Daikin CHYHBH05AA Installer's Reference Manual page 53

# Code
N/A [8‑0C] Target flow rate during hybrid
operation.
The default value is chosen the same
as the target flow rate during boiler
operation. Decrease this value if the
room temperature is constantly higher
than the desired room temperature.
Increase this value if you feel
discomfort in hybrid operation.
Range: 10~20 l/min
▪ For CHYHBH05: 13 l/min (default)
▪ For CHYHBH08: 15 l/min (default)
The default values have been set to
optimise comfort and performance.
Take care when changing them.
N/A [8‑0D] Target flow rate during gas boiler
operation.
The default value is chosen to deliver
the nominal capacity of the gas boiler
with a ΔT over the emitter of 20°C.
Decrease this value if the room
temperature is constantly higher than
the desired room temperature. Increase
this value if you feel discomfort in gas
boiler only operation.
10~20 l/min (default: 16 l/min)
The default value has been set to
optimise comfort and performance.
Take care when changing them.
Leaving water temperature: Modulation
Modulation lowers or raises the desired leaving water temperature in
function of the desired room temperature and the difference between
this temperature and the actual room temperature. This results in:
▪ stable room temperatures
temperature (high comfort level),
▪ less On/OFF cycles (low noise level, high comfort and efficiency
levels)
▪ as low as possible leaving water temperatures (high efficiency).
This function is only applicable in case of room thermostat control
and is used to calculate the leaving water temperature. After
activation, the leaving water temperature can only be read on the
user interface, but not changed. Turn OFF modulation to change it.
The leaving water temperature can either be a fixed setpoint, or an
offset in case of weather-dependent setpoint.
# Code
[A.3.1.1.5] [8‑05] Modulated LWT:
▪ No: disabled.
Note: The desired leaving water
temperature needs to be set on the
user interface.
▪ Yes (default): enabled.
Note: The desired leaving water
temperature can only be read out on
the user interface
N/A [8-06] Leaving water temperature maximum
modulation:
0°C~10°C (default: 5°C)
Requires modulation to be enabled.
This is the value by which the desired
leaving water temperature is increased
or lowered.
CHYHBH05+08AA + EHYKOMB33A
Daikin hybrid for multi heat pump – heat pump module
4P471761-1A – 2017.10
Description
exactly matching the desired
Description
INFORMATION
When leaving water temperature modulation is enabled,
the weather‑dependent curve needs to be set to a higher
position than [8-06] plus the minimum leaving water
temperature setpoint required to reach a stable condition
on the comfort setpoint for the room. To increase
efficiency, modulation can lower the leaving water setpoint.
By setting the weather‑dependent curve to a higher
position, it cannot drop below the minimum setpoint. Refer
to the illustration below.
T t
+[8-06]
−[8-06]
a Weather-dependent curve
b Minimum leaving water temperature setpoint required to
reach a stable condition on the comfort setpoint for the
room.
Leaving water temperature: Emitter type
Only applicable in case of room thermostat control. Depending on
the system water volume and the heat emitters type, the heat up of a
space can take longer. This setting can compensate for a slow or a
quick heating system during the heat up cycle.
Note: The setting of the emitter type will influence the maximum
modulation of the desired leaving water temperature and the
possibility for usage of the automatic heating changeover based on
the indoor ambient temperature.
Therefore it is important to set this correctly.
# Code
[A.3.1.1.7] [9‑0B] Emitter type:
Reaction time of the system:
▪ Quick
water volume, fan coils, or radiators.
▪ Slow Example: Large water volume,
floor heating loops.
Quick heat up function
Only applicable in case of room thermostat control. The function will
start up the gas boiler when the actual room temperature is 3°C
lower than the desired room temperature. The large boiler capacity
can boost up the room temperature quickly to the desired
temperature. This can be useful after a long period of absence or
after a break-down of the system. During the quick heat up function,
the setpoint of the gas boiler will be the maximum heating setpoint:
[9‑00].
# Code
N/A [C‑0A] Indoor quick heat up function
▪ 0: OFF.
▪ 1 (default): On.
Domestic hot water control
Only applicable in case an optional domestic hot water tank is
installed.
This is always applicable for Switzerland.
Configuring the desired tank temperature
The domestic hot water can be prepared in 3 different ways. They
differ from each other by the way the desired tank temperature is set
and how the unit acts upon it.
8 Configuration
a
b
T a
Description
(default) Example: Small
Description
Installer reference guide
53