Daikin EHFZ03S18DJ3V, Руководство по установке для специалистов, Страница: 125 / 212

10 | Configuration
Installer reference guide
125
ERLA EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1B – 2021.10
# Code Description
[A.3.1.3.1] [1-0B] Delta T for heating
Range: 3°C~10°C
[A.3.1.3.2] [1-0D] Delta T for cooling
Range: 3°C~10°C
Leaving water temperature: Modulation
To allow better matching of the heat pump capacity with the actual required
capacity, enable the leaving water temperature modulation. If modulation is
enabled, the unit calculates the leaving water temperature according to the
difference between desired and actual room temperature. As a result, the
heat pump will have less start/stop cycles and thus operate more economical.
If modulation is enabled, you can also set the maximum modulation of the leaving
water temperature. The maximum modulation is the value by which the desired
leaving water temperature is increased or lowered.
# Code Description
[A.3.1.1.5] [8-05] Modulated LWT :
▪ 0 ( No ): Disabled
▪ 1 ( Yes ): Enabled
N/A [8-06] Maximum modulation:
Range: 0°C~10°C
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. See the illustration below.
a
+[8-06]
−[8-06]
b
Ta
Tt
a Weather-dependent curve
b Minimum leaving water temperature setpoint required to reach a stable condition
on the comfort setpoint for the room.
T
t
Target leaving water temperature
T
a
Outdoor temperature
Leaving water temperature: Emitter type
Heating up or cooling down the main zone can take longer. This depends on:
▪ The water volume of the system
▪ The heater emitter type of the main zone