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Related Manuals for Delta-T RZ-02A Series
Summary of Contents for Delta-T RZ-02A Series
- Page 1 User & Technical Manual RZ-02A, RZ-03A, & RZ-04A Series for Class I, Division 2 Hazardous Locations Rev 1.9...
- Page 2 Title: RZ-02A, RZ-03A, & RZ-04A Air Conditioner for Class I, Division 2 Hazardous Locations Technical Manual Department: Engineering Objective: To provide important information for maintenance, diagnostics and advance operations of the DELTA-T RZ-02A, RZ-03A, & RZ-04A Series Air Conditioners. Revision History: Date Owner...
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Page 3: Table Of Contents
TABLE OF CONTENTS Overview Inspecting the Equipment Unpacking the Air Conditioner Moving the Air Conditioner Unit Label Operation Preliminary Testing Mounting the Air Conditioner Unit Specifications Options System Faults Digital Temperature Controller Programming Preventative Maintenance Field Serviceable Parts Safety Information Troubleshooting Guide Physical Dimensions Electrical Schematic... -
Page 4: Overview
Overview Thank you for your purchase of the DELTA-T Special Purpose Air Conditioner. Our air conditioning equipment is carefully designed to cool and dehumidify the air in electronic component enclosures. ISC has designed air conditioners for all types of electronic equipment enclosures providing capacity from 1,000 to 20,000 BTUH. -
Page 5: Moving The Air Conditioner
UL listing voided. Operation DELTA-T air conditioners will lower (or increase as necessary) the temperature inside an enclosure to ensure its proper operational temperature. Our air conditioners, when sized properly, will provide cooling or heating automatically controlled by the temperature digital controller. - Page 6 The cooling is done using a simple refrigeration cycle. A product of this simple refrigeration cycle is excess humidity that condenses to a liquid. DELTA-T air conditioners are designed using an advanced refrigeration cycle and are equipped with a Condensate Removal System that changes the excess humidity liquid into a vapor which is then vented to the atmosphere.
- Page 7 Sealed Device Information: Sealed Device: Compressor Overload Protector Models B130 -135-241A, B170-150*-241C manufactured by Foshan Tongbao. Model MRA98706 manufactured by Sensata Technologies. Epoxy: Manufacture of Material – Resinlab L.L.C. Designation of Material – Type EP 1295 Black Generic Name of Plastic Material – Epoxy Resin Sealed Device: Condenser Fan Switch –HS300-349-0002 manufactured by Wilspec, Oklahoma City.
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Page 8: Preliminary Testing
Preliminary Testing Before mounting the air conditioner to the enclosure, test for proper operation. Follow the steps below prior to installation. WARNINGS The air conditioner must sit upright for 24 hours to assure the compressor oil has drained down to the compressor. -
Page 9: Mounting The Air Conditioner
Mounting the Air Conditioner Using the template supplied, determine where the air conditioner is to be mounted and assure that all required cuts and holes will not interfere with or damage the enclosure or its contents. Assure that there is a 3” clearance between walls / obstructions and the air conditioner for the condenser supply air and return air flow so that it is not restricted. -
Page 10: Unit Specifications
Unit Specifications The following table provides electrical and refrigeration specifications for the RZ-02A, RZ-03A, & RZ- 04A Series Air Conditioners. RZ-02A Series Nominal Capacity Rating: 2,000 BTUH Maximum Ambient: 122°F Temperature Classification: T4 Unit Weight: 115VAC – 65lbs, 230VAC – 72lbs, 460VAC – 99lbs... - Page 11 RZ-03A Series Nominal Capacity Rating: 3,000 BTUH Maximum Ambient: 122°F Temperature Classification: T4 Unit Weight: 115VAC – 66lbs, 230VAC – 72lbs, 460VAC – 99lbs SCCR Inrush Loading Operating (Short Low/High Current Current Recommended Refrigerant Voltage Circuit Refrigerant Unit Model (Start Up (Running Fuse Selection Amount...
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Page 12: Options
Refer to Advanced Digital Temperature Controller Programming section on page 14 for details on changing these parameters. Celsius Programming Celsius Programming option allows the user to control the DELTA-T Air Conditioner in SI units. This feature can be programmed into the digital temperature controller at time of manufacturing. External Heat Output This option allows you to add an external heater to be located anywhere in your enclosure. - Page 13 Special Programming All DELTA-T Air Conditioners have a Special Programming option for selecting unique pre in programmed settings for special requirements. Although most parameters are accessible in our digital controller, this option allows you to receive a unit preset to your requirements without the need to manually configure the unit.
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Page 14: System Faults
System Faults If any of the critical control parameters exceed limits, the compressor is turned off and an alarm condition is indicated on the front panel. There are three main conditions that can shut the AC compressor down: The condenser high temperature alarm ... - Page 15 HOW TO ACCESS HIDDEN MENU 1…….. Enter the Programming mode by pressing the SET + DOWN arrow keys simultaneously for 3 seconds. The “F” LED starts blinking. Select the required parameter by pressing the UP or DOWN arrow key. Press the SET key to display its value.
- Page 16 Menu Factory Operating Function Operation Parameter Unit Location Default Range Heater or Dry Contact Auxiliary Hidden 1 - 45 °F Differential Menu 2 Hysteresis Maximum Alerts with “HA” when Hidden Temperature maximum temperature has 45 - 302 °F Menu 2 Alarm been exceeded Minimum...
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Page 17: Preventative Maintenance
Loss of Refrigerant DELTA-T air conditioners are meticulously leak and run tested after assembly. If a leak in the system should develop due to shipping damage or mechanical vibration, the leak must be detected, repaired and the refrigerant charge restored to the system by a qualified refrigeration professional. -
Page 18: Field Serviceable Parts
Conditioner has been tested by UL to meet the safety requirements of the UL484 specification. When working with the DELTA-T Air Conditioner always makes sure shroud is installed. Verify proper voltage is applied to unit as specified in the UL label of the Air Conditioner. In the event of a field service repair, power down unit and disconnect power from unit. -
Page 19: Troubleshooting Guide
Troubleshooting Guide The following guide provides a flow chart to identify a problem, determine the root cause and identify the action needed to correct an issue. Verify input power meets voltage Unit Will Not Run Is Unit requirements as Connected? shown in the UL label Please Connect Power... - Page 20 Measure Temperature at Evaporator Is evaporator Is Compressor Unit Not Cooling & Verify Heat Load Requirements. Is Fan on? unit capacity adequate for internal head load? Possible low refrigerant. Check for faulty evaporator fan 3 Check Setpoint. Is Is snowflake Is there voltage to Setpoint LED lit on...
- Page 21 Single or Potential bad P1 / P2 Flashing Error Multiple connection. Check combination Codes Codes? green connector flashing? behind controller. Refer to Alarm Signals in Digital Temperature Controller Check Low Pressure Programming Section Switch Connections and Verify Pressure switch is closed. Use meter.
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Page 22: Physical Dimensions
Ensure air tight Is Air Conditioner sealed seal between air against enclosure Water overflow / Check drain, is it conditioner and properly, tightly sealed excessive plugged? enclosure. Make and door closed? sure door is closed. Clean condensate pan and drain; add 1 tbsp bleach to Contact Customer Service upper pan monthly to kill mold... - Page 23 THIS PAGE IS INTENTIONALLY LEFT BLANK 4421 Tradition Trail ● Plano, Texas 75093 ● 972 -964-2700 ● 800-836-7472 URL: www.iscenclosurecooling.com ● Email: iscinfo@iscsales.com SP-ENG-210-100-06 Rev 1.9 23 | P a g e...
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Page 24: Electrical Schematic
Electrical Schematics System Schematic Controller Digital Controller Schematic Note: Schematics apply to all voltages; optional accessories wiring not provided in this document. If you require electrical schematic with options contact our technical support and provide your model number. 4421 Tradition Trail ● Plano, Texas 75093 ● 972 -964-2700 ● 800-836-7472 URL: www.iscenclosurecooling.com ●... -
Page 25: Warranty Information
Warranty Information ISC products are warranted to be free of defects in workmanship, materials and components. The warranty period applies from date of shipment for one year. Replacement components have a one year warranty period, except for hermetic system components, which have a 90 day warranty period. The above warranty applies when the equipment is operated under the following conditions: ... -
Page 26: Return Material Authorization (Rma) Procedure
Out of Warranty Repair If your Delta-T air conditioner is out of warranty and requires repair, simply call ISC Customer Service at (800)- 836-7472 for an RMA number. Customer Service will help you determine what repairs or parts are needed and, if possible, an estimate of the cost. -
Page 27: Appendix A - Power Terminal Block
Appendix A Phoenix Contact Power Connector Instructions Scope: Instructions for connecting power wires to air conditioners equipped with a “Phoenix Contact” power connector. 1 - Remove cover from chassis using T25 Torx bit to remove locking screw and then sliding cover to release mounting tabs from the chassis.
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