Specifications

990-4617 InRow™ Direct Expansion Air Conditioners Technical Specifications 59
1.4 QUALITY ASSURANCE
A. The system shall be completely factory-tested prior to shipment. Testing shall include, but not be
limited to: complete pressure and leak testing to ensure system integrity, “Hi-Pot” test, and controls
calibration and settings. Each system shall ship with a completed test report to verify completion of
factory testing procedure. The system shall be NTRL listed, MCA, and electrical system shall be UL
Listed to UL 1995 and CSA 22.2 No. 236.
PART 2 — PRODUCT
2.1 STANDARD COMPONENTS
A. CABINET CONSTRUCTION
1. Exterior panels shall be 18 gauge steel with 5 lb/ft3 (80 kg/m3) density foam insulation. Insulation
complies with UL94-5VA ASTM E84 flame spread and smoke developed rating of 25/50. Front
and rear exterior panels shall be 18 gauge perforated steel with 69.5% 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. FANS
1. Variable speed direct drive mixed flow DC fan assembly (ACRD100 and ACRD200 series):
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 six 200 mm mixed flow direct drive DC axial
fans. Each fan assembly should be designed to provide 180.1 l/s (381.7 CFM) for total unit
airflow of 1080.76 l/s (2290 CFM). The ACRD500/ACRP100 series includes two fans. Each
fan provides 1085.5 l/s (2300 CFM) for a total unit airflow of 2171 l/s (4600 CFM).
b. Variable speed fans: Fans shall be variable speed capable of modulating from 30-100%. Fans
shall soft start to minimize in-rush current.
c. Fan protection: Each fan assembly shall consist of a plastic injection molded bezel with
integral fan discharge finger guard. Inlet of the fan should include a cage type finger guard.
d. Operation and service: The unit should be capable of operation in the event of a fan failure.
Fans shall be replaceable while the unit is in operation.
2. Variable speed fan assembly (ACRD500/ACRP100 series):
a. Variable speed fans: The unit is equipped with two variable speed, electronically commutated,
400-mm backward incline fans complete with inlet volute.
b. Fan protection: discharge finger guard. Outlet of the fan should include a cage type finger
guard.
c. Operation and service: The unit should be capable of operation in the event of a fan failure.