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Pump Connection
L This controller does not
provide mains power to
drive a pump–a pump
must be driven via an
external relay and contactor
(pump start) setup
L The controller provides
a low voltage signal that
actuates the relay which in
turn enables the contactor
and finally the pump
Although the controller has
permanent memory and
thus a default program
will not cause erroneous
valve actuation, it is
good practice to connect
unused zones on the unit
back to the last used zone
This in effect, inhibits
the chances of the
pump ever running
against a closed head
L In some circumstances
not all operational zones
may be hooked up–for
example, your KRX8 is
capable of running 8
zones but there were
only 4 field wires and
solenoid valves available
for connection
This situation can pose a
risk to a pump when the
system test routine for
the controller is initiated
Inputs/Outputs
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