Current 2601 - Manual (Page 6)

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1. Press the SET key once to access the Fahrenheit/Celsius mode. Press the UP or DOWN arrow to
modify the setting.
2. Press the SET key again to access the set point. The LCD displays the set point and S1 will be
blinking on and off indicating it is in the set point mode. Press the UP or DOWN arrow to modify
the set point.
3. Press the SET key again to access the differential. The LCD will display the differential and DIF1
will be blinking on and off indicating it is in the differential mode. Press the UP or DOWN arrow
to modify the differential. Two degrees (2° F/C) is the optimum setting.
4. Press the SET key again to access the cooling or heating mode. The LCD will display either C1
for cooling or H1 for heating. Press the UP or DOWN arrow to change between C1 and H1. To
operate a chiller thermostat must be set to C1. To operate a heater, thermostat must be set to H1.
The factory setting is C1.
Proceed to #5 for Dual Thermostats or press the SET key again to view current temperature
and resume the normal operating mode.
5. Press the SET key again to access the heater set point. The LCD displays the set point and S2 will
be blinking on and off indicating it is in the heat set point mode. Press the UP or DOWN arrow
to modify the set point.
6. Press the SET key again to access the heat stage differential. The LCD will display the differential
and DIF2 will be blinking on and off indicating it is in the differential mode. Press the UP or
DOWN arrow to modify the differential. Two degrees (2° F/C) is the optimum setting.
7. Press the SET key again to access the cooling or heating mode. The LCD will display either C2 for
cooling or H2 for heating. The LCD will display either C2 for cooling or H2 for heating. Press the
UP or DOWN arrow to change between C2 and H2. This mode should be set to H2. This means
stage 2 is for the heater.
8. If your heater has a built-in thermostat it must be turned up above the heat set point on the LCD
thermostat. Example: if you have set the heater set point on the LCD thermostat to 76°F, you
must turn the thermostat on the heater to at least 78°F. The LCD thermostat will now control the
chiller and the heater.
Programming
Temperature Controller