Culligan Smart Controller HE DF 12 Installation, Operation, And Service Instructions With Parts Lists page 34

Connecting Multiple Circuit Boards to 24VAC Power Supplies
In progressive flow systems, each GBE circuit board requires electrical power. Because the GBE circuit boards are
electrically connected to each other via the communication cable, it is very important to use care in properly wiring these
systems to electrical power. Failure to do so can result in, at a minimum, damaging the GBE circuit boards. Culligan
STRONGLY RECOMMENDS that every GBE circuit board be provided with its own individual power transformer as
shown in Figure 37.
When using individual power supplies, the GBE boards can be connected to each other using communication cables
without paying attention to the polarity of the wiring used on the power supplies. DO NOT connect the Aux Outputs of mul-
tiple GBE boards to the same electrical load (for example, a "load" can be the coils of a relay or a solenoid valve). If you
need the Aux Outputs of multiple GBE boards to run the same load; it is required that you use isolation relays as shown in
Figure 38.
P/N 01016327
COMMUNICATION CABLE
BASE BOARD
MODEM
BOARD
RF BOARD
RJ11
PHONE
AUXILARY BOARD
Figure 37.
Culligan® High Efficiency 1.5 Water Filter
30
CORRECT
MODEM
BOARD
RJ11
PHONE
AUXILARY BOARD
Correct connections for multiple GBE boards to individual 24VAC power supplies.
THREE INDIVIDUAL TRANSFORMERS
NO NEED TO MATCH POLARITY
BASE BOARD
RF BOARD
BASE BOARD
MODEM
BOARD
RF BOARD
RJ11
PHONE
AUXILARY BOARD
Cat. No. 01024514
30