Mitsubishi Electric Evolution+ s-MEXT Technical Manual page 5

4 ......... TEMPERATURE ADJUSTMENT CONSIDERATIONS ............................................................................................. 133
4.1 .... MANAGEMENT OF THE LIMITS OF THE COOLING SETPOINT ...................................................................................................................... 133
4.2 .... TEMPERATURE PROBES MANAGEMENT ........................................................................................................................................................ 134
4.2.1 .... Configuration of the installed probes ............................................................................................................................................................. 134
4.2.2 .... Type of temperature calculation .................................................................................................................................................................... 135
4.2.3 .... Selection of the adjustment temperature ...................................................................................................................................................... 135
4.3 .... SETPOINT OFFSET .............................................................................................................................................................................................. 136
5 ......... COOLING .................................................................................................................................................................. 138
5.1 .... COOLING IN S-MEXT UNITS ............................................................................................................................................................................... 138
5.1.1 Communication with the Mr Slim unit ............................................................................................................................................................ 138
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5.1.2 .... Connection to only one external Mr Slim unit ................................................................................................................................................ 138
5.1.3 Connection to more than one external Mr Slim unit ...................................................................................................................................... 138
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5.1.4 .... Cold request generation ................................................................................................................................................................................ 139
5.1.5 .... Lack of voltage .............................................................................................................................................................................................. 141
5.1.6 .... Management of dehumidification .................................................................................................................................................................. 141
5.2 .... MINIMUM DELIVERY TEMPERATURE LIMIT ..................................................................................................................................................... 142
5.2.1 .... Objectives ............................................................................................................................................................................................... 142
5.2.2 .... Adjustment logic ............................................................................................................................................................................................ 142
6 ......... HEATING ................................................................................................................................................................... 143
6.1 .... HEATING RESOURCES ....................................................................................................................................................................................... 143
6.2 .... ON/OFF HEATING ELEMENT MANAGEMENT .................................................................................................................................................. 143
6.3 .... POST-VENTILATION FUNCTION FOR THE ELECTRIC HEATERS .................................................................................................................. 144
7 ......... ADJUSTMENT WITH TEMPERATURE PROVIDED BY THE SUPERVISOR .......................................................... 145
8 ......... DEHUMIDIFICATION ................................................................................................................................................. 146
8.1 .... DEHUMIDIFICATION START-UP ......................................................................................................................................................................... 146
8.2 .... DEHUMIDIFICATION LIMITS ............................................................................................................................................................................... 146
8.2.1 General considerations ................................................................................................................................................................................. 146
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8.2.2 .... Upper limit ............................................................................................................................................................................................... 147
8.2.3 Lower limit ............................................................................................................................................................................................... 148
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8.2.4 .... Combination of the limits ............................................................................................................................................................................... 149
8.2.5 Low dehumidification temperature limit ......................................................................................................................................................... 149
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8.2.6 .... Timed dehumidification function .................................................................................................................................................................... 149
8.2.7 Post - heating 150
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8.3 .... DEHUMIDIFICATION SETPOINT LIMIT .............................................................................................................................................................. 151
9 ......... HUMIDIFICATION...................................................................................................................................................... 153
9.1 .... INTRODUCTION ................................................................................................................................................................................................... 153
9.2 .... INTEGRATED HUMIDIFIER ................................................................................................................................................................................. 153
9.2.1 Operating principle ........................................................................................................................................................................................ 153
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9.2.2 .... Vapour production regulation ........................................................................................................................................................................ 154
9.2.3 Initial pre-wash of the lines and the cylinder ................................................................................................................................................. 154
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9.2.4 .... Reset cylinder hour counter .......................................................................................................................................................................... 154
9.2.5 Dilution drain ............................................................................................................................................................................................... 154
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9.2.6 .... Periodic drain ............................................................................................................................................................................................... 155
9.2.7 Drain due to inactivity .................................................................................................................................................................................... 155
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9.2.8 .... Alarm management ....................................................................................................................................................................................... 156
9.2.9 .... Maintenance of the integrated dehumidifier .................................................................................................................................................. 156
10 ....... TEMPERATURE AND HUMIDITY MEASUREMENT ................................................................................................ 157
10.1 .. RETURN AIR T+H PROBE ................................................................................................................................................................................... 157
10.2 DELIVERY AIR T+H PROBE ................................................................................................................................................................................ 157
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10.3 .. REMOTE T+H PROBES ....................................................................................................................................................................................... 157
10.4 EXTERNAL T+H PROBE ...................................................................................................................................................................................... 158
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11 ....... INTERNAL AIR FAN MANAGEMENT....................................................................................................................... 158
11.1 .. INTRODUCTION ................................................................................................................................................................................................... 158
11.2 STANDARD OPERATION .................................................................................................................................................................................... 158
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11.3 .. MODULATION OPERATION ................................................................................................................................................................................ 158
11.4 ECONOMY FUNCTION ......................................................................................................................................................................................... 158
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11.5 .. AUTOMATIC SPEED REGULATION FUNCTION ............................................................................................................................................... 159
11.5.1 Constant flow rate regulation ......................................................................................................................................................................... 159
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11.5.2 .. Constant residual ∆P regulation ................................................................................................................................................................... 161
11.5.3 Calibrating the constant flow function............................................................................................................................................................ 163
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11.5.4 .. Operation data display .................................................................................................................................................................................. 163
11.6 .. COMMAND FROM SUPERVISOR ....................................................................................................................................................................... 164
11.7 .. MANAGEMENT OF INTERNAL FAN ALARMS .................................................................................................................................................. 164
11.8 FAN ADJUSTMENT BASED ON TEMPERATURE (FORMER FAN SPECIAL FUNCTION 02) ........................................................................ 165
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11.8.1 .. Fan adjustment based on return temperature ............................................................................................................................................... 165
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