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Installation, Operation,
and Maintenance
Packaged Rooftop Air Conditioners —
Precedent™ with eFlex™ Technology
Gas/Electric
3 to 5Tons – 60 Hz
Model Numbers
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing
of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and
training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags,
stickers, and labels that are attached to the equipment.
August 2015
YZC036E
YZC048F
YZC060E
SAFETY WARNING
RT-SVX46C-EN
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Table of Contents
Troubleshooting
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Summary of Contents for Ingersoll-Rand YZC036E
- Page 1 Packaged Rooftop Air Conditioners — Precedent™ with eFlex™ Technology Gas/Electric 3 to 5Tons – 60 Hz Model Numbers YZC036E YZC048F YZC060E SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
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Page 2: Introduction
Introduction Read this manual thoroughly before operating or servicing this unit. WARNING Warnings, Cautions, and Notices Proper Field Wiring and Grounding Required! Safety advisories appear throughout this manual as Failure to follow code could result in death or serious required.Your personal safety and the proper operation of injury. -
Page 3: Copyright
Introduction Copyright This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission.Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change. -
Page 4: Table Of Contents
Table of Contents Introduction Combination Gas Electric Air Conditioner .47 ......2 Warnings, Cautions, and Notices . -
Page 5: Model Number Description - 3 To 5 Ton
Model Number Description - 3 to 5 Ton Digit 1 - Unit Type Digit 14 - Fresh Air Selection Digit 19 - Disconnect/Circuit Breaker (three-phase only) DX Cooling, Gas Heat No Fresh Air Economizer, Dry Bulb 0-100% No Disconnect/No Circuit Breaker Digit 2 - Efficiency without Barometric Relief Unit Mounted Non-Fused... - Page 6 Model Number Description - 3 to 5 Ton Digit 31 - Advanced Unit Controls Standard Unit Controls Human Interface Model Number Notes 1. Standard on all eFlex™ and eDrive™ units. 2. Economizer with Barometric Relief is for downflow configured units only. Order Economizer without Barometric Relief for horizontal configuration.
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Page 7: General Information
General Information Unit Inspection Compressor Nameplate The nameplate for the compressors are located on the side As soon as the unit arrives at the job site of the compressor. • Verify that the nameplate data matches the data on the Microchannel Condenser Barcode ID sales order and bill of lading (including electrical data). - Page 8 General Information Duct Mounted Relative Humidity Sensor approximately 0.8' w.c. and open when the differential falls to 0.7" w.c. (BAYSENS037*) Compressor Disable (CPR1/2) Field installed, duct mounted humidity sensor is used to control activation of Enhanced Dehumidification and the This input incorporates the low pressure control (LPC) of hot gas reheat dehumidification options.
- Page 9 General Information sheet metal duct. Each kit contains two sensors.The return • The power supply circuit is not balanced with the air duct sensor (X1310004001) is set to open at 135ºF .The proper phase sequence of L1, L2, L3 for the 3 supply air duct sensor (X1310004002) is set to open at conductors of a 3 phase circuit.
- Page 10 General Information sensing, supply air temperature sensing, remote temperature to a varying discharge air temperature temperature sensing (uncovered).Wiring procedures vary setpoint in order to maintain space temperature. according to the particular application and equipment Smoke Detector Sensor (Optional) involved. Refer to the unit’s wiring diagrams for proper connections.
- Page 11 General Information locked out until a reset is initiated either manually or through ICS. System Input Devices & Functions The RTRM must have a zone sensor or thermostat input in order to operate the unit.The flexibility of having several mode capabilities depends upon the type of zone sensor or thermostat selected to interface with the RTRM.
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Page 12: Unit Dimensions
3’0” 4. Addition clearance required when 914 MM barometric damper or economizer is installed. 3’0” 914 MM Note 4 12” 12 1/2” 16 3/4” 305 MM 318 MM 426 MM 9 1/8” 232 MM YZC048F, YZC060E Units YZC036E Units RT-SVX46C-EN... - Page 13 Unit Dimensions Figure 2. 3 tons ultra high efficiency Notes: 1. All dimensions are in inches/millimeters. 2. ½ NPT Gas Connection Top Panel Evaporator Section Access Panel Condenser Fan 36 1/4” 921 MM 4 1/4” 108 MM Alternate Condensate Drain 3/4 - 14 NPT Dia.
- Page 14 Unit Dimensions Figure 4. 3 tons ultra high efficiency - unit clearance and roof opening Note: All dimensions are in inches/millimeters. Clearance 36” (914 MM) Clearance Horizontal Flow - 18” (457 MM) Downflow - 36” (914 MM) Typical Roof Opening Clearance from Top of Unit 72”...
- Page 15 Unit Dimensions Figure 6. 4 to 5 tons ultra high efficiency - roof curb Note: All dimensions are in inches/millimeters. 18 1/4” (470 MM) 6 5/8” (168 MM) 80 1/2” 14” 18 1/2” (2045 MM) 83 7/8” 356 MM (470 MM) (2130 MM) 1 3/4”...
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Page 16: Installation
Installation Pre-Installation WARNING Improper Unit Lift! WARNING Test lift unit approximately 24 inches to verify proper Fiberglass Wool! center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level. Failure to Product contains fiberglass wool. Disturbing the properly lift unit could result in unit dropping and insulation in this product during installation, possibly crushing operator/technician which could... - Page 17 Corner Weights Center of Gravity (in.) Tons Model No. Shipping Length Width YZC036E YZC048F YZC060E (a) Weight are approximate for 1st 10 digit model number. (b) Corner weights are given for information only. Figure 9. Rigging and center of gravity...
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Page 18: Foundation
Installation Foundation Figure 11. 4, 5 tons ultra high efficiency - horizontal supply & return air openings Horizontal Units 3 7/8” If the unit is installed at ground level, elevate it above the 98 MM snow line. Provide concrete footings at each support location with a “full perimeter”... -
Page 19: Roof Curb
Installation Elbows with turning vanes or splitters are recommended Recommendations for installing the supply air and return to minimize air noise due to turbulence and to reduce static air ductwork joining the roof curb are included in the curb pressure. instruction booklet. -
Page 20: General Unit Requirements
Make switch is shipped attached to the combustion sure that the gasket on the curb is not damaged while blower housing:YZC036E**(M,Y),YZC048F**(L,X) positioning the unit. direct drive ID motor. If any of the aforementioned units are installed in the down... -
Page 21: Tco-1 Instructions
1 through 3 and go on to next step in the installation process. Unit Model Number Remove YZC048F** (L,X),YZC036E** (M,Y) direct drive ID motor. 3 Screws Figure 16. TCO1 location (YZC036E) Location of TC01 Limit for the YZC036E... -
Page 22: Main Electrical Power Requirements
Installation Note: Refer Figure 18, p. 22 Figure 19, p. 22 step 2. Refer to Figure 18, p. 22. ForYZC048F and screws location. YZC060E units secure the tab on left side to the indoor coil block off with one of the screws removed in step 2 Figure 18. - Page 23 Installation Through-the-Base Gas Installation piping in excess of 0.50 psig or 14" W.C. to prevent component failure. The gas supply line must extend 4⅝” above the base pan. • Drip leg Installed in the gas piping near the unit. The “Through-the-Base Gas” kit is located in the Heat Vestibule compartment.To gain access to the kit, remove •...
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Page 24: Filter Installation
Installation 7. Slide the condensate drain pan back into the unit, align Refer to the unit Service Facts (shipped with each unit) for the drain support with the grommeted opening in the filter requirements. rear support panel and push until the support is seated Note: Do not operate the unit without filters. - Page 25 Installation Figure 22. All ultra high efficiency units WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury. Standard Wiring 1.
- Page 26 Installation • Table 4, p. 26 lists the conductor sizing guidelines that Figure 23. ReliaTel™ options module must be followed when interconnecting the DC binary output devices and the system components utilizing a SPC PRESS DB SPC PRESS DC analog input/output signal to the unit. DA HEAT Note: Resistance in excess of 2.5 ohms per conductor can cause deviations in the accuracy of the controls.
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Page 27: Space Temperature Averaging
Installation Figure 26. ReliaTel™ control customer low voltage routing (all units) Communication Refrigeration Communication Refrigeration Interface Module Interface Module Unpowered Convenience Outlet ReliaTel Conventional Wiring ReliaTel Route Field Wiring as shown TBU Wiring Secure Field and Secure with 2 Wire Ties Route Field Wiring as shown Installed Wiring and Secure with 3 Wire Ties... - Page 28 Installation Figure 28. Typical field wiring diagrams for optional controls (ReliaTel™ only) BAYSENS075* BAYSENS075* BAYSENS108* BAYSENS106* BAYSENS110* BAYSENS119* BAYSENS073* BAYSENS074* BAYSENS075* ASYSTAT669A OPTIONAL REMOTE SENSOR RT-SVX46C-EN...
- Page 29 Installation Table 5. Temperature vs. resistance Table 7. Iron pipe size (SI) millimeters Temperature Iron Pipe Size (SI) Millimeters Degrees F° Degrees C° Nominal Resistance Length of Pipe 15 mm 20 mm 25 mm 32 mm 40 mm -20° -28.9° 170.1 K - Ohms (Meters) Pipe...
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Page 30: Pre-Start
Pre-Start Use the checklist provided below in conjunction with the and record the voltage between phases 1, 2, and 3 and “General Unit Requirements” checklist to ensure that the calculate the amount of imbalance as follows: unit is properly installed and ready for operation. 100 x AV - VD % Voltage Imbalance= where;... - Page 31 Pre-Start phase monitor will verify proper phasing. If LED on face of the monitor is red, correct supply power face of the monitor is red, correct supply power fault. fault. WARNING WARNING Live Electrical Components! Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to During installation, testing, servicing and work with live electrical components.
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Page 32: Test Modes
Pre-Start Table 8. Service test guide for component operation Test Step Mode Econ Comp 1 Comp 2 Heat 1 Heat 2 Resistance Output Minimum Position Setpoint 0% Ω 2.2K Minimum Selectable Ventilation Economizer Ω Open 3.3K Test Open Cool Minimum Ω... -
Page 33: Unit Start-Up
Unit Start-Up Verifying Proper Air Flow demand decisions will function as described in the “Default Operation” section above with the exception of the supply fan speed when the unit has an active cooling demand and the economizer is enthalpy enabled. WARNING Heating Operation Live Electrical Components! - Page 34 Unit Start-Up Light Commercial applications, supply air “Auto” mode or switched to the “Cooling” mode, the unit temperature should not be set below 50°F . will revert to the cooling operation. If an occupied “Heating” mode is selected, the unit will Zone Temperature Control without a Night only function within the DWU perimeters until the system Setback Panel or ICS - Unoccupied Cooling...
- Page 35 Unit Start-Up electromechanical test mode connections (if Once the ignition system and components have been applicable). checked, open the main power disconnect switch to reset the unit. Compressor Start-Up Dip Switch Settings 1. Attach a set of service gauges onto the suction and discharge gauge ports for each circuit.
- Page 36 Unit Start-Up • Verify that all exterior panels including the control panel doors and condenser grilles are secured in place. • Close the main disconnect switch or circuit protector switch that provides the supply power to the unit’s terminal block or the unit mounted disconnect switch. RT-SVX46C-EN...
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Page 37: Maintenance
Maintenance Cooling Season WARNING • Check the unit’s drain pans and condensate piping to Rotating Components! ensure that there are no blockages. During installation, testing, servicing and • Inspect the evaporator and condenser coils for dirt, troubleshooting of this product it may be necessary to bent fins, etc. - Page 38 Maintenance and terminal connections, as well as damaged wire Note: For more details on Microchannel coil cleaning, insulation. Make any necessary repairs. please refer to bulletin RT-SVB83*-EN. • Clean burner area, verify gas heat system operates Round Tube Plate Fin (RTPF) Coils properly.
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Page 39: Annual Maintenance
Maintenance Annual Maintenance 7. Rinse both sides of the coil with cool, clean water. 8. Inspect both sides of the coil; if it still appears to be • Clean and repaint any corroded surface. dirty, repeat Step 6 Step 9. Reinstall all of the components and panels removed in Final Process Step 1 and any protective covers installed in... -
Page 40: Troubleshooting
Troubleshooting ReliaTel™ Control you may leave the system in that mode for up to one hour while troubleshooting. Refer to the sequence of operations for each mode, to assist in verifying proper The RTRM has the ability to provide the service personnel operation. - Page 41 Troubleshooting System Failure the previous section for the recommended troubleshooting procedure. • Measure the voltage between terminals J6-9 & J6-6. Heating Failure • Normal Operation = approximately 32 VDC • System Failure = less than 1 VDC, approximately 0.75 Verify Heat Failure by Ignition Module (IGN) LED indicator: OFF: No Power or Failure •...
- Page 42 Troubleshooting selection switch to the desired mode, i.e. Heat, Cool or Sensor. Below are some typical indoor temperatures, and Auto. corresponding resistive values. Method 2 Test 2 - Cooling Set Point (CSP) and Heating Set Point (HSP) To reset the system at the unit, cycle the unit power by turning the disconnect switch “Off”...
- Page 43 Troubleshooting Relative Humidity Sensor Test Unit Operation without a Zone Sensor This component is measured by measuring the mA output This procedure is for temporary operation only.The signal on the Relative Humidity Sensor. Verify accuracy of economizer and condenser fan cycling functions are the sensor annually.
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Page 44: Unit Economizer Control (Eca) Troubleshooting
Troubleshooting Table 11. Fault detection and diagnostic codes Primary Fault Codes Information Code Temp Mixed Air Outdoor Pressure Space Unit Economizer RTEM Sensor Airflow Unit Fails Damper Temp Temp Dead band Press Dead Economizing Failures Actuator Comm Fail Sensor Fail Position % Sensor Sensor... - Page 45 Troubleshooting Compressor Inverter Drive • 2 Flashes: CO Sensor • 3 Flashes: RA Humidity Sensor Refer to RT-SVD05*-EN (for VF-S15 inverters, refer to RT- • 4 Flashes: RATemp Sensor SVD007*-EN) for compressor inverter drive troubleshooting information. • 5 Flashes: OA Quality Sensor •...
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Page 46: Unit Wiring Diagrams Numbers
Unit Wiring Diagrams Numbers Note: Wiring diagrams can be accessed using e-Library by entering the diagram number in the literature order number search field or by contacting technical support. Table 13. Unit wiring diagram numbers Schematic Type Drawing Number Description Diagram Controls YZC(036E, 048F, 060E4) - 4366-8324-0110 Ultra High Efficiency... -
Page 47: Limited Warranty
Limited Warranty Combination Gas Electric Air limited solely to the purchase price of the equipment under warranty shown to be defective. Conditioner THE WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES AND LIABILITIES, YZC (Parts Only) WHETHER IN CONTRACT OR IN NEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR IN FACT, INCLUDING IMPLIED Models Less Than 20 Tons for Commercial... - Page 48 The manufacturer optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy efficient environments,the manufacturer offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.IRCO.com.
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