28 Culligan® High Efficiency 1.5 Twin Water Softener
28 Cat. No. 01024821
Auxiliary Outputs (P/N 01020748)
The auxiliary board (Figure 34) comes in the parts pack of the HE 1.5” Twin’s secondary valve. It has four 24 VAC outputs
for driving 24VAC control valve motors, energizing 24VAC relay coils, or 24VAC solenoids directly. Each solid state triac
output is capable of handling up to 4 Amps maximum; HOWEVER, the 24VAC transformer determines how much total
current is available. Max supply current of the 01014897 transformer is only 2.1 Amps, so the sum of all loads on the triac
outputs should never exceed the maximum that the transformer can supply. The Auxiliary Outputs (see Figure 35) can
be programmed to be “normally off” (output stays OFF until the designated time, it is needed to be ON) or “normally on”
(output stays ON until the designated time, it is needed to be turned OFF).
Figure 34. Auxiliary outputs.
Auxiliary Outputs
Auxiliary Input
Figure 35. Auxiliary board input and outputs.
Aux Output 1 is used to power the 24 VAC drive motor found on all valves. When Aux Output 1 is used for this, then Aux
Output 4 is automatically configured to operate a solenoid which can be used for a standby or blocking. Aux Output 4 is
powered during all cycles except service, and unpowered during service.
For example, Figure 36 shows how the timing would work if an auxiliary output is set to NORMALLY OFF. The cycle posi-
tion is set to BACKWASH, the delay minutes setting is greater than zero, and ON minutes is greater than zero.
Delay Minutes
On Minutes
Service Backwash Brine Draw
Service Backwash Brine Draw
ON SECONDS
@ 1500 gallons, on seconds is activated by GALLONS
@ 3000 gallons, on seconds is activated by GALLONS
@ 4500 gallons, on seconds is activated by OFF MINUTES
OFF MINUTES
EXAMPLE
GALLONS: 1500
ON SECONDS: 10
OFF MINUTES: 15
Figure 36. Auxiliary board activation timing.
Refer to GBE Programming for Commercial Softeners and Filters (except for HFxN) Manual (P/N 01027295) for program-
ming information. This manual can be obtained from your local dealer, CPort (www.cport.culligan.com) under the Techni-
cal Service Tab or on the Service Tech App.
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