16
STULZ CyberRow
PROPORTIONAL ELECTRONIC EXPANSION
VALVE
An electronically operated thermostatic expansion valve shall
be installed to precisely control the flow of liquid refrigerant
into the evaporator coil while maintaining the desired
superheat across a wide range of operating conditions.
ELECTRONIC HOT GAS BYPASS
(CRS-042/084)
An electronically operated hot gas bypass valve shall be
installed. The hot gas bypass valve shall provide modulation
of the unit’s cooling capacity, and evaporator coil freeze
protection under low load conditions.
PIPING CONFIGURATION
Top Piping: When top piping is specified, the CyberRow
units shall be provided with connections for water/glycol or
refrigerant piping and condensate discharge on the top of the
cabinet.
Bottom Piping: When bottom piping is specified (e.g. raised
floor applications), the CyberRow units shall be provided
with connections for water/glycol or refrigerant piping and
condensate pump discharge through the bottom of the
cabinet.
CONDENSATE PUMP
The CyberRow shall include a factory wired, and installed,
in-pan condensate pump. The condensate pump shall have
the capacity of 3 gal/hr. at 3 ft. of lift with a maximum shut
off (head) of 40 ft. The condensate pump shall be piped
with either top or bottom discharge connections, to remain
consistent with top or bottom piping connections.
Return Air Sensor
A factory mounted and wired temperature sensor (NTC)
mounted in the return air stream temperatures shall be pro-
vided.
Supply Air Control (optional)
The STULZ CyberRow shall be provided with a temperature and
humidity sensor factory unit mounted in the return air stream
and a field installed supply air temperature (optional) and
humidity sensor for supply air control capabilities. The controller
shall provide the user an adjustable supply air control setpoint.
refrigerant. Each refrigeration circuit shall include, as a
minimum a refrigerant dryer/strainer, sight glass with
moisture detector, an electronic thermal expansion
valve, an evaporator coil, a compressor, a high pressure
switch with manual reset, and a low pressure switch with
automatic reset.
SCROLL COMPRESSOR
The compressor shall be a high efficiency, 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.
EVAPORATOR COIL
The evaporator coil shall be constructed of seamless drawn
copper tubes, mechanically bonded to tempered aluminum
fins (that have an enhanced design for maximum heat
transfer), and mounted in a stainless steel condensate
drain pan. The coil shall be designed for a maximum of
500 ft./min. face velocity.
VARIABLE SPEED COMPRESSOR
(CRS-090/091)
The speed of the compressor shall be controlled with a
variable frequency drive (VFD) to match compressor
capacity to the actual thermal load....The VFD shall be
capable of providing power for the compressor to operate
up to 120 rpm. The VFD shall proportionally control the
compressor motor speed to maintain a constant supply air
temperature.
MICRO-CHANNEL EVAPORATOR COIL
(CRS-090/091)
The Micro-Channel coil shall be constructed of brazed
aluminum. The coil is designed with high performance
fins to provide low airside pressure drop and high heat
transfer. Micro-Channel tubes offer a more predictable
performance and improved air to refrigerant approach
temperatures are achieved. The coil shall be mounted in a
stainless steel condensate drain pan and shall be designed
for a maximum of 500 ft./min. face velocity.
PRODUCT GUIDE SPECIFICATIONS
To Next Page
Loading...
