Related Manuals for Trane WC*150B***G Series
Summary of Contents for Trane WC*150B***G Series
- Page 1 Installation Operation Maintenance Packaged Heat Pump Model Number WC*150B***G* WC*155B***G* WC*180B***G* WC*200B***G* WC*240B***G* WC-IOM-7 December 2004...
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Page 2: Warnings And Cautions
When ordering replacement parts or requesting service, be sure to refer to the specific model number and serial number printed on the unit nameplate. © 2008 Trane All rights reserved WC-IOM-7... - Page 3 WARNING Contains Refrigerant! System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before opening the system. See unit nameplate for refrigerant type. Do not use non-approved refrigerants, refrigerant substitutes, or refrigerant additives. Failure to follow proper procedures or the use of non-approved refrigerants, refrigerant substitutes, or refrigerant additives could result in death or serious injury or equipment damage.
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Page 4: Table Of Contents
..... . . 7 Economizer Control Actuator ReliaTel™ Control RTCI -- ReliaTel™ Trane Communication Interface (Optional) ... . . 7 . - Page 5 Contents ..........43 Cooling Season .
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Page 6: Model Number Description
180 = 15 tons standard efficiency 0B = Oversized motor 240 = 20 tons standard efficiency 0C = Downflow economizer/oversized motor 0F = Trane communications interface (TCI) Digit 7 - Major development sequence 0G = Downflow economizer/TCI Digit 11 - Minor design sequence... -
Page 7: General Information
It is capable of delivering up to 25 inch pounds of torque and is powered by 24 VAC. RTCI -- ReliaTel™ Trane Communication Interface (Optional) This module is used when the application calls for an ICSTM building management type control system. -
Page 8: Rlci - Reliatel™ Lontalk Communication Interface (Optional)
General Information ordered as a kit to be field installed. Follow the installation instruction that ships with each kit when field installation is necessary. RLCI - ReliaTel™ LonTalk Communication Interface (Optional) This module is used when the application calls for an ICSTM building management type control system that is LonTalk. -
Page 9: Low Pressure Control
General Information Compressor Disable (CPR1/2) This input incorporates the low pressure control (LPC) of each refrigeration circuit and can be activated by opening a field supplied contact installed on the LTB. If this circuit is open before the compressor is started, the compressor will not be allowed to operate. - Page 10 General Information Lead/Lag Control (Dual Circuit Only) Lead/Lag is a selectable input located on the RTRM. The RTRM is configured from the factory with the Lead/Lag control disabled. To activate the Lead/Lag function, simply cut the wire connected to J3-8 at the RTRM. When it is activated, each time the designated lead compressor is shut off due to the load being satisfied, the lead compressor or refrigeration circuit switches.
- Page 11 General Information Remote Zone Sensor (BAYSENS013C) This electronic sensor features remote zone sensing and timed override with override cancellation. It is used with a Trane Integrated ComfortTM building management system. Remote Zone Sensor (BAYSENS014C) This electronic sensor features single setpoint capability and timed override with override cancellation.
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Page 12: Unit Inspection
General Information Smoke Detector Sensor (Optional) This sensor is only applicable on units equipped with a RTOM. It provides high limit “shutdown” of the unit and requires a manual reset. The sensor is used to detect smoke due to fire in the air conditioning or ventilation ducts. Important: The supply and return air smoke detectors are designed to shut off the unit if smoke is sensed in the supply air stream or return air stream. -
Page 13: Storage
General Information Take photos of the damage, if possible. The owner must provide reasonable evidence that the damage did not occur after delivery. • Notify the appropriate sales representative before installing or repairing a damaged unit. WARNING Fiberglass Wool Product contains fiberglass wool. Disturbing the insulation in this product during installation, maintenance or repair will expose you to airborne particles of glass wool fibers and ceramic fibers known to the state of California to cause cancer through inhalation. -
Page 14: Unit Clearances
General Information The manufacturer will not assume any responsibility for equipment damage resulting from condensate accumulation on the unit’s electrical and/or mechanical components. Unit Clearances Figure 1 illustrates the minimum operating and service clearances for either a single or multiple unit installation. These clearances are the minimum distances necessary to assure adequate serviceability, cataloged unit capacity, and peak operating efficiency. -
Page 15: Unit Dimensions
Unit Dimensions Figure 1. Typical Installation Clearances for Single & Multiple Unit Applications WC-IOM-7 • Packaged Heat Pump... - Page 16 Unit Dimensions Figure 2. Unit Dimensional Data 12 1/2 Ton, 15 Ton Figure 3. Roof Curb Dimensional Data 12 1/2 Ton, 15 Ton Packaged Heat Pump • WC-IOM-7...
- Page 17 Unit Dimensions Figure 4. Unit Dimensional Data 20 Ton Figure 5. Roofcurb Dimensional Data 20 Ton WC-IOM-7 • Packaged Heat Pump...
- Page 18 Unit Dimensions Figure 6. Horizontal Duct Dimensional Data 12 1/2 Ton, 15 Ton Figure 7. Horizontal Duct Dimensional Data 20 Ton Packaged Heat Pump • WC-IOM-7...
- Page 19 Unit Dimensions WARNING Heavy Objects! Do not use cables (chains or slings) except as shown. Each of the cables (chains or slings) used to lift the unit must be capable of supporting the entire weight of the unit. Lifting cables (chains or slings) may not be of the same length. Adjust as necessary for even unit lift.
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Page 20: Rigging
Unit Dimensions Rigging Refer to Figure 8 Table 1 for typical unit operating weights riffing before proceeding. Remove the shipping crate from around the unit. Do not remove the crating from the top of the unit. 2. Rig the unit as shown in Figure 8. -
Page 21: Installation
Installation Foundation Horizontal Units If the unit is installed at ground level, elevate it above the snow line. Provide concrete footings at each support location with a “full perimeter” support structure or a slab foundation for support. Refer to Table 1 on page 19 for the unit’s operating and point loading weights when constructing a footing foundation. -
Page 22: Factory Installed Economizer
Installation personnel with what is required in the installation process. It does not replace the detailed instructions called out in the applicable sections of this manual. • Check the unit for shipping damage and material shortage; file a freight claim and notify appropriate sales representative. -
Page 23: Condensate Drain Configuration
Installation • Connect properly sized control wiring to the proper termination points between the zone thermostat and the unit control panel. Condensate Drain Configuration An evaporator condensate drain connection is provided on each unit. Refer to Unit Dimensions for the appropriate drain location. A condensate trap must be installed at the unit due to the drain connection being on the “negative pressure”... -
Page 24: Main Unit Power
Installation Note: All field installed wiring must conform to NEC guidelines as well as State and Local codes. Verify that the power supply available is compatible with the unit’s nameplate ratings. The available supply power must be within 10% of the rated voltage stamped on the nameplate. - Page 25 Installation 2. Provide proper grounding for the unit in accordance with local and national codes. Figure 10. Field Installed Control Wiring An overall layout of the various control options available with the required number of conductors for each control device is illustrated in Figure 8. Note: All field wiring must conform to NEC guidelines as well as state and local codes.
- Page 26 Installation The transformer is located in the control panel. The circuit breaker is located on the left side of the transformer and can be reset by pressing in on the black reset button. Controls using 24 VAC Before installing any connecting wiring, refer to Unit Dimensions for the electrical access locations provided on the unit and...
- Page 27 Installation Note: Resistance in excess of 2.5 ohms per conductor can cause deviations in the accuracy of the controls. 2. Ensure that the wiring between controls and the unit’s termination point does not exceed two and a half (2.5) ohms/conductor for the length of the run. 3.
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Page 28: Smoke Detector Customer Low Voltage Wiring
Installation Smoke Detector Customer Low Voltage Wiring When interlocking System Sensor smoke detectors together, all of the detectors must be powered from the same power supply. If multiple smoke detectors are required, all detectors must be disconnected from the HVAC unit power supply and connected together from another single source supply. - Page 29 Installation Figure 13. Typical field wiring diagrams for optional controls (ReliaTel™ only) WC-IOM-7 • Packaged Heat Pump...
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Page 30: Space Temperature Averaging
Installation Space Temperature Averaging Space temperature averaging is accomplished by wiring a number of remote sensors in a series/parallel circuit. Using the BAYSENS016* or BAYSENS017*, at least four sensors are required to accomplish space temperature averaging. Example #1 illustrates two series circuits with two sensors in each circiut wired in parallel. - Page 31 Installation Table 4. Temperature vs. Resistance Temperature Degrees F° Degrees C° Nominal Resistance -20° -28.9° 170.1 K - Ohms -15° -26.1° 143.5 K - Ohms -10° -23.3° 121.4 K - Ohms -5° -20.6° 103.0 K - Ohms 0° -17.8° 87.56 K - Ohms 5°...
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Page 32: Voltage Imbalance
Installation • Check the supply fan belts for proper tension and the fan bearings for sufficient lubrication. If the belts require adjustment, or if the bearings need lubricating, refer to the maintenance section of this manual for instructions. • Verify that a condensate trap is installed and the piping is properly sized and pitched. -
Page 33: Compressor Crankcase Heaters (Optional)
Installation Electrical Phasing (Three Phase Motors) The compressor motor(s) and the supply fan motor are internally connected for the proper rotation when the incoming power supply is phased as A, B, C. Proper electrical supply phasing can be quickly determined and corrected before starting the unit by using an instrument such as an Associated Research Model 45 Phase Sequence Indicator and following the steps below: •... -
Page 34: Reliatel Controls
Installation starts. Oil foaming occurs when refrigerant condenses in the compressor and mixes with the oil. In lower ambient conditions, refrigerant migration to the compressor could increase. When the compressor starts, the sudden reduction in crankcase pressure causes the liquid refrigerant to boil rapidly causing the oil to foam. This condition could damage compressor bearings due to reduced lubrication and could cause compressor mechanical failures. -
Page 35: Pre-Start
Pre-Start Test Modes There are three methods in which the “Test” mode can be cycled at LTB-Test 1 and LTB-Test 2. Step Test Mode - This method initiates the different components of the unit, one at a time, by temporarily shorting across the two test terminals for two to three seconds. -
Page 36: Verifying Proper Air Flow (Units With Belt Drive Indoor Fan)
Pre-Start Verifying Proper Air Flow (Units with Belt Drive Indoor Fan) Much of the systems performance and reliability is closely associated with, and dependent upon having the proper airflow supplied both to the space that is being conditioned and across the evaporator coil. The indoor fan speed is changed by opening or closing the adjustable motor sheave. - Page 37 Pre-Start Return Air Smoke Detector The return air smoke detector is designed to shut off the unit if smoke is sensed in the return air stream. Sampling the airflow entering the unit at the return air opening performs this function. In order for the smoke detector to properly sense smoke in the return air stream, the air velocity entering the unit must be between 500 and 4000 feet per minute.
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Page 38: Start Up
Start Up Economizer Start-Up ReliaTel Control Using the Service Test Guide in Table 5, p. 35, momentarily jump across the Test 1 & Test 2 terminals on LTB1 one time to start the Minimum Ventilation Test. Set the minimum position setpoint for the economizer to the required percentage of minimum ventilation using the setpoint potentiometer located on the Economizer Control (ECA). -
Page 39: Heating Start-Up
Check the compressor oil levels. The oil level in each compressor sight glass should be 1/2 to 3/4 full when they are “Off” . Note: The scroll compressor uses Trane OIL-42 without substitution. The appropriate oil charge for a 9 and 10 Ton scroll compressor is 8 pints. For a 14 and 15 Ton scroll compressor, use 14 pints. -
Page 40: Final System Setup
Start Up 2. ReliaTel Control Using the Service Test Guide in Table 5, p. 35, continue the SERVICE TEST start-up procedure for each compressor circuit. Momentarily jump across the Test 1 & Test 2 terminals on LTB one additional time if continuing from previous component start-up or until the desired start-up component Test is started. -
Page 41: Maintenance
Maintenance WARNING Rotating Components! During installation, testing, servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components. Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components, perform these tasks. Failure to follow all safety precautions when exposed to rotating components could result in death or serious injury. -
Page 42: Monthly Maintenance
Maintenance Note: Actual belt deflection “force” must not exceed the maximum “force” value shown in Table Table 6. Belt tension measurement and deflection ranges Deflection Force (Lbs.) Belts Small Super Gripbelts Gripnotch Steel Cable Cross Gripbelts Section Range Min. Max. Min. -
Page 43: Cooling Season
Maintenance Filters • Inspect the return air filters. Clean or replace them if necessary. Refer to the unit Service Facts for filter information. Return Air Smoke Detector Maintenance Airflow through the unit is affected by the amount of dirt and debris accumulated on the indoor coil and filters. -
Page 44: Heating Season
Maintenance • With the unit running, check and record the: ambient temperature; compressor suction and discharge pressures (each circuit); superheat (each circuit); Record this data on an “operator’s maintenance log” like the one shown in Table 7 on page 46. If the operating pressures indicate a refrigerant shortage, measure the system superheat. -
Page 45: Final Process
Maintenance WARNING Hazardous Pressures! Coils contain refrigerant under pressure. When cleaning coils, maintain coil cleaning solution temperature under 150°F to avoid excessive pressure in the coil. Failure to follow these safety precautions could result in coil bursting, which could result in death or serious injury. Do not heat the detergent-and-water solution above 150°... - Page 46 Maintenance _______________________________________________________________________ _______________________________________________________________________ — connection(s) _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ Table 7. Sample maintenance log Refrigerant Circuit #1 Refrigerant Circuit #2 Date Current Compr. Oil Suction Dischcharge Super heat Sub coolF/ Compr. Oil Suction Dischcharge Super heat Sub coolF/ Ambient Level Pressure Pressure Level...
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Page 47: Troubleshooting
Troubleshooting ReliaTel Control The RTRM has the ability to provide the service personnel with some unit diagnostics and system status information. WARNING Hazardous Service Procedures! The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. -
Page 48: System Status Checkout Procedure
Troubleshooting to check all of the RTRM outputs, and all of the external controls (relays, contactors, etc.) that the RTRM outputs energize, for each respective mode. Proceed to Step 6. 6. Step the system through all of the available modes, and verify operation of all outputs, controls, and modes. -
Page 49: System Failure
Troubleshooting LED 4 (Service) “On” indicates a clogged filter. “Off” during normal operation. “Flashing” indicates an evaporator fan failure Below is the complete listing of failure indication causes. System Failure Check the voltage between terminals 6 and 9 on J6, it should read approximately 32 VDC. -
Page 50: Resetting Cooling And Heating Lockouts
Troubleshooting Test Mode = voltage alternates between 32 VDC & 0.75 VDC Heat Failure Measure the voltage between terminals J6-7 & J6-6. Heat Operating = approximately 32 VDC Heat Off = less than 1 VDC, approximately 0.75 VDC Heating Failure = voltage alternates between 32 VDC & 0.75 VDC Cool Failure Measure the voltage between terminals J6-8 &... - Page 51 Troubleshooting Method 2 To reset the system at the unit, cycle the unit power by turning the disconnect switch “Off” and then “On” . Lockouts can be cleared through the building management system. Refer to the building management system instructions for more information. Zone Temperature Sensor (ZTS) Service Indicator The ZSM SERVICE LED is a generic indicator, that will signal the closing of a Normally Open switch at any time, providing the Indoor Motor (IDM) is...
- Page 52 Troubleshooting Zone Temperature Sensor (ZTS) Test Note: These procedures are not for programmable or digital models and are conducted with the Zone Sensor Module electrically removed from the system. Test 1 Zone Temperature Thermistor (ZTEMP) This component is tested by measuring the resistance between terminals 1 and 2 on the Zone Temperature Sensor.
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Page 53: Programmable & Digital Zone Sensor Test
Troubleshooting Test 3 System Mode and Fan Selection The combined resistance of the Mode selection switch and the Fan selection switch can be measured between terminals 2 and 4 on the Zone Sensor. The possible switch combinations are listed on the following page with their corresponding resistance values. -
Page 54: Reliatel Refrigeration Module (Rtrm) Default Chart
Troubleshooting 4. Verify all modes of operation, by running the unit through all of the steps in the “Test Modes” section discussed in “Unit Start-Up” . 5. After verifying proper unit operation, exit the test mode. Turn the fan on continuously at the ZSM, by pressing the button with the fan symbol. - Page 55 Troubleshooting Unit Economizer Control (ECA) Troubleshooting ReliaTel Control Table 10. Verify economizer status by economizer actuator (ECA) LED indicator: OFF: No Power or Failure Normal, OK to Economize Slow Flash: Normal, Not OK to Economize 1/2 Second On / 2 Seconds Off: Fast Flash - Error Code: Communications Failure...
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Page 56: Wiring Diagrams
Wiring Diagrams For easier access, after 2007, published unit wiring diagrams (individual, separate diagrams for unitary product lines) will become available via e-Library instead of through wiring manuals. Diagrams prior to 2008 will be located in wiring diagram books RT-SVE03A-EN and RT-SVE06A-EN. Drawing Number Description... -
Page 57: Warranty
WCZ, WCY, WCX, WCC, WCD, WCH, WCM, WCP and WSC (Parts Only) Models Less Than 20 Tons for Commercial Use* This warranty is extended by Trane, to the original purchaser and to any succeeding owner of the real property to which the Heat Pump is originally affixed, and applies to products purchased and retained for use within the U.S.A. -
Page 58: Heat Pump
In no event shall the Company be liable for any incidental or consequential damages. Trane 2701 Wilma Rudolph Blvd. Clarksville, TN 37040-1008 Attention: Manager,Product Service... - Page 60 Literature Order Number WC-IOM-7 Date 12/04 Supersedes WC-IOM-7 (04/03) The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.