EDM SYSHP MINI DCI
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Abbreviaons:
T5: DHW tank water temperature
T5S: DHW set temperature
T5stop: DHW mode leaving water temperature operang limit
TBH: Immersion heater in DHW tank
Figure 3-7.5 illustrates the operaon of the heat pump and
immersion heater in DHW mode. If the DHW tank water
temperature (T5) is less than the minimum of the DHW set
temperature (T5S) and the heat pump leaving water temperature
operang limit (T5stop) (refer to Figure 2-6.3 in Part 2, 6
“Operang Limits”) less dT5_ON (refer to Part 3, 7.4.2 “DHW
MODE Menu”), the heat pump starts providing heated water to
the DHW tank. Aer t_TBH_delay (refer to Part 3, 7.4.3 “TANK
HEATER Menu”) minutes have elapsed, the immersion heater
is turned on. If T5 reaches T5stop, the heat pump stops but the
immersion heater connues running unl T5 has reached T5S +
dT5_TBH_OFF (refer to Part 3, 7.4.3 “TANK HEATER Menu”).
Figure 3-7.5: DHW mode operaon
7.4.2 DHW MODE MENU
MENU > FOR SERVICEMAN > DHW MODE SETTING > DHW MODE
To enter the DHM MODE menu, navigate to the DHW MODE SETTING menu, scroll to
YES on the DHW MODE line and press OK.
dT5_ON sets the temperature dierence between the DHW set temperature (T5S) and
the DHW tank water temperature (T5) above which the heat pump providing heated
water to the DHW tank. When T5S - T5 ≥ dT5_ON the heat pump providing heated water
to the DHW tank.
If NON is selected for TANK HEATER on the DHW MODE
SETTING menu, dT5_ON cannot be adjusted and is xed at 4°C.
Note: When the heat pump’s leaving water temperature is
above the DHW mode leaving water temperature operang
limit (T5stop), the heat pump does not provide heated water
to the DHW tank. The DHW mode leaving water temperature
operang limit is related to ambient temperature as shown in
Figure 2-6.3 in Part 2, 6 “Operang Limits”.
Figure 3-7.7: dT5_ON
Figure 3-7.6: DHW MODE menu
Abbreviaons:
T5: DHW tank water temperature
T5S: DHW set temperature
T5stop: DHW mode leaving water temperature operang limit
dT1S5 sets the heat pump’s leaving water set temperature (T1S) relave to DHW tank water temperature (T5). For DHW mode,
the user sets the DHW set temperature (T5S) on the main screen and cannot manually set T1S. T1S is set as T1S = T5 + dT1S5.
Compressor
t_TBH_delay
Time
Compressor
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