Trane BAYQSTK300B Assembly instructions

BAYQSTK300B
BAYQSTK301B
18-HE76D1-4D-EN
Installer’s Guide
Quick Start Kit
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.
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
WARNING:
General Data
Be sure that the kit you order matches the one required
for your unit model number:
• Use BAYQSTK300B for 4WC** and 4TC** units
(excludes 4TCA, 4WCA and 4YCA).
• Use BAYQSTK301B for 4YC**, 4DC**, 4TCA,
4WCA & 4YCA units.
Identify Kit Contents
The kit consists of the CSR relay and the CS capacitor
assembly mounted on the bracket. Also in the kit are
four (4) screws to mount the bracket in the Control Box
compartment.
Inspect Kit Contents
Check carefully for any shipping damage. This must
be reported to and claims made against the transporta-
tion company immediately. Any missing parts should
be reported to your supplier at once, and replaced with
authorized parts only.
Install Quick Start Kit
1. Remove the Control Box access panel.
2. Mount the start kit assembly components in the
Control Box compartment as illustrated in Figure 1
or Figure 2. Use the mounting screws provided.
Note: In models 4YCA, the orange ignition wire will
need to be removed from the igniter board, to allow
mounting of the start kit assembly. Once mounted,
the orange ignition wire is to be routed through the
hole in the bottom of the start assist box, and then
back up through the units control box base and re-
attached into the ignitor board.
3. Connect the three (3) wires from the start kit to the
Control Box wiring as follows:
• Use the wiring diagram in Figure 3 for Dual capaci-
tor models.
• Use the wiring diagram in Figure 4 for Single
capacitor models.
Also, refer to unit wiring diagram (located on the
backside of the Control Box access panel) for details
of wire connections.
4. Replace the Control Box access panel.
5. Close the unit disconnect.
6. Check the unit for proper operation.
WARNING
!
To prevent injury or death due to electrical shock or
contact with moving parts. Lock unit disconnect switch
in open position before servicing unit.

2 18-HE76D1-4C-EN
Installer's Guide
CS Capacitor CSR Relay
4YC**, 4DC**, 4TCA, 4WCA & 4YCA
Start Kit
Secure with 2
Screws
Through Bracket
and Into Clearance
Holes in Control Box
Secure with 2 Screws
Through Clearance Holes
in Control Box Down Into
Bracket
Start Kit Bracket
Figure 1. 4YC**, 4DC**, 4TCA, 4WCA & 4YCA Install the Start Kit Assembly in the Control Box
CS Capacitor
CSR Relay
4WC**/4TC** (excludes
4TCA, 4WCA & 4YCA) Start Kit
Secure with 2 Screws
Through Bracket and Into
Clearance Holes in Control
Box
Start Kit Bracket
Secure with 2 Screws
Through Clearance Holes
in Control Box Down Into
Bracket
Figure 2. 4WC**/4TC** (excludes 4TCA, 4WCA & 4YCA) Install the Start Kit Assembly in the Control Box

18-HE76D1-4C-EN 3
Installer's Guide
Figure 3. Wiring Diagram for Dual Capacitor Models
Figure 4. Wiring Diagram for Single Capacitor Models

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.
© 2022
18-HE76D1-4D-EN 10 Feb 2022
Supersedes 18-HE76D1-4C-EN (January 2022)