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Installer's Guide
Down Discharge Economizer and Rain Hood
Model:
BAYECON107A
BAYECON108A
BAYRLAY006B
Note: * indicates an alphanumeric character.
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilat-
ing, 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.
November 2024
Used with:
*DCZ, *WCZ, *YCZ *018-036
*DCZ, *WCZ, *YCZ *042-060
(Relay required in
*WC*
SAFETY WARNING
18-HE138D1-1A-EN
Units)
Note: "Graphics in this document are for
representation only. Actual model may
differ in appearance."
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Related Manuals for Trane BAYECON108A
Summary of Contents for Trane BAYECON108A
- Page 1 Installer’s Guide Down Discharge Economizer and Rain Hood Model: Used with: BAYECON107A *DCZ, *WCZ, *YCZ *018-036 BAYECON108A *DCZ, *WCZ, *YCZ *042-060 BAYRLAY006B (Relay required in Units) *WC* Note: “Graphics in this document are for representation only. Actual model may differ in appearance.”...
- Page 2 INSTALLER’S GUIDE WARNING: HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT — This Document is customer property Install Economizer Kit and is to remain with this unit. Please return to service 1.
- Page 3 INSTALLER’S GUIDE 8. Complete Installation (*WCZ, *DCZ, *YCZ) Insert a screw through the pre-punched hole in the side flange of the return air damper and into the mating hole In the Control Box, locate the ICMC Board in the upper in the economizer assembly and tighten.
- Page 4 Make sure you line up the bottom/top hole of the gear to the blade in the damper. • Make sure the top of the brackets on return air blades are facing each other (screw heads facing each other) as shown. Gear Gear Clip Clip BAYECON107A BAYECON108A...
- Page 5 INSTALLER’S GUIDE Mixed Air Sensor Mixed Air Sensor Outside Air Sensor Outside Air Sensor Economizer Assembly Economizer Assembly Mist Eliminator Mist Eliminator (Filter) (Filter) Outside Air Sensor Outside Air Sensor Rainhood Assembly Rainhood Assembly Figure 1. Economizer Kit Components Figure 2. Economizer Kit Components Top Sealing Flange Horizontal...
- Page 6 INSTALLER’S GUIDE DC, TC, YC, WC Unit Insert economizer in folded shipping position Economizer actuator and controller Dry bulb outside air temperature sensor Figure 4. Insert Economizer in Shipping Position 1.) Swing Down Return Air Damper Economizer Return Air Damper 3.) Install Gear and E-Cips 2.) Insert Assembly screw...
- Page 7 INSTALLER’S GUIDE Economizer outline P-clamp In parts bag Economizer and Return Air Damper Install two (2) screws into holes. Leave extended from unit 1/2". Apply gasket between damper assembly and hood. Figure 6. Start Economizer’s Front Mounting Screws Top flange of hood slides under HVAC unit’s top sealing flange...
- Page 8 INSTALLER’S GUIDE ICMC Board Relays Figure 8. Mount BAYRLAY006B Economizer Unit Application Models *WCZ-024, 036 *DCZ-024, 036 BAYECON107 20 1/8” *YCZ-024, 036 *WCZ-042, 060 BAYECON108 *DCZ-042, 060 24 3/8” *YCZ-042, 060 Figure 9. Rain Hood, Economizer, and Filter...
- Page 9 INSTALLER’S GUIDE 1.80” 2.82” See View ‘A’ Mount the Mixed Air View ‘A’ Approximate Sensor to the partition Mounting Dimensions using two (2) sheetmetal screws. See view A for approximate positioning Figure 10. Mount Mixed Air Sensor in Blower Compartment 2.) Continue routing 3.) Pull the two (2) Mixed Air 1.) From economizer...
- Page 10 INSTALLER’S GUIDE Figure 12. 5YCZ Economizer Connection Diagram IMPORTANT-Retain this wiring diagram; please return this document to service information pack upon completion of work.
- Page 11 INSTALLER’S GUIDE Figure 13. 5WCZ/DCZ Economizer Connection Diagram IMPORTANT-Retain this wiring diagram; please return this document to service information pack upon completion of work.
- Page 12 INSTALLER’S GUIDE Figure 14. 2/4WCZ/DCZ Economizer Connection Diagram IMPORTANT-Retain this wiring diagram; please return this document to service information pack upon completion of work.
- Page 13 INSTALLER’S GUIDE Figure 15. 2/4YCZ Economizer Connection Diagram IMPORTANT-Retain this wiring diagram; please return this document to service information pack upon completion of work.
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Page 14: Sequence Of Operation
INSTALLER’S GUIDE Sequence Of Operation FREE COOLING AVAILABLE: NOTE: A (G) signal is required for the economizer to oper- ate. As shipped, the economizer will not operate when there 1st Stage Cooling (Y1) + (O for Heat Pumps and Dual is a signal for Heating Modes utilizing gas heat. - Page 15 INSTALLER’S GUIDE Table 1. Motor Operation Checkout - W7459 Control Only DRIVE MOTOR OPEN DRIVE MOTOR CLOSED SPRING RETURN Power to TR and TR1, jumper T and T1 Disconnect jumper at T or T1 and Disconnect power at TR and TR1 disconnect P or P1, if connected Table 2.
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Page 16: Checkout And Troubleshooting
INSTALLER’S GUIDE CHECKOUT - For Units with a Honeywell W7212 Control CHECKOUT AND TROUBLESHOOTING W7212 Checkout requires a 9V battery, 620 ohm, 1.2K ohm, 5.6K ohm, and 6.8K ohm resistors. Use Table 4 and Fig. 18 for checkout. CAUTION Open Equipment Damage Hazard. - Page 17 INSTALLER’S GUIDE Table 3. Checkout for W7212, W7213, W7214 Economizer Connected to Honeywell Actuator (Cont.) Step Checkout Procedure Proper Response DIFFERENTIAL ENTHALPY Execute stop one, Checkout Preparation. ― Turn DCV MAX to mid position. Place 620 ohm resistor across S and + (white sleeve resistor makes OA enthalpy low).
- Page 18 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 24 volts No voltage Potentiometer on TR1 terminals on Logic Module Logic Module.
- Page 19 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 air opening.
- Page 20 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 applied? Troubleshoot why...
- Page 21 INSTALLER’S GUIDE Troubleshooting - Dampers Open With G Dampers drive to 100% open during a "Continuous Fan" call. (drives beyond minimum position setting) Ensure there is not a call for cooling. Rotate Minimum Position potentiometer fully Measure resistance of Adjust Minimum Does damper green resistor Position to desired...
- Page 22 INSTALLER’S GUIDE Troubleshooting - Mixed Air Sensor Dampers drive to 100% open although the mixed air temp is below 55F. It can be possible for the tip of the MAS to twist near the Remove MAS thermistor which causes the wires from "T"...
- Page 23 INSTALLER’S GUIDE Troubleshooting - Logic Module Failures Logic Module has repeated failures Remove MAS wires from "T" and "T1" terminals on logic module. Measure resistance from either MAS wire to cabinet ground Check other terminals for Replace MAS any continuity? shorting.
- Page 24 About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.com The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.
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