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Trane BAYECON101A Installer's Manual
Trane BAYECON101A Installer's Manual

Trane BAYECON101A Installer's Manual

Down discharge economizer and rain hood

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Model:
BAYECON101A
BAYECON102A
BAYRLAY004A
WARNING:
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service
information pack upon completion of work.
General
The economizer is a multi-damper design. It is installed in the
return air stream and is connected to the unit low voltage sup-
ply through wire leads. The economizer is fully accessible
through the Coil access panel.
Important: The Economizer installation requires that you first
install an air filter rack ordered separately. Use:
BAYFLTR101B for 2/4YC*, WC*, TC*, DC* *018-3036
BAYFLTR201B for 2/4YC*, WC*, TC*, DC* *042-3060.
When the economizer is installed in WC* models, relay
accessory kit BAYRLAY004A is required. Refer to the drawing
on page 9 to make your relay wiring connections in the Control
Box.
Identify Economizer Kit Contents
Refer to Figures 1 and 2 on page 2 to identify the kit
contents.
Inspect Contents
You must report damage and make claims to the transporta-
tion company immediately. Report missing parts to your sup-
plier immediately and replace with authorized parts only.
!
WARNING
ELECTRIC SHOCK HAZARD
OPEN AND LOCK OUT ALL UNIT DISCONNECTS PRIOR TO
ACCESSORY INSTALLATION OR UNIT MAINTENANCE, TO
PREVENT INJURY OR DEATH FROM ELECTRICAL SHOCK OR
CONTACT WITH MOVING PARTS.
WARNING
!
SAFETY HAZARD
DO NOT REMOVE END COVERS FROM ECONOMIZER AC-
TUATOR; THE SPRING-RETURN ASSEMBLY MAY RELEASE
AND CAUSE PERSONAL INJURY.
Installer's Guide
Down Discharge Economizer and Rain Hood
Used with:
2/4TC*,WC*,YC*,DC* *018-036
2/4TC*,WC*,YC*, DC* *042-060
(Relay required in WC* Units)
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
Install Economizer Kit
1. Remove Power
Disconnect and verify that power is off.
2. Remove Access Panels
Remove these four (4) access panels (see Figure 3, page 2):
• Control/Heat access panel
• Blower access panel
• Coil access panel
• Horizontal Return Air panel (discard or store)
3. Install Economizer Assembly
Note: You must first install the filter rack per the instruc-
tions provided and then install the economizer.
!
Use care when inserting the economizer in the return air com-
partment, to prevent damaging the foil faced insulation.
1. The economizer ships with the return air damper folded
up to allow the assembly to fit through the Coil opening
in the side of the unit, see Figures 1 and 2 on page 2.
Insert the economizer assembly into the unit through the
Coil access panel opening. See Figure 4 on page 3.
2. Swing the return air damper section down so that it rests
on the bottom of the unit. The economizer will sit
completely over the return air opening in the bottom of
the unit. See Figures 5 on page 4. Screw the economizer
assembly together with one assembly screw in the side of
the economizer. Tighten the linkage rod between the
return air dampers.
3. Insert 2 screws through the holes in the front face of the
unit and into the matching attachment holes in the econo
mizer assembly. See Figure 6 on page 4.
Insert a screw through the pre-punched hole in the side
4.
flange of the return air damper and into the mating hole
in the economizer assembly and tighten. See Figure 5 on
page 4.
18-HE39D8-10
CAUTION

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Summary of Contents for Trane BAYECON101A

  • Page 1 18-HE39D8-10 Installer’s Guide Down Discharge Economizer and Rain Hood Model: Used with: 2/4TC*,WC*,YC*,DC* *018-036 BAYECON101A 2/4TC*,WC*,YC*, DC* *042-060 BAYECON102A BAYRLAY004A (Relay required in WC* Units) WARNING: HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT —...
  • Page 2 INSTALLER’S GUIDE Mixed Air Sensor Mixed Air Sensor Economizer Assembly Economizer Assembly Return Air Damper Return Air Damper Mist Mist Flange Screw and Flange Screw and Eliminator Eliminator two (2) Mixed Air two (2) Mixed Air (Filter) (Filter) Sensor Sensor Sheetmetal Screws Sheetmetal Screws (not shown)
  • Page 3 INSTALLER’S GUIDE 4. Install Rain Hood Assembly 7. Complete Installation 1. Locate the rainhood assembly, which includes the relief damper 1. In the Control Box, complete the wiring connections per the and the mist eliminator. The back of the hood side mating flanges appropriate wiring diagram on pages 8 and 9.
  • Page 4 INSTALLER’S GUIDE 1.) Swing Down Economizer Return Air Damper Return Air Damper 3.) Tighten Linkage rod 2.) Insert Assembly screw Figure 5. Swing Down and Set Economizer Return Air Damper Economizer outline Economizer and Return Air Damper Install two (2) screws into holes.
  • Page 5 INSTALLER’S GUIDE Top flange of hood slides under HVAC unit’s top sealing flange HVAC unit’s top sealing flange Unit’s top sealing flange Economizer rain Hood HVAC unit hood 1. Loosen the two (2) screws to allow Detail hood to slide under top sealing flange of the unit.
  • Page 6 INSTALLER’S GUIDE Economizer Unit Application Models 2/4TC*,WC*,YC*,DC* BAYECON101A 20.125" *018-036 2/4TC*,WC*,YC*, DC* BAYECON102A 24.375" *042-060 Economizer rain hood Outside air dampers Return air Required filter dampers kit, order separately Mist eliminator (filter) Relief damper Return Duct Roofcurb Figure 8. Rain Hood, Economizer, and Filter 1.80"...
  • Page 7 INSTALLER’S GUIDE Coil Grommet View ‘A’ 3.) Pull the two (2) Mixed Air Sensor Wires (with female quick connects) 2.) Continue 1.) From from the Harness and Routing Behind EconomizerAssembly, Route Down Near the Compressor Pass Wire Harness Mixed Air Sensor. Connect Compartment Through Coil Grom- to sensor...
  • Page 8 INSTALLER’S GUIDE Figure 11. TC*/YC* Economizer Connection Diagram PAGE 8...
  • Page 9 INSTALLER’S GUIDE Figure 12. WC* Economizer Connection Diagram PAGE 9...
  • Page 10 INSTALLER’S GUIDE 5. Checkout Operate the motor through its complete open-close stroke. If 1. The motor operates the load. necessary, release one of the previously tightened linkage con- 2. The motor responds properly to the controller. nections to prevent damage. Check for proper operation, making 3.
  • Page 11: Checkout Procedure

    INSTALLER’S GUIDE Table 2. Enthalpy Checkout Procedure Checkout Procedure Response 1. Disconnect power at TR and TR1. LED is off. 2. Disconnect jumper P to P1. Motor is in closed position. 3. Jumper TR to 1. 4. Jumper T1 to T. 5.
  • Page 12 INSTALLER’S GUIDE Table 3. Temp vs. OHM Values for MAS (Mixed Air Sensor) Temp vs. OHMS for MAS (Mixed Air Sensor) Temp F Temp C R(K OHMS) DC Volts 33.8 9.576 3.910 35.6 9.092 3.882 37.4 8.636 3.894 39.2 8.204 3.863 41.0 7.796...
  • Page 13 INSTALLER’S GUIDE Troubleshooting - No Minimum Fresh Air Minimum Fresh Air Damper will not open Locate Minimum Check for 24 volts Is 24V present to Position across TR and Green “G” lead at low 24 volts No voltage Potentiometer on TR1 terminals on voltage field Logic Module...
  • Page 14 INSTALLER’S GUIDE Troubleshooting - Unit Will Not Economize Dampers will not open beyond minimum position during 1 stage cooling. Jumper across the Ambient must be below 70F to activate Is OD ambient OAS terminals to Is OAS closed? economizer beyond minimum position fresh below 70F? close circuit.
  • Page 15 INSTALLER’S GUIDE Troubleshooting - 2nd Stage Inoperable Compressor will not energize when space conditions rise. Install a 2 stage thermostat and Is a 2-stage Is thermostat’s Y2 Wire per Installer’s wire according to economizer thermostat connected to unit’s YL Guide. Installer’s Guide.
  • Page 16 INSTALLER’S GUIDE Troubleshooting - Dampers Open With G Dampers drive to 100% open during a “Continuous Fan” call. (drives beyond Ensure there is not a call for cooling. minimum position setting) Rotate Minimum Position potentiometer fully Measure resistance of Adjust Minimum Does damper green resistor Position to desired...
  • Page 17 INSTALLER’S GUIDE Troubleshooting - Mixed Air Sensor Dampers drive to 100% open although the mixed air temp is below 55F. Remove MAS wires from “T” and It can be possible for the tip “T1” terminals on of the MAS to twist near the logic module.
  • Page 18 INSTALLER’S GUIDE Troubleshooting - Logic Module Failures Logic Module has repeated failures Remove MAS wires from “T” and “T1” terminals at logic module. Measure resistance from either MAS wire to cabinet ground. Check other Did you find terminals for Replace MAS any continuity? shorting.
  • Page 19 INSTALLER’S GUIDE PAGE 19...
  • Page 20 INSTALLER’S GUIDE Trane The manufacturer has a policy of continuous product and 6200 Troup Highway product data improvement. It reserves the right to change Tyler, TX 75707-9010 © 2010 Trane design and specification without notice. PAGE 20...

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Bayecon102aBayrlay004a