will re-evaporate into the surrounding air and
as such, does not require connection to a drain.
Figure 6-1: Re-evaporator
For safety and protection, the cooler includes internal leak detection to prevent condensate from entering the rack below by
turning off the cooling system and if equipped, activating the emergency ventilation system.
Optionally, you may configure the cooler with a drain tube for manual condensate removal. For this method, ensure the tube
has access to a nearby water drain.
Figure 6-2: Water drain port
• The optional drain tubing (included) diameter is 3/8” (10 mm) ID and 9.8 in. (250 mm) long.
• Pitch the discharge piping down and away from the cooler at a decline of 1 in. per 10 ft. (10 mm per 1 m).
• Ensure not to expose the drain tube to freezing temperatures.
• Perform a test with water to ensure the drainage system is working properly.
Evaporating water system
4. Installation

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5. Operation
5.1 Start Up
Review the installation instructions and check the items below:
• Visual safety inspection
• Service clearances checked
• All accessories installed
Review the electrical wiring and connections and ensure they are safe, installed properly and compliant to code:
• Input power is within range of nameplate
• Circuit breaker/fuse sizes
Check proper sizing and installation (including hangers and supports) of the refrigerant piping. Check for missing panels or
other items and ensure professional appearance for the customer:
• The optional condensate drain line routed properly
Turn on the cooler via On/Off button on the home screen (home page).
Wait approximately 20 minutes for the unit to stabilize to the operating environment. Then access the Data and Graphs
screens above to observe and record the following:
• Cooling is active and compressor engages (y/n)
• Sub-cooling data
• Low pressure
• High pressure
• Evap temp
• Condensing temp
This information is helpful should there be a need for troubleshooting.

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5. Operation
5.2 Homepage
The homepage menu shows digital input data and digital output data.
• Supply Air Temp: The current temperature of the discharge air.
• Humidity: The current relative humidity of the return air.
• Dehumidification: The status of the dehumidification system. It will display “ON” when the return air humidity
exceeds the humidity setting + the humidity band.
• Fan: The current total fan speed expressed as a percent of max cumulative airflow.
Note: If max fan speed is set to 80% for example, the home screen will only show up to 80%.
• Compressor Speed: The current speed of the compressor as a percent based on system demand.
• Maintenance Mode: The control button to toggle Maintenance Mode (must be enabled in user settings).
Refer to Maintenance Mode section for more information.
• Unit Cooler On/Off: The control button to turn the AC unit on or off.
• Unit Status: The current cooling status of the AC unit, specifically whether the compressor is engaged.
The AC unit status is on when the compressor is running and in standby when the compressor is off.
Note: When in standby, the fans may still rotate to circulate air.
• Language: The language selection for the user interface.

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5. Operation
5.3 Settings
The default password for User 1 is: 4321
Setting Description Notes
Temp Setting The desired temperature of the discharge air. If setting the control mode to Return Air,
this setting becomes "Return Air Temp."
Humidity Setting The target relative humidity of the dehumidification
system.
The cooler cannot add humidity to the air.
High Temp Alarm Band If the discharge temperature goes below this value, an
alarm is triggered.
If setting Control Mode to Return Air, you
MUST ADJUST this setting to be based off
of the return air temperature instead.
High Humid Alarm
Band
If the return air humidity exceeds the humidity setting
+ the high humid band setting, an alarm is triggered.
For example, if the user humidity setting is 50% and
the user wants the high humidity alarm to trigger
at 80% RH, set this to 30%. If dehumidification
mode is enabled, a high-humidity alarm will engage
dehumidification mode.
Restart Delay Time Restart delay after restoring power. If power is lost,
the cooler will automatically restart after this delay
time.
Control Mode: Supply
Air (Default)
The cooling control strategy will be based off
the temperature of the discharge air. Return air:
The cooling control strategy will be based off the
temperature of the entering air.
If the load is lower than 30% of rated
cooling capacity, which may cause
frequent cooler on/off cycling, it is
recommended to set Control Mode to
"Return Air." Otherwise, set Control Mode
to "Supply Air."
Enable Maintenance Allows the ability to engage Maintenance Mode from
the homepage.
This allows Maintenance Mode to be
engaged from the homepage without a
password.

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5. Operation
Setting Description Notes
Temp Control Band It is recommended to leave this at the default setting
of 5.4°F (3.0°C), except for low-load situations. If
the IT load is less than the cooler minimum capacity
or if the IT load changes often, set a higher band to
keep the rack temperature stable. A higher band can
help reduce the number of compressor on/off cycles.
For this, the recommended setting is 5.4° to 10°F
(3° to 6°C). If the IT load is greater than the AC unit's
minimum capacity or if the IT load is stable, consider
setting the band to its default or lower to optimize
temperature precision. Recommended setting: 3.6° to
5.4°F (2° to 3°C).
Upper Humid Control
Band
The allowable range above the humidity setting. For
example, a delta of 20% RH at a humidity setting
of 50% RH would mean the dehumidification cycle
would initiate when the humidity rises above 70% RH.
Low Temp Alarm Band If the discharge temperature falls below this value, an
alarm is triggered.
If setting Control Mode to Return Air, you
MUST ADJUST this setting to be based off
of the return air temperature instead.
Maintenance Running
Time
Maintenance Mode duration. If the user does not turn
off Maintenance Mode from the home screen, the AC
unit will automatically revert to normal operation after
this time.
Date and Time Date: yyyy/mm/dd
Time: 24-hour hh/mm/ss
Password Allows user to change password.
5.4 Maintenance Mode
From the home screen, click the Maintenance Mode on/off button. Maintenance Mode temporarily adjusts the cooling output
to 100% to help quickly exhaust heat from the rack to make it more comfortable when servicing IT equipment. No password is
required. The system returns to Auto Mode after 30 minutes. Disable Maintenance Mode in the control menu if the user wants
to prevent use of this feature.

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5. Operation
5.5 Data Menu
The data menu enables users and technicians to monitor advanced parameters (read only).

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5. Operation
5.6 Graphs Menu
The graphs menu enables users or technicians to view historical trends of the following data points:
• Supply temperature
• Return temperature
• Humidity
• Low (suction) pressure
• High (discharge) pressure
5.7 Alarm Menu
Alarms generated log into the alarm menu. They also display in a scrolling banner across the top of the home screen.
Resolved and/or cleared
alarms will be cleared
from the current alarm
menu and logged into
the alarm history (e.g.,
a high temperature was
detected, but has since
dissipated).
Significant alarms
such as high-pressure
detection or leak
detection will suspend
cooling operation until
the alarm is resolved.
For this, we recommend
setting up group control.