Mitsubishi Electric s-MEXT-G00 006, Техническое руководство

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TM_s-MEXT_ME28relC_00_12_19_EN
Technical manual
TRANSLATION OF THE ORIGINAL INSTRUCTIONS 80
Dehumidification is deactivated if room temperature exceeds the limit set out in the following formula:
𝑈𝑝𝑝𝑒𝑟 𝑙𝑖𝑚𝑖𝑡 = 𝐶𝑜𝑙𝑑 𝑆𝑒𝑡 [𝑃50.01] + (𝐶𝑜𝑙𝑑 𝑑𝑖𝑓𝑓𝑒𝑟𝑒𝑛𝑡𝑖𝑎𝑙 [𝑃20.18] ∗ 2)
The dehumidifier will restore normal operation when the room temperature value falls below the “Cool setting” parameter value .
The Cooling Setting parameter is in the “Set point” menu. The cold setting parameter is under the “Regulations” menu , which can be accessed by entering the “Service”
password .
For the default values, see the parameters table.
7.2.3 Lower limit
There is also an absolute lower limit for dehumidifier operation; it is managed according to a step whose position on the room temperature axis depends on the presence or
absence of resources for post-heating, if any.
If there are no heat sources available (heaters or hot water coil), the lower limit step refers to the cold setpoint, as shown in the following figure.
T
ambient
(°C)
P20.18 Differential
Dehumidify
ON
P50.01
Figure 7-3: Cold only unit dehumidification lower limit graph
If there are heat resources available (heaters), the lower limit step refers to the hot setpoint, as shown in the following figure.
T
ambient
(°C)
P20.19 Differential
Dehumidify
ON
P50.02
Figure 7-4: Lower dehumidification limit graph for units with heat resources
The Hot and Cold setting parameters are under the “Set Point” menu . The Hot and Cold differential parameters are under the “Regulations” menu , which can be
accessed by entering the “Service” password .
For the default values, see the parameters table.
Disabling occurs after 60 seconds (this value cannot be changed) if heating resources are present (if, therefore, post-heating is active), otherwise it is immediate.
Dehumidification continues as normal when the room temperature value rises above the “cold setting” or “hot setting” parameter value.
7.2.4 Combination of the limits
Combined use of the high and low limits is shown in the graph below.
P50.02
T
ambient
(°C)
2 * P20.18 Differential
P50.01
P20.19 Differential
Dehumidify
OFF
Dehumidify
ON
Figure 7-5: Dehumidification temperature limit graph