Kohler 10RESV Installation Manual - Page 34

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2.3 Load Management

On models 8RESV, 10RESV, and 12RESV, two optional

load management devices are available for use when

combined with a model RXT and RDT transfer switch:

The optional Load Shed Kit mounts inside a model

RDT or RXT transfer switch. Figure 2-3 shows the

load shed assembly.

The combined interface/load management board is

available for the Model RXT transfer switch.

Note: Load shed kits are not available with the transfer

switch supplied with models 8RESVL, 10RESVL,

12RESVL.

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 relays (or load management

modules) can be connected through normally open

relay contacts on the circuit board.

management modules are available separately.

Load management modules include one power relay

mounted inside a NEMA type 3R enclosure. Connect up

to four (4) load management modules to the load

management devices listed above.

The load management device receives commands from

the RDC2 or DC2 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

Section 2 Accessories

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

TP-6807, Operation/Installation Manual for the Model

RXT transfer switch with combined interface/load

management board.

1. Terminal block TB10

2. Load control circuit board

3. Mounting bracket

Note:

Kit includes current transformer (CT), not shown.

Figure 2-3 Load Shed Assembly GM88281-1

(mounts inside the transfer switch

enclosure)

2.3.1

Power Relay Module

The power relay module kit contains one 50 amp relay

with connecting lugs in a NEMA type 3R enclosure.

Connect up to four (4) power relay modules to the load

management devices listed above.

The power relay modules can be mounted indoors or

outdoors. Two (2) 120 VAC loads (shed simultaneously)

or a single 240 VAC load can be wired to each relay.

Load

For detailed installation and connection instructions,

see TT-1646, provided with the power relay module kit.

Figure 2-4 Power Relay Module

GM88281

TP-6984

5/17a