Tab.11
T = Ambient temperature
Source(s) of energy used
T < T4
Instant boiler
T4 < T < 43 °C
Water temperature < 65°C
Heat pump + instant boiler
Operation in OPT.BACKUP = OFF-PEAK RATE/PEAK RATE
OPTIMISATION MODE
The thermodynamic water heater can only heat the water during:
the programmed timer range,
or when the off-peak rate signal is present.
The thermodynamic water heater can heat the water using the heat pump
or the immersion heater:
the heat pump operates as the priority source,
the immersion heater starts when the heat pump is operating, to enable
the required temperature set point to be reached before the end of the
period.
Tab.12
T = Ambient temperature
Source(s) of energy used
T < –15 °C
Water temperature > variable
temperature set point according
to the outdoor temperature
T > +43 °C
Immersion heater
-15°C < T < 43°C
Heat pump and immersion heater
operate simultaneously if necessa
ry
4.2.3
Limit temperatures of the thermodynamic water heater
The graph opposite shows the maximum temperature at which the outdoor
unit can heat up the water in the domestic hot water tank based on the air
temperature.
X Air temperature (°C)
Y Domestic hot water temperature (°C)
To preserve the components and maintain an optimal service life of the
thermodynamic water heater, the outdoor unit works at temperatures of
between -15 °C and +42 °C. Outside of this temperature range, the
surplus heating of the domestic hot water is provided by the immersion
heater.
Fig.8
MW-4000102-3
40
35
-15
-10 -7
2
32
43
37
X
58
55
60
62
65
Y
-2
4 Description of the product
26
SPC Split
7740321 - v04 - 03122019
