Ranco ETC-111000-000 Installation Data

The Ranco® ETC is a microprocessor-based
family of electronic temperature controls,
designed to provide on/off control
for commercial heating, cooling, air
conditioning and refrigeration. The ETC
is equipped with a liquid crystal display
(LCD) that provides a constant read
out of the sensed temperature, and a
touch keypad that allows the user to
easily and accurately select the setpoint
temperature, differential and heating/
cooling mode of the operation. Models
are available that operate on either line
voltage (120/208/240V AC) or low voltage
(24V AC).
APPLICATIONS
With its wide temperature setpoint range
and selectable heating or cooling modes,
the ETC can be used for a wide variety of
applications including refrigerated display
cases, walk-in and reach-in refrigerators,
milk coolers, refrigerated warehouses,
chillers, beer and beverage coolers,
tank heating, space and return air temperature
controls and condenser fan cycling.
FEATURES
• Wide setpoint temperature range (-30°F to 220°F) and differential
adjustment (1°F to 30°F)
• Simple keypad programming of setpoint temperature, differential
and cooling/heating modes
• LCD display readout of sensor temperature, control settings,
relay status and onboard diagnostics
• LED (Light Emitting Diode) backlight to improve visibility of the display
in low light ambient applications.
• IP67 rated (water and dust resistant) thermistor-based probe to
remotely monitor temperature
• The sensor probe can be retrofitted in the field by the use of factory
installed interconnect
• Remote temperature sensing up to 400 feet
• SPDT output relay
• User-selectable Fahrenheit/Celsius scales
• Lockout switch to prevent tampering by unauthorized personnel
• Choice of line voltage and low voltage models available
• Optional 0 to 10 volt analog output available for remote temperature
indication
• Anti-short Cycle Compressor Delay for cooling applications
SPECIFICATIONS
Input Voltage 120 or 208/240V AC (24V AC optional), 50/60 Hz
Temperature Range -30°F to 220°F
Differential Range 1°F to 30°F
Switch Action SPDT
Sensor Thermistor, 1.94in. long x 0.25 in. diameter with
8 ft. cable, IP67 rated
Power Consumption 120/208/240V AC:
24V AC:
ETC SINGLE STAGE ELECTRONIC
100 Milliamps
2 - 6 VA
1
INSTALLATION DATA
TEMPERATURE CONTROL
Relay Electrical Ratings
NO Contact
Full-load Amps
Locked rotor Amps
Resistive Amps
Horsepower
NC Contact
Full-load Amps
Locked rotor Amps
Resistive Amps
Horsepower
Pilot Duty: 125 VA at 120/208/240V AC
Control Ambient Temperature
Operating
Storage
Ambient Humidity
0 to 10V Output Impedance 1K
Enclosure
Agency Approvals
ETC ORDERING INFORMATION
Uni-Line OEM
Numbers Numbers
ETC-111000-000 ETC-111020-000
ETC-111100-000 ETC-111120-000
ETC-112000-000 ETC-112020-000
ETC-112100-000 ETC-112120-000
OPERATION
Liquid Crystal Display (LCD)
The LCD display provides a constant read out of the sensor temperature
and indicates if the output relay is energized. When the S1 annunciator
is constantly illuminated during operation, the relay is energized. The
display is also used with the keypad to allow the user to adjust the
setpoint temperature, differential and heating/cooling modes.
Backlight
When any of the 3 mode keys are pressed, the backlight is activated
and the ETC is in control mode. Press the SET key to begin program
mode.
Control Setup
The temperature setpoint refers to the temperature at which the
normally open (NO) contacts of the output relay will open. Determine
the load (s) to be controlled and the operating mode required, cooling
or heating. Refer to Figure 1 for a visual representation.
• When the cooling mode is chosen, the differential is above the
setpoint. The relay will de-energize as the temperature falls to the
setpoint.
• Anti-short Cycle Compressor Delay for cooling. After a relay
de-energizes, the ETC will prevent the relay from turning on until a
configurable time has occurred to protect compressor.
• When the heating mode is chosen, the differential is below the
setpoint. The relay will de-energize as the temperature rises to the
setpoint.
120V 208/240V
16 Amps 8 Amps
96 Amps 48 Amps
15 Amps 8 Amps
1 HP 1 HP
5.8 Amps 2.9 Amps
34.8 Amps 17.4 Amps
5.8 Amps 2.9 Amps
1/4 HP 1/4 HP
-20°F to 140°F (-29°C to 60°C)
-40°F to 176°F (-40°C to 80°C)
0 to 95%, RH, Non-condensing
NEMA 1, Plastic
UL Listed, File E94419, Guide XAPX
CSA Certified, File LR68340, Class 4813 02
Input No. of
Voltage Stages
120/240 1
120/240 1
24 1
24 1
0 - 10 V
Output
No
Yes
No
Yes