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Installer's Guide
Down Discharge Economizer and Rain Hood
Model:
BAYECON101AA/AB
BAYECON102AA/AB
BAYRLAY004A
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 pre-
cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
March 2020
Used with:
2/4TC*,WC*,YC*,DC* *018-036
2/4TC*,WC*,YC*, DC* *042-060
(Relay required in WC* Units)
SAFETY WARNING
18-HE39D8-13
Note: "Graphics in this document are for
representation only. Actual model may differ
in appearance."
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Summary of Contents for Trane BAYECON101AA
- Page 1 Installer’s Guide Down Discharge Economizer and Rain Hood Model: Used with: BAYECON101AA/AB 2/4TC*,WC*,YC*,DC* *018-036 BAYECON102AA/AB 2/4TC*,WC*,YC*, DC* *042-060 BAYRLAY004A (Relay required in WC* Units) Note: “Graphics in this document are for representation only. Actual model may differ in appearance.” SAFETY WARNING Only qualified personnel should install and service the equipment.
- 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 and is to remain with this unit. Please return to service information pack upon completion of work.
- Page 3 INSTALLER’S GUIDE Mixed Air Sensor Mixed Air Sensor Economizer Assembly Economizer Assembly Return Air Damper Return Air Damper Flange Screw and Flange Screw and Mist Eliminator Mist Eliminator two (2) Mixed Air two (2) Mixed Air (Filter) (Filter) Sensor Sensor Sheetmetal Screws Sheetmetal Screws (not shown)
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Page 4: Complete Installation
INSTALLER’S GUIDE 4. Install Rain Hood Assembly 6. Route Main Wiring 1. Locate the rainhood assembly, which includes the relief 1. From the Economizer assembly, pass the wire harness damper and the mist eliminator. The back of the hood side through the coil grommet. - Page 5 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 6 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 7 INSTALLER’S GUIDE Economizer Unit Application Models 2/4TC*,WC*,YC*,DC* BAYECON101AA/AB 20.125” *018-036 2/4TC*,WC*,YC*,DC* BAYECON102AA/AB 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 8 INSTALLER’S GUIDE Coil Grommet View ‘A’ 3.) Pull the two (2) Mixed Air Sensor Wires (with female 2.) Continue quick connects) from the 1.) From Economizer- Routing Behind Harness and Route Down Assembly, Pass Wire Compressor Near the Mixed Air Sensor. Harness Through Coil Compartment Connect to sensor...
- Page 9 INSTALLER’S GUIDE Figure 11. TC*/YC* Economizer Connection Diagram 18-HE39D8-13...
- Page 10 INSTALLER’S GUIDE Figure 12. WC* Economizer Connection Diagram 18-HE39D8-13...
- Page 11 INSTALLER’S GUIDE 18-HE39D8-13...
- Page 12 INSTALLER’S GUIDE 18-HE39D8-13...
- Page 13 INSTALLER’S GUIDE 5A. Checkout - For Units with a Honeywell W7459 Control, Only. See 5B for W7212 Operate the motor through its complete open-close stroke. This motor checkout ensures that: If necessary, release one of the previously tightened linkage 1. The motor operates the load. connections to prevent damage.
- Page 14 INSTALLER’S GUIDE Table 2. Enthalpy Checkout Procedure - W7459 Control Checkout Procedure Response 1. Disconnect power at TR and TR1. 2. Disconnect jumper P to P1. 3. Jumper TR to 1. 4. Jumper T1 to T. LED is off. 5. If connected, remove C7400 Solid State Enthalpy Sensor from ter- Motor is in closed position.
- Page 15 INSTALLER’S GUIDE Table 3. Temp vs. OHM Values for MAS (Mixed Air Sensor) Temp vs. OHM 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...
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Page 16: Checkout And Troubleshooting
INSTALLER’S GUIDE 5B. Checkout - For Units with a Honeywell W7212 Control, Only. See 5A for W7459 W7212 CHECKOUT AND TROUBLESHOOTING 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 Equipment Damage Hazard. - Page 17 INSTALLER’S GUIDE Table 4. 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 Honeywell W7459 Only - 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...
- Page 19 INSTALLER’S GUIDE Honeywell W7459 Only - 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 20 INSTALLER’S GUIDE Honeywell W7459 Only - 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.
- Page 21 INSTALLER’S GUIDE Honeywell W7459 Only - 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...
- Page 22 INSTALLER’S GUIDE Honeywell W7459 Only - 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 Honeywell W7459 Only - 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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