Technical data

Guide Specifications
42 APC NetworkAIR™ FM-DX
PART 2 — PART 2 PRODUCT
2.01 STANDARD COMPONENTS
A. CABINET CONSTRUCTION
1. Double Skin Panels:Exterior panels shall be double-wall 24 gauge metal with 24 gauge
interior wall and insulated with 1.5 lb (0.68kg) density fiber insulation. Insulation shall be
completely protected from the air stream by the panel wall or air blocks. Front exterior
panel crown shall be 16 gauge. Front panels shall be powder coated and removable hinged
with a locking handle. Exterior frame and panel color shall have color values: L = 14.02, a
= 0.13, b = +3.68. Main bezel color shall have color values: L = 13.44, a =.43, b = -2.63.
2. Frame: The frame shall be constructed of 12 gauge bolt-together formed steel for
maximum strength. All units shall have full service access from the front allowing systems
to be placed side by side.
B. DIRECT DRIVE MOTOR/BLOWER ASSEMBLY
1. Blower: The unit shall be configured for draw-through air pattern, to provide uniform air
flow over the entire face of the coil. Each cabinet shall include, double-inlet, double-width
centrifugal blower(s) assemblies with forward-curving blades, dynamically and statically
balanced as a completed assembly to a maximum vibration level of two mils on all planes.
Blowers shall be mounted based on mass and frequency to minimize vibration and noise.
2. Frequency Controlled Motor: A direct drive motor and frequency controller shall be used
with each blower in the system to enhance user functionality. The frequency controller
shall communicate with the master controller via RS485 MODBUS communication link.
Each unit shall be equipped with two blowers with a direct drive motor and a frequency
controller for each motor.
C. TANDEM SCROLL COMPRESSORS
1. Refrigeration system: The system shall operate under the coordination of the main
controller. Suction and discharge pressures shall be monitored and electronically
controllable. Each refrigeration system shall consist of a fully protected scroll or tandem
scroll compressor, evaporator coil mounted over an anti-fungal, 94VO thermal formed
plastic condensate pan, adjustable expansion valve, filter-drier, liquid line solenoid valve,
sight glass, receiver, liquid line isolation valve, low pressure switch and manual reset high
pressure switch.
2. Tandem Scroll Compressors: The unit shall contain scroll compressors for optimized
performance, efficiency and reliability. The heavy-duty scroll compressors shall be
designed for year-round usage. Units shall utilize tandem scroll compressors for staged
capacity control.