Trane UHMB060ACV3VB Installer's Manual page 31

41F - 24 VAC Mode Indoor Unit with 24 VAC Comfort Control and 24VAC 2-Stage or 2-Step Heat Pump
41G - Humidistat Hookup - 24 V Mode ONLY
HUMIDISTAT HOOKUP - 24 V ONLY
If an optional humidistat for humidity control in cooling
is used, the factory installed "BK Jumper" must be cut.
The BK Jumper must also be cut if a multi-zone
BK Jumper
The factory installed jumper between "R"
and "BK" on the circuit board must be
cut if an optional humidistat is installed.
controller is connected to *CONT402 is installed and
using the BK enabled feature.
See the 24VAC field wiring diagrams for mor
information.
18-CD30D1-12
Installer's Guide
31