Trane BAYRLAY004A, BAYECON201A, BAYECON200A Installer's Manual
18-HE39D9-6
Installer’s Guide
Horizontal Economizer & Rain Hood
Model:
BAYECON200A
BAYECON201A
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 inserts into the
return air stream and is connected to the unit low voltage
supply through wire leads. The economizer is fully accessible through an access panel.
Important: The Economizer installation requires that you first
install an air filter rack ordered separately. Use:
BAYFLTR101A for 2/4YC*, WC*, TC*, DC* *018-3036A
BAYFLTR201A for 2/4YC*, WC*, TC*, DC* *042-3060A.
When the economizer is installed in WC* models, relay
accessory kit BAYRLAY004A is required. Refer to the drawing
on page 6 to make your relay wiring connections in the Control
Box.
Identify Economizer Kit Contents
Refer to Figure 2 on page 3 to identify the kit contents.
Inspect Contents
You must report damage and make claims to the transportation company immediately. Report missing parts to your
supplier immediately and replace with authorized parts
only.
!
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.
!
SAFETY HAZARD
DO NOT REMOVE END COVERS FROM ECONOMIZER ACTUATOR; THE SPRING-RETURN ASSEMBLY MAY RELEASE
AND CAUSE PERSONAL INJURY.
Used with:
2/4TC*,WC*,YC*,DC* *018-036A
2/4TC*,WC*,YC*,DC* *042-060A
(Required with WC* models)
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
Install Economizer Kit
1. Remove the unit economizer/filter access panel, the
evaporator coil and blower access panel, and the electri
cal control box access panel, see Figure 1 on page 2.
2. Filter frame must be installed prior to economizer installa-
tion.
3. Apply two gaskets to horizontal economizer mounting
flanges. See Figure 2 on page 3.
4a. Small Cabinet - BAYECON200A
(TC*,WC*,YC*,DC* *018A to 3036A)
Set the horizontal economizer over the horizontal return
air opening on the unit. The notches in the bottom
flange of the economizer clear the two existing screws
below the return air opening of the unit.
4b. Medium Cabinet Only - - BAYECON201A
(TC*,WC*,YC*,DC* *042A to 3060A)
Apply a gasket to the economizer and slide the top
flange of the economizer under the lip between the top
and bottom sections of the unit. Mate the notches on
WARNING
WARNING
the top flange of the economizer with the existing screws
between the top and bottom sections of the unit. The
notches on the bottom flange of the economizer clear
the two existing screws below the return air opening of
the unit.
CAUTION
!
Use care when inserting the economizer in the return air
compartment, to prevent damaging the foil faced insulation.
INSTALLER’S GUIDE
5. Drill three (3) 9/64” holes through the mating holes in
the top flange of economizer and into the unit. Then,
drive three (3) #10 sheet metal screws to secure the top.
6. Drill three (3) 9/64” engagement holes on each side of the
economizer. Then, drive three (3) #10 sheet metal screws
into each side of the economizer to the unit.
7.
Mount the Mixed Air sensor to the left Blower partition
using two sheetmetal screw. See Figure 4, page 4. The 2 yellow
wires will connect to the Economizer wiring harness in a later step.
Install any economizer options (enthalpy sensor or CO2 sensor)
at this time per instructions provided with the sensor.
8. Apply a gasket to the Rain Hood flanges. See Figure 2.
9. Place the Rain Hood over the horizontal return air opening
of the economizer. See Figure 2. Use the #10 sheet metal
screws provided to attach the hood to the economizer.
10.
Route the main wiring harness. From the Economizer assembly,
route the main wiring harness to the Mixed Air sensor and to the
Control Box. See Figure 3.
11. Connect the two (2) Mixed Air Sensor wires (pulled from harness)
to the mating pigtail wires (with Stake-Ons) from the Mixed Air
Sensor.
12. In the Control Box, complete the wiring connections per the wiring
diagram on page 5. Secure all wires with wire ties so that there
is no interference with any moving parts in the unit.
IMPORTANT - When the economizer is installed in heat
pump models (WC*), a relay accessory kit
(BAYRLAY004A) is required. Mount relay accessory kit
in unit control box as illustrated on page 6.
13. Attach the return duct to the economizer.
14. Power the economizer and run the checkout procedure on page
7. Make desired adjustments to the controller: set the minimum
occupied damper position, set the outside air (if enthalpy used),
and the IAQ sensor (if used).
15. Replace the unit Coil access panel, the Blower access panel, and the
Control Box access panel.
Top Sealing
Flange
Horizontal
Return Air
Panel
Down Flow
Return Air
Panel
TC, WC, or
YC Unit
Coil Access
Panel
Control Box Access
Panel
Blower Access Panel
Page 2
Figure 1. Remove Panels
Horizontal Economizer Assembly
Economizer A B C D E
BAYECON200AA 22" 20" 16-7/8" 15-11/16 11-11/16
BAYECON201AA 26" 22-21/32" 19" 17-11/16 14-11/16
INSTALLER’S GUIDE
NOTE: BAYECON200A economizer only contains two clearance notches in the top flange.
1.) From
EconomizerAssembly,
Pass Wire Harness
Through Coil Grommet. See View A.
Economizer
A
B
C
Duct
D
E
Figure 2. Apply Two Gaskets to Mounting Flanges
2.) Continue Routing
Behind Compressor
Compartment and into
Blower Compartment.
4.) Continue Routing the
Remaining Harness
Through the Grommet
and into the Control Box.
Gaskets (2)
Rain Hood
Location of
Mixed Air Sensor
3.) Pull the 2 Mixed Air Sensor
Wires (with Stake-Ons) from the
Harness and Route Down Near
the Mixed Air Sensor.
Figure 3. Main Wire Harness Routing
Page 3
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