TRANE FIAPWRX302 Precedent Packaged Rooftop Units Instruction Manual

TRANE FIAPWRX302 Precedent Packaged Rooftop Units

Product Information

Specifications

• Model Number: FIAPWRX302, FIAPWRX402, FIAPWRXW02, FIAPWRX303, FIAPWRX403, FIAPWRXW03
• Used With: T/YS072-1503, T/YH072-1503 T/YS072-1504, T/YH072-1504 T/YS072-150W, T/YH072-150W T/YS180-3003, T/YH180-3003, T/YZ150-3003, W/D/G150-3003 T/YS180-3004, T/YH180-3004, T/YZ150-300*4, W/D/G*150-3004 T/YS180-300W, T/YH180-300W, T/YZ150-300W, W/D/G150-300*W

Introduction
This manual provides important information for the proper operation and servicing of the PrecedentTM Packaged Rooftop Units. It is essential to read and understand this manual before using or servicing the unit.

Warnings, Cautions, and Notices
Throughout this manual, you will find safety advisories that must be strictly followed for your safety and the proper operation of the machine. These advisories are categorized as:

• WARNING: Indicates a potentially hazardous situation that could result in death or serious injury.
• CAUTION: Indicates a potentially hazardous situation that could result in minor or moderate injury, or alert against unsafe practices.
• NOTICE: Indicates a situation that could result in equipment or property damage only accidents.

Important Environmental Concerns
The PrecedentTM Packaged Rooftop Units adhere to important responsible refrigerant practices to minimize environmental impact. It is crucial to follow the guidelines and regulations regarding refrigerant usage and disposal.

Installation Instructions

• SAFETY WARNING: Only qualified personnel should install and service the equipment. Improper installation, adjustment, or alteration of the equipment by an unqualified person can lead to death or serious injury. Always observe all precautions mentioned in the literature, tags, stickers, and labels attached to the equipment.
• Proper Field Wiring and Grounding Required: All field wiring must be performed by qualified personnel to avoid fire and electrocution hazards. Follow the requirements for field wiring installation and grounding as described in the National Electrical Code (NEC) and your local/state/national electrical codes.
• Personal Protective Equipment (PPE) Required: Technicians must wear proper PPE to protect themselves from potential electrical, mechanical, and chemical hazards. Follow the precautions mentioned in this manual, as well as the instructions on the tags, stickers, and labels.
• Follow EHS Policies: It is essential to follow Environmental, Health, and Safety (EHS) policies to ensure personal safety and prevent accidents.

Copyright
This document and its contents are the property of Trane. It is prohibited to use or reproduce this document, in whole or in part, without written permission from Trane. Trane reserves the right to revise the publication and make changes to its content without prior notification.

Trademarks
All trademarks referenced in this document are the property of their respective owners.

Product Usage Instructions

Installation
Before installing the PrecedentTM Packaged Rooftop Unit, ensure that you have read and understood the installation instructions provided in this manual. Only qualified personnel should perform the installation.

Follow the steps below for installation:

1. Prepare the installation site and ensure it meets the requirements specified in the manual.
2. Position the unit on the rooftop or designated area according to the recommended guidelines.
3. Connect the necessary electrical wiring following the field wiring installation requirements and electrical codes.
4. Ensure proper grounding of the unit to avoid electrical hazards.
5. Complete all necessary connections for ventilation, heating, and air-conditioning systems.
6. Double-check all connections and secure them properly.
7. Verify that all safety precautions have been taken and ensure the unit is ready for operation.

Servicing
Servicing of the PrecedentTM Packaged Rooftop Unit should only be done by qualified personnel who have received proper training. Follow these instructions for servicing:

1. Before servicing, ensure that all power sources to the unit are turned off and locked out to prevent accidents.
2. Refer to the maintenance schedule provided in this manual for regular maintenance tasks.
3. Inspect and clean the unit’s filters, coils, and other components as recommended.
4. Check for any signs of wear, damage, or malfunctioning parts.
5. Replace any faulty or worn-out components with genuine parts from the manufacturer.
6. Perform any necessary adjustments or calibrations according to the instructions provided.
7. After servicing, ensure that all connections are secure, and the unit is in proper working condition.

Troubleshooting
If you encounter any issues with the PrecedentTM Packaged Rooftop Unit, refer to the troubleshooting section in this manual. Follow the troubleshooting steps provided to identify and resolve common problems. If the issue persists, contact qualified service personnel for further assistance.

FAQ

• Q: Who should install and service the equipment?
  A: Only qualified personnel should install and service the equipment. Installation, starting up, and servicing require specific knowledge and training.

• Q: What are the three types of advisories mentioned in the manual?
  A: The three types of advisories are: WARNING (potentially hazardous situation resulting in death or serious injury), CAUTION (potentially hazardous situation resulting in minor or moderate injury or alert against unsafe practices), and NOTICE (situation resulting in equipment or property-damage only accidents).

• Q: What precautions should technicians follow for personal protection?
  A: Technicians must wear proper Personal Protective Equipment (PPE) for the job being undertaken. This includes following precautions mentioned in the manual, as well as instructions on the tags, stickers, and labels attached to the equipment.

• Q: Can I reproduce or use this document without written permission?
  A: No, this document and its contents are the property of Trane and may not be used or reproduced in whole or in part without written permission.

Models

Model Number:/Used With:

• FIAPWRX302 T/YS072-1503, T/YH072-150*3
• FIAPWRX402 T/YS072-1504, T/YH072-150*4
• FIAPWRXW02 T/YS072-150W, T/YH072-150*W
• FIAPWRX303 T/YS180-3003, T/YH180-3003, T/YZ150-300*3, W/D/G*150-3003
• FIAPWRX403 T/YS180-3004, T/YH180-3004, T/YZ150-300*4, W/D/G*150-3004
• FIAPWRXW03 T/YS180-300W, T/YH180-300W, T/YZ150-300*W, W/D/G*150-300W

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 require 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.

Introduction

Read this manual thoroughly before operating or servicing this unit.

Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as required. Your safety and the proper operation of this machine depend upon the strict observance of these precautions.

The three types of advisories are defined as follows:

• WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
• CAUTION Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.
• NOTICE Indicates a situation that could result in equipment or property damage only accidents.

Important Environmental Concerns
Scientific research has shown that certain man-made chemicals can affect the earth’s naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants.

Important Responsible Refrigerant Practices
Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified according to local rules. For the USA, the Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

WARNING

Proper Field Wiring and Grounding Required!
Failure to follow code could result in death or serious injury. All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state/national electrical codes.

WARNING

Personal Protective Equipment (PPE) Required!
Failure to wear proper PPE for the job being undertaken could result in death or serious injury. Technicians, to protect themselves from potential electrical, mechanical, and chemical hazards, MUST follow precautions in this manual and on the tags, stickers, and labels, as well as the instructions below:

• Before installing/servicing this unit, technicians MUST put on all PPE required for the work being undertaken (Examples; cut-resistant gloves/sleeves, butyl gloves, safety glasses, hard hat/bump cap, fall protection, electrical PPE and arc flash clothing). ALWAYS refer to appropriate Safety Data Sheets
  (SDS) and OSHA guidelines for proper PPE.

• When working with or around hazardous chemicals, ALWAYS refer to the appropriate SDS and OSHA/GHS (Global Harmonized System of Classification and Labeling of Chemicals) guidelines for information on allowable personal exposure levels, proper respiratory protection, and handling instructions.

• If there is a risk of energized electrical contact, arc, or flash, technicians MUST put on all PPE by OSHA, NFPA 70E, or other country-specific requirements for arc flash protection, before servicing the unit. NEVER PERFORM ANY SWITCHING, DISCONNECTING, OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND ARC FLASH CLOTHING. ENSURE ELECTRICAL METERS AND EQUIPMENT ARE PROPERLY RATED FOR THE INTENDED VOLTAGE.

WARNING

Follow EHS Policies!
Failure to follow the instructions below could result in death or serious injury.

• All Trane personnel must follow the company’s Environmental, Health, and Safety (EHS) policies when performing work such as hot work, electrical, fall protection, lockout/tagout, refrigerant handling, etc. Where local regulations are more stringent than these policies, those regulations supersede these policies.
• Non-race personnel should always follow local regulations.

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.

Trademarks
All trademarks referenced in this document are the trademarks of their respective owners.

Revision History
Removed block-off from Figure 16, figure 17, and Figure 20 in Installation – FIAPWRX03 chapter.

General Information  FIAPWRX02

Power exhaust is designed for downflow applications1. If the installation is for horizontal duct connections, the power exhaust may be mounted on the horizontal return duct. The installer is responsible for the installation. An economizer or motorized damper must be installed and functional before attempting to install the power exhaust. The power exhaust can be turned ON at infinite fresh air damper settings depending on how the unit is configured.

Inspection

1. Unpack all components of the power exhaust kit.
2. Remove the hardware package from the power exhaust assembly.
3. Check carefully for shipping damage. If any damage is found, report it immediately, and file a claim against the transportation company.

WARNING

Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy- storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for the discharge of capacitors. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged.

Parts List

Replacement angle bracket for damper motor (used on electromechanical units only)| 1
---|---
Econ logic mounting screw, # 6-19 x 0.625| 1

1. Downflow application only is possible for units with low leak economizers.

Installation

Pre-Installation

1. Open and lock the unit disconnect before attempting to install this accessory.
2. Remove the filter access panel from the front side of the unit.
3. Remove the compressor access panel from the front side of the unit.
4. Remove the return air panel from the back side of the unit.

Standard Economizer
Use the template for the return air panel provided in the hardware kit to locate positions to drill holes and cut the required new opening.

Note:
Use a template that corresponds to the unit/return panel size. Do not cut a hole for units that have a low leak economizer installed.

Recommended Procedure
Place the template into position for drilling and cutting, and secure it with pieces of duct tape (field supplied).

Important:
Alignment of the template is critical. Instructions for alignment and cutting are printed on the template.

1. Drill three 1/8-inch holes in the template and panel for engagement holes. Refer to the template.

2. Drill four holes through the template and panel for saw-cutting starter holes. Cut through the template and panel at the same time to create the new opening; discard the scrap metal.

3. Install edge protector (supplied) along the down-facing top edge of the new cutout. See Figure 1.

4. Assemble the required powered exhaust hood with the screws provided as shown in Figure 1.

5. Mount hood to duct cover with four screws. See Figure 1.

6. Insert a 1-inch bushing into the hood. See Figure 1.

7. Partially insert screws into the three engagement holes drilled in the duct cover. Leave approximately 1/8-inch gap between the screw head and duct cover. These will act as alignment hangers. See Figure 1.
   Important: Remove the return duct block off. Refer to Figure 2.

8. Install duct cover back on the unit.

9. Apply the gasket to the face of the power exhaust assembly. See Figure 3.

10. Pull the wiring harness out from the power exhaust assembly and insert it through the bushing in the hood.

11. Lift the power exhaust assembly up and align slots in the top flange with screws in the duct cover.

12. Secure the three screws.

13. Use the seven clearance holes on the perimeter flange and secure to the duct panel with seven self-drilling screws.

14. Route the wire harness along the top edge of the economizer and secure it with pop-in wire ties. See Figure 4.

15. For all units, route the wires for the powered exhaust into the return control box located in the return section of the unit. Refer to Figure 5.

WARNING

Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy- storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for the discharge of capacitors. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged.

Low Leak Economizer

1. Remove the barometric relief hood (if installed).
2. Remove the aluminum barometric relief damper and discard.
3. Route wire through a 1-inch hole to the control module.
4. Locate dimples, then hang the powered exhaust on three top holes using self-drilling screws. The upper hood may need to be removed to access dimples.
5. Using self-drilling screws, attach the powered exhaust perimeter to the facing.
6. Take up slack in wire and route clear of gears.

Wiring Installation  FIAPWRX02

WARNING

Proper Field Wiring and Grounding Required!
Failure to follow the code could result in death or serious injury. All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state/national electrical codes.

NOTICE

Wire Damage!

• Failure to follow the instructions below could result in damaged wires.
• Use provided wire ties to make sure wires are secured and protected from sharp edges and hot surfaces.

NOTES:

1. MATING CONNECTOR PPM89 IS LOCATED IN THE RETURN ENCLOSURE PANEL
2. 460V/575V

Symbio Controls Wiring

WARNING

Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy- storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for the discharge of capacitors. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged.

Refer to the controls wiring diagram (Figure 8) for connections.

1. Route controls wiring (black and red) and connector J6 along the top of the return control box and down the right side and enter the enclosure through the top hole.
2. Connect wire connector J6 to P6 on the fresh air options module in the return control box (brown connector). Secure wiring with pop-in wire ties.
3. After installation is complete, the Symbio™ 700 UC configuration will need to be updated to enable this installed feature.

Power Wiring

WARNING

Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy- storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for the discharge of capacitors. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged.

Refer to the power diagrams for connections (Figure 8).

Important:
Use provided wire ties to secure and protect wires from sharp edges, rotating parts, and hot surfaces.

1. Route the high voltage wiring (brown and orange) and connector PPF89 along the top of the return control box and down the right side and enter the enclosure through the bottom wire hole.
2. Connect PPF89 to PPM89 (purple connector) on the fresh air options module and secure wires with pop-in wire ties.

Close Out

WARNING

Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy- storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for the discharge of capacitors. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged.

1. Open and lock the unit disconnect.
2. Replace the filter access panel.
3. Place the 1-inch x 3-inch label (power exhaust installed) next to the main unit wiring diagram inside the compressor access panel.
4. Check all seams on the power exhaust and confirm they are all sealed water-tight with the provided silicone rubber sealant.
5. Close the unit disconnect switch.

General Information – FIAPWRX03

Power exhaust is designed for downflow applications. For horizontal applications, the power exhaust may be mounted on the horizontal return duct. It is the responsibility of the installer’s to determine how to complete such installation. An economizer must be installed and functional before attempting to install the power exhaust.

Inspection

1. Unpack all components of the kit.
2. Check carefully for shipping damage. If any damage is found, report it immediately, and file a claim against the transportation company.
3. Visually inspect the components for shipping damage as soon as possible after delivery, before it is stored. Concealed damage must be reported within 15 days.
4. If concealed damage is discovered, stop unpacking the shipment.
5. Do not remove damaged material from the receiving location. Take photos of the damage, if possible. The owner must provide reasonable evidence that the damage did not occur after delivery.
6. Notify the carrier’s terminal of damage immediately by phone and by mail. Request an immediate joint inspection of the damage by the carrier and the consignee.

Note:
Do not attempt to repair any damaged parts until the parts are inspected by the carrier’s representative.

Parts List

Components not shown

Installation

FIAPWRX03

WARNING

Hazardous Service Procedures!
Failure to follow instructions could result in death or serious injury. The procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. When possible, disconnect all electrical power including remote disconnect and discharge all energy storing devices such as capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. When necessary to work with live electrical components, have a qualified licensed electrician or other individual who has been trained in handling live electrical components perform these tasks.

1. Open and lock the unit disconnect before attempting to install this accessory.
2. Remove the filter access panel from the front side of the unit.
3. Remove the horizontal duct cover.
4. Remove the economizer duct block off.

Internal Blockoff Gasket Seals
The following are two types of economizers:

1. Standard economizer: Attach one gasket (9) to the base, aligned with the economizer return air damper (RAD) bracket. See Figure 10.
2. Low leak economizer: Align the gasket with the return air damper flange. See Figure 11.
3. Cut one piece of gasket (9) to a length of 4.3-inch and attach to (4) leaving a gap of 0.5-inch from face A. See Figure 10.

Comparative Enthalpy Install

1. Install humidity and temperature sensors as required. See Figure 12.
2. Install bushing in the internal block off panel. See Figure 12.
3. Connect wires to humidity sensor and route wires through bushing. Wire tie leads to block off to provide strain relief. (Wires to be routed with power exhaust leads back to the fresh air options module as described in later steps).

Blockoff Assembly

1. Install the internal base duct block off using two screws. Figure 13. Install base duct block off panel
2. Attach internal block off (4, 5, and 7) using six screws.
3. Install internal block off assembly using four screws to secure to side flanges of return opening.

Power Exhaust Assembly

1. Remove the center screw at the bottom of the rear panel duct opening.

2. Attach gasket (11) to the unit back panel. Start the gasket below the return horizontal duct opening, centered on the opening and aligned with the flange at the base rail. Route gasket to cover holes and dimples along the sides and top of the duct opening. The gasket should be one continuous piece overlapping 1 inch at the bottom center.

3. Install support and alignment bracket to a base rail below return duct opening with three screws (1/4 x 5/8).

4. Set power exhaust housing adjacent to return duct opening.

5. Uncoil wires and route them through the grommet in an internal block-off. (Feed terminals through bushing one at a time). The following are two types of economizers:

6. Standard economizer: Insert wire tie into the closest hole in the economizer support channel and secure the power and control wires. See Figure 18.

7. Low leak economizer: Route wiring along the bottom of the return air damper and secure the power and control wire. See Figure 19.

8. Attach the power exhaust to the side of the unit using 10 screws.

9. Using 10 screws, attach a horizontal return block off to the unit’s rear panel.
   The following are two types of economizers:

10. Standard economizer: Continue to route two power and two control wires (with comparative enthalpy sensor wiring if present) along the economizer support channel and secure with four pop-in wire ties. See Figure 22.

11. Low leak economizer: Route two power and two control wires down the top center blockoff panel and secure wires with the four pop-in wire ties that will already be installed across the bottom of the return air damper. See Figure 23.

Wiring Installation–FIAPWRX03

WARNING

Hazardous Voltage with Capacitors!
Failure to follow the instructions below could result in death or serious injury. Disconnect all electric power, including remote disconnects, and wait for DC capacitors to discharge before servicing. Refer to the manufacturer’s recommendations for proper discharge time as DC bus capacitors retain hazardous voltages after input power has been disconnected. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged before touching any internal components.

Important:
Use provided wire ties to secure and protect wires from sharp edges, rotating parts, and hot surfaces.

Power Wiring

1. Using the wire routing guide shown in Figure 24, route the high voltage wiring (brown and orange wires) and connector PPF89 along the top of the return control box and down the right side and enter enclosure through bottom wire hole. Connect PPF89 to PPM89 (purple connector) on the fresh air options module and secure wires with pop-in wire ties.
2. Ensure that all wires are protected from damage by moving parts. Secure the wires with wire ties (provided).
3. After installation is complete, the Symbio™ 700 UC configuration will need to be updated to enable this installed feature.

Control Wiring

Units with Standard and Low Leak Economizer

Note: Refer to Figure 25 for connections.
Connect power exhaust wire connector J6 to P6 on the fresh air options module in the return control box (brown connector).

1. Route controls wiring (black and red wires) and connector J6 along the top of the return control box and down the right side and enter the enclosure through the top hole.
2. Connect wire connector J6 to P6 on the fresh air options module in the return control box (brown connector). Secure wiring with pop-in wire ties.
3. After installation is complete, the Symbio™ 700 UC configuration will need to be updated to enable this installed feature.

Power Exhaust Settings with Single Zone VAV and Multi-Speed Units
Set the power exhaust setpoint with the fan at maximum speed. Maximum speed can be obtained in full cooling or any heating mode.

Weights and Dimensions

Table 1. Weights and dimensions

Model number| ****

L (inch)

| ****

W (inch)

| ****

H (inch)

| ****

Weight (lbs)

---|---|---|---|---
FIAPWRX02| 20.25| 18.25| 24.50| 80
FIAPWRX03| 21.50| 23.25| 34.25| 110

Trane and American Standard create comfortable, energy-efficient indoor environments for commercial and residential applications. 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.

References

• American Standard® | Air Conditioning and Heating | HVAC Systems
• Trane Heating & Air Conditioning

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