Table of Contents
Advertisement
Installation, Operation,
and Maintenance
Packaged Rooftop Air Conditioners
Precedent™ — Gas/Electric
3 – 10Tons – 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.
September 2013
YSC037E - YSC067E
YSC036E - YSC060E
YSC072F - YSC120F
YHC048F - YHC060F
SAFETY WARNING
RT-SVX21N-EN
YHC037E - YHC067E
YHC036E - YHC072E
YHC120E
YHC072F - YHC102F
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Trane YSC037E
Summary of Contents for Trane YSC037E
- Page 1 Installation, Operation, and Maintenance Packaged Rooftop Air Conditioners Precedent™ — Gas/Electric 3 – 10Tons – 60 Hz YSC037E - YSC067E YHC037E - YHC067E Model Numbers YSC036E - YSC060E YHC036E - YHC072E YSC072F - YSC120F YHC120E YHC048F - YHC060F YHC072F - YHC102F SAFETY WARNING Only qualified personnel should install and service the equipment.
-
Page 2: Important Environmental Concerns
Responsible Refrigerant Practices! Wiring Matrix • 5GIII update - Cooling and Gas/Electric -T/YHC120 Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air • Human Interface - 5 inch ColorTouchscreen conditioning industry. All technicians who handle RT-SVX21M-EN (12 July 2013) refrigerants must be certified.The Federal Clean Air Act... -
Page 3: Table Of Contents
Table of Contents Model Number Description ReliaTel™ Control .....58 ....4 System Status Checkout Procedure . -
Page 4: Model Number Description
Enthalpy 0-100% without Options DX Cooling, Gas Heat Barometric Relief No Communications Interface Digit 2 - Efficiency Economizer, Comparative Trane Communications Interface Enthalpy 0-100% with Barometric Standard Efficiency LonTalk® Communications Interface Relief High Efficiency Trane Communications Interface Digit 15 - Supply Fan/Drive Type/ Digit 3 - Airflow LonTalk®... -
Page 5: Horizontal Discharge Conversion
Model Number Description Overflow Switch 7. Economizer with Barometric 19. Novar Sensor utilized with Clogged Filter Switch , Discharge Relief is for downflow configured Digit 21 = (4) Novar 3051 Controls Air SensingTube and Condensate units only. Order Economizer without Zone Sensor. Drain Pan Overflow Switch without Barometric Relief for Fan Failure Switch, Discharge Air... -
Page 6: Model Number Description - 17 Plus
4Ton Options Enthalpy 0-100% without 5Ton Barometric Relief No Communications Interface Digit 7 - Major Design Sequence Economizer, Comparative Trane Communications Interface Enthalpy 0-100% with Barometric LonTalk® Communications R-410A Refrigerant Relief Interface Digit 8 - Voltage Selection Novar 2024 Controls... -
Page 7: Model Number Notes
Model Number Description - 17 Plus Clogged Filter Switch disconnect/circuit breaker Condensate Drain Pan Overflow options. Switch 7. Requires use of Disconnect or Fan Failure Switch and Condensate Drain Pan Overflow Switch Circuit Breaker. Discharge Air Sensing Not Available Condensate Drain Pan Overflow High Efficiency Switch 3-5 ton w/Standard Indoor Motor w/460V... -
Page 8: General Information
General Information Unit Inspection Compressor Nameplate As soon as the unit arrives at the job site The nameplate for the compressors are located on the side of the compressor. • Verify that the nameplate data matches the data on the sales order and bill of lading (including electrical data). - Page 9 FFS (Fan Failure Switch) If air flow through the unit is not is powered by 24 VAC. proven by the differential pressure switch connected to the RTCI - ReliaTel™ Trane Communication RTOM (factory set point 0.07 “w.c.) within 40 seconds Interface (Optional)
-
Page 10: Low Pressure Control
General Information Compressor Disable (CPR1/2) Power Exhaust Control (Optional) This input incorporates the low pressure control (LPC) of ReliaTel™ Control each refrigeration circuit and can be activated by opening The power exhaust fan is started whenever the position of a field supplied contact installed on the LTB. the economizer dampers meets or exceed the power If this circuit is open before the compressor is started, the exhaust setpoint when the indoor fan is on. -
Page 11: Evaporator Frost Control
(X1310004001) is set to open at 135ºF .The timed override with override cancellation. It is used with a supply air duct sensor (X1310004002) is set to open at Trane Integrated Comfort™ building management 240ºF .The control can be reset after the temperature has system. -
Page 12: Phase Monitor
General Information closing a field supplied contact installed in parallel with Maintenance Instructions provided with the literature the FOS. package for this unit. If this circuit is closed before the compressor is started, the In order for the supply air smoke detector or return air compressor will not be allowed to operate. -
Page 13: Unit Dimensions
Unit Dimensions Figure 1, p. 13 illustrates the minimum operating and Providing less than the recommended clearances may service clearances for either a single or multiple unit result in condenser coil starvation, “short-circuiting” of installation.These clearances are the minimum distances exhaust and economizer airflows, or recirculation of hot necessary to assure adequate serviceability, cataloged condenser air. - Page 14 Unit Dimensions Figure 2. 3-5 ton standard efficiency, 3 ton high efficiency Notes: 1. All dimensions are in inches/millimeters. 2. ½ NPT Gas Connection Figure 3. 3-5 ton standard efficiency, 3 ton high efficiency - roof curb Note: All dimensions are in inches/millimeters. 44 MM 44 MM 1038...
- Page 15 Unit Dimensions Figure 4. 3-5 ton standard efficiency, 3 ton high efficiency - unit clearance and roof opening Note: All dimensions are in inches/millimeters. CLEARANCE 36” (914 MM) Figure 5. 6, 7½ (single) ton standard efficiency, 4-5 ton high efficiency Note: All dimensions are in inches/millimeters.
- Page 16 Unit Dimensions Figure 6. 6, 7½ (single) ton standard efficiency, 4-5 ton high efficiency - roof curb Note: All dimensions are in inches/millimeters. (356 MM) (2130 MM) Figure 7. 6, 7½ (single) ton standard efficiency, 4-5 ton high efficiency - unit clearance and roof opening Note: All dimensions are in inches/millimeters.
- Page 17 Unit Dimensions Figure 8. 7½ ton (dual) - 10 ton standard efficiency, 6 - 8½ (MCHE) ton high efficiency, 6 ton dehumidification Note: All dimensions are in inches/millimeters. (TC MODELS) 2” ELECTRICAL CONNECTION (SINGLE POINT POWER WHEN HEAT INSTALLED) 1/2 NPT GAS CONNECTION (80 mbh, 120 mbh) 3/4 NPT GAS CONNECTION (150 mbh, 200 mbh, 250 mbh)
- Page 18 Unit Dimensions Figure 10. 7½ ton (dual) - 10 tons standard efficiency, 6 - 7½ (MCHE) ton high efficiency, 6 ton dehumidification unit clearance and roof opening Note: All dimensions are in inches/millimeters. Figure 11. 10 ton high efficiency Notes: 1.
- Page 19 Unit Dimensions Figure 12. 10 ton high efficiency - roof curb Notes: 1. All dimensions are in inches/millimeters. 18 1/2” (470 MM) 6 5/8” 83 7/8” (168 MM) 1” (2130 MM) (25 MM) 34 3/8” 56 3/8” (873 MM) (1432 MM) 18 1/2”...
-
Page 20: 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 21 Installation Table 1. Maximum unit & corner weights (lbs) and center of gravity dimensions (in.) - gas/electric models Maximum Model Weights Corner Weights Center of Gravity (in.) Unit Tons Model No. Shipping Length Width YSC036E/YHC036E YSC048E YSC060E YSC072F 7½ YSC090F 7½...
-
Page 22: Foundation
Installation (a),(b) Table 2. Factory installed options (fiops)/accessory net weights (lbs) YSC036E-060E YHC047E-067E YSC072F-102F YHC092F-102F, YHC036E,YHC037E YHC048F-060F YHC072E/F YSC120F YHC120E Net Weight Net Weight Net Weight Net Weight Net Weight Accessory 3-5 T 4-5 T 6-8½ T 7½, 8½, 10 T 10 T Barometric Relief Belt Drive Option (3 phase only) - Page 23 Installation Figure 17. 4-6 ton high efficiency units, 7½-8½ Figure 19. 3-5 ton standard efficiency units & 3 ton high (Microchannel) high efficiency unit and 6-10 efficiency units - Down flow supply & return air ton standard efficiency units - horizontal openings w/ through-the-base utilities supply &...
-
Page 24: Roof Curb
Installation Roof Curb Figure 22. View for base to roof curb alignment YHC120E on 50" x 84" roof curb Downflow The roof curbs for these units consists of a “full perimeter” enclosure to support the unit just inside of the unit base rail.The 10 ton high efficiency units contain a support base alignment rail and will extend past the end of the roof curb as shown in figures below. -
Page 25: General Unit Requirements
Installation A Rigging illustration and Center-of-Gravity dimensional Figure 25. Fork pockets - 10 ton high efficiency unit data table is shown in Figure 15, p. 21. Refer to the typical unit operating weights table before proceeding. 3. Remove all drill screws fastening wood protection to metal base rail. -
Page 26: Heat Units
Installation Temperature Limit Switch Usage for Gas motor,YHC060E/F**(L,X) belt drive ID, YHC036E**(M,Y),YHC037E**(M,Y),YHC048E/ Heat Units F**(M,Y),YHC060E/F**(M,Y) direct drive ID motor, Units are factory shipped in the down flow discharge YHC036E**(H,Z),YHC048E/F**(H,Z) belt drive ID configuration but can be field converted to a horizontal motor,YHC060E/F**(H,Z),YSC072F**(H,Z), discharge configuration. -
Page 27: Ton Units)
Installation Horizontal Discharge Conversion motor,YHC036E**(M,Y),YHC037E**(M,Y),YHC048E/ F**(M,Y),YHC060E/F**(M,Y) direct drive ID motor, (3 Through 5 Ton Units) YHC036E**(H,Z),YHC048E/F**(H,Z) belt drive ID motor, YHC060E/F**(H,Z). Note: 3 - 5 ton units supply cover to supply opening and Figure 27. TCO1 location (YSC036E-YSC060E, YHC036E, return cover to return opening. YHC037E) Supplies needed by installer for conversion: 3 oz. -
Page 28: Tco1 Instructions
Installation 3. Using self-drilling screws, (or screws removed from 6. After completing installation of the duct covers for duct cover), screw through dimples to attach DUCT horizontal discharge, proceed toTCO-1 instructions. COVER to base. Figure 31. Supply and return covers Figure 28. -
Page 29: Return Air Smoke Detector
Installation Figure 32. TCO1 location (YHC120E) Figure 34. Horizontal view 1 TCO1 limit is located above the burner on the YHC120E models Replace original factory installed TCO1 with optional TCO1 attached to blower housing for field convertion to horizontal discharge Return Air Smoke Detector The factory installed Return Air Smoke Detector is installed in the downflow discharge position. -
Page 30: Main Electrical Power Requirements
Installation Through-the-Base Gas 120F ,YHC120E andYHC072F-102F units secure the tab on left side to the indoor coil block off with one of the Installation screws removed in step 2 and secure the right side of the bracket with one of the screws removed from the The gas supply line must extend 4⅝”... -
Page 31: Condensate Drain Configuration
Installation • All gas piping joints properly sealed. 4. Place on a level surface in the position it was removed from the unit. • Gas piping leak checked with a soap solution. If piping connections to the unit are complete, do not pressurize 5. -
Page 32: Filter Installation
Installation Filter Installation Main Unit Power The quantity of filters is determined by unit size. Access to the filters is obtained by removing the filter access panel. WARNING Refer to the unit Service Facts (shipped with each unit) for Proper Field Wiring and Grounding filter requirements. -
Page 33: Controls Using 24 Vac
Installation Control Power Transformer the building entering the electrical enclosures.Also seal around conduit and wiring at all roof and curb The 24 volt control power transformers are to be used only penetrations. with the accessories called out in this manual. Figure 38. - Page 34 Installation Table 5. Electromechanical thermostat 24V AC Figure 40. Typical field wiring diagrams for conductors with electromechanical unit electromechanical Distance from Unit to Control Recommended Wire Size 0 - 30 feet 22 gauge 0 - 9.1 m .33 m2 31 - 50 feet 20 gauge 9.5 - 15.2 m .50m2...
- Page 35 Installation Figure 43. ReliaTel™ relative humidity sensor Figure 44. ReliaTel™ humidistat (dehumidification (dehumidification option) option) Figure 45. Electromechanical control customer low voltage routing (all units except 10 ton high efficiency) Figure 46. ReliaTel™ control customer low voltage routing (all units except 10 ton high efficiency) RT-SVX21N-EN...
- Page 36 Installation Figure 47. ReliaTel™ (without TBUE) control customer wire routing (10 ton high efficiency) Figure 48. ReliaTel™ (with TBUE) control customer wire routing (10 ton high efficiency) RT-SVX21N-EN...
- Page 37 Installation Figure 49. Electromechanical (without TBUE) control customer wire routing (10 ton high efficiency) Figure 50. Electromechanical (with TBUE) control customer wire routing (10 ton high efficiency) RT-SVX21N-EN...
-
Page 38: Smoke Detector Customer Low Voltage Wir
Installation Smoke Detector Customer Low Figure 52. Up to 10 HVAC units If you have more than 5 HVAC units, you can connect all Voltage Wiring the supplies together on one power supply (up to 10 HVAC units), and all the returns together (up to 10 HVAC When interlocking APC Sensor smoke detectors together, units) on another power supply. - Page 39 Installation Figure 53. Examples RT-SVX21N-EN...
- Page 40 Installation Figure 54. Typical field wiring diagrams for optional controls (ReliaTel™ only) BAYSENS075* BAYSENS075* BAYSENS108* BAYSENS106* BAYSENS110* BAYSENS119* BAYSENS073* BAYSENS074* BAYSENS075* ASYSTAT669A OPTIONAL REMOTE SENSOR RT-SVX21N-EN...
- Page 41 Installation Table 7. Temperature vs. resistance Table 9. 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...
-
Page 42: Pre-Start
Pre-Start Use the checklist provided below in conjunction with the within the proper tolerances, notify the power company to “General Unit Requirements” checklist to ensure that the correct this situation before operating the unit. unit is properly installed and ready for operation. Excessive three phase voltage imbalance between phases will cause motors to overheat and eventually fail.The WARNING... - Page 43 Pre-Start • Close the field supplied main power disconnect switch Close the main power disconnect switch and the unit or circuit protector switch that provides the supply mounted disconnect switch, if applicable. power to the unit. Note: Upon closing main power disconnect and the unit Note: Upon closing main power disconnect and the unit mounted disconnect switch or circuit breaker, the mounted disconnect switch or circuit breaker, the...
-
Page 44: Test Modes
Pre-Start Table 10. Service test guide for component operation Test Multi-Speed Fan Step Mode Econ Comp 1 Comp 2 Heat 1 Heat 2 Resistance Output Output Minimum Position Setpoint 0% Ω 2.2K Minimum Selectable Ventilation Economizer Ω Open 3.3K Test Open Cool Minimum Ω... - Page 45 Pre-Start Electromechanical Controls Test Procedure See unit schematic for correct wire numbers. Fan Test and Minimum Ventilation Connect red thermostat wire (R) to black thermostat wire (G). Economizer Cooling Connect a jumper wire across OTS on Economizer Control (ECA). Connect red thermostat (R) wire to yellow thermostat wire (Y1).
-
Page 46: Unit Start-Up
Unit Start-Up Verifying Proper Air Flow 1. Measure the supply and return duct static pressure and sum the resulting absolute values, 2. Use the accessory pressure drop table in the Service WARNING Facts, to calculate the total static pressure drop for all of the accessories installed on the unit;... - Page 47 Unit Start-Up direction of rotation is indicated by an arrow on the fan Economizer by disconnecting the 4 pin power connector housing. located at the base of the Economizer Control (ECA). With the fan operating properly, determine the total Using the ServiceTest Guide inTable 10, p. 60, system airflow (CFM) by (ReliaTel™/Electromechanical): momentarily jump across theTest 1 &Test 2 terminals on LTB1.
-
Page 48: Drive Indoor Fan
Unit Start-Up Once the supply fan has started, determine the total airflow supplied both to the space that is being system airflow (CFM) by (ReliaTel™/Electromechanical): conditioned and across the evaporator coil.The indoor fan provides a constant CFM base on voltage output for the 1. -
Page 49: Vhr Relay Output
Unit Start-Up Supply Air Temperature Control with an chart shown in Table 12, p. Table 12, p. 49 shows what DC voltage corresponds to CFM per ton of unit Economizer cooling. The economizer is utilized to control the supply air cooling Note: If 1200 cfm is required from a 3 ton unit at +1.5°F around the supply air temperature setpoint range (037) the R136 potentiometer should be... -
Page 50: Supply Air Temperature Reset
Unit Start-Up Daytime Warm-up (DWU) Control Example: Daytime Warm-up is applicable during occupied status Supply Duct Static setpoint = 2.0" w.c. (RTAM) and when the zone temperature is below the initiation Deadband = 0.2" w.c. (RTAM) temperature. It can be activated or deactivated through Duct Static Control Range = 1.9"... - Page 51 Unit Start-Up 4. Reset based on Outdoor AirTemperature - When DIP This will set the minimum damper position at an Switch #3 and #4 are “On” , a selectable supply air reset intermediate point of fan operation range of damper setpoint of 0°F to 100°F via RTAM potentiometer or for this setting is 0-75%.
-
Page 52: Dehumidification Option
Unit Start-Up leads (at the compressorTerminal block) to check the internal phasing. If the compressor runs WARNING backward for an extended period (15 to 30 minutes), Rotating Components! the motor winding can overheat and cause the motor winding thermostat to open. During installation, testing, servicing and troubleshooting of this product it may be necessary to 2. - Page 53 Unit Start-Up operating the unit in each of its Modes through all available stages of cooling & heating), perform these final checks before leaving the unit: • Program the Night Setback (NSB) panel (if applicable) for proper unoccupied operation. Refer to the programming instructions for the specific panel.
-
Page 54: Maintenance
Maintenance Fan Belt Adjustment - Belt Drive 7. Recheck the belt tension at least twice during the first 2 to 3 days of operation. Belt tension may decrease Units until the new belts are “run in” . Figure 57. Belt tension gauge WARNING Rotating Components! During installation, testing, servicing and... -
Page 55: Heating Season
Maintenance insure that airflow through the unit is adequate for proper system superheat. For guidelines, refer to the sampling by the return air smoke detector, complete “Compressor Start-Up” section. adherence to the maintenance procedures, including Important: Do not release refrigerant to the recommended intervals between filter changes, and coil atmosphere! If adding or removing cleaning is required. -
Page 56: Annual Maintenance
Maintenance Due to the soft material and thin walls of the MCHE coils, 4. Mix the detergent with water according to the the traditional field maintenance method recommended manufacturer’s instructions. If desired, heat the for RoundTube Plate Fin (RTPF) coils does not apply to solution BUT DO NOT EXCEED 150ºF maximum to microchannel coils. -
Page 57: Final Process
Maintenance Final Process Wiring Diagram Numbers (from unit control panel): For future reference, you may find it helpful to record the Connections: unit data requested in the blanks provided. Schematics: Complete Model Number: Unit Serial Number: Table 14. Sample maintenance log Refrigerant Circuit #1 Refrigerant Circuit #2 Suct. -
Page 58: 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 59: Resetting Cooling And Ignition Lockouts
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 Verify Heat Failure by Ignition Module (IGN) LED indicator: • System Failure = less than 1 VDC, approximately 0.75 OFF: No Power or Failure •... -
Page 60: Zone Temperature Sensor (Zts) Service Indi
Troubleshooting After approximately 30 seconds, turn the “Mode” Sensor Module electrically removed from the selection switch to the desired mode, i.e. Heat, Cool or system. Auto. Test 1 - Zone Temperature Thermistor Method 2 (ZTEMP) To reset the system at the unit, cycle the unit power by This component is tested by measuring the resistance turning the disconnect switch “Off”... -
Page 61: Unit Economizer Control (Eca) Troubleshoot
Troubleshooting ReliaTel™ Refrigeration Module (RTRM) leads for the opposite direction.The LED should have at least 100 times more resistance in reverse direction, as Default Chart compared with the forward direction. If high resistance in If the RTCI loses input from the building management both directions, LED is open. -
Page 62: Resetting Cooling And Ignition Lockouts
Troubleshooting Heating Failure 5 Flashes: OA Quality Sensor 6 Flashes: OA Humidity Sensor Verify Heat Failure by Ignition Module (IGN) LED indicator: 7 Flashes: OATemp Sensor • OFF: No Power or Failure 8 Flashes: MATemp Sensor • ON: Normal 9 Flashes: RAM Fault •... -
Page 63: Troubleshooting Procedures For Direct Drive
Troubleshooting Test 1 The resistance should be approximately 390 Ohms. Replace the Switch if it is open. Verifying that the economizer actuator (ECA) is functional: Replace the ECA if it is out of range. 1. Using the “Test Mode” described in the “System Start- Up”... -
Page 64: 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 17. Unit wiring diagram numbers Schematic Type Drawing Number Description 4366-7217 YHC(037-067) 4366-4571... - Page 65 Unit Wiring Diagrams Numbers Table 17. Unit wiring diagram numbers (continued) 4366-8254 YHC(092-120)E ReliaTel Controls, with Multi-Zone VAV 4366-1530 YSC(092,102)F (230V), ReliaTel Controls 230V 4366-7451 (YSC120,YHC092-102)F (230V), ReliaTel Controls YHC(092-102)F, YSC120F (230V), ReliaTel Controls with 4366-8255 Multi-Zone VAV 4366-8254 YHC(092-120)E ReliaTel Controls, with Multi-Zone VAV 4366-7341 YHC(037) (460V) 4366-8248...
-
Page 66: Limited Warranty
This limited warranty is extended byTrane to the original concerning this limited warranty, contact: purchaser and to any succeeding owner of the real Trane property to which the Combination Gas Electric Air Conditioner is originally affixed, and applies to products 2701 Wilma Rudolph Blvd. - Page 67 Trane 2701 Wilma Rudolph Blvd. Clarksville,TN 37040-1008 Attention: Manager, Product Service...
- Page 68 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.