4
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Operation
User reference guide
37
ETVH/9W(G) + ETBH/9W
Daikin Altherma 3 H HT F+W
4P586456-1 – 2019.07
▪
During the morning, you consume hot water and the DHW tank temperature
decreases.
▪
At 14:00 the DHW tank is programmed to heat up the water to a preset value
(example:
Eco
=
50°C
). Hot water is available again.
▪
During the afternoon and evening, you consume hot water again and the
DHW tank temperature decreases again.
▪
At 00:00 the next day, the cycle repeats.
4.7.4 Sch reheat mode
In scheduled + reheat mode, the domestic hot water control is the same as in
scheduled mode. However, when the DHW tank temperature drops below a preset
value (=reheat tank temperature – hysteresis value; example: 35°C), the DHW tank
heats up until it reaches the reheat set point (example: 45°C). This ensures that a
minimum amount of hot water is available at all times.
Example:
t
Tt
60°C
00:00
07:00
50°C
45°C
15°C
14:00
21:00
35°C
1
2
4
5
3
T
t
DHW tank temperature
t
Time
4.7.5 To change the domestic hot water temperature
In
Reheat only
mode, you can use the tank temperature setpoint screen to read
out and adjust the domestic hot water temperature.
1
Go to [5]:
Tank
.
Tank
5
2
Adjust the domestic hot water temperature.
+
–
50
°C
5
a
b
Tank
a
Actual domestic hot water temperature
b
Desired domestic hot water temperature
In other modes, you can only view the setpoint screen but not modify it. Instead,
you can modify the settings for the
Comfort setpoint
[5.2],
Eco setpoint
[5.3] and
Reheat setpoint
[5.4].
