Tco-A Instructions - Trane TSC060 Installation Operation & Maintenance

20
Installation

TCO-A Instructions:

If the unit being installed is listed in the following table and is equipped with the corre-
sponding model number of factory installed electric heater package in the table, the
limit control TCO-A must be replaced with the extra limit control shipped in the heater
compartment. Replace TCO-A following the instructions in steps 1through 4 below.
If the unit being installed does not have a installed electric heater package or is
equipped with a installed electric heater model that does not correspond to any in this
table, skip steps1 through 4 and go on to next step in the installation process.
Unit Electric Heater
Model Number Model Number
TSC072AD, 090AD BAYHTRS427A, 436A
TSC120AD BAYHTRT454A
1. Remove the heater section access panel and open the electric heater dead front
panel.
2. TCO-A is the limit control located in the central part of the heater mounting plate
and that is located on the bottom of the two heater element assemblies. To re-
place this device, first remove the two wires connected to the terminals. Next, re-
move the two screws which secure it to the heater element mounting plate. Once
TCO-A has been removed form the heater element mounting plate, discard this
device.
3. Obtain the replacement TCO-A which is secured by a wire tie near the electric
heater terminal block in the heater compartment . Attach it to the heater element
mounting plate with the two screws that were removed in step 8 above. Connect
the two wires that were un-hooked in step 8 to the terminals on the new TCO-A.
Refer to the heater package wiring diagram to assure that the wiring is connected
properly.
4. Close the electric heater dead front panel and replace heat section access panel.
T_C-IOM-2A