Trane BAYENTH322 Foundation Packaged Rooftop Units with Low Leak Economizer Instruction Manual
- August 30, 2024
- Trane
Table of Contents
BAYENTH322 Foundation Packaged Rooftop Units with Low Leak Economizer
Product Information
Specifications
- Model: BAYENTH322*
- Capacity: 3 to 5 Tons
- Compatible with: E/GB036-060, E/GD036-060
- Economizer: Low Leak
Product Usage Instructions
Safety Precautions
Only qualified personnel should handle installation and
servicing to prevent hazards. Follow all safety advisories
mentioned in the manual to ensure personal safety.
Inspection
-
Inspect for shipping damage and report immediately if
found. -
Verify the received accessory matches the order number on the
shipping label.
Parts List
| Qty | Description |
|---|---|
| 1 | Outside air temperature/humidity sensor |
| 2 | Screws 6-32 x 0.75 |
Installation Procedure
Follow proper grounding procedures and ensure all field wiring
is performed by qualified personnel to avoid hazards. Discharge
capacitors before servicing to prevent electrical accidents.
FAQ
Q: Who should handle the installation of the product?
A: Only qualified personnel should install and
service the equipment to prevent hazards.
Q: What should be done if shipping damage is found?
A: Report any shipping damage immediately and
file a claim against the transportation company.
Installation Instructions
Reference Enthalpy
FoundationTM Packaged Rooftop Units with Low Leak Economizer 3 to 5 Tons
Model Number: BAYENTH322*
Used With:
E/GB036-060 E/GD036-060
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.
August 2024
ACC-SVN209E-EN
©2024
4
Inspection
1. Check carefully for shipping damage. If any damage is found, report it
immediately, and file a claim against the transportation company. Replace
damaged parts with authorized parts only.
2. Compare the order number on the shipping label with the accessory
identification information on the ordering and shipping documents to verify
that the correct accessory has been received.
Parts List
Table 1. Parts list
Qty
Description
1
Outside air temperature/humidity sensor
2
Screws 6-32 x 0.75
1
Harness; wire – OA humidity sensor
1
Installed accessory label
1
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
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.
2
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.
5
Installation Procedure
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.
NOTICE
Electrostatic Discharge!
Electrostatic discharge can short equipment circuitry. Ensure that you are
properly grounded before handling sensitive electronic equipment.
6 Outside Air Temperature/Humidity Sensor Installation Downflow Units
1. Remove access panels. See Figure 1.
Figure 1. Remove access panels
3
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.
WARNING R-454B Flammable A2L Refrigerant!
Failure to use proper equipment or components as described below could result
in equipment failure, and possibly fire, which could result in death, serious
injury, or equipment damage. The equipment described in this manual uses
R-454B refrigerant which is flammable (A2L). Use ONLY R-454B rated service
equipment and components. For specific handling concerns with R-454B, contact
your local representative.
Copyright Trademarks
All trademarks referenced in this document are the trademarks of their
respective owners.
7
2. Remove the existing outside air temperature (OAT) sensor and disconnect
the OAT sensor harness from the OAT pin of the controller. See Figure 2 and
Figure 3. Discard existing OAT sensor and OAT harness.
Figure 2. Remove sensor
Outside Air Sensor
Note: The new sensor in this kit reads both temperature and humidity. The existing OAT sensor harness must be removed from the OAT pin on the controller or the controller will display a configuration error.
8 Figure 3. Disconnect OAT sensor harness
9 Figure 4. Verify DIP switches on new sensor
10
4. Secure OAE sensor to LLE panel using the screws provided in this kit as
shown in Figure 5.
Figure 5. Attach outside air humidity sensor
11
6. Route harness to controller using pop in wire ties provided in locations
shown in Figure 6.
Figure 6. Wire routing and connections
Pop-in wire tie (Outdoor Air Humidity/Temperature Sensor Wire Harness)
Outdoor Air Humidity/Temperature Sensor Wire Harness
Snap Bush for Outdoor Air Harness
Outside Air Humidity/Temperature Sensor End Connection
3. Remove the new outside air temperature/humidity (OAE) sensor from box and
verify DIP switch settings are set to OA per the label on the sensor. See
Figure 3.
Note: The protective film on the DIP switch is only necessary during the
assembly process. Simply push through the film to set the DIP switches. This
will not harm the device.
Table 2. Sensor DIP switch positions for switches 1, 2, and 3
Use
1
RA
ON
OA
OFF
RA = Return Air Temp/Humidity OA = Outside Air Temp/Humidity (default setting)
2 OFF OFF
3 OFF OFF
5. Connect OAE sensor harness provided in this kit to S-BUS pins on the
sensor and route through bushing in the LLE panel. See Figure 5.
Note: Polarity insensitive connections.
Outdoor Air Humidity/Temperature Sensor Controller End Connection
7. Connect OAE wire harness to economizer controller S-BUS pin per unit wiring diagram as shown in Figure 6.
12 Outside Air Temperature/Humidity Sensor Installation Horizontal Unitsa
1. Follow the same instruction as downflow unit from Step 1 to Step 5 and
route OAE harness.
2. Connect OAE wire harness to economizer controller S-BUS pin. See Figure 7.
Figure 7. Wire routing and connections
13
Controller Setup (Field and Factory Installed)
1. Verify the correct ENTH CURVE parameter is set in the economizer
controller. See Table 3.
Note: The default parameter value for enthalpy is set to ES3 on the
controller.
Table 3. Single enthalpy and dual enthalpy boundaries (parameters ES1 through
ES5)
Enth. curve
Temp. Temp. Enthalpy
Point P1
dry-bulb dew point (btu/lb/
(ºF)
(ºF)
da)
Temp. ºF
Humidity %RH
Point P2
Temp. ºF
Humidity %RH
ES1
80.0
60.0
28.0
80.0
36.8
66.3
80.1
ES2
75.0
57.0
26.0
75.0
39.6
63.3
80.0
ES3
70.0
54.0
24.0
70.0
42.3
59.7
81.4
ES4
65.0
51.0
22.0
65.0
44.8
55.7
84.2
ES5
60.0
48.0
20.0
60.0
46.9
51.3
88.5
HL
86.0
66.0
32.4
86.0
38.9
72.4
80.3
Note: For differential enthalpy there is a high limit boundary. The high limit boundary is ES1 when there are no stages of mechanical cooling energized and HL when a compressor stage is energized.
2. To change the enthalpy parameter on the controller use the down arrow,
navigate to SETPOINTS, and press Enter. Scroll down (using down arrow) to ENTH
CURVE, press Enter and use the Up/Down arrow to view the parameter values.
To select the parameter, press Enter to accept the displayed value and store
it in non-volatile RAM. The screen will then display CHANGE STORED. Press the
Menu (Up/Exit) button to return to the previous menu. See Table 3 and Figure
8.
Notes:
· During setup, the economizer module is live at all times.
· There will be a slight delay during start-up while the controller and OAE
sensor communicate.
14
3. Place label next to unit nameplate. 4. Secure filter access panel back on
to the unit.
Figure 8. Single enthalpy curve and boundaries
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-SVN209E-EN 23 Aug 2024 Supersedes ACC-SVN209D-EN (Jul 2024)
©2024
References
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