8
®
CyberPack
DX REFRIGERATION SYSTEM
Refrigeration System
All piping and components contained within the refrigeration
system shall be rated for use with R410A refrigerant. Each
refrigeration circuit shall include, as a minimum, a refrigerant
dryer/strainer, sight glass with moisture detector, condenser
coil, thermal expansion valve, evaporator coil, compressor,
high pressure switch with manual reset, and a low pressure
switch with automatic reset.
Evaporator Coils
Cooling coils shall be fabricated of seamless drawn copper
tubes, mechanically bonded to aluminum fi ns (that have an
enhanced design for maximum heat transfer) and encased in
a galvanized steel frame. Nominal face velocity shall not be
more than 500 ft./min. at maximum rated airfl ow.
Coils shall be provided with a stainless steel drain pan
extending beyond the leaving coil face. Cooling coil drain
pans shall be sloped in the direction of airfl ow. A condensate
drain line shall be piped to the cabinet exterior for fi eld
connection of a trap (provided by others). Evaporator coils
shall be leak tested using pressurized dry nitrogen at the
factory. The air conditioner shall ship with a refrigerant
charge of R-410A.
Condenser Fans
Condenser fans shall be axial, direct drive with electronically
commutated (EC) motors. Fan speed is variable without the
need for an external variable frequency drive. Fan speed is
modulated in response to refrigerant head pressure. The
EC condenser fan shall contain permanently lubricated ball
bearings. Fans requiring re-greasing shall not be acceptable.
Condenser Coils
Condenser coils are microchannel type to provide greater
capacity, greater effi ciency, and require less refrigerant.
Flooded head pressure control is provided for operating to
-30F ambient. Liquid receivers and compressor crankcase
heaters are included.
Scroll Compressor
The compressors shall be a high effi ciency, high reliability
and low noise scroll compressor. The compressor shall be
complete with internal vibration isolation, internal thermal
overloads, an internal pressure relief valve, an internal
discharge gas vibration eliminator, and external vibration
mounting isolation.
Snap-Acting Hot Gas Bypass (Optional)
The CyberPack system shall incorporate a snap acting hot gas
bypass system to provide modulation of the unit’s cooling
capacity and evaporator coil freeze protection under low
load conditions.
ELECTRICAL SYSTEM
The electrical system shall be factory wired in accordance
with NFPA 70 (NEC). A single point power connection shall
be provided for main power. In accordance with NEC Class II
requirements, the control circuit shall be 24VAC and wiring
shall not be smaller than 24 AWG. Each wire shall end with a
service loop and be neatly secured and labeled in accordance
with the unit electrical drawing. Components in the electrical
enclosure shall be labeled in accordance with the electrical
drawing.
Each high voltage circuit shall be individually protected on all
three phases. Fan motors and compressors shall have thermal
and short circuit protection.
Main Power Service Switch
The CyberPack system shall be provided with a unit mounted
main power, non-fused service switch.
Remote Stop/Start Contacts
Included in the system’s electrical control circuit shall be
a 2-pin terminal connection for remote stop/start of the
CyberPack.
Power Usage Meter (Optional)
A power meter is used to monitor real-time power
consumption data. A display screen may be called up in the
E²
controller user interface to view the data. The power
consumption data may also be viewed via a BMS interface
to the controller.
Utility Receptacle (Optional)
A 120VAC, 20A utility receptacle shall be provided and
mounted on the CyberPack exterior. The receptacle shall be
GFCI and includes a weather proof cover. 120VAC power
shall be provided by others.
Pr
oduct Guide Specifi
cations
