TRANE ACC-SVN264C Low Leak Economizer Precedent Packaged Rooftop Units Instruction Manual

TRANE ACC-SVN264C Low Leak Economizer Precedent Packaged Rooftop Units

Product Information

• Product Name: Low Leak Economizer
• Model Number: FIAECON102, FIAECON103, FIAECON203*
• Used With: Downflow – T/YS072-150, T/YH072-150, Downflow – T/YS180-300, T/YH180-300, T/YZ*150-300, W/D/G*150-300, Horizontal – T/YS180-300, T/YH180-300, T/YZ150-300, W/D/G**150-300

Product Usage Instructions

• Only qualified personnel should install and service the equipment.
• Before operating or servicing the unit, thoroughly read the user manual.
• Observe all precautions mentioned in the literature, tags, stickers, and labels attached to the equipment.
• Follow the safety advisories provided in the manual:
  • WARNING: Indicates potentially hazardous situations that may result in death or serious injury.
  • CAUTION: Indicates potentially hazardous situations that may result in minor or moderate injury. It can also be used to alert against unsafe practices.
  • NOTICE: Indicates situations that may result in equipment or property damage only accidents.
• Ensure proper field wiring and grounding:
  • WARNING: All field wiring must be performed by qualified personnel to avoid fire and electrocution hazards. Follow NEC and local/state/national electrical codes for field wiring installation and grounding.
• Use appropriate Personal Protective Equipment (PPE) for the job:
  • WARNING: Failure to wear proper PPE may result in death or serious injury. Follow precautions mentioned in the manual, as well as on the tags, stickers, and labels.
• Follow Environmental, Health, and Safety (EHS) policies.

Please note that this document and its content are the property of Trane. Any use or reproduction of the document, in whole or in part, without written permission from Trane is prohibited. Trane reserves the right to revise this publication at any time without obligation to notify any person of such revision or change. All trademarks referenced in this document are the trademarks of their respective owners.

Introduction

Read this manual thoroughly before operating or servicing this unit.

Warnings, Cautions, and Notices
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.

CAUTIONs: 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-including industry replacements for CFCs and HCFCs such as saturated or unsaturated HFCs and HCFCs.

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 country-specific 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
Added T/YH072-150, T/YH180-300, T/YZ*150-300 Used With information on the front cover.

**General Information – FIAECON102***
This section covers installation of low leak economizers for 6 to 12.5 ton downflow units in the B and C cabinet (digit 39 = B,C).

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
Table 1. Parts list

Installation – FIAECON102*

WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized.

1. Remove the existing economizer hood end panel (factory installed) from the unit and discard (see Figure 1).

2. Apply 1-inch gasket material to disassembled unit. See Figure 2. Table 2. Parts list
   

3. Remove the hood top from the non-linkage side of the economizer and set aside for Step 7.

4. Install economizer in the unit, shift left, and install single screw into alignment holes.
   Note: Screw will be removed later.

5. Use self-drilling screws through remaining large holes around perimeter of economizer.

6. Remove alignment screw.
   Figure 3. Pictorial layout of previous steps

7. Assemble flange to hood top (removed in Step 3), then to hood triangles and attach to economizer. See Figure 4, p. 7.

8. Install mist eliminator into hood assembly and secure with filter clips provided on hood top.

9. Install filler panel above hood if necessary (does not apply to all models).

10. Remove shipping screw from aluminum barometric relief blade.

11. If a powered exhaust will be installed go to “Powered Exhaust,” p. 7.

12. Assemble and install barometric relief hood.

Powered Exhaust

1. Remove aluminum barometric relief blade and discard.

2. Open 1-inch hole near the gear side of the economizer and install 1-inch grommet.
   Note: Grommet in economizer parts bag.

3. Partially insert self-drilling screws in three dimples above power exhaust opening and just below top economizer hood. See Figure 6.
   Note: Do not re-use barometric relief damper holes.

4. Install gasketing around perimeter of powered exhaust assembly.

5. Route the powered exhaust wire harness through the 1-inch hole near the gear side of the economizer.

6. Hang powered exhaust on three partially inserted screws and remove the slack in wire harness.

7. Attach powered exhaust with self-drilling screws. See Figure 6.

8. Verify wire harness is clear of gears, doors, and any sharp edges of metal.

9. Hook up electrical as described in literature ACC-SVN57*-EN.

Smoke Detector

1. If a smoke detector is installed, remove the copper or aluminum pipe, and flexible tubing from above return air opening, and all associated brackets.
   Note: Grommets are in the economizer parts bag.

2. Attach retaining bracket to pipe. See Figure 7 for the large economizer, drill a 1/8-inch hole drilled in pipe on opposite side of existing breathing holes.
   Notes:

   • Retaining bracket in the economizer parts bag.
   • In Figure 7, intake holes must be down for unit to work. Figure 7. Tubing

3. Insert smoke detector pipe into hole of economizer (next to RTEM board) and into back bracket inside economizer.

4. Using a self-drilling screw, attach retaining bracket to economizer. See Figure 8, p. 8.

5. Shorten flexible tubing and connect from the copper tubing to the smoke detector unit.

Important: Verify holes in copper tube are facing down. Unit will not sense smoke if holes are not facing down.

Economizer Wiring
Once economizer has been installed, plug actuator harness into J11 on fresh air module. Refer to Figure 9 for fresh air module access.

Minimum Position Setting for One Speed Indoor Fan

1. Apply power to the unit.
2. Place the zone sensor fan selector in the fan ON position and the heat/cool selector in the OFF position to place the damper in the minimum ventilation position.
3. The Min Position (on the rooftop economizer) can be adjusted using the Symbio™ 700 or Mobile App. In the Settings -> Fresh/Return Air Menu the Minimum Position can be adjusted between 0-50%.
4. Wait at least 30 seconds for the damper to settle at the new position.
5. Replace the filter access panel. The damper will close when the blower circuit is no longer energized.

Minimum Position Setting

1. Apply power to the unit.
2. Using Service Test mode, through the Symbio™ 700 or mobile app, set the unit to Service Test step Ventilation Low Fan Speed.
3. Navigate to the Settings –> Fresh/Return Air menu. Set the Design Minimum OA Damper Position at Min Fan Capacity to the desired value.
4. Wait at least 30 seconds for the damper to settle at the new position. Range of damper for this setting is 0-100%.
5. Using Service Test mode, through the Symbio™ 700 or mobile app, set the unit to Service Test step Ventilation Low Fan Speed.
6. Navigate to the Settings –> Fresh/Return Air menu. Set the Design Minimum OA Damper Position at Mid Fan Capacity to the desired value.
7. Wait at least 30 seconds for the damper to settle at the new position. Range of damper for this setting is 0-100%.
8. Using Service Test mode, through the Symbio™ 700 or mobile app, set the unit to Service Test step Ventilation Low Fan Speed.
9. Navigate to the Settings –> Fresh/Return Air menu. Set the Design Minimum OA Damper Position at Full Fan Capacity to the desired value.
10. Wait at least 30 seconds for the damper to settle at the new position. Range of damper for this setting is 0-100%.
11. Replace the filter access panel. The damper will close when the blower circuit is de-energized.

Dry Bulb Settings
Standard economizer dry bulb changeover is field selectable and has a range of 50-140ºF.

General Information – FIAECON103*

This section covers installation of low leak economizers for 12.5 to 25 ton downflow units in the D cabinet (digit 39 = D).

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

NOTICE
Corrosion Damage!
Failure to use recommended caulking/sealant could cause corrosion related failures to refrigerant components.

Table 3. Parts list

a) These parts are already installed in the factory installed option

Installation – FIAECON103*

CAUTION
Heavy Object!
Failure to follow instructions below could result in severe injury and equipment damage. Economizer weighs over 50 pounds and should be installed by two people.

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. Remove the unit end panel and both (front and rear) fresh air access panels from the unit and set them aside.

2. For a factory installed low leak economizer, skip directly to Step 10 of the installation instructions.

3. Remove both cartons containing ship with parts from the outdoor air damper assembly and discard any shipping brackets.

4. Remove contents of carton B and install the return air front block-off as shown in Figure 13 with #10-16 x 5/8 in. screws with sealing washer. Screws can be found in the hardware bag from carton A.

5. Install the outdoor air damper assembly as shown in Figure 14, p. 12 to the end of the unit and on the return air duct flange.

6. Refer to the barometric relief accessory literature (ACC-SVN156*-EN) and install the barometric block-off panels and gasket.

7. Install the outside air block-off panel on the left side of the outdoor air damper assembly as shown in Figure 17.

8. Secure outdoor air damper assembly to the return air front block-off that was previously installed in Step 4.

9. Route the controls harness from the actuator to the fresh air options module located in the return enclosure using the factory installed wire ties. Connect harness P11 to fresh air options module J11. Confirm the harness has a secure connection.
   Note: Wire ties have a releasable feature to allow them to be opened and closed.  For factory installed, start with below steps:

10. To allow for the barometric relief option installation, remove the return air rear block-off. Install the barometric relief option per the installation instructions (ACC-SVN156*-EN).

11. Attach the rear filter angle bracket to the unit with four screws along the bottom of the damper assembly. The surface between the two parts has gasket pre-installed on the bracket.

12. Attach the filter side angle brackets to both triangle hood panels using two screws each. The brackets should be installed on the flat side of the hood panel with the flanges facing away from the panel.

13. Attach the triangle hood panels on the left and right side of the damper assembly. Use five screws for each hood panel. The hood panels have pre-installed gasket between the hood panels and the damper assembly. The flanges of the panels are to the outside of the unit.

14. Install the hood front support bracket with two screws on each side onto the triangle hood panels. The hood front support bracket has pre-installed gasket that will face away from the unit.

15. Attach the filter top support bracket in the middle of the bottom of each triangle hood panels with two screws on each side panel so the flat surface is facing down.

16. Slide the filter into the filter frame that was just created in Step 11 – Step 15.

17. On the back panel removed and set aside in Step 1, attach the economizer diverter panel to the bottom of the back panel with four screws. The diverter panel will be on the outside surface with gasket pre-installed along the interface surface with the back panel.

18. With the back panel pre-bent, install the back panel over top of the economizer assembly and fasten with screws.
    

19. Install the access panels on the front and back of the unit. Note: The back panel will be replaced with the barometric relief hood and block-off panel.

20. Using field supplied silicone sealant, seal all seams, cracks  and gaps around the back panel and vertical edge of the hood panels.

General Information – FIAECON203*

This section covers installation of low leak economizers for 12.5 to 25 ton horizontal units in the D cabinet (digit 39 = D).

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
NOTICE Corrosion Damage!
Failure to use recommended caulking/sealant could cause corrosion related failures to refrigerant components.

Table 4. Parts list

Installation – FIAECON203*

CAUTION
Heavy Object! Failure to follow instructions below could result in severe injury and equipment damage. Economizer weighs over 50 pounds and should be installed by two people.

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.

Note: Horizontal duct conversion kit is needed for this installation and is not included in the low leak economizer assembly.

1. Remove the unit end panel and both (front and rear) fresh air access panels from the unit and set them aside.

2. Remove carton containing ship with parts from the outdoor air damper assembly.
   Refer to Figure 27 for the following assembly process.

3. Install the horizontal duct conversion kit per the instructions included with that kit.

4. Install the outdoor air damper assembly into the unit and connect the control harness to the actuator.

5. Connect the control harness to the actuator on the horizontal return air damper. Secure with wire ties and install the horizontal return air damper into the unit. Do not to trap or pinch the wire harness during damper installation.

6. Route the controls harness from the actuators to the fresh air options module located in the return enclosure using the factory installed wire ties. Be sure the harness is away from all moving parts of the damper assemblies. Connect harness P11 to fresh air options module J11. Confirm the harness has a secure connection.
   Note: Wire ties have a releasable feature to allow them to be opened and closed.

7. Install the outside air block-off panel on the left side of the outdoor air damper assembly as shown in Figure 30. If differential dry bulb kit is installed, install the thermistor sensor in the hood prior to this step.

8. Attach the rear filter angle bracket to the unit with four screws along the bottom of the damper assembly. The surface between the two parts has gasket pre-installed on the bracket.

9. Attach the filter side angle brackets to both triangle hood panels using two screws each. The brackets should be installed on the flat side of the hood panel with the flanges facing away from the panel.

10. Attach the triangle hood panels on the left and right side of the damper assembly. Use five screws for each hood panel. The hood panels have pre-installed gasket between the hood panels and the damper assembly. The flanges of the panels are to the outside of the unit.

11. Install the hood front support bracket with two screws on each side onto the triangle hood panels. The hood front support bracket has pre-installed gasket that will face away from the unit.

12. Attach the filter top support bracket in the middle of the bottom of each triangle hood panels with two screws on each side panel so the flat surface is facing down.

13. Slide the filter into the filter frame that was just created in Step 8 – Step 12.

14. On the back panel removed and set aside in Step 1, attach the economizer diverter panel to the bottom of the back panel with four screws. The diverter panel will be on the outside surface with gasket pre-installed along the interface surface with the back panel.

15. With the back panel pre-bent, install the back panel over top of the economizer assembly and fasten with screws.
    

16. Install the access panel on the front of the unit.

17. Using field supplied silicone sealant, seal all seams, cracks and gaps around the back panel and vertical edge of the hood panels.

Differential Dry Bulb

Parts List

Table 5. Parts list

Installation

1. Insert the molded grommet into the barometric relief block-off panel.
2. Install the thermistor sensor into the grommet (refer to Figure 34 for downflow and Figure 36 for horizontal installation).
3. Connect the control harness and route the controls harness from the sensor to the fresh air options module located in the return enclosure using the factory installed wire ties. Connect the harness J9 connector to the fresh air options module P9 and fastened with wire ties to keep the harness from any moving parts on the low leak economizer. Confirm the harness has a secure connection.

Notes:

• Wire ties have a releasable feature to allow them to be opened and closed.
• Uninstalled components are located in the return enclosure.

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.

ACC-SVN264C-EN 15 Apr 2023
Supersedes ACC-SVN264B-EN (Nov 2022)

References

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

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