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Setting the temperature setting
1. Press the SET Key - the LCD display will automatically display the current set point.
2. Press Up "<" button to increase temperature or press Down ">"button to decrease temperature to your
desired setpoint. The temperature must be set between 60-85 degrees F.
3. Confirm set temperature by pressing SET button again or waiting for 8 seconds. The current aquarium
temperature will then be displayed when chiller begins to operate in normal mode.
Please Note: The chiller has a built-in protection mode that can delay the cooling mode operation for
up to three (3) minutes.
Sensor Calibration & Temperature differential
The temperature sensor should not normally need to be calibrated, however when using a additional
electronic digital thermometer the sensor can be calibrated to match the thermometer. To calibrate:
1. Press the SET key for 10 seconds, the chiller will automatically go into calibration mode.
2. Default is set at "00", press Up "<" to change the tempe1 F and higher, press Down ">" to
change the temperature -1 F and lower. Therefore if the chiller reads 80 degrees and the calibration
requires it to read 78 degrees, simply go into the calibration mode and depress the Down "<" to -2F.
3. Press SET again and to go into the temperature differential mode. To bypass this mode, simply hit
SET key again.
NOTE: This unit is preset to a temperature differential of 2 degrees F. We DO NOT recommend
changing the differential.
4. If changing the differential is required, simply press the "<" up key to change from 2 degrees F to a
higher set point.
5. Press SET key once the desired differential is reached. The chiller will automatically move into
normal mode operation.
using the integrated heater port
This Prime chiller features a dual stage controller and an outlet located on the back for use with
aquarium heaters. If using an aquarium heater (not included) with this unit, simply plug the heater
into the back of the chiller and the chiller will automatically energize the heater port when the water
temperature reaches 2 degrees F below the set temperature.
Please Note: This port is to be used with aquarium heaters up to 300 watts only. We ONLY recommend
using UL listed aquarium heaters.
Temperature Controller
specifications/Installation
