Model ECW-*T
Water-Cooled
Refrigeration
Systems
ENVIRO-COOL REFRIGERATION SYSTEM
CONTROL PANEL
INTERNAL REFRIGERATION PIPING
COMPRESSOR AND CONDENSER SYSTEMS
FRAME
221 S. Berry St., P.O. Box 1030, Brea, CA 92822-1030 • Tel (714) 529-4461 • FAX (714) 529-8503
EVAPORATOR COILS
ITEM NO:_______
The packaged refrigeration system is to be U.L. Listed and will be
located on a pad outside of the building. This unit includes the
frame, compressor and water-cooled condenser systems and
electrical control panel, all housed within a single assembly. The
evaporator coil assemblies will be supplied with all the required
options and accessories. All of the component parts, options and
accessories will be provided, mounted, piped and wired, as required
by the manufacturer. The system shall be manufactured to operate
at: _______ volts, ________ phase, ________hertz.
The frame shall include a welded, de-burred and cleaned structural
steel base frame made of 3 inch members. The frame shall be
painted with a primer coat of epoxy based paint and finished with a
coat of polyurethane acrylic enamel.
All compressors will be Copelaweld, Tecumseh, Copelametic or
Discus. All compressors will be manufactured to operate with R-22
or R-404A refrigerant. Each Compressor system shall be filled with
refrigerant compatible refrigeration oil by the manufacturer and will
include discharge and suction line vibration protection (vibrasorbers
with Copelametic and Discus compressors), dual pressure control
with stainless steel braided piping, liquid line filter-dryer, moisture
indicating sight glass, and crankcase heater. Each of these systems
shall also include a receiver tank capable of accepting all of the
system refrigerant without exceeding 90% of its volumetric capacity.
Each receiver will be provided with a pressure relief vent and, at its
inlet and outlet, a roto-lock isolation valve with a service port.
Additionally, all compressor systems that will operate at suction
temperatures below 0°F shall include a suction line accumulator.
The condenser system shall utilize a coaxial style condenser, Tubein-tube design, with copper inter tubes surrounded by a steel shell.
The condenser is pre-piped with water regulating valve, vibrasorbers
and water isolation valves. The compressors and condenser circuits
shall be sized to operate at a maximum temperature differential of
20°F between the inlet and outlet condenser water temperature.
The exterior mounted, electrical control panel will be manufactured
of 14 gauge galvanized steel which has been assembled, welded,
de-burred and cleaned. The control panel shall include hinged
access doors with a built-in fused disconnect switch inter-locked to
shutoff all system electrical power when the doors are opened,
circuit breakers and contactors for each compressor, required
defrost time clocks, and circuit breakers, and start capacitors. A
wiring diagram of the refrigeration system shall be photo etched onto
an anodized aluminum plate and permanently affixed to the inside of
the refrigeration system. All internal wiring shall be held in place with
fasteners and individually numbered. The wire numbers shall be
shown on the wiring diagram
All of the internal refrigeration piping shall be extended to one side
of the refrigeration system in a neat and orderly manner. Each set
of piping shall have a label permanently affixed identifying the
system it will service. All internal refrigeration and condenser water
piping shall be refrigerant grade A.C.R. or type L copper tubing. All
tubing shall be held in place with Uni-Strut channels and clamps and
protected with neoprene grommets. A minimum of
¹⁄₂ inch thick
insulation shall cover all suction lines.
After circuiting the condenser shall be tested for leaks at a minimum
pressure of 500 pounds per square inch/gauge (psig). After final
assembly the entire system shall be tested for leaks at 300 psig and
evacuated pressure test at 500 microns at the factory. The
refrigeration system shall be shipped with a 25 psig charge of dry
nitrogren.
The evaporator assemblies, and the parts associated with them, will
be mounted inside of the walk-ins. Each evaporator coil shall
include a matching thermostatic expansion valve, liquid line solenoid
valve and thermostat. In cases where two (2) or more evaporator
coils are to be piped to a single compressor the thermostat and liquid
line solenoid valve will be shipped loose to be mounted and wired at
the job site.