DeDietrich MIT-M /E Installation, User And Service Manual page 79

Tab.99
Phase Operating description
1 Domestic hot water production only. When switching on, if domestic hot water production is authorised
and acceleration of domestic hot water production is not required, DHW management ((DP051) config­
ured as ECO (Only HP)), a domestic hot water production cycle is started up for a maximum duration
that can be adjusted and fixed by the Max. DHW duration(DP047) parameter.
In the event of insufficient heating comfort, the heat pump is running too long in domestic hot water
mode: reduce the maximum duration of domestic hot water production.
2 Heating only. Production of domestic hot water is off. Even if the domestic hot water set point is not
reached, a minimum heating period is forced. This period can be adjusted and defined with the Min. CH
before DHW parameter (DP048). After the heating period, tank loading is again enabled.
3 Domestic hot water production only. When the domestic hot water set point is reached, a period in heat­
ing mode begins.
4 Heating only. When the Hysteresis DHW(DP120) differential is reached, domestic hot water production
is triggered.
If there is not enough domestic hot water (e.g. if the domestic hot water does not heat up quickly
enough): reduce the trip differential (hysteresis) by modifying the value of the Hysteresis DHW parame­
ter (DP120). The DHW tank will then heat up the water more quickly.
5 Domestic hot water production only.
Tab.100 Configuration of the domestic hot water
Access
DHW tank > Parameters, counters,
signalsParameters >
Tab.101 Configuration of the duration
Access
DHW tank > Parameters, counters,
signalsParameters >
Tab.102 Temperatures
Access
DHW tank > Parameters, counters,
signalsSignals >
7756241 - v02 - 19062020
Parameter
DHW management (DP051)
DHW comfort setpoint (DP070)
Hysteresis DHW (DP120)
DHW reduced setpoint (DP080)
Parameter
Max. DHW duration (DP047)
Min. CH before DHW (DP048)
Signal
DHW tank temp bottom (DM001)
DHW tank temp top (DM006)
Description
ECO mode: use of the heat pump only.
Comfort mode: use of the heat pump
and backup energy sources
Comfort temperature setpoint from the
Domestic Hot Water tank
Hysteresis temperature relative to the
DHW temperature setpoint
Reduced temperature setpoint from the
Domestic Hot Water tank
Description
Maximum duration of the domestic hot
water production
Minimum heating duration between two
periods of domestic hot water production
Description
Domestic Hot Water tank temperature
(bottom sensor)
Domestic Hot Water tank temperature
(top sensor)
MIT-M
7 Settings
79