Management Of Dehumidification - Mitsubishi Electric s-MEXT-G00 006 Technical Manual

Computer room air conditioner
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TM_s-MEXT_ME28relC_00_12_19_EN
Moreover, a minimum On time of 3 minutes before switching off will be ensured.
In case of recalling of PAC-IF card step 0 (switch OFF), it will also be necessary to wait a minimum switch off time (maintaining of step 0).
The activation of these time delays will be notified on PGD1 in the following way:
No delay.
Short delay (5 minutes).
Long delay (10 minutes).
Hot/cold mode change (2 minutes)
Minimum OFF time.
In addition to the compliance with the above time scales, the switching on of the PAC-IF card will also be subjected to the consent from the s-Mext unit to carry out the
adjustment (example: Unit ON from keypad/KIPLink), and to the absence of any critical/blocking alarms that would cause the switching off of the s-Mext unit.
ATTENTION
In case of blocking alarm from a PAC-IF card, step 0 is forced until the normal operating conditions are reinstated. This forcing is
necessary in order to reset the alarm, but causes the switching off of all PAC-IF cards.
5.2.1

Management of dehumidification

In order to be able to dehumidify as soon as consent is given by the logic (see the "Activating dehumidification" section in the "Dehumidification chapter), the request is set to
the maximum step.
The flow rate reduction function can be enabled in dehumidification.
If the function is enabled, the fan speed is taken to a fixed value equal to the "Fan Speed when Dehumidif active" speed.
The parameters for enabling the required flow reduction and speed are under "Fan" menu, which can be accessed by entering the "Service" password.
For the default values, see the parameters table.
Technical manual
TRANSLATION OF THE ORIGINAL INSTRUCTIONS
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