DESCRIPTION OF OPERATING MODES (ITEM 1 OF THE INFORMATION MENU)
MODE # MODE NAME | DESCRIPTION | |
7 | Delay at | The delay at |
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| The delay is configured in the User1 configuration menu. |
8 | 2nd cooling setpoint active | The second cooling setpoint is active. See section 5.7.1 |
9 | Setpoint reset active | In this mode, the unit uses the reset function to adjust the leaving or entering water temperature setpoint. See |
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| section 5.7.2. |
10 | Demand limit active | In this mode, the capacity at which the unit is allowed to operate is limited. See section 5.8. |
11 | Ramp loading active | Ramp loading is active. In this mode, the controlled high or low water temperature value (in °C/min) in heating mode |
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| is limited to a preset value in order to prevent compressor overload. The ramp function must be configured (see |
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| User1 configuration menu). The ramp values can be modified (see setpoint menu). |
12 | Low entering water temperature | The unit is in heating mode and the temperature of the evaporator leaving water is lower than the lesser of the two |
| protection in heating mode | cooling setpoints. A capacity stage is removed. This mode only applies to heat pumps. |
13,14 | Low suction temperature protection | 13 = circuit A & 14 = circuit B. Protection for evaporator suction low temperature circuit is active. In this mode, circuit |
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| capacity is not authorised to rise if the unit is in cooling mode, and saturated suction temperature in the circuit is |
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| lower by more than 13°C at the leaving chilled water and lower than the frost protection threshold. |
15,16 | Low discharge superheat protection | 15 = circuit A & 16 = circuit B. |
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| In this mode the circuit capacity is shut down by pumpout and not allowed to restart, when the low superheat alarm |
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| conditions are satisfied. During the |
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| alarms 48 and 49. |
17,18 | High pressure protection | 17 = circuit A & 18 = circuit B. The circuit is in high pressure protection mode because the HP protection threshold |
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| has been exceeded. The circuit capacity is not authorised to rise and any slave compressor can be stopped in order |
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| to prevent a high pressure break. |
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19,20 | Not used |
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21 | Heat reclaim active | Circuit A or circuit B operates in heat reclaim mode and not in standard cooling mode (pumpdown phase is |
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| activated). |
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22 | Evaporator heater active | Mode active if risk of frost exists. |
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23 | Evaporator pump reversal active | Two evaporator water pumps installed on the unit and pump reversal is active. See section 5.3 |
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24 | Periodic evaporator pump | The unit is shut down and is started every day at 14:00 hours for 2 seconds. This function must be configured in the |
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| User1 menu. See sections 5.3 and 4.5.7.3. |
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25 | Low | Unit capacity is limited. The period when this mode starts, as well as the limited capacity in |
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| controlled in Client1 menu. |
26 | Unit under SM control | Unit is under control of a System Manager (FSM or CSM III). |
27 | Master/slave link active | Unit is connected to a secondary unit by a master slave link and either: |
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| - the unit is configured as a master and this master is operating, or |
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| - the unit is configured as a slave and this slave is operating. |
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4.5.2 - Description of the Temperatures menu
TEMPERATURES MENU [2]
ITEM | FORMAT UNITS | COMMENTS | |
0 | ±nn.n | °C | Evaporator entering water temperature |
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1 | ±nn.n | °C | Evaporator leaving water temperature |
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2[1] | ±nn.n | °C | Condenser entering water temperature |
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3[1] | ±nn.n | °C | Condenser leaving water temperature |
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4[1] | ±nn.n | °C | Reclaim condenser entering water temperature |
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5[1] | ±nn.n | °C | Reclaim condenser leaving water temperature |
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6 | ±nn.n | °C | Saturated discharge temperature circuit A |
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7 | ±nn.n | °C | Saturated suction temperature circuit A |
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8 | ±nn.n | °C | Suction temperature compressor A1 |
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9 | ±nn.n | °C | Superheat circuit A |
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10[1] | ±nn.n | °C | Saturated discharge temperature circuit B |
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11[1] | ±nn.n | °C | Saturated suction temperature circuit B |
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12[1] | ±nn.n | °C | Suction temperature compressor B1 |
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13[1] | ±nn.n | °C | Superheat circuit B |
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14[1] | ±nn.n | °C | Outdoor temperature |
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15[1] | ±nn.n | °C | Water loop temperature, master/slave assembly |
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Legend
1This item is displayed in certain unit configurations only
2Access to this menu is
4.5.3 - Description of the Pressures menu
PRESSURES MENU [2]
ITEM | FORMAT | UNITS | COMMENTS |
0 | nnnn | kPa | Discharge pressure circuit A |
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1 | nnnn | kPa | Suction pressure circuit A |
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2 | nnnn | kPa | Differential oil pressure compressor A1 |
3 | nnnn | kPa | Discharge pressure circuit B |
4 | nnnn | kPa | Suction pressure circuit B |
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5 | nnnn | kPa | Differential oil pressure compressor B1 |
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6[1] | nnnn | kPa | Differential oil pressure compressor A2 |
7[1] | nnnn | kPa | Differential oil pressure compressor A3 |
8[1] | nnnn | kPa | Differential oil pressure compressor A4 |
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9[1] | nnnn | kPa | Differential oil pressure compressor B2 |
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10[1] | nnnn | kPa | Differential oil pressure compressor B3 |
11[1] | nnnn | kPa | Differential oil pressure compressor B4 |
12[1] | nnnn | kPa | Pumpdown pressure, heat reclaim, circuit A |
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13[1] | nnnn | kPa | Pumpdown pressure, heat reclaim, circuit B |
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Legend
1This item is displayed in certain unit configurations only.
2Access to this menu is
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