Scheduled Reheat Mode - Daikin ETSH12P50EF User Reference Manual

5 | Operation

5.7.3 Scheduled reheat mode

User reference guide
32
T t
60°C
50°C
40°C
15°C
00:00
T Storage tank temperature
t
t Time
INFORMATION
Risk of space heating capacity shortage: In case of frequent tank operation, frequent
and long space heating/cooling interruption will happen when selecting the
following:
Tank > Heat up mode > Reheat only.
In scheduled reheat mode the storage tank set temperature varies according to the
schedule. When the tank temperature drops below the set temperature minus the
heat pump ON hysteresis temperature [6-00], the tank heats up to the reheat
temperature.
Example:
T t
60°C
50°C
40°C
15°C
00:00
T Storage tank temperature
t
t Time
▪ At 14:00 the DHW schedule is programmed to heat up the tank to 60°C.
▪ At 21:00 the DHW schedule is programmed to heat up the tank to 50°C. This
value is valid until 14:00 the next day.
▪ With the higher set temperature, in the afternoon and evening more hot water is
available.
▪ During the morning, you consume hot water and the storage tank temperature
decreases.
▪ When the tank temperature drops below a preset value (=set temperature –
hysteresis value; example 40°C), the tank is heated up to 50°C.
▪ During the afternoon and evening, you consume hot water again and the DHW
tank temperature decreases again.
▪ When the tank temperature drops below a preset value (=set temperature –
hysteresis value; example 50°C), the tank is heated up to 60°C.
1 3
2 4
07:00 14:00 21:00
3
4
1
5
2
07:00 14:00 21:00
t
6
t
ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663480-1A – 2022.07