15
DX System
STULZ CyberRow
12 - 33 kW Row-Based
Precision Control Air Conditioners
Direct Expansion - Air, Water, Glycol
SUMMARY
This specification describes requirements for a precision
environmental control system. The STULZ CyberRow is a row-based
cooling system that shall provide precision temperature control
for computer rooms, or rooms containing telecommunications
or other highly sensitive heat load equipment, where continuous
24 hours a day 365 days a year air conditioning is required.
Designed with both front and rear access, CyberRow systems
require minimum floor space. The supplied system shall be
provided with ETL Certification. The CyberRow model number
shall be, CRS - _ _ _ - _ .
DESIGN REQUIREMENTS
The environmental control system shall be a STULZ CyberRow
Direct Expansion (DX) factory-assembled unit. The unit shall be
designed for a row-based installation with removable front and
rear access panels. No allowance for side service access shall
be required, however removable side access panels shall be
provided for additional access.
CyberRow units are especially adapted for both raised and
non-raised floors. The air handling system shall be specifically
designed for high sensible heat ratio. Each system shall be
capable of handling ___CFM. The unit shall have the cooling
capacity of ___BTU/H, and the sensible cooling capacity of ___
BTU/H based on entering air condition of ___°F dry bulb and
___°F (°C) wet bulb. The main fan motors shall be ___HP. The
unit shall have a power supply of ___volts.
QUALITY ASSURANCE
The manufacturer shall maintain a set of international standards
of quality management to ensure product quality. Each system
shall be subjected to a complete operational and functional test
procedure at the factory prior to shipment.
CABINET
Side access panels shall be fabricated from 20 gauge
galvannealed steel and shall be securely bolted to a
14 gauge base and the top plate. The top plate, front
and rear panels shall be fabricated from 16 gauge
galvannealed steel. The cabinet shall be powder coated
with a satin black finish to provide durability, and to
protect from corrosion. Armaflex elastomeric thermal
insulation shall be used to insulate the cabinet, block
noise and prevent damage from vibration. Casters and
leveling feet shall be included to ease the installation
and level the equipment with existing IT solutions.
AIRFLOW PATTERNS
All units shall be designed using a front discharge with
a rear return airflow pattern. An optional plenum with a
front diverted discharge pattern is available.
AIR FILTRATION
All units shall be equipped with removable, washable
filters. These filters shall consist of an open cell
structured polyurethane foam with a roll formed 3000
series aluminum frame. Filters shall meet both UL 900
and UL 94 HF-1 standards.
MECHANICAL COMPONENTS
BACKWARD INCLINED, PLENUM STYLE
FAN, WITH AN EC MOTOR
The blowers shall be backward inclined plenum style
fans with an Electronically Commutated (EC) motor,
for maintenance free operation. The motor shall
include: integrated electronic control board and direct
microprocessor control signaling for fan speed control,
soft-starting capabilities, and integrated current
limitations. Each fan shall be low noise, low vibration
manufactured with an anti-corrosive aluminum impeller.
Each fan impeller shall be dynamically and statically
balanced in two planes to minimize vibration during
operation.
REFRIGERATION SYSTEM
All piping and components contained within the
refrigeration system shall be rated for use with R410A
PRODUCT GUIDE SPECIFICA
TIONS
