Trane TAMXB0A24V21DB Installation, Operation And Maintenance Manual page 33

3. For low voltage entry, drill a 1/2" diameter hole in side of blower
cabinet at location shown on illustration. If needed for additional
accessory wiring, a second hole may be drilled 2" below the first.
Two 3/8" bushings are supplied in the doc pack.
4. Route control wiring to unit and insert low voltage wiring.
Note: After the LV wires have been inserted through the new hole, the
hole must be sealed.
Note: If a side return kit is used, the LV entry must be on the opposite
side of the air handler.
Note: When drilling access through cabinet do not drill into any
internal components. Remove internal components before
drilling through cabinet if possible. Damage to the air handler
or heater could result.
Note: Strain relief must be provided on the inside of the air handler
cabinet for the low voltage wiring. Field supplied thermostat
wires may be either wire tied to the control box or routed
through the adhesive hook supplied in the doc pack.
5. Remove the external sheathing of the wiring approximately 5".
Table 18. Strain Relief for Low-Voltage Wiring Using Adhesive Hook
Communicating Mode
Drilled Hole
Adhesive Hook
Press and stick adhesive hook to front face of blower. Turn
the hook such that it provides strain relief if wire were tugged.
Note: For communicating mode, route the low voltage wiring through
cabinet wall before terminating with included color-coded CAN
connectors. (The CAN connector will not fit through the 1/2"
drilled hole.) Refer to Table 19.
18-GJ89D1-1F-EN
Drilled Hole
Control Board
and Box
Wire Nut
Connectors
J2 CAN
Connector
Harness
Adhesive Hook
Press and stick adhesive hook to front face of blower. Turn
the hook such that it provides strain relief if wire were tugged.
E E l l e e c c t t r r i i c c a a l l — — L L o o w w V V o o l l t t a a g g e e
Drill 1/2"
diameter
hole
15-1/2" 15-1/2"
18"
24V Mode
Drill 1/2"
diameter
hole
18"
Control Board
and Box
J15 24V low
voltage
Harness
33