Kohler KBC, Operation And Installation

Page: 39 / 80

TP-6835 9/17 39 Section 4 Communication and Accessory Connections
Alarm Board DIP Switches
There are four DIP switches on the alarm module board.
Some of the switches are not used. See Figure 4-19. To
enable the preferred source selection, set DIP switch 1
to ON. If the supervised transfer switch is installed on
the ATS, set DIP switch 2 to ON.
DIP Switch Function
1 Preferred source selection
2 Supervised transfer enable
3 Not used
4 Not used
Figure 4-19 Alarm Board DIP Switches
Preferred Source Selection
The alarm module is required for preferred source
selection. To enable the preferred source selection, set
DIP switch 1 to ON. Then see the controller operation
manual for instructions to select Source N or Source E
as the preferred source.
External Alarm
A customer-supplied external alarm horn can be
connected to the alarm module at terminal block TB14.
Connect to the normally open or normally closed contact
as recommended by the alarm manufacturer’s
instructions. See Figure 4-20.
Item Specification
Wire Size #12-22 AWG Cu
Contact Voltage Rating
500 mA @ 120 VAC
250 mA @ 240 VAC
Figure 4-20 External Alarm Connection
Specifications
Audible Alarm Setup
The alarm board is equipped with a 90 dB audible alarm.
The audible alarm can be set to sound under selected
fault conditions. Use the Common Alarms Setup menu
to assign functions to the audible alarm. See the
controller operation manual for instructions to set
Audible Alarm: Y for each function that should trigger the
alarm.
Alarm Operation, Normal Mode
In Normal Mode, the horn sounds anytime a fault event
happens in the system. The horn continues to sound
unless the alarm silence button is pressed. When the
fault is cleared, the alarm silence is ended and reset for
the next alarm.
Alarm Operation, Chicago Alarm Mode
Chicago Alarm mode requires the horn to sound and a
lamp or LED to light when the switch is in the emergency
(non-preferred) position. The horn continues to sound
unless the alarm silence button is pressed. When the
fault is cleared, the alarm silence is ended and reset for
the next alarm.
For Chicago Alarm Mode, use the Common Alarm
Setup menu to assign the necessary faults and
conditions to the audible alarm. See the controller
operation manual for instructions to assign common
faults. Be sure to assign the Contactor in Standby
condition to trigger the audible alarm.
A remote alarm or indicator light can also be connected
to the alarm board to indicate the alarm condition, as
described previously. See External Alarm.