Daikin RHBX04CB [5/12] Operation
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Daikin RHBX04CB [5/12] Operation

Daikin RHBH11CB [5/12] Operation
3 Operation
Operation manual
5
RHBH/X04~16CB
ROTEX HPSU low temperature Bi‑bloc
4P384967-1B – 2017.04
3.3.3 Room thermostat control - Using the
leaving water temperature home pages
INFORMATION
The leaving water is the water that is sent to the heat
emitters. The desired leaving water temperature is set by
your installer in accordance with the heat emitter type.
Example: Underfloor heating is designed for lower leaving
water temperature than radiators and heat pump
convectors and/or fan coil units. You only have to adjust
leaving water temperature settings in case of problems.
For more information about the leaving water temperature, see the
user reference guide.
3.4 Domestic hot water control
3.4.1 Reheat mode
In reheat mode (
),the DHW tank continuously heats up to the
temperature shown on the DHW tank temperature home page
(example: 50°C).
t
60°C
00:00 07:00
50°C
15°C
40°C
14:00 21:00
1
2
3
4
T
t
T
t
DHWtank temperature
t Time
INFORMATION
There is a risk of space heating (cooling) capacity
shortage/comfort problem (in case of frequent domestic hot
water operation, frequent and long space heating/cooling
interruption will happen) when selecting [6‑0D]=0 ([A.4.1]
Domestic hot water Type=Reheat only) in case of a
domestic hot water tank without an internal booster heater.
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.
3.4.2 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
T
t
T
t
DHWtank temperature
t Time
3.4.3 Scheduled + 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
T
t
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
60°C Storage comfort
50°C Storage eco
45°C Reheat
35°C Reheat tank temperature–hysteresis value
3.4.4 Using the DHWtank temperature home
page
Typical DHWtank temperature home pages
Depending on the user profile, the user interface gives you either a
basic or a detailed home page. The examples in the illustrations
below are in DHWtank mode = Scheduled.
User profile = Basic User profile = Detailed
15:20
60°C
Storage comfort
Tank
Mon
15:20
60°C
00:00
Mon
Tue
Tank
Storage comfort
To read out and adjust the desired reheat temperature (in
scheduled and reheat mode)
1 Go to [7.4.3.3]:
> User settings > Preset values > Tank
temperature > Reheat.
Result: You can read out the desired reheat temperature.
2 Press
or to adjust.
To read out and overrule the active or next scheduled desired
temperature (in scheduled mode or scheduled + reheat mode)
1 Go to the DHWtank temperature home page (Tank).
Result:
60°C
is displayed.
2 Press
or to overrule. Note: If the desired temperature is
weather dependent, you cannot change it on the home page.
3.4.5 Using the DHWtank booster mode
To activate the DHWtank booster mode (user profile = Basic)
1 Go to the DHWtank temperature home page (Tank).
2 Press
for more than 5seconds.
To activate the DHWtank booster mode (user profile = Detailed)
1 Go to the DHWtank temperature home page (Tank).
2 Press
to select .

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