Heatcraft Refrigeration Products BEACON II H-IM-79E - Manual (Page 5)

5
Each Beacon II board power is supplied by a transformer in the evaporator on which
it is mounted. Do not run any 24 VAC wires between Beacon II boards on the evaporators.
Configuration
CU
M S
S
S
M = Master Evaporator S = Slave Evaporator CU = Condensing Unit
If there are multiple evaporators on a system, the
program for each SLAVE evaporator must be changed to
identify it as a SLAVE. To do so, press the “
PROGRAM
REVIEW” button repeatedly until “SLA” appears then use
the “ SELECT” knob to select “YES” and press “ENTER”.
All Beacon II boards are shipped with the factory
default as a MASTER evaporator. Place all boards in the
“
SERVICE” mode while you program the setpoints to
avoid errors and alarms which may cause troubles at
startup.
VERY IMPORTANT: This must be done for each slave
board.
Multiple Evaporator Configuration (Master/slave)
Up to 4 evaporators can be connected as a
master/slave configuration.
DO NOT remove the room
sensor from any of the Beacon II boards.
This also applies when connected to the optional Smart
Controller.
PROGRAM
REVIEW
SELECT