Unit Cooler ............................................. 19
Heater Replacement in Low Temp Unit Cooler .............. 19
SERVICE DIAGNOSIS ........................................... 21
Condensing Units ......................................... 21
STANDARD WARRANTY ........................................... 26
DIRECTORY OF AUTHORIZED WHOLESALERS
REPLACEMENT POLICY
INTRODUCTION
GENERAL DESCRIPTION (Figure 1)
The CZ + FILCO "Enviro-Therm" Outdoor Refrigeration System is designed
primarily for restaurant and hotel requirements and installations where
all refrigerated fixtures are to be remoted, i.e., walk-in
coolers/freezers, backbars, bottle and draft beer coolers, under counter
refrigerators/freezers and ice machines. This will allow the high heat
producing condensing units to be placed outside the building, thus
reducing indoor air conditioning requirements at a very nominal cost.
Totally ore-piped, pre-wired, and weatherized for fast, low cost rigging
and installation on rooftop, it is only necessary to provide main power
lines to control panel and wiring for control and defrost heaters between
panel and refrigeration fixtures. The system accommodates up to sixteen
compressor units and three ice machine condenser in one compact cabinet
thus handling all your refrigeration requirements. In addition, the unit
has been carefully designed for easy installation, providing ready access
for service and maintenance of all major components.
CONDENSING UNIT
A refrigeration condensing unit is a highly sophisticated apparatus. It
is installed with the anticipation that it will provide many years of
trouble-free operation with minimal maintenance. Usually the length of
service life realized from a particular condensing unit is directly
proportional to the care with which the original installation was
performed.
Cleanliness is absolutely mandatory when installing a condensing unit.
Utmost care has been taken at the factory to insure that the unit is free
of all contamination. The factory-applied seals must not be removed
until the unit is ready for installation. All tubing, valves and
fittings must be carefully inspected to insure cleanliness.
The correct electrical supply must be provided to the condensing unit
control panel. The voltage at the motor-compressor terminals should be
checked during start-up and unit operation under full load to insure a
tolerance of plus or minus 10 percent of the nameplate rating.
The lubrication recommendations for the motor-compressor and fan motors
(where applicable) must be carefully adhered to.
REFRIGERANT
R-22 is used for the Walk-In Cooler. R-502 is used for Walk-In Freezer.
CONTROL PANEL
Each Enviro-Therm system is provided with a prewired, weatherproof
control panel for single point connection with main fused disconnect.
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Control panel is designed Co assure efficient unit operation and provide
a pre-selected sequence of operation during the refrigeration and defrost
cycles. Each control panel is equipped with an interlocked main fused
disconnect, motor compressor breakers, contactors, fan motor capacitor,
defrost time clock for freezer, and metal photo wiring diagram plate for
service. An inside pocket is provided for engineering sheet (R-1) and
installation manual.
The control panel only requires 3-wires for power supply and 4-wires for
defrost heaters and unit cooler fan motors in freezer. All system
circuits are labeled for easy identification.
ELECTRICAL DEFROST
An electric defrost heater in the freezer is field-connected to the time
clock in the control panel. Defrost is initiated by a timeclock and
stopped by a termination solenoid in the timeclock connected to defrost
limit thermostat in the freezer coil. The timeclock is set to fail safe
termination period at 45 minutes. The freezer requires four defrosts per
day starting at 12:00 a.m., 6:00 a.m., 12:00 p.m., and 6:00 p.m..
ELECTRICAL CHARACTERISTICS
Each Enviro-Therm is equipped with 208-230 volts, 3 phase, 60 hertz power
supply with a total connected load of 20 amps.
STANDARD COMPONENTS
Each Enviro-Therm consists of six to sixteen semi-hermetic compressors,
multi-circuited condenser with heavy duty fan motors, oversized
receivers, factory installed accessories, unit coolers with T-Stat,
solenoid valve, TX valve and suction line P-Trap for freezer and cooler.
FACTORY INSTALLED ACCESSORIES
Drier, sight glass, suction and discharge vibration eliminators, head
pressure, control, crankcase heater, dual pressure control, prewired
control panel.
U.L. APPROVAL
The "Enviro-Therm" system is approved by Underwriters Laboratories and
displays the U.L. Label on the Control Panel, U.L. File No. SA6629(s)
under condensing and compressor units (SGYU).
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W.I. UNIT COOLERS
1. Freezer
A low temperature electric defrost Lo-silhouette Unit Cooler for the
freezer is provided with each Enviro-Therm unit. The Unit Cooler
draws air in through the coil and discharges it through the fans.
For best results, the Unit Cooler should be located 18" from the
back wall and blow towards the door. T-Stat, solenoid valve and TX
valve are installed in the Unit Cooler at the factory. A suction
line P-Trap is also installed in the Unit Cooler for better oil
return.
2. Cooler
A medium temperature Lo-silhouette Unit Cooler for the cooler is
provided with each Enviro-Therm unit. Air defrost is used for
defrosting Unit Cooler. The Unit Cooler is provided with T-Stat,
solenoid valve, TX valve and suction line P-Trap and is prepiped and
prewired for final connections.
The C/Z+FILCO "Enviro-Therm" package refrigeration units are tested and
assembled under strict quality assurance procedures. Each unit is tested and
charged with nitrogen prior to shipment.
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