Kohler 12RES

TP-6967 2/21 23Section 1 Installation
1.10 Accessories
Have accessories installed by a Kohler authorized
distributor/ dealer or a licensed electrician. Follow the
installation instructions provided with each kit. Use
separate conduit for AC and DC leads to reduce the
possibility of electrical interference. Verify that the leads
and conduit do not interfere with the operation of the
generator set or obstruct the service areas. Verify that
the electrical installation complies with the National
Electrical Code (NEC) and all applicable local codes.
See Section 2, Wiring Diagrams, for more information
regarding generator set electrical connections.
If there are no accessories, proceed to Section 1.11,
Prestart Installation Check.
1.10.1 Common Fault and Auxiliary Run
Relay Board
The optional relay board provides two additional relays
to control customer-provided equipment:
 Common fault relay, energized on a fault.
 Auxiliary run relay, energized when the generator set
is running.
See Figure 1-22 for the relay board location.
1. Relay board location (inside customer connection box)
1
ADV-7948
Figure 1-22 Optional Relay Board Location
Connect customer equipment to terminal strip TB1 on
the relay board, following the markings on the board.
Connect to each relay’s normally open or normally
closed contacts depending on the application. Use size
14 AWG maximum wire for connections to TB1. See
Figure 1-23 and Figure 1-24.
GM51403
1
1. Connect customer equipment to TB1, 14 AWG max.
Figure 1-23 Relay Board Connections
Terminal Label Description
COMMON FAULT NC Common fault relay normally
closed contact.
Opens on a fault.
COMMON FAULT COM Common fault relay common
COMMON FAULT NO Common fault relay normally
open contact.
Closes on a fault.
AUX RUN NC Auxiliary run relay normally
closed contact.
Open when generator set is
running.
AUX RUN COM Auxiliary run relay common
AUX RUN NO Auxiliary run relay normally
open contact.
Closed when generator set is
running.
Note: Use maximum 14 AWG wire for TB1 connections.
Figure 1-24 Common Fault and Run Relay Board
Harness Connections