Kohler — Procedure to connect an LCM if the combined board is used on the RXT
Installation · Load Control Module (LCM) and combined interface/load management board
From a Kohler service manual — check it applies to your exact model before use.
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Before you start
- Accidental starting. Disconnect the battery cables before working on the generator set.
- Hazardous voltage. Disconnect all power sources before opening the enclosure.
Procedure
- Press OFF on the generator set controller; disconnect utility power to the generator set.
- Disconnect the generator set engine starting battery(ies), negative lead first; disconnect power to the transfer switch.
- Remove the ATS enclosure cover and find the combined interface/load management board.
- Move the P11 jumper from terminals 2 and 3 to terminals 1 and 2 to disable the load management function.
- Connect RBUS communication cable to A, B, PWR, and COM on terminal block P10 on the interface/load management board.
- Connect the LCM RBUS connections to either the combined interface board or the generator's RDC2/DC2 controller.
- Connect the current transformer (CT) to the LCM; do not connect the CT to the combined interface board in the RXT enclosure.
- Connect power relays, HVAC connections, and 120 VAC power to the LCM as described in TT-1574.
- Install the ATS enclosure cover; verify the generator set is OFF.
- Reconnect utility power to the transfer switch; reconnect the starting battery, negative lead last; reconnect utility power to the generator set.
Tools required
- Basic hand tools
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- P11 jumper across pins 1 and 2 disables load management; across 2 and 3 enables
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.