
12 APC NetworkAIR CM Series: Optional Features
Environmental monitoring unit. A stand-alone unit performs continuous
temperature and humidity sensing through two available probes (one
included) and contact monitoring. The unit is controlled by available web,
control console, or SNMP interface with network connection. In the event of
an environmental anomaly, notification is sent to the customer via e-mail or
SNMP. The unit is 18.25" × 9" × 2.75" (464 mm × 229 mm × 70 mm) and sits
in or on top of a rack. The probes extend up to 12' (3.66 m) from the unit.
Airflow sensor. The air proving switch is continuously monitored by the
microprocessor. Upon detection of a loss of air flow the microprocessor will
deactivate: cooling, heating, humidification and dehumidification. After the
air flow has been restored for a predetermined period of time the
microprocessor will reactivate the functions as needed. Comes standard with
microprocessor.
Reheat Hot water or steam reheat. An on/off solenoid valve for steam reheat, or a
modulating valve for hot water reheat maintains the dry bulb temperature
when the system is in dehumidification and heat mode. Completely factory
pre-piped, the system includes a copper tube, aluminum-fin reheat coil,
solenoid valve, float, and thermostatic and steam trap for steam reheat only.
Hot gas reheat. The copper tube, aluminum fin hot gas reheat coil
maintains the leaving dry bulb temperature when the system is in the
dehumidification mode. The coil is controlled by the microprocessor through
a factory-piped-and-wired three-way heat reclaim regulator and check valve
(water/glycol only.)
System Components High efficiency filter(s). Pleated final filters with an efficiency of 40% and
60% (ASHRAE 52.2), 4" (102 mm) deep, allow the removal of a greater
percentage of airborne particulate contaminates (4–5 ton units.)
Prefilter(s). Intended to capture large airborne particulate contaminates,
thereby extending the life of the high-efficiency filter. Prefilters are 1" (25
mm) deep and easily disposable.
Condensate pump. The condensate pump, shipped loose, will pump 36 gal/
h (0.06 L/s) at 15' (4.6 m) head.
High pressure water regulating valve(s). Water and glycol systems may
utilize an optional regulating valve, which operates with a maximum pressure
of 350 psi (2400 kPa), to automatically control condensing temperature.
Flared filter-drier connection. Flared threaded connections can be
provided on either side of the filter drier to expedite replacement.
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 during low load conditions. This optional feature will offer
longer compressor run times and minimize compressor cycling and
temperature fluctuations.
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