Load Management Devices - Kohler 26RCA Installation Manual

5.5 Load Management Devices

Two optional load management devices are available for use with single-phase generator sets and a model RXT or RDT transfer
switch:
1. The optional Load Shed Kit mounts inside a Model RDT or RXT transfer switch. Figure 44 shows the load shed
assembly.
2. The combined interface/ load management board is available for the Model RXT transfer switch.
The devices provide an automatic load management system designed to comply with applicable NEC requirements (ref. article
702 for Optional Standby Systems). The installer is responsible for ensuring that the power system installation complies with all
applicable state and local codes.
Note:
The load management devices are only compatible with single-phase generator sets.
With a load management system, less critical appliances can be powered by the generator set when the more important
appliances are not running, allowing the use of a smaller generator set than would be needed to run all of the building's electrical
equipment at the same time.
The load shed kit or combined interface/ load management board can be used to automatically manage up to six residential
loads:
1. Up to four normally closed power relays can be connected through normally open relay contacts on the circuit board.
See the load shed kit installation instructions for relay specifications. Kohler
2. Two relays are included on the load management device to control two independent heating, ventilation, and air
conditioning (HVAC) loads.
Note:
Connect only non-essential loads to the load shed kit.
The load management device receives commands from the RDC2 generator controller and energizes or de-energizes the
appropriate load relays to add or shed non-critical loads according to their priority.
An adequate electrical supply is required for operation of the power relays connected to the load shed kit. Check the electrical
requirements of the connected equipment prior to installation to determine the wire size and circuit protection required. Verify
that customer-provided equipment complies with applicable local and national electrical codes.
For detailed installation and connection instructions, see the installation instructions provided with the load shed kit or the
Operation/Installation Manual for the Model RXT transfer switch.
Mounting bracket
Note:
Kit includes current transformer (CT), not shown.
Figure 44 Load Shed Assembly GM88281-1 (mounts inside the transfer switch enclosure)
52
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Power Relay Modules are recommended.
Terminal block TB10
Load control circuit board
GM88281
TP-7091 4/23