5
|
Operation
User reference guide
32
EBLA04~E23V3 + EDLA04~E23V3
Daikin Altherma 3 M
4P685231-1A – 2023.05
INFORMATION
Risk of space heating capacity shortage for domestic hot water tank without internal
booster heater: In case of frequent domestic hot water operation, frequent and long
space heating/cooling interruption will happen when selecting the following:
Tank
>
Heat up mode
>
Reheat only
.
INFORMATION
When the DHW tank mode is reheat, the risk for capacity shortage and comfort
problem is significant. In case of frequent reheat operation, space heating/cooling
function is regularly interrupted.
5.7.3 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 space 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
).
▪
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.
5.7.4 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:
Summary of Contents for Altherma 3 M EBLA04E V3 Series
Page 66: ......
Page 67: ......
Page 68: ...4P685231 1A 2023 05 Copyright 2022 Daikin Verantwortung f r Energie und Umwelt...
