Thermostat (Dual Set Point); Dual Point Adjustment; Cooling Start Up - Cornelius CH1500 Operator's & Installation Manual

CH1500, CH2000 & CH3000 Chiller Operator's & Installation Manual
T (D
HERMOSTAT UAL

Dual Point Adjustment

1. To set the "SET POINT" for Level 1, press and release the "SET" button, Re1 should be displayed.
2. Press the "SET" button again, the current SET POINT TEMPERATURE should be displayed. Press the UP
or DOWN button to change the SET POINT.
3. To set the "SET POINT" for Level 2, press and release the "SET" button. Re2 should be displayed.
4. Press the "SET" button, the current SET POINT TEMPERATURE should be displayed. Press the UP or
DOWN button to change the SET POINT.
5. Press the fnc button to exit the program.
The thermostat has a range that has been preset at the factory. The range is 40
operation outside of this range is required, please contact the Technical Service Department.
C S U
OOLING TART
Once flow is established and the thermostat is set to the desired set-point, turn the control power switch to "ON"
(press in). All alarm indicators should be extinguished and the Chiller refrigeration system will cycle in order to
maintain the established set-point.
The refrigeration system is furnished with a Hot Gas Bypass system that maintains the set-point within 1
temperature tolerance by cycling the Hot Gas Bypass Solenoid (Compressor, Fan Motor and Circulating pump run
continuously).
Re-check the reservoir level to ensure that it is "FULL" (if so equipped) and add water or proper fluid if necessary.
The chiller is now ready for normal operation.
CONTROL
Publication Number: 621055837OPR
S P )
ET OINT
Figure 6. Eliwel IC 915 Dual Point Thermostat
P
2 & 3 4
COOLING HIGH
POWER PRESSURE
5
6
7
LOW LOW
PRESSURE TEMP.
Figure 7.
- 8 -
o o o o
F (5 C) to 100 F (38 C). If
o
8 & 9
PUMP
POWER
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