5
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Operation
User reference guide
22
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680076-1 – 2021.11
If… is displayed
Then the DHW tank mode =…
All items including [5.4]
Reheat
setpoint
are displayed
Sc reheat
5.6.2 Reheat mode
In reheat mode, the DHW tank continuously heats up to the temperature shown
on the home screen (example: 50°C) when the temperature drops below a certain
value.
t
60°C
00:00
07:00
50°C
15°C
40°C
14:00
21:00
1
2
3
4
Tt
T
t
DHW tank temperature
t
Time
INFORMATION
When the Priority Schedule is set to DHW (refer to Priority schedule) and the DHW
tank mode is reheat at same time, the risk for capacity shortage and comfort
problem is significant. In case of frequent reheat operation, Air Conditioning heating/
cooling function is regularly interrupted.
INFORMATION
The application of hysteresis (the amount of the temperature drop that will trigger
the heat up) might vary depending on whether the target temperature is within
operation range of the outdoor unit. Please consult with installer.
5.6.3 Scheduled mode
In scheduled mode, the DHW tank produces hot water corresponding to a
schedule. The best time to allow the tank to produce hot water is at night, because
the Air Conditioning heating demand is lower.
Example:
t
60°C
00:00
07:00
50°C
15°C
40°C
14:00
21:00
1
2
3
4
5
Tt
T
t
DHW tank temperature
t
Time
▪
Initially, the DHW tank temperature is the same as the temperature of the
domestic water entering the DHW tank (example:
15°C
).
▪
At 00:00 the DHW tank is programmed to heat up the water to a preset value
(example:
Comfort
=
60°C
).
