Multiple Evaporator Configuration - Heatcraft Refrigeration Products BEACON II H-IM-79E Installation And Operation Manual

Multiple Evaporator Configuration (Master/slave)
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" then press
"ENTER". All Beacon II boards are shipped with the
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.
CU
M = Master Evaporator
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.
6
Configuration
PROGRAM
REVIEW
M
S = Slave Evaporator
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.
This also applies when connected to the optional Smart
Controller.
S
S
SELECT
S
CU = Condensing Unit