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Installation Instructions
Power Exhaust Kit
Foundation™ Packaged Rooftop Units
15 to 25 Tons
Model Numbers:
BAYPWRX303*
BAYPWRX304*
BAYPWRX305*
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 2024
Used With:
G/EDK180-300A3
G/EDK180-300A4
G/EDK180-300AW
ACC-SVN305A-EN
SAFETY WARNING
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Summary of Contents for Trane Foundation BAYPWRX303 Series
- Page 1 Installation Instructions Power Exhaust Kit Foundation™ Packaged Rooftop Units 15 to 25 Tons Model Numbers: Used With: BAYPWRX303* G/EDK180-300A3 BAYPWRX304* G/EDK180-300A4 BAYPWRX305* G/EDK180-300AW 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: Warnings, Cautions, And Notices
When working with or around hazardous chemicals, these compounds have the same potential impact to the ALWAYS refer to the appropriate SDS and OSHA/GHS environment. Trane advocates the responsible handling of all (Global Harmonized System of Classification and refrigerants. Labeling of Chemicals) guidelines for information on... - Page 3 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.
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Page 4: Table Of Contents
Table of Contents General Information ..... . . 5 Inspection ......5 Parts List . -
Page 5: General Information
Power Exhaust Assembly Internal Blockoff, Left Alternate Duct Internal Blockoff, Right Internal Blockoff, Center Internal Blockoff, Center Alternate Duct Internal Blockoff, Left Trane Duct Horizontal Return Blockoff 1-in. x 1-in. x 6-in.Gasket 0.25-in. x 1-in. x 13-ft. Gasket Internal Base Duct Blockoff... - Page 6 General Information Table 1. Major power exhaust components (continued) Item Description Power Exhaust Alignment Bracket Note: The power exhaust assembly is designed to work with either the return duct opening farthest from the evaporator coil or the alternate return duct opening (closest to the evaporator coil).
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Page 7: Installation
Installation Internal Block-Off Gasket Seals WARNING Standard Economizer: Attach one gasket (9) to the base, Hazardous Service Procedures! aligned with the economizer Return Air Damper (RAD) bracket. See Figure Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or Figure 3. -
Page 8: Comparative Enthalpy
Installation Comparative Enthalpy Block-Off Assembly Units with Standard and Low Leak Note: When using the return duct opening farthest from the evaporator coil. Economizer Control Option 1. Install internal base duct block-off using two screws. 1. Install humidity and temperature sensors as required. See Figure Figure 7. -
Page 9: Block-Off Assembly
Installation 3. Install internal block-off assembly using four screws to Figure 11. Insert left internal block-off secure to side flanges of return opening. Figure 9. Secure internal block-off assembly Screws Block-Off Assembly 3. Secure left block-off assembly to RAD bracket for standard Note: When using the return duct opening closest to the economizer or to the return damper flange for low leak evaporator coil. -
Page 10: Power Exhaust Assembly
Installation Power Exhaust Assembly 5. Uncoil wires and route through grommet in internal blockoff. Note: Same for both return duct openings. Feed terminals through bushing one at a time. 1. Remove center screw at bottom of rear panel duct Standard economizer: Insert wire tie into closest hole in the opening. - Page 11 Installation Figure 17. Low leak economizer wire routing Figure 19. Attach horizontal return block-off Pop-in Wire tie (Power Exhaust Power and Fresh Air Damper Control Wire Routing) Enclosure Power Exhaust Wire Harness Routing Return Air Temperature/ Humidity Sensor Pop-in Wire Tie (Return Air Temperature/Humidity Sensor Harness Routing) 6.
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Page 12: Wiring Installation
Installation Figure 21. Route wires along economizer support Figure 22. Power connection to VFTB1 for units with bracket Power Exhaust Pop-in Wire Tie Wire Harness Return Air Sensor Pop-in Wire Tie Wire Harness Wiring Installation WARNING Hazardous Voltage w/Capacitors! Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. - Page 13 Installation Figure 23. Control wiring diagram REF DES DESCRIPTION VFTB1 TERMINAL BLOCK XFM CAPACITOR POWER WIRING EXHAUST FAN MOTOR EXHAUST FAN RELAY FAOM FRESH AIR MODULE WIRE COLOR ABBREVIATION CODES CODE COLOR CODE COLOR XFM(O) BLACK PINK VFTB1 XFM(R) BLUE BROWN TURQUOISE XFM(BR)
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Page 14: Unit Power Exhaust Operation And Settings
Installation Unit Power Exhaust Operation and Settings Standard Economizer The power exhaust setpoint (point at which the power exhaust is turned on) is adjustable from 0% to 100% economizer damper outside air setting, corresponding to the setting of the exhaust setpoint potentiometer on the RTEM-EM. The power exhaust is turned on when the indoor blower is running and the damper position is greater than the power exhaust setpoint. - Page 15 Notes ACC-SVN305A-EN...
- Page 16 For more information, please visit trane.com or americanstandardair.com. Trane and American Standard have a policy of continuous product and product data improvement and reserve the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.
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