Trane BAY24X042, Installation Instructions Manual

Page: 8 / 24

8 ACC-SVN67M-EN
Installation
1. Remove heater compartment access panel and unit
control box access panel. See Figure 2 .
Note: On downflow units with or without duct work
installed or horizontal units without ductwork
installed, remove horizontal supply cover from the
rear of the heater compartment.
2. Remove insulation to expose perimeter of removable
panel in the vestibule panel. See Figure 2 .
3. Clip or cut the retaining tabs around the perimeter of the
removable panel.
4. Remove the panel.
5. Check the opening in the vestibule panel. Remove any
metal burrs or slivers that could damage or pinch the
heater elements resulting in a short circuit when elements
are installed in the opening.
Note: Locator tabs on the vestibule panel support the
electric heat assembly and secure the inward edge
of the electric heat accessory control panel. Slits in
the insulation should allow the tabs to protrude
through the insulation and be visible. However, it
may be necessary to work the insulation back from
the tabs and slightly bend the tabs outward if
difficulty is encountered engaging the electric
heater panel or the electric heat accessory control
panel. See
Figure 3 .
6. The electric heater element assembly has “BOTTOM”
stamped in the mounting panel to identify the proper
position for mounting.
7. Refer to Table 2 . If the unit/heater combination being
installed is the same as any in this table and the
application is for horizontal airflow , the limit control
TCO-A must be replaced with the extra limit control
shipped with the heater. Replace TCO-A following the
instructions in
Step 8 and Step 9 . If the unit/heater
combination being installed does not correspond to any in
this table or if the application is for downflow airflow, skip
steps 8 and 9 and go on to
Step 10 .
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with a CAT III or IV voltmeter rated per
NFPA 70E that all capacitors have discharged.
WARNING
Fire Hazard!
On BAYHTRA, BAYHTRB, BAYHTRD, BAYHTRU, and
BAYHTRW heater kits, failure to allow a one inch
clearance from the supply ductwork to any combustible
materials could cause the combustible materials to
catch on fire which could result in death, serious injury,
or property damage.
Figure 2. Control covers and access panels
Horizontal
Supply
Cover
Control
Box
Access
Panel
Removable
Insulation
Removable
Panel
Heat
Section
Access
Panel
Figure 3. Electric heater element panel