. Installation, Operation, and Maintenance Midrange Self-Contained Units Models SCWH/SCRH 3, 5, 7.5, 10, 12, & 15-tons “AO” and later design sequence October 2008 PKG-SVX14A-EN. About This Manual Literature Change History Use this manual for commercial self- contained models SCWH and SCRH. This is the original issue of this manual. It provides specific installation, owner maintenance, and diagnostic troubleshooting instructions for “AO” and later design sequences. PKG-SVX14A-EN Cross reference to related publications/information: Midrange Self-Contained catalog, PKG-PRC012-EN Installation2 general information 2 pre-installation considerations 6 dimensions & weights 11 mechanical requirements 17 electrical requirements 19 installation procedure 21 pre-startup requirements 22 startup 23 Operation24 sequence of operation 24 Maintenance 25 general information 25. CCW rear general information Digit 14 - unit finish 1 = painted 2 = corrosion resistant coating Digit 15 - coil finish/Cu-Ni Condenser 0 = none E = evaporator coated (SCRH) J = Cupronickel condenser & Evaporator coated (SCWH) PKG-SVX14A-EN.

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Installation Refrigerant Handling Procedures Environmental Accountability Policy Trane urges that all HVAC servicers to make every effort to eliminate, if possible, or vigorously reduce the emission of CFC, HCFC, and HFC refrigerants to the atmosphere. Always act in a responsible. Receiving and Handling Shipping Package Midrange units ship assembled on skids. Units ship assembled, piped, and charged with either R410a (model SCWH) or a dry nitrogen charge (model SCRH). Installation Receiving Checklist Complete the following checklist immediately after receiving unit shipment to detect possible shipping damage.

Trane Commercial Self. HVAC design and. To assist the engineering community with building and HVAC system,Trane has pioneered the development of a. Trane Commercial Self-Contained R'newal Program. These Trane application manuals are comprehensive reference guides to increase. (HVAC) system design.

Service Access 3 through 7.5-ton SCRH/SCWH 10 through 15-ton SCWH/SRCH with top-mounted fan configuration 24' AIR FILTER ACCESS (BOTH SIDES) DRAIN CONNECTION (BOTH SIDES) 26' SERVICE CLEARANCE LEFT SIDE SIGHT GLASS/FILTER DRIER ACCESS (RIGHT SIDE) PKG-SVX14A-EN Installation LATCH THIS PANEL GOES TO TOP ON. Service Access 10 through 15-ton SCRH/SCWH 10, 12, & 15-ton SCWH/SRCH with side-mounted fan configura- tion, field converted Installation pre-installation considerations PKG-SVX14A-EN. Isolator Placement Note: Isolators are field-provided. 3, 5, & 7.5-ton units bottom view of unit ” dia. Hole under all 4 corners Figure I-PC-1. Isolator mounting hole locations on 3, 5, & 7.5-ton units PKG-SVX14A-EN Installation Table I-PC-1. Isolator load points, units with a vertical discharge configuration, lbs.

Model SCRB/SIRB 3-ton. WARNING Improper Unit Lift! Test lift unit approximately 24 inches high to verify the proper center-of- gravity lift point.

To avoid dropping the unit, reposition the lifting point if the unit is not level. Failure to properly lift the unit could result in death, serious injury, or possible equipment/ property-only damage. 3 & 5-tons SCWH/SCRH SCWH /SCRH dimensions & weight, in-lbs. Unit size 31.89 64.17 22.24 5.65 11.93 14.31 36.41 75.98 24.01 7.73 13.03 15.65 PKG-SVX14A-EN Installation vertical discharge SCWH 10.63 18.00 7.80 7.80 15.60 15.63 20.20 11.61 20.31 12.32 8.66 20.98. 7.5-tons SCWH/SCRH SCWH /SCRH weight, lbs. Unit shipping operating size weight weight Installation vertical discharge SCWH dimensions & weights horizontal discharge (field converted) SCRH PKG-SVX14A-EN.

10, 12, & 15-tons with top-mounted fan configuration SCWH/SCRH SCWH /SCRH dimensions & weight, in-lbs. Unit tons 66.75 88.78 7.04 18.07 57.28 19.01 65.75 92.71 7.04 18.07 61.22 22.95 80.31 92.71 19.83 19.83 61.22 22.95 PKG-SVX14A-EN Installation vertical discharge SCWH. 10, 12, & 15-tons with side-mounted fan configuration, field converted SCWH/SCRH Installation SCWH/ SCRH Dimensions, in.

Unit tons 65.75 7.04 18.07 57.28 66.93 25.79 65.75 7.04 18.07 61.22 66.93 29.73 80.31 19.83 19.83 61.22 81.49 29.73 dimensions & weights Notes: 1. Plenum Hot water coil 3 & 5-ton units 5.91 0.28 0.39 1.0 NPT PKG-SVX14A-EN Installation 0.75 SCWH/SCRH Hot water coil dimensions & weights, 3 & 5-ton units, in-lbs. Size 3-ton 26.46 18.98 25.67 5-ton 30.98 23.50 30.20 dimensions & weights Plenum dimensions &. Hot water coil 10 thru 15-ton units 0.39 0.28 0.43 1.00 NPT 0.75 5.90 Installation 35.51 5.91 28.03 34.72 0.75 SCWH/SCRH Hot water coil dimensions & weights, in-lbs. Size 7.5-ton 10-ton 58.72 50.98 12-ton 58.72 50.98 15-ton 73.29 63.98 dimensions & weights 1.57.

Make duct connections to the unit with a flexible material such as heavy canvas. If a fire hazard exists, Trane recommends using Flexweave 1000, type FW30 or equivalent canvas. Use three inches for the return duct and three inches for the discharge duct. Refrigerant Piping (Air-Cooled Units Only) Reference industry recommendations for air-cooled unit refrigerant piping.

If suspending piping from the building, use isolation hangers to prevent vibration transmission. Air-cooled units ship with a holding charge of nitrogen. Before installing unit piping, momentarily depress either the suction or discharge line access valve to verify that the holding charge has not been lost. Supply Power Wiring It is the installer’s responsibility to provide power supply wiring to the unit terminal block or the non-fused disconnect switch option. Wiring should conform to NEC and all applicable code requirements. Verify the power supply available is compatible with the unit nameplate ratings.

Table I-ER-1. Model SCWH /SCRH electrical data model tons voltage SC.H0303. 208-230V/60Hz/3Ph SC.H0304. 460V/60Hz/3Ph SC.H0305. 575V/60Hz/3Ph SC.H0503.

208-230V/60Hz/3Ph SC.H0504. 460V/60Hz/3Ph SC.H0505. 575V/60Hz/3Ph SC.H0753. 208-230V/60Hz/3Ph SC.H0754. 460V/60Hz/3Ph SC.H0755.

575V/60Hz/3Ph SC.H1003. 208-230V/60Hz/3Ph SC.H1004. 460V/60Hz/3Ph SC.H1005. 575V/60Hz/3Ph SC.H1203. 208-230V/60Hz/3Ph SC.H1204. 460V/60Hz/3Ph SC.H1205.

575V/60Hz/3Ph SC.H1503. Installation Checklist Reference the checklist below to verify all steps required to successfully install a deluxe self-contained unit are complete. This checklist is intended to acquaint the installing personnel with what is required in the installation process. It does not replace the detailed instructions detailed in the applicable sections of this manual. Installation Pre-Startup Checklist Complete this checklist after installing the unit to verify all recommended installation procedures are complete before unit startup.

This does not replace the detailed instructions in the appropriate sections of this manual. Always read the entire section carefully to become familiar with the procedures. Be sure all unit accessories are properly set and installed. Model SCWH: Verify condenser water piping is properly connected, supply, and return. Model SCRH: Verify refrigerant piping is properly connected, hot gas, and liquid.

Inspect all ductwork and duct connections. Operation Sequence of Operation The thermostat controls the unit operation. It has both manual and automatic switches so the thermostat maintains desired comfort levels. The fan switch allows manual selection of the fan speed using the On or Auto setting. With the switch set in the On position, the evaporator fan runs continously, independent from the thermostat temperature setting.

Table M-GI-1. Midrange maintenance general data dimensions, in-lbs. Height length depth weight (shipping / net) cooling performance net cooling capacity, btu/h nominal air flow, cfm system power, kW Copeland scroll compressor quantity model indoor coil, 3/8' tube size face area, sq. Rows / fpf water condenser, tube &. Maintenance Procedures This section describes specific maintenance procedures that must be preformed as a part of the normal maintenance program. Always disconnect electrical power to the unit before performing these procedures and heed all warnings and cautions.

WARNING Live Electrical Components! During installation, testing, servicing, and troubleshooting this equipment, it may be necessary to work with live. Refrigerant System Special Note on Refrigerant Emissions Follow the Trane recommended procedures on operation, maintenance, and service to ensure refrigerant conservation and emission reduction. Also, pay specific attention to the following:.

Whenever removing refrigerant from equipment, recover for reuse, recycle, reprocess (reclaim), or properly destroy. Table M-MP-1. Normal operation condition high pressure low pressure superheat subcooling Table M-MP-2. Controls adjustment control high pressure control (air-cooled & 12-ton water cooled) high pressure control (water-cooled except 12-ton) low pressure contol motor windings thermostat, standard motor only Maintenance CAUTION Motor Winding Damage! Do not use a megohm meter or apply.

Periodic Checklists Monthly Checklist The following checklist provides the recommended maintenance schedule to keep the unit running efficiently. WARNING Hazardous V oltage! Disconnect all electrical power including remote disconnects before servicing unit.

Follow proper lockout/tagout procedures to ensure power cannot be inadvertently energized. 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.

Troubleshooting Use the following steps and procedures to help correct these common problems. Problem The entire unit does not operate. Problem Insufficient cooling Possible cause 1. Insufficient air flow due to: a) dirty evaporator; b) ice on evaporator coils (indicates airflow restriction through evaporator); c) dirty filter; d) obstructed discharge air intake; e) fan motor not running; f) evaporator fan or fan wheel slipping on motor shaft 2. typical wiring Maintenance diagram PKG-SVX14A-EN. typical wiring Maintenance diagram PKG-SVX01A-EN. typical wiring Maintenance diagram PKG-SVX14A-EN.

typical wiring Maintenance diagram PKG-SVX01A-EN. For more information, contact your local Trane office or e-mail us at comfort@trane.com Literature Order Number Date Supersedes Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. PKG-SVX14A-EN October 2008 PKG-SVX14A-EN September 2007.

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