Midea M thermal Mono Series Engineering Data page 57

M thermal Mono
PUMP tab on the DOMESTIC HOT WATER (DHW) menu, if TIMER RUNNING is enabled.
DHW PUMP DI RUN sets wether or not the DHW pump (field supply) operates during the disinfection mode.
7.5 COOL MODE SETTING Menu
MENU > FOR SERVICEMAN > COOL MODE SETTING
2 COOL MODE SETTING
2.1 COOL MODE
2.2 t_T4_FRESH_C
2.3 T4CMAX
2.4 T4CMIN
2.5 dT1SC
ADJUST
In COOL MODE SETTING the following parameters should be set.
COOL MODE enables or disables cooling mode. For installations with space cooling terminals, select YES to enable cooling
mode. For installations without space cooling terminals, select NON to disable cooling mode.
t_T4_FRESH_C sets the refresh time of cooling model climate temperature curve.
T4CMAX sets the ambient temperature above which the heat pump will not
operate in cooling mode. The highest value that T4CMAX can take is 46°C, which is
the cooling mode upper ambient temperature operating limit of the heat pump.
Refer to Figure 3-7.11.
T4CMIN sets the ambient temperature below which the heat pump will not operate
in cooling mode. The lowest value that T4CMIN can take is -5°C, which is the cooling
mode lower ambient temperature operating limit of the heat pump. Refer to Figure 3-7.12.
dT1SC sets the minimum temperature difference between the heat pump leaving
water temperature (T1) and the heat pump leaving water set temperature (T1S)
at which the heat pump provides chilled water to the space cooling terminals.
When T1 – T1S ≥ dT1SC the heat pump provides chilled water to the space
cooling terminals and when T1 ≤ T1S the heat pump does not provide chilled
water to the space cooling terminals.
dTSC sets the temperature difference between the actual room temperature (Ta)
and set room temperature (TS) above which the heat pump provides chilled
water to the space cooling terminals. When Ta – TS ≥ dTSC the heat pump
provides chilled water to the space cooling terminals and when Ta ≤ TS the heat
pump does not provide chilled water to the space cooling terminals. Refer to
Figure 3-7.18. dTSC is only applicable if YES is selected for ROOM TEMP in the TEMP. TYPE SETTING menu. Refer to Part 3,
7.8 "TEMP. TYPE SETTING Menu".
t_INTERVAL_C sets the cooling mode compressor re-start delay. When the compressor stops running, it will not re-start
until at least t_INTERVAL_C minutes have elapsed.
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Figure 3-7.10: COOL MODE SETTING menu
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2 COOL MODE SETTING
YES
2.6 dTSC
2.0HRS
2.7 t_INTERVAL_C
43°C
2.8 T1SetC1
20°C
2.9 T1SetC2
5°C
2.10 T4C1
ADJUST
Midea CAC Confidential
2 COOL MODE SETTING
2/3
2.11 T4C2
2°C
2.12 ZONE1 C-EMISSION
5MIN
2.13 ZONE2 C-EMISSION
10°C
16°C
35°C
ADJUST
Figure 3-7.11: T4CMAX, T4CMIN
Abreviations:
T4: Outdoor ambient temperature
Figure 3-7.12: dT1SC
Abreviations:
T1: Heat pump leaving water temperature
T1S: Heat pump leaving water set temperature
Figure 3-7.13: dTSC
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25°C
FCU
FLH
202005