Trane Precedent FIAEHTB309 Series Installation Instructions Manual page 11

4. Once the post is removed, there is now clear access to the
heat compartment for installation of the FIA electric heater
kit.
5. Before installing the heater(s) into the unit, complete the
following steps:
a. Identify the top of each heater element by using the
airflow direction label on the terminal plate. When
oriented correctly, the airflow arrow will point down.
Refer to the Table 3
overall kit kW.
Table 3. Heater identification
Total Heater kW Heater 1 kW
18 kW
36 kW
54 kW
72 kW
b. If the heater is a dual heater – adjoin the two heaters
end to end with the provided screws in eight locations
– four screws on each side. Heater 1 has the faceplate
installed.
Note: For W/G*J150-300: Heater 1 has 140°F/180°F limits
and Heater 2 has 150°F/180°F limits installed.
Figure 10. Dual heater connection
SCREWS
c. For a dual heater, install the ring bushing into the
faceplate.
For a single heater, install the plastic cap.
Dual Heaters Only:
i. To install the wire chase, place the wire harness next
to the heaters that were just assembled. The wire
chase is in two pieces.
ii. Route the Heater 2 wires through the bushing and
run the wires to Heater 2. Heater 2 wires are labeled
2A or 2B.
iii. Install the other plastic ring bushing in the wire
chase hole so it is installed from the inside out to
allow access to the wire tie.
ACC-SVN228B-EN
for heater identification based on
Heater 2 kW
18 N/A
18 18
36 18
36 36
Figure 11. Rear wire chase connection
SCREW
6. Attach the two piece wire chase together using two screws
Figure 12. Wire chase assembly
7. Attach the wire chase to the heater assembly.Verify the
wire harness is inside the wire chase and not trapped
between the chase and heater side channels. This step will
require:
• Two screws to the terminal plate.
• One screw in the center on the bottom of the wire
chase.
• One screw on the back heater.
Figure 13. Wire chase connection
SCREW
8. Connect the wire harness to the correct terminals on
Heater 2 (reference the wiring schematic on the hinged
door inside the kit), and cinch the wire tie on the back wire
chase. Verify the wires are not trapped between the heater
assembly and the wire chase and cinch the front wire tie at
the front bushing.
Installation
SCREWS
SCREWS
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