56
T_INTERVAL_DHW is the start time interval of the
compressor in DHW mode. When the compressor stops
running, the next time the compressor turns on it should
be T_INTERVAL_DHW plus one minute later at least.
T5S is the target temperature for domestic hot water. T5
is the actual temperature of domestic hot water. When
T5 drops to a certain temperature (T5<T5S-dT5_ON) the
heat pump will be available. dT1S5 is the correct value
for the target outlet water temperature (T1S=T5+dT1S5).
T5S
T5
T5S-dT5_ON
Compressor
OFF
ON
OFF
Time
T4DHWMAX is the maximum ambient temperature that
the heat pump can operate at for domestic water
heating. The unit will not operate if the ambient
temperature goes above it in DHW mode.
T4DHWMIN is the minimum ambient temperature that
the heat pump can operate for domestic water heating.
The heat pump will turn off if the ambient temperature
drops below it in water heating mode. The relationship
between operation of the unit and ambient temperature
can be illustrated in the picture below:
The default value of dT1S5 is 10, if surface area
of coil in tank is not large enough, heat pump will
stop even water temperature in the tank is far
below the setpoint, it is suggested that set
dT1S5 to 20. If water temperature probe located
in the bottom of tank, it is possible that long time
is needed to turn on the heat pump, in this
condition please set dT1s5 to 20 and put the
temperature probe to the upper part of the tank.
NOTE
Heat by
TBH or AHS
Heat by
heat pump
T4
OFF
T4DHWMAX
T4DHWMIN
Use ▼ ▲ and ▼▲ to scroll and adjust parameters. Use
BACK to exit.
dT5_ON is the temperature difference for starting the
heat pump, the picture below illustrates the dT5_ON
function.
Go to MENU> FOR SERVICEMAN>DHW MODE
SETTING>1.1 DHW MODE
5°C
10°C
43°C
-10°C
5 MIN
1 DHW MODE SETTING
SCROLL
dT5_ON
dT1S5
T4DHWMAX
T4DHWMIN
t_INTERVAL_DHW
If tank heater (booster heater) is avaliable, Go to FOR
SERVICEMAN >DHW MODE SETTING>1.2 TANK
HEATER and select “Yes”, when “OK” pressed, the
following page will appear:
5°C
20°C
30 MIN
SCROLL
1.2 TANK HEATER
dT5_TBH_OFF
T4_TBH_ON
t_TBH_DELAY
Use
▼
▲
and ▼▲ to scroll and adjust parameters. Use
BACK to exit.
dT5_TBH_OFF is the temperature difference between T5
and T5S that turns the booster heater off. The booster
heater will turn off (T5≥T5S+dT_TBH_OFF) when the
heat pump malfunctions.
T4_TBH_ON is the temperature only when the ambient
temperature is lower than its parameter and the booster
heater will be available. t_TBH_DELAY is the time that
the compressor has run before starting the booster heater
(if T5
<
min (T5S,T5stop)).
The operation of the unit during DHW mode described in
the picture below:
In the picture, T5stop is a parameter related to ambient
temperature, which cannot be changed in the user
interface. When T5≥T5stop, the heat pump will turn off.
COMP.
min(T5S,T5
stop)-dT5_on
t_TBH_delay
TBH
T5stop
T5S
T5
Time
OFF
ON
OFF
ON
OFF
T5S+dT5_
TBH_OFF
The booster heater and backup heater can’t
operate simultaneously, if the booster heater has
been on, the backup heater will be off.
If the booster heater is unavailable (1.2 TANK
HEATER NON is selected), the dT5_ON cannot
be adjusted and is fixed at 4.
NOTE
To enable disinfect function,Go to MENU> FOR
SERVICEMAN> DHW MODE SETTING>1.3 DISIN-
FECT and select “YES”, when “OK” pressed, the
following page will appear.
65°C
30 MIN
120 MIN
SCROLL
1.3 DISINFECT
T5S_DI
t_DI_HIGHTMEP.
t_DI_MAX
V.1
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