TRANE BAYDSCF300 Foundation Packaged Rooftop Units Instruction Manual

Installation Instructions
Through the Base Electrical Utility/ Unit Mounted Disconnect
Foundation™ Packaged Rooftop Units 15 to 25 Tons
Model Number: See Table 1

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. 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.
December 2022 ACC-SVN151D-EN ©2022

Warnings, Cautions, and Notices

Read this manual thoroughly before operating or servicing this unit. Safety advisories appear throughout this manual as required. Your personal 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 refrigerantsincluding industry replacements for CFCs such as HCFCs and HFCs.
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, in order 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 in accordance with OSHA, NFPA 70E, or other countryspecific requirements for arc flash protection, PRIOR to 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 INTENDED VOLTAGE.

WARNING
Follow EHS Policies!
Failure to follow 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-Trane 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
  Model number updates in Table 1.

Introduction

This manual describes the procedures required to properly install the unit mounted disconnect switch/Through the Base Electrical Utility.
Table 1. Model numbers

Unit Mounted Disconnect
BAYDSCF300| E/GCC180-300, 4/W, No Heat/Gas Heat
BAYDSCF301| E/GCC180-300, 3, No Heat/Gas Heat
BAYDSCF302| E/GCC180, 3/4/W, 18kW Electric Heat
E/GCC180-300, 4/W, 36kW/54kW Electric Heat E/GCC210-300, W, 72kW Electric Heat
BAYDSCF303| E/GCC180-300, 3, 36kW Electric Heat
E/GCC210-300, 4, 72kW Electric Heat
BAYDSCF304| E/GCC180-300, 3, 54kW Electric Heat
E/GCC210-300, 3, 72kW Electric Heat
Through the Base Utility
BAYTBUE300| E/GCC180-300*, 4/W, 18kW/36kW/54kW/72kW Electric Heat

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.

Parts List

Table 2. Parts list

nonelectric heat kits)
1| Conduit Mounting Plates (Number of plates varies with size of the disconnect)

*Only included with BAYDSCF kits
Installation

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. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged.

Access Location

1. Remove the compressor access panel.
2. Remove the through the base electrical (TBUE) access plate and ¼” screw located on the compressor rail in the front corner of the unit and discard. See Figure 1.
3. Cut out the foam insert and pull the power and thermostat wires up through the TBUE access hole.
   Figure 1. Remove the TBUE access plate

Install the Enclosure

1. Using 3 screws (10-16) install the supplied bracket on the corner post. See Figure 2.
2. Install the two gaskets on the compressor rail where the enclosure will sit. See Figure 3.
3. Remove TBUE access panel and set it aside.
4. Install the enclosure ensuring that it makes good contact with the gasket.
5. Reinstall the 1/4-inch screw in the same location from where it was removed.
6. Using 3 screws (10-16) attach the enclosure to the previously installed bracket. See Figure 4.
7. Remove label (kit installed) from kit bag and place label next to unit nameplate.

Figure 2. Install bracket on corner post

Figure 3. Install gaskets on the compressor rail

Figure 4. Attach enclose to bracket

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. Verify with a CAT III or IV voltmeter rated per NFPA 70E that all capacitors have discharged.

1. Determine if the hole size provided in mounting plate for the power wire conduit is the correct size per conduit connector. If hole is too big, install one of the mounting plates provided, per power conduit connection size, using 4 screws (10-16).
2. Route the power and thermostat conduits to the mounting plate located inside the TBUE enclosure and secure.
3. Insert the power wires into the line side of the disconnect and ground lug, paying attention to proper phasing. See Figure 5.
4. Route the thermostat wire up the side of the enclosure, securing the wire with the wire ties attached. Connect thermostat to the terminal strip on the front of the control box.
   Figure 5. Insert wires into the disconnect

For Units with Electric Heat

1. Place 6 pop-in wire ties into the 2 sets of 3 holes provided on the bottom of the control box. Cut and replace the 2 pop-in wire ties on bulkhead wall that are closest to access opening. Cut wire ties that are around the gasket that passes through the big hole in bulkhead wall, remove gasket and set aside.
2. Route each disconnect wire through one of the pop-in wire ties at both locations and then down the bulkhead wall using pop-in wire ties and into the electric heat compartment as shown in Figure 6. Figure 6. Route disconnect wire into the electric heat compartment
3. Create a drip loop at the TBUE enclosure when routing these wires.
4. Terminate the wire in the distribution block located in the electric heat section per unit wiring diagram. See Figure 7.
5. Place gasket around wires on compressor side of bulkhead wall and secure with 2 wire ties.
   Figure 7. Distribution block

For Units with no Heat/Gas Heat

1. Route wire from disconnect into the control box as shown in Figure 8.
2. Create a drip loop at the TBUE enclosure when routing these wires.
3. Terminate the wire in the distribution block located in the control box per unit wiring diagram. See Figure 8.
4. Secure the wire with a pop-in wire tie in the control box.

Figure 8. Route wire into the control box Installing Flip Switch Cover for Disconnect

1. On unit access panel, pop-out knockout using flat head screw driver.
2. Remove flip switch cover from packaging and pop out gasket seal per instructions on cover packaging.
3. Using the 2 screws (6-32) provided in the kit bag, secure flip switch cover to front access panel as shown in Figure 9.
4. Place label “unit disconnect switch located behind this cover” above flip switch cover on unit access panel as shown in Figure 9.

Figure 9. Install flip switch cover For Units With no Internal Disconnect

1. Remove plastic plugs from corner post.

2. Install the enclosure as stated in “Install the Enclosure”.

3. Use the holes provided in the corner post to route wires to and from the external disconnect. See Figure 10.
   Figure 10. Route wires to and from external disconnect

4.  Remove the bottom bracket with the gasket on it and route wires through the three holes. See Figure 11.

5. Reinstall the bracket and gasket.

6. Route wires through unit as stated in “For Units with Electric Heat” or “For Units with no Heat/Gas Heat” depending on unit heat configuration.

Figure 11. Route wires through the three holes

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.
©2022 ACC-SVN151D-EN 03 Dec 2022 Supersedes ACC-SVN151C-EN (Apr 2020)

References

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

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