Load Management - Kohler 48RCLC Installation Manual

6.5 Load Management

Two optional load management devices are available for use with single-phase generator sets and a model RXT or RDT transfer
switch.
•
The optional Load Shed Kit mounts inside a model RDT or RXT transfer switch. Figure 33 shows the load shed
assembly.
•
The combined interface/ load management board is available for the Model RXT transfer switch.
The devices provide an automatic load management system to comply with Section 702.5 of NEC 2008.
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 management device automatically manages up to six residential loads.
•
Two relays are included to control two independent heating, ventilation, and air conditioning (HVAC) loads.
•
Up to four power relay modules can be connected through normally open relay contacts on the circuit board. Power
relay modules are available separately. See Power Relay Module section.
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.
Note:
Connect only non-essential loads to the load shed kit.
An adequate electrical supply is required for operation of the customer-supplied power relays connected to the load shed kit.
Check the electrical requirements of the customer-provided equipment prior to installation to determine the wire size and circuit
protection required. The installer is responsible for ensuring that the power system installation complies with all applicable state
and local codes.
For detailed installation and connection instructions, see TT-1609, 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 33 Load Shed Assembly GM88281-1 (mounts inside the transfer switch enclosure)
TP-7203 4/23
Terminal block TB10
Load control circuit board
GM88281
51