Trane Precedent FIADAST003 Series User manual

August 2022 ACC-SVN240A-EN
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.
Discharge Air Sensing Kit
Precedent™ Packaged Rooftop Units
Installation Instructions
Model Number: Used With:
FIADAST003* Precedent B cabinet (digit 39 = B) - T/WS*072-120
FIADAST004* Precedent B cabinet (digit 39 = B) - Y/DS*072-120
FIADAST005* Precedent C cabinet (digit 39 = C) - T/WS*150
FIADAST006* Precedent C cabinet (digit 39 = C) - Y/DS*150
FIADAST007* Precedent D cabinet (digit 11 = L, digit 39 = D), T/YS*180-300, T/YH*150-300,
W/D/GS*150-300
FIADAST008* Precedent D cabinet (digit 11 = 0/M/H/B/C/E/G/K/N/P/R, digit 39 = D), T/YS*180-300,
T/YH*150-300, W/D/GS*150-300

©2022 ACC-SVN240A-EN
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.
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.
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.
CAUTIONsIndicates 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.
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.

Introduction
ACC-SVN240A-EN 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.
Trademarks
All trademarks referenced in this document are the trademarks of their respective owners.
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.

Table of Contents
4ACC-SVN240A-EN
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

ACC-SVN240A-EN 5
General Information
Notes:
•An options board (FIAOPTN002*) must be installed in the unit for the this accessory to operate.
•Supply air sensing tube is standard on SZVAV, MZVAV, and economizer units.
This discharge air sensing kit is designed to sense the supply air temperature downstream of the
fan and/or heat exchanger.
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
FIADAST003* T/W Models (digit 39 = B)
FIADAST004* Y/D Models (digit 39 = B)
Quantity Description
1 Temperature sensing module
7Sensingtubes
3 Mounting brackets
1 Pipe insulation
16 Screws
Quantity Description
1 Temperature sensing module
5Sensingtubes
4 Mounting brackets
1 Pipe insulation
16 Screws

6ACC-SVN240A-EN
General Information
FIADAST005* T/W Models (digit 39 = C)
FIADAST006* Y/D Models (digit 39 = C)
FIADAST007/8* (digit 39 = D)
Quantity Description
1 Temperature sensing module
6Sensingtubes
3 Mounting brackets
1 Pipe insulation
12 Screws
Quantity Description
1 Temperature sensing module
4Sensingtubes
2 Mounting brackets
1 Pipe insulation
12 Screws
Quantity Description
4Sensingtubes
1Temperature sensing module (including Sensor bracket, Harness assembly, Insulation,
Wire ties, Sensor bracket screw, and Cap to sensing tube screw connection)
1 Mounting bracket
4 Screws for mounting bracket to fan wall
3 Screws for sampling tube connections

ACC-SVN240A-EN 7
Installation
Note: See Figure 3 and Figure 4 for discharge air temperature.
WARNING
Hazardous Voltage!
Failure to follow instructions below could result in death or serious injury.
Power down the outdoor unit before making contact with the inverter circuit board. Follow
proper lockout/tagout procedures to ensure the power cannot be inadvertently
energized.Wait for at least 15 minutes to allow the unit to fully discharge high DC voltage.
Confirm the unit is fully discharged using a CAT III or IV voltmeter rated per NFPA 70E.
Figure 1. T/WS*072-120 downflow and horizontal - FIADAST003 and FIADAST005 electric heat
Module, indoor fan,
temperature sensing
Bracket,
DAS support
Bracket,
DAS support
Insulation Insulation
Tube,discharge
air sensing
Tube,discharge
air sensing
Tube, discharge
air rotating
Tube, discharge
air rotating
Tube, discharge
air sensing, convertible
Tube, discharge
air sensing,
convertible
Tube, discharge
air connecting
Tube, discharge
air sensing, sampling Tube, discharge
air sensing, sampling
Bracket, discharge
air sensor, top
Bracket, discharge
air sensor, top
Downflow Horizontal

8ACC-SVN240A-EN
Installation
Figure 2. T/WS*150 downflow and horizontal
Module, indoor fan,
temperature sensing
Bracket,
DAS support Tube, discharge
air sensing
Tube, discharge
air rotating
Tube, discharge
air rotating
Tube, discharge
air connecting
Tube,
discharge
air sensing, sampling
Bracket, discharge
air sensor, top
Bracket, discharge
air sensor, top
Tube, discharge
air sensing, convertible
Bracket,
DAS support
Insulation
Insulation
Tube, discharge
air sensing
Tube, discharge
air rotating
Tube,
discharge
air connecting
Tube,
discharge
air sensing, sampling
Downflow Horizontal
Figure 3. Discharge air temperature - downflow and horizontal - view 1
Figure 4. Discharge air temperature - downflow and horizontal - view 2

ACC-SVN240A-EN 9
Installation
Figure 5. For model: D cabinet (digit 39 = D) downflow installation
Temperature sensing assembly with
insulation
Secure clamp with
screws into fan wall
Secure four tubes
with screws
Tube position with
5x5 Gas HX (digit 11 = L),
FIADAST007*
Tube position with
7x7, 8x8 Gas HX,
Electric Heat or Cooling Only,
FIADAST008*
Sensing tube holes face
vertically upward towards fan
Figure 6. FIADAST004_B.0 and FIADAST006_C.0 - gas heat. See Figure 7.

10 ACC-SVN240A-EN
Installation
Figure 7. FIADAST004_B.0 and C.0 in machine
Figure 8. FIADAST004_B.0 and C.0 gap setting

ACC-SVN240A-EN 11
Installation
1. Turn the main power disconnect switch OFF.
2. Remove the filter access panel.
3. Remove the rear access panel directly above the horizontal supply duct cover. The sensor tube
will hang from the fan divider wall with service access to the fan wall from both the rear access
panel as well as access through the supply duct opening. Refer to Figure 14.
4. Remove the supply air duct cover on the rear side of the unit.
5. Install the sensing tube through the fan wall hole as shown in Figure 10.
Table 1. Gap analysis chart – B.0 and C.0 cabinet
Heater Type HZ Gap Low DF Gap Low HZ Gap Med DF Gap Med HZ Gap High DF Gap High
TLSP; GAS heat, B0 Cabinet, 3x3, L2 3/4 inch 3/4 inch
TLSP; GAS heat, B0 Cabinet, 3x4, L2 3/4 inch 3/4 inch 3/4 inch 3/4 inch
TLSP; GAS heat, B0 Cabinet, 4x5, L2 3/4 inch 3/4 inch 3/4 inch Tight 3/4 inch Tight
TLSP; GAS heat, B0 Cabinet, 6x7, L2 3/4 inch Tight 3/4 inch Tight
TLSP; GAS heat, C0 Cabinet, 4x5, L3 1/8 inch 1/8 inch 1/8 inch 3/4 inch
TLSP; GAS heat, C0 Cabinet, 6x7, L3 1/8 inch 1/8 inch
Figure 9. For model: D cabinet (digit 39 = D) horizontal installation
Temperature sensing assembly
with insulation
Secure clamp with
screws into fan wall
Secure three tubes
with screws
Tubing holes face towards front of unit
(opposite horizontal supply duct)
Tubing holes face vertically
upwards toward fan

12 ACC-SVN240A-EN
Installation
6. Secure the mounting bracket to divider with four screws holding the sensing tubes in place
against the fan wall as shown in the following figures.
Figure 10. For model: D cabinet (digit 39 = D), install sensing tube
Insert sensing tube through
knockout in divider
Remove rear
access panel
Remove supply
duct cover
Assemble sensing
tubes (three or four tubes)
secure with screws
Figure 11. For model: D cabinet (digit 39 = D) downflow installation
Sensing tubes
Mounting bracket

ACC-SVN240A-EN 13
Installation
7. Move to the rear of the unit. First, ensure the temperature sensing module assembly matches
Figure 13. Place the sensor assembly over the sensor tube. Secure sensor assembly to sensor
tube with the single screw. Verify that insulation is installed around the temperature sensing
assembly with a wire tie. See Figure 14.
Figure 12. For model: D cabinet (digit 39 = D) horizontal installation
Sensing tubes Mounting bracket
Figure 13. For model: D cabinet (digit 39 = D) sensor temperature sensing module installation
Temperature sensing
module
Use temperature sensing module
screw to attach to the sensor tube

14 ACC-SVN240A-EN
Installation
Note: See Figure 5 for sensing tube holes.
8. Connect PPF177 which has been factory installed in unit and is located in the general area that
the temperature sensor is being mounted to module assembly connector. Refer to the unit level
schematics for full circuit layout. After installation is complete, the Symbio™700 UC
configuration will need to be updated to enable this installed feature.
9. Replace access panels and duct cover.
10. Turn the main power disconnect switch to ON.
Figure 14. Verify wire harness and insulation installed around temperature sensing assembly
Sensor module
wire harness
Insulation secured to
outside of temperature
sensing module
with wire tie
Small bracket
holding temperature
sensor in place
Sensing tubes

ACC-SVN240A-EN 15
Notes

©2022
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.
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.
ACC-SVN240A-EN 29 Aug 2022
(NEW)