APC InfraStruXure InRow RC Service Manual download pdf (Page 7)

4 APC InRow SC Technical Data Manual

Standard Features

Variable Speed

Direct Drive

Tubeaxial Fans

Each unit is

equipped with

six 200mm

mixed flow,

direct drive,

tubeaxial DC

fans. Three of the fans blow air

across the condenser coil to provide

heat rejection from the refrigerant

system. In order to provide uniform

airflow across the evaporator coil,

the remaining three fans draw air

through the evaporator section. The

evaporator fans can be easily

replaced while the unit is in opera-

tion. All fans are variable speed,

allowing them to assist in modulat-

ing unit cooling capacity and

maintaining refrigerant head

pressure.

Insulated Side Panels

The frame

is con-

structed of

16 gauge

formed

steel for

maximum strength. All exterior

panels and corner posts on the

frame are powder coated for dura-

bility and an attractive finish. Front

and rear exterior panels are con-

structed of 18 gauge perforated

steel with 69.5% open free area.

Insulation is 5 lb/ft

(80.1 kg/m)

density and complies with ASTM

E84 rating of 25/50.

Condensate Pump

Removes condensate from the sys-

tem to ensure continuous operation.

The factory installed and wired con-

densate pump is capable of

pumping 1.3g/hr (5.9l/hr) against

head pressures of up to 50ft (15.2m)

of total run, of that 16ft (4.9m) can

be vertical lift.

Condensate Pan

Condensate Pan is fabricated from

V-0 polymeric materials and is ther-

mal formed, provided with

antifungal additives, and is a non-

ferrous material for higher indoor

air quality.

Electronic Hot Gas Bypass

An electronically controlled hot gas

bypass valve directs hot discharge

gas from the compressor back to the

expansion valve and into the coil.

During lightly loaded conditions,

compressor cycling is reduced and

prevents the evaporator coil from

freezing. Hot gas bypass also assists

in the management of the refriger-

ant head pressure.

Single Cord Power Supply

The 60hz unit utilize a NEMA L6-

20 plug, the 50hz unit uses an IEC

309 16A plug. The power cord can

be connected to the power feed

either through the top or bottom of

the unit.

Network Management Card

Permits multi-level access to moni-

toring, control, and event

notification features over the user’s

network. Also allows the InRow SC

to be integrated into APC’s InfraS-

truXure Manager device.

High Head Pressure Protection

The condenser fans modulate to

maintain a nominal refrigerant dis-

charge of 425 PSIG (6.9kPa). If the

condenser inlet air is restricted or

too warm, the refrigerant discharge

pressure will rise forcing the con-

denser fans to increase speed to

100%. To prevent a total loss of

cooling, the unit will slow evapora-

tor fans and begin to activate the hot

gas bypass valve to reduce system

capacity. If the discharge pressure

continues to rise, the unit will shut

down in order to prevent unit

damage.

Rack Inlet Temperature Control

To control the unit based on rack

inlet temperature, a remote sensor is

provided. This sensor is factory

wired for a remote placement in the

field on adjacent IT racks.

Remote Shutdown/IO Contacts

The unit provides one field connec-

tion input for remote shutdown. I/O

contacts allow for remote annuncia-

tion of any alarm condition or

critical only alarms.

Dual Fan Power Supply

The unit includes 2 power supplies,

each capable of running all fans at

80% capacity in the event of a sin-

gle power supply failure. Individual

power supplies are hot swappable.

Washable Filters

The filtration of conditioned air is

extremely vital to maintaining the

clean, particle-free environment

required by electrical equipment.

Filters are <20% efficient

(ASHRAE 52.1) and MERV 1

(ASHRAE 52.2) rated that meets

HF-1 standards for electronics.

Ducting Kit w/Ceiling Adapter

60Hz units have a 24in x 24in

adapter, 50Hz units have a

600mm x 600mm adapter. Each

duct tube is 6 ft. (1.8m) long and

10in (254mm) in diameter. Three

ducts are provided, one for the con-

denser supply and two for the

condenser exhaust. Mounting hard-

ware is provided to attach ducts to

the ceiling adapter.

SX Rack Baying Kit

Baying kit enables the cooling sys-

tem to be bayed to the APC

Netshelter SX enclosures. Kit is

made of 16 gauge steel.

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APC InfraStruXure InRow RC Service Manual Page 7

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