Daikin EWAQ006BAVP Installer's Reference Manual page 53

# Code
[7.7.1.2] [1-06] << continuation
[1-07] ▪ [1-06]:
temperature.
[1‑08]
20°C)
[1-09]
▪ [1-07]:
temperature.
35°C)
▪ [1-08]:
temperature
temperature equals or drops below
the low ambient temperature.
Between minimum and maximum
leaving
[9‑03]°C~[9‑02]°C (default: 22°C).
Note: This value should be higher
than [1-09] as for low outdoor
temperatures
suffices.
▪ [1-09]:
temperature
temperature equals or rises above
the high ambient temperature.
Between minimum and maximum
leaving
[9‑03]°C~[9‑02]°C (default: 18°C).
Note: This value should be lower
than [1-08] as for high outdoor
temperatures
required.
Leaving water temperature: Delta T source
Temperature difference for entering and leaving water. The unit is
designed to support under floor loops operation. The recommended
leaving water temperature (set by the user interface) for under floor
loops is 35°C. In such case, the unit will be controlled to realize a
temperature difference of 5°C which means that the entering water
to the unit is around 30°C. Depending on the installed application
(radiators, under floor loops) or situation, it can be possible to
change the difference between entering and leaving water
temperature. Note that the pump will regulate its flow to keep the Δt.
# Code
[A.3.1.3.1] [9-09] Heating: required temperature
difference between entering and
leaving water.
In case a minimum temperature
difference is required for the good
operation of the heat emitters in heating
mode.
Range: 3°C~10°C (in steps of: 1°C;
default value: 5°C)
[A.3.1.3.2] [9-0A] Cooling: required temperature
difference between entering and
leaving water.
In case a minimum temperature
difference is required for the good
operation of the heat emitters in cooling
mode.
Range: 3°C~10°C (in steps of: 1°C;
default value: 5°C)
Leaving water temperature: Modulation
Only applicable in case of room thermostat control. When using the
room thermostat functionality, the customer needs to set the desired
room temperature. The unit will supply hot water to the heat emitters
and the room will be heated. Additionally, also the desired leaving
water temperature must be configured: when turning on the
EWAQ+EWYQ006+008BAVP + EK(2)CB07CAV3 +
EKMBUHCA3V3+9W1
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492901-1 – 2017.06
Description
Low outdoor ambient
10°C~25°C (default:
High outdoor ambient
25°C~43°C (default:
Desired leaving water
when the outdoor
water temperature
less cold water
Desired leaving water
when the outdoor
water temperature
colder water is
Description
modulation, the desired leaving water temperature will be calculated
automatically by the unit (based on the preset temperatures, if
weather-dependent is selected, modulation will be done based on
the desired weather-dependent temperatures); when turning off the
modulation, you can set the desired leaving water temperature on
the user interface. Moreover, with the modulation turned on, the
desired leaving water temperature is lowered or raised in function of
the desired room temperature and the difference between the actual
and the desired room temperature. This results in:
▪ stable room temperatures
temperature (higher comfort level)
▪ less On/OFF cycles (lower noise level, higher comfort and higher
efficiency)
▪ water temperatures as low as possible to match the desired
temperature (higher efficiency)
# Code
[A.3.1.1.5] [8-05] Modulated LWT:
▪ 0 (No): disabled.
Note: The desired leaving water
temperature needs to be set on the
user interface.
▪ 1
leaving
calculated according to the difference
between the desired and the actual
room temperature. This creates a
better match between the capacity of
the heat pump and the actual
required capacity, and results in less
start/stop
economic operation.
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: 3°C)
Requires modulation to be enabled.
This is the value by which the desired
leaving water temperature is increased
or lowered.
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.
8 Configuration
exactly matching the desired
Description
(Yes)(default): enabled. The
water temperature
cycles and a more
a
b
T a
Installer reference guide
53
is