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Summary of Contents for Delta-T RZ-04A-D48 Series
- Page 1 User & Technical Manual RZ-04A-D48 Series Rev 2.3...
- Page 2 Title: RZ-04A-D48 Air Conditioner Technical Manual Department: Engineering Objective: To provide important information for maintenance, diagnostics and advance operations of the ISC RZ-04A-D48, 48 VDC Series Air Conditioners. Revision History: Date Owner Description of Changes 06-22-2015 B. Slotnick Initial Release 07-28-2015 B.
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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
1,000 to 20,000 BTUH. This manual will guide you through the installation, maintenance, diagnostics and advance operations of the RZ-04A-D48 Series Air Conditioners. This manual contains important information for the end- user who installs, maintains and/or operates the RZ-04A-D48 Air Conditioner. -
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: Preliminary Testing
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: 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 8: Unit Specifications
Unit Specifications The following table provides electrical and refrigeration specifications for the RZ-04A-D48 Series Air Conditioners. RZ-04A-D48 Series Nominal Capacity Rating: 4,000 BTUH Standard Maximum Ambient: 131°F Unit Weight: 103 lbs. Operating Loading SCCR Recommended KVA Rating Refrigerant Refrigerant Low/High... - Page 9 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-D48-06 Rev 2.3 P a g e...
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Page 10: Options
Options The RZ-04A-D48 Series Air Conditioners may be ordered with the following options. Review the list below for the specifications and functions of the option(s) that apply to your unit. Dry Contact This option provides an early warning capability to your enclosure to aid in the protection of your expensive equipment. - Page 11 Celsius Programming Celsius Programming option allows the user to control the ISC 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. These external heaters are ideal for focusing on individual sections of the enclosure without having a large capacity Built-in Heater.
- Page 12 Open Door Kill Switch This option provides you with an adjustable and mountable safety switch for your electronics enclosure. This switch will disable power to the air conditioner when your electronics enclosure door is open allowing you to work on your enclosure without the risk of unintentionally powering the unit. Adjustable Temperature Probe The adjustable temperature probe provides you with a 12’...
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Page 13: 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 14 Note: The set value is stored even when the procedure is exited by waiting for the time -out to expire. HOW TO ACCESS HIDDEN MENU 1…….. Enter the Programming mode by pres sing the SET + DOWN arrow keys simultaneously for 3 seconds. The “F”...
- Page 15 Heater 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 16: 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 4421 Tradition Trail ●... -
Page 17: 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 using the power on/off switch and disconnect power from unit. -
Page 18: 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 Verify Power On/Off requirements as Connected? Switch is on position... - Page 19 Measure Temperature at Evaporator Is evaporator Is Compressor Unit Not Cooling & Verify Heat Load Requirements. Is Fan on? unit capacity adequate for inte rnal 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 20 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 21: 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 22 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-D48-06 Rev 2.3 22 | P a g e...
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Page 23: Electrical Schematic
Electrical Schematics System Schematic Drawing: 51201 -D48 Rev D RZ-04A-D 48 Cool Only 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 ●... -
Page 24: Warranty Information
Warranty Information ISC products are warranted to be free of defects in workmanship, materials and components. The w arranty 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 25: 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 26: Appendix A - Power Connector
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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