Uni-line Product Knowledge for Rsu Temperature Controls

TEMPERATURE CONTROLS1 Robertshaw® proprietary and confidential ©2014  Refrigeration Overview           Refrigeration System Basics Differentials Cut-in and Cut-outs Capillary Tubes ETC Product Features Cold Controls Troubleshooting Literature Website Q&A Feature Sets  Electronic Accuracy  Wide Range (-30° to 220°F)  Wide Differential Selection  Easy Installation  Easy Programming  Clear Temperature Display  No Jumpers  Contractor Preferred  Sensor up to 400 Feet  Averages Multiple Sensors Applications  Ice Machines  Reach-In Refrigerator/Freezers  Walk-In Refrigerator/Freezers  Beverage Coolers  Condensing Units  Display Cases It Just Makes Sense™ . more critical on Commercial Refrigeration Applications . however refrigeration systems are:  Operation Time 24 / 7  Defrost Cycles  Load Changes  Energy Conservation Important on A/C Systems  However. Scientific principals are same. Defrost Control Pressure Control Temperature Control . Differentials Narrow Differential (10°F or less)  When a narrow differential is desired  Closely maintain within 5 to 6°F  Typically used for air sensing applications Wide Differential (10°F or more)  Required due to swing in evaporator temperatures between compressor ON and OFF  Household refrigerators and room air conditioners  Typically used to sense evaporator coil temperature .  Cut-out mode: Differential is above set point  Output relay energizes when temperature rises to set point plus the differential value  When temperature drops to set point. the relay de-energizes . the relay de-energizes  Cut-in mode: Differential is below set point  The output relay energizes when the temperature rises to set point  When the temperature drops to setpoint minus the differential value.  Constant cut-in controls (A30 series)  Designed for frost free refrigerators  Used in coolers and display cases  Differential cut-in controls (A12 series)  This type of control offers an adjustable differential  Rotating the dial indicator to the colder position changes the cut-out temperature only and widens the differential  Capillary tube  The gas within the capillary tube reacts to temperature changes  Actuates the power element diaphragm to trip the toggle mechanism . Desired Temp (Cut-Out Mode) Desired Temp (Cut-In Mode) . Two Types of Cold Controls:  Constant Differential  Constant Cut-in Applications  Water coolers  Beverage dispensers  Display cases  Constant Differential also called “straight range controls”  Designed for household refrigerators and freezers . .  Capillary-only bellows sense from the coldest exposure point  Capillary with bulb senses from the bulb only  The bulb portion of the A22 & A30 capillaries must be mounted with tip end pointing upward within 65° of vertical  Sensing elements of A22 & A30 contain saturated vapor liquid refrigerant and are sensitive to barometric pressure changes  Sensing elements C12 & C17 contain liquid filled bulbs for accurate temperature control  C12 & C17 bulbs may be oriented in any position . . .  Limited vapor-fill sensing element  Sense directly by the capillary  May be used where the desired sensing is at the coldest point along the capillary (including the control body itself)  Entire control located where it will sense fixture temperature .       Ice Machines Display Cases Reach-In Refrigerator/Freezers Walk-In Refrigerator/Freezers Beverage Coolers Condensing Units .           Electronic Accuracy Wide Range (-30° to 220°F) Wide Differential Selection Easy Installation Easy Programming Clear Temperature Display No Jumpers Contractor Preferred Sensor up to 400 Feet Averages Multiple Sensors . It Just Makes Sense™          Retail store display freezers and reach-in coolers Supermarket display cases for produce/meats Retail store walk-in coolers and freezers Boiler operating control (used as a thermostat) Condenser fan cycling or staging Cooling tower pump and fan control Space and return air temperature control Bulk milk coolers Poultry houses and livestock barns .  Microprocessor based electronic temperature control  Designed to provide ON and OFF control for commercial HVACR Part Number Voltage (AC) Stages Enclosure ETC-111000-000 120/240 1 Standard ETC-112000-000 24 1 Standard ETC-212000-000 24 2 Standard ETC-211000-000 120/240 2 Standard ETC-141000-000 120/240 1 NEMA 4X . Ranco® Electronic Temperature Control is Easier to Use!  No jumpers required  Simple programming  Johnson A419  Short cycle protection  Optional external setpoint change switch  LED lights when relay energized  Includes 3 configuration jumpers  Hard to remember programming . Art series Asian knock-offs Sunne Peco Ranco® .E.       Johnson Controls – Penn White-Rodgers Saganomia (Danfoss) G. . Ice Maker      Ice Bin Level Control Ice Harvest Commercial Refrigeration Household Water Coolers Cold Control     A and CC Series K and RC Series 9500 Series Cold Controls 3030 Series Uni-Kits .  Order Cold Control Sell Sheet  English and Spanish 150-2300 .  Order Commercial Refrigeration Brochure  150-2282 .     Mount unit to wall or flat surface Review typical line voltage wiring diagram Determine location of sensor Program 4 simple steps . Instructions for wiring:  Open case by removing four screws  Connect black wire to COM  Connect white wire to 120 or 240  Attach common wire  Connect voltage to NO or NC switch  Close case and screws closed . C1 (cooling) or H1 (heating) Done! . 2. DIF1 (differential) 5° Set. 4. °F or °C Set. S1 (setpoint) 70° Set. 3.Setting up Temperature Control is as Easy as 1-2-3-4! 1. Set. shorted or sensing a temperature that is out of range  Check if the sensed temp is out of range. replace control .  If not. check for probe damage by comparing it to a known ambient temp between -30° F and 220° F. E1 appears when up or down keys are pressed  If E1 appears when no keys are being pressed.  Remove power to the control for at least five seconds. Replace the probe if necessary.  EE appears if the EEPROM data has been corrupted  This condition cannot be field repaired.  If CL message still appears. replace the control  E2 appears if control settings are not properly stored in memory  Check all settings and correct if necessary  EP appears when the probe is open. Reapply power. Replace control  CL appears if calibration mode has been entered. -30°C to 220°C . -30°F to 220°F C. -50°F to 0°F B.What is the temperature range of the Ranco® Electronic Temperature Control (ETC)? A. 24V AC D. 240V AC C. All of the above .What voltages are available within the ETC family of products? A. 120V AC B. Convection C. Conduction B. Radiation 32 © Invensys 2014 .What rule of heat transfer is mostly used in refrigeration? A. Telephones: Technical Service 1-800-445-8299 Technical Service Fax 1-630-260-7294 Customer Service 1-800-304-6563 Customer Service Fax 1-800-426-0804 Websites: Uni-Line® Catalog: www. All rights reserved.uni-line. Uni-Line®. All third party trademarks and service marks are the proprietary marks of their respective owners. Ranco®. .ToolBox. Paragon®.Uni-Line. and Make the Connection™ are propriety marks of Robertshaw or its subsidiaries.com General Information for: Robertshaw®.com/modules/xref/xrefsearch.InvensysControls. Ranco®. © 2014 Robertshaw.com Cross Reference: www. Paragon®.aspx Toolbox: www. Uni-Line® and Publication Zone® Robertshaw®.