Models 3.2 - 13.2, controller
µ
chiller
Blue Box - Page 62
Figure 26
Figure 27
Figure 29
Figure 28
6.2 STARTING THE UNIT
The SIGMA 2002 unit is equipped, as standard, with direct keypad control.
Optionally the unit can be equipped to operate via a remote permissive (e.g. a clock, etc.). The remote interlock
must be connected across terminals 1-2. Enabling the unit to start or stop is only possible via the keypad.
6.2.1 COOLING:
- Press the button as shown in figure 26.
6.2.2 HEATING (operation in heat pump mode):
- Press the button as shown in figure 27.
6.3 STOPPING THE UNIT
6.3.1 Temporary stop
The unit is stopped by pressing the cooling key or, in the case of a heat pump unit operating in winter mode, by
pressing the heating key.
Shutdown of unit operating in summer cooling mode
Shutdown of unit operating in winter heating mode
Warning: do not use the machine main power switch to stop the unit.
The crankcase heaters will be disconnected, resulting in serious risk to
the compressors when the unit is started again.
Summary of Contents for SIGMA 2002
Page 2: ......
Page 99: ...Blue Box 93 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 SIGMA 2002 DC MODELS 3 2 13 2...
Page 100: ...Blue Box 94 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 SIGMA 2002 DC MODELS 14 4 26 4...
Page 101: ...Blue Box 95 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 3 2 8 2 14 4 16 4...
Page 102: ...Blue Box 96 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 9 2 13 2 18 4 26 4...
Page 103: ...Blue Box 97 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE SIGMA 2002 LE DC MODELS 3 2 26 4...
Page 104: ...Blue Box 98 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE HP MODELS 3 2 26 4...
Page 105: ...Blue Box 99 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 3 2 13 2...
Page 106: ...Blue Box 100 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 14 4 26 4...
Page 107: ...Blue Box 101 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 3 2 13 2...
Page 108: ...Blue Box 102 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 14 4 26 4...
Page 109: ...Blue Box 103 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 3 2 13 2...
Page 110: ...Blue Box 104 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 14 4 26 4...
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