Koolance CTR-SPD1224M User Manual
1
CAUTION: Improperly connecting the speed controller can damage it, the
pump, or the power supply. Ensure that total device load does not exceed the
!
maximum rating of the controller (36W@12VDC, 50W@24VDC). Ensure that
the connected device will safely accept the voltage being supplied (12V or 24V
depending on the jumper setting).
CTR-SPD1224M Installation Guide v 1.0
The Koolance CTR-SPD1224M uses voltage control
to throttle speeds for 12VDC pumps or fans. With a
jumper setting, it will also step-up and throttle voltage for 24VDC devices. CTR-SPD1224M requires
a 12VDC input.
2
For pumps with larger Molex connectors,
use the larger (2-wire, 4 position) connector
on the wiring harness.
Connect the 3-pin plug from the wiring harness to the controller.
Pump
Wiring Harness
Do not operate components at voltages which exceed
their specifications. Running a 12V-max pump at 24V
from the speed controller can damage the pump.
T o avoid damaging the speed controller , do not connect devices which exceed the controller’s maximum
power rating (36W@12V , 50W@24V).
Connect One
to Pump
Connect to
Controller
Use the wiring harness included with
your speed controller. This will accept
the pump or fan connection.
Wiring Harness
For 3-pin pumps or fans, connect this to the
available plug on the wiring harness.
Power In
(12VDC)
Power Out
(Pump, Fan, etc.)
3-pin Pump
or Fan
Wiring Harness
Finally, connect the power supply to the
controller.
Pump tachometer signals are not used by the speed
controller. If your pump has an integrated speed knob,
it should be left on the maximum setting when adjusting
Pumps with built-in control
should be left on maximum
speed
Voltage Jumper
speed via the Koolance controller.
CTR-SPD1224M has a jumper to select from 12V
(max) or 24V (max) speed control.
!
Power Supply
CAUTION: Do not power 12V pumps or
other devices with the 24V setting! This
can permanently damage the attached
device.
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