Specifications

990-4618C-001 InRow Chilled Water Air Conditioners Technical Specifications 87
PART 2 — PRODUCT
2.1 STANDARD COMPONENTS
A. CABINET CONSTRUCTION
1. Exterior panels shall be 18 gauge steel with 5 lb/ft
3
(80 kg/m
3
) density foam insulation. Insulation
complies with UL94 HF-1. Front and rear exterior panels shall be 18 gauge perforated steel with
80% open free area, and equipped with a keyed lock to provide a means of securing access to the
internal components of the unit.
2. The frame shall be constructed of 16 gauge formed steel welded for maximum strength. All units
shall provide maintenance from the front and rear, allowing units to be placed within a row of
racks.
3. All exterior panels and frame shall be powder coated for durability and attractive finish. Exterior
frame and panel color shall have color values: L = 74.50, a = -.53, b = +8.20.
4. Units shall include casters and leveling feet to allow ease of installation in the row and provide a
means to level the equipment with adjacent IT racks.
B. VARIABLE SPEED FAN ASSEMBLY
1. ACRC301S/ACRC301H fans
a. The unit shall be configured for draw-through air pattern to provide uniform air flow over the
entire face of the coil. Each unit shall include eight 200-mm mixed flow direct drive DC axial
fans. Each fan assembly should be designed to provide 188.8 l/s (400 CFM) for total unit
airflow of 1510.2 l/s (3200 CFM) for ACRC301S. Each fan assembly should be designed to
provide 247.8 l/s (525 CFM) for total unit airflow of 1982.1 l/s (4200 CFM) for ACRC301H.
2. ACRC500/ACRP500 series fans
a. The unit shall be configured for draw-through air pattern to provide uniform air flow over the
entire face of the coil. The unit is equipped with variable speed, electrically commutated, 400-
mm, backward incline fans complete with Inlet Volute. Each fan assembly should be designed
to provide 1085.6 l/s (2300 CFM) for total unit airflow of 3256.8 l/s (6900 CFM) without
filters. Total CFM with standard filter is 2832 l/s (6000 CFM).
3. Variable Speed Fans
a. Fans shall be variable speed capable of modulating from 30-100%. For ACRC500/ACRP500
series units, fans shall soft start to minimize in-rush current when starting.
4. Fan Protection
a. Each fan assembly of ACRC301S and ACRC500/ACRP500 series shall consist of a plastic
injection molded bezel with integral fan discharge finger guard. Each fan of ACRC301H
assembly shall consist of a fan duct with integral fan discharge finger guard. Inlet of all fans
shall include a cage type finger guard.
5. Operation and Service
a. The unit should be capable of operation in the event of a fan failure. ACRC301H units feature
a handlebar on the front housing to provide an easy grip in the event of replacement.
6. Passive Noise Control (ACRC301H only)
a. Each fan assembly features a housing with foam lining to provide passive noise control.