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8APC NetworkAIR™ FM-DX

Optional Features

Brazed Plate Condenser

Water- and Glycol-cooled systems

employ a brazed plate heat

exchanger. The condenser is

equipped with clean out plugs.

Rotalock valves make removal of

the brazed plate condenser easy for

maintenance and replacement.

Water Regulating Valves

Water and glycol cooled systems

utilize two- or three-way valves to

regulate the amount of water or gly-

col supplied to the condenser in

response to refrigerant discharge

pressure. The standard valve pres-

sure rating is 400 psi (2758 kPa).

Cable Water Detector

A leak detection cable is placed on

the floor or subfloor around all pos-

sible leak sources. If water or other

conductive liquids contact the cable

anywhere along its length, the mas-

ter controller visually and audibly

announces a leak. The 20 ft. cable

may be cascaded to make custom

lengths up to 500 ft. A maximum of

four detectors (spot or cable) may

be installed.

Spot Water Detector(s)

The solid-state spot water detector

activates an audible alarm on the

controller when moisture is

detected. A maximum of four

detectors (spot or cable) may be

installed.

Firestat

A firestat is available for factory

installation in the air stream of the

unit. If the return air temperature

reaches 125°F (52°C), an audible

and visual alarm on the micropro-

cessor will be activated and the unit

will immediately shutdown.

Smoke Detector

The factory-installed smoke detec-

tor is designed to sense smoke in

the return air stream. Upon detec-

tion of smoke, an audible and visual

alarm on the microprocessor will be

activated and the unit will be imme-

diately shutdown.

MultiCool

The MultiCool systems contain a

chilled water coil and direct expan-

sion coil within the same cabinet.

Either cooling coil can be used as a

backup to the other. These systems

provide cooling using either build-

ing chilled water and/or the direct

expansion system.

Economizer

Glycol and water cooled systems

may be optionally configured with

an economizer coil. During cold

ambient conditions, the compres-

sorized system will shut-down and

utilize the cold outdoor air to cool

the water/glycol system, rerouting it

from the brazed plate heat

exchanger to the economizer coil

for efficient operation. One step

compressor operation may be uti-

lized to assist in economizer mode.

Flowswitch

Single pole, double throw

flowswitch detects when fluid flow

drops below the set flow rate. Ships

loose for field installation.

Network Cable

Various lengths of network cable

are available to ship with your cool-

ing system. Network cable is used

to interconnect multiple cooling

units in a redundant group, as well

as to connect the network manage-

ment card to your LAN.

Floorstand

The floorstand raises the unit above

the subfloor to match the height of

the raised floor. Floorstands are

equipped with air deflectors for

optimal air distribution. Heights are

available (from 12” (305mm) to 24”

(610mm)) on FM35 and (from 18”

(457mm) to 24” (610mm)) on

FM50 in 3” (76.2mm) increments

and are adjustable +/- 1.5”

(38.1mm). Adjustment is provided

by threaded pedestals. Vibration

absorbing pads are included. The

floorstand, pedestal, and pads ship

loose.

Discharge Duct Collar

A 1” (25.4 mm) duct flange is

shipped loose from the factory for

field installation to provide connec-

tion to external ductwork for either

supply or return as needed.

Sub-Base

The Sub-Base raises the height of

the unit by 10” (254mm) on upflow

units to provide access for electrical

and piping connections. Front and

rear access panels on the sub-base

are removable.

Plenums

Discharge plenums are available on

upflow and downflow systems. On

upflow configurations, heights are

offered in 20” (508mm) and 24”

(610mm) with front, 2-sided, or 3-

sided grilles. On downflow config-

urations, the plenum raises the

FM35 units by 12” (356 mm) and

the FM50 by 18” (457mm) and dis-

charges air horizontally from the

front of the plenum. This applica-

tion is recommended in rooms

where racks are positioned in hot

aisle/cold aisle configurations. Dis-

charge air should be ducted down

cold aisles.

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