Specifications
4APC NetworkAIR™ AFX
Optional Features
Condenser
Water- and Glycol-cooled systems
employ a brazed plate condenser
that uses the latest heat transfer
technology. Type 316L stainless
plates are brazed together in a vac-
uum furnace and comply with
ASME pressure vessel code. Pres-
sure rating is 450 psi (3100 kPa).
Water-Regulating Valve
The Water-and Glycol systems
maintain proper performance by
sensing refrigerant discharge pres-
sure and regulating the among of
water or glycol supplied to the con-
denser. A two-way or three-way
valve is available. The standard
valve pressure rating is 150 psi
(1030kPa).
Discharge Duct Collar
A 1” (25.4 mm) duct flange is
shipped loose from the factory for
field installation to provide conve-
nient connection to external
ductwork for either supply or return
as needed.
Secondary Drain Pan
Systems are provided with two
drain pans. The primary stainless
steel condensate drain pan lies
directly under the cooling coil. A
secondary emergency drain pan
provides additional protection by
catching and water before it reaches
the subfloor and becomes a
problem.
Spot Water Detector(s)
The solid-state spot water detector
activates an audible alarm on the
controller when moisture is
detected.
Compressor Lockout
Prevents compressor operation in
emergency situations where limited
back-up power is available.
Cable Water Detector
A 20 ft. leak detection sensing cable
is placed on the floor or subfloor
around all possible leak sources. If
water or other conductive liquids
contact the cable anywhere along its
length, an alarm is triggered.
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.
Remote Relay Shutdown
Shutdown of the NetworkAIR sys-
tem can be done remotely by a
factory installed relay. The relay
can be ordered with a 24V, 120V, or
240V coil. The relay must be pow-
ered by others to disable the
NetworkAIR system.
Reheat/Humidity Lockout
When facilities have limited backup
power capacity, this lockout pre-
vents the operation of electrical
loads that are not essential for con-
tinued site operation.
Remote Display Panel
The microprocessor controller
allows facility or building mainte-
nance personnel to evaluate and
control the unit from up to 50ft.
away from the unit, without having
to enter the secured space.
Remote Sensor(s)
Environmental sensor(s) can be
strategically placed, up to 50ft.
from the unit to better meet the
site’s cooling needs. The sensor
must be positioned to permit air
movement across the sensors.
Hot Gas Bypass
An auxiliary side-port hot gas
bypass circuit. The activation of the
hot gas bypass circuit will maintain
the evaporator coil temperature dur-
ing low load conditions. This
optional feature will minimize com-
pressor cycling and temperature
fluctuations.
3-Way Valve Flow Switch
A Single-Pole, Double-Throw flow
switch can be wired to energize one
device and de-energize another
device powered from the same
source when fluid flow either
exceeds or drops below the set flow
rate.
Air Deflector
A field installed air deflector runs
the length of the unit and attaches to
the floorstand for changing air
direction from vertical to
horizontal.
Plenum
Air discharge plenums are available
with upflow configurations.
Heights are offered in 20” (508mm)
and 24” (610mm). Manually adjust-
able, double deflecting grilles are
provided on 3 or 4 sides.
OHE Disconnect
A non-fused disconnect switch may
be wired to an outdoor heat
exchanger to disconnect high volt-
age power if necessary.