Russell ET-4 User Manual

Model ET-4

Air Cooled
Refrigeration
Systems

ENVIRO-THERM REFRIGERATION SYSTEM

CONTROL PANEL

INTERNAL REFRIGERATION PIPING

COMPRESSOR AND CONDENSER SYSTEMS

FRAME AND HOUSING

221 S. Berry St., P.O. Box 1030, Brea, CA 92822-1030 • Tel [phone] • FAX [phone]

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
outdoor weather housing, compressor and 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 outdoor weather shall include a welded, de-burred and cleaned
structural steel base frame made of 3 inch members. The exterior
housing and access doors will be manufactured of a minimum of 16
gauge galvanized steel which has been assembled and cleaned.

The frame and housing shall be painted with a baked polyester
powder coating.

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, flooded head pressure control valve 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 include the Multi-Circuited condenser,
³⁄₄ horse power condenser fan motors with 24 inch fan blades
mounted in a venturi contoured air-scoop protected by plastic coated
fan guards, and flooded headpressure controls. The compressors
and condenser circuits shall be sized to operate at an average
temperature differential between the ambient and condensing
temperatures of 20°F.

The exterior mounted, weather proof, 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, start capacitors,

and fan cycle control thermostats for each of the condenser fan
motors. 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 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.

EVAPORATOR COILS

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.

ITEM NO:_______

Model ET-4

Air Cooled
Refrigeration
Systems

U

L

®

DIMENSIONAL DATA

PHYSICAL DATA

COMPRESSOR DATA

MEA

Approx. Maximum Number Typical Overall Dimensions (In.) Approx.

Total Number of of Weight

HP* Comp. (Spaces)** Fans

Length Width Height

(lbs.)

24.0 12.0 3 142 61

¹⁄₂ 54 3890

System Item Fixture Description Freon Compressor Voltage Evaporator(s) Voltage

* Total compressor HP will be determined by comp(s). used.

**

¹⁄₂ - 3 HP = 1 comp. space, 5 HP = 2 comp. spaces.

Note: Compressors are designed with matching evaporator coil.

Consult factory for specific electric data.

Specification subject to change without prior notice.

221 S. Berry St., P.O. Box 1030, Brea, CA 92822-1030 • Tel [phone] • FAX [phone]

61-1/2"

54"

132"

142"

CONTROL PANEL