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© STULZ USA – All rights reserved QEWR002G
CYBERROW DX ENGINEERING MANUAL
STULZ CyberRow
12 - 33 kW Row-Based
Precision Control Air Conditioners
Direct Expansion - Air, Water, Glycol
SUMMARY
This specifi
cation 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
fl oor space. The supplied system shall be provided with ETL
Certifi cation. 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 fl oors. The air handling system shall be specifi cally 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
fi nish to provide durability, and to protect from corrosion.
Armafl ex elastomeric thermal insulation shall be used to
insulate the cabinet, dampen 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 airfl ow pattern. An optional plenum with a front
diverted discharge pattern is available.
AIR FILTRATION
All units shall be equipped with removable, washable
fi lters. These fi lters 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.
PRODUCT
GUIDE SPE
CIFIC
A
TIONS