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724-746-5500 | blackbox.com
Page 10
Chapter 1: Introduction
1. Introduction
1.1 General
The Cold Row precision data center air-conditioning system covered by this manual uses the latest, state-of-the-art control
technology. It uses the finest materials available in the industry. The unit will provide years of trouble-free service if installed and
maintained in accordance with this manual. Damage to the unit from improper installation, operation, or maintenance is not cov-
ered by the warranty.
STUDY the instructions contained in this manual. They must be followed to avoid difficulties. Spare parts are available from
Black Box to ensure continuous operation. Using substitute parts or bypassing electrical or refrigeration components to continue
operation is not recommended and will VOID THE WARRANTY. Because of technical advancements, components are subject to
change without notice.
All Cold Row systems are designed to be installed indoors.
1.2 Product Description
Cold Row systems are available in water-cooled, water/glycol-cooled or air-cooled direct expansion (DX) configurations. DX-based
Cold Row systems are designed to operate with R410A refrigerant.
Table 1-1. Available models.
Product Code Product Name
CRDX-A-FS-24KW Cold Row DX, Air
CRDX-A-FS-12KW Cold Row DX, Air
CRDX-G-FS-24KW Cold Row DX, Glycol
CRDX-G-FS-12KW Cold Row DX, Glycol
CRDX-W-FS-24KW Cold Row DX, Water
CRDX-W-FS-12KW Cold Row DX, Water
DX-based Cold Row cabinets are 12" wide. The cooling capacity in KW/Hr will depend on the compressor size. Refer to the unit
nameplate to identify the capacity of your system.
NOTE: Cold Row systems capture and neutralize heat within close-coupled, rack-based environments. Any use beyond what is
described in this manual is deemed to be not intended. Black Box is not liable for any damage resulting from improper use.
The functional modes of operation are cooling and dehumidification, which provides localized cooling to offset hot spots in data
centers.
The Cold Row system captures high-temperature (hot aisle) discharge air from adjacent rack-based IT equipment and reintroduces
it as conditioned air through the front of the unit (cold aisle).
The system is equipped with highly reliable Electronically Commutated (EC) fans that offer considerable energy cost savings and
long life. Using an electronically commutated permanent magnet DC motor eliminates AC inverter whine. Fan speed is
continuously adjustable via a signal from the system controller without the use of VFDs. EC fans offer energy-efficient, quiet,
low-vibration operation.
An advanced E2 series microprocessor controller is mounted inside the Cold Row electric box. The controller provides the
following features: input/output monitoring status, full integrated control of cooling and dehumidification, multi-unit control, and
remote communication with a Building Management System (BMS). The controller may interface directly to a BMS, so you can
monitor the performance of the air conditioner and adjust operating parameters.
The E2 user interface display panel is typically factory mounted on the front access panel of the unit.