Culligan CTM Series Installation, Operation, And Service Instructions With Parts Lists page 36

BASE BOARD
MODEM
BOARD
RF BOARD
RJ11
PHONE
AUXILARY BOARD
ISOLATION
RELAY
SOLENOID
VALVE
Figure 38. Use of isolation relays to allow multiple GBE boards to control a shared solenoid valve.
P/N 01016327 COMMUNICATION CABLE
BASE BOARD
MODEM
BOARD
RF BOARD
RJ11
PHONE
AUXILARY BOARD
Figure 39.
NOTE This configuration, while correct, should be avoided, since any single polarity change will cause imme-
diate failure of GBE boards and/or transformers.
32 Culligan® Culligan Top Mount (CTM) Water Softeners
CORRECT
BASE BOARD
MODEM
BOARD
RF BOARD
RJ11
PHONE
AUXILARY BOARD
ISOLATION
RELAY
NOT RECOMMENDED
BASE BOARD
MODEM
BOARD
RJ11
PHONE
AUXILARY BOARD
Not recommended connections for multiple GBE boards to shared 24VAC.
FOUR INDIVIDUAL TRANSFORMERS
NO NEED TO MATCH POLARITY
MODEM
BOARD
POLARITY IS THE SAME
ON ALL UNITS
RF BOARD
BASE BOARD
RF BOARD
RJ11
PHONE
AUXILARY BOARD
ISOLATION
RELAY
BASE BOARD
MODEM
BOARD
RF BOARD
RJ11
PHONE
AUXILARY BOARD
32 Cat. No. 01029401