Specifications

8 InRow Chilled Water Air Conditioners Technical Specifications 990-4618C-001
Standard Features and Options
Standard features
Insulated side panels The frame is constructed of 16 gauge formed steel for maximum
strength. Cabinet is serviceable from the front and rear. All exterior
panels and corner posts on the frame are powder coated for
durability and an attractive finish. Front and rear exterior panels are
constructed of 18 gauge perforated steel with 84% open free area.
Insulation is 80.1 kg/m
3
(5 lb/ft
3
) density and complies with ASTM
E84 rating of 25/50. All panels, which include a key latch for
safety and security, allow easy access and removal.
Variable speed fans Each unit is equipped with variable speed fans. In order to provide
uniform airflow over the cooling coil, the fans provide a draw-
through air pattern. Quiet, low maintenance, and producing very
low vibration, fans are controlled through a signal from the
microprocessor controller that constantly adjusts airflow to match
the heat load in the Data Center without need for VFD (Variable
Frequency Drive). In ACRC301S and ACRC301H units, the fans
are easily replaceable while the unit is in operation.
Shutdown input/alarm output The unit provides one field connection input for remote shutdown
and four field connections for an alarm output.
Chilled water flow meter An internal flow meter is integrated with the microprocessor
controller to display the chilled water flow rate of the unit.
2-way/3-way valve A fully modulating valve is microprocessor-controlled to regulate
the amount of chilled water into the cooling coil to maintain
optimal cooling conditions. The standard valve pressure rating is
2068 kPa (300 PSI). The valve is user configurable to be two-way
or three-way
Fan power supply
(ACRC301 series only)
The unit includes two fan power supplies, each capable of running
ACRC301S and ACRC301H units at fan speeds of 75% in the
event of a single power supply failure.
Primary/secondary power feeds The system features two power feeds. This allows a level of system
fault tolerance and uninterruptible cooling. Each feed powers
100% of the unit.
Cross circuited cooling coil Designed for high sensible heat ratios, the coil is constructed with
copper tubes, aluminum fins, and galvanized steel end plates.
Washable filter The filtration of conditioned air is extremely vital to maintaining
the clean, particle-free environment required by electrical
equipment. The system uses a <20% efficiency ASHRAE 52.1,
12.7 mm (1/2 in.) washable filter that meets HF-1 standards for
electronics (MERV 1 per ASHRAE 52.2).