Daikin Altherma EHVZ04S18CB, Руководство по установке для специалистов

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8 Configuration
Installer reference guide
52
ERLQ004~008CA + 08S18CB
Daikin Altherma – Low temperature split
4P401676-1D – 2018.07
▪ in reheat mode of scheduled + reheat mode: The guaranteed
minimum tank temperature is set by T
HP OFF
–[6‑08], which is either
[6‑0C] or the weather dependent setpoint, minus the reheat
hysteresis. If the tank temperature drops below this value, the tank
is heated up.
▪ during storage comfort, to prioritize the domestic hot water
preparation. When the tank temperature raises above this value,
domestic hot water preparation and space heating is executed
sequentially.
# Code Description
[7.4.3.3] [6-0C] 30°C~min(50, [6‑0E])°C (default: 45°C)
Reheat hysteresis
Only applicable when domestic hot water preparation is sch
reheat.
# Code Description
N/A [6-08] 2°C~20°C (default: 10°C)
Weather dependent
The weather dependent installer settings define the parameters for
the weather dependent operation of the unit. When weather
dependent operation is active the desired tank temperature is
determined automatically depending on the averaged outdoor
temperature: low outdoor temperatures will result in higher desired
tank temperatures as the cold water tap is colder and vice versa. In
case of scheduled or screheat domestic hot water
preparation, the storage comfort temperature is weather dependent
(according to the weather dependent curve), the storage economic
and reheat temperature are NOT weather dependent. In case of
reheat only domestic hot water preparation, the desired tank
temperature is weather dependent (according to the weather
dependent curve). During weather dependent operation, the end-
user cannot adjust the desired tank temperature on the user
interface.
# Code Description
[A.4.6] N/A Weather dependent desired tank
temperature is:
▪ Fixed (default): disabled. All desired
tank temperature are NOT weather
dependent.
▪ Weather dep.: enabled. In scheduled
or screheat mode, the
storage comfort temperature is
weather dependent. Storage economic
and reheat temperatures are NOT
weather dependent. In reheat mode,
the desired tank temperature is
weather dependent.
Note: When the displayed tank
temperature is weather dependent, it
cannot be adjusted on the user
interface.
# Code Description
[A.4.7] [0-0E]
[0-0D]
[0-0C]
[0-0B]
Weather-dependent curve
T
DHW
T
a
[0-0C]
[0-0B]
[0-0E] [0-0D]
▪ T
DHW
: The desired tank temperature.
▪ T
a
: The (averaged) outdoor ambient
temperature
▪ [0-0E]: low outdoor ambient
temperature: –40°C~5°C (default: –
10°C)
▪ [0-0D]: high outdoor ambient
temperature: 10°C~25°C (default:
15°C)
▪ [0-0C]: desired tank temperature when
the outdoor temperature equals or
drops
below the low ambient
temperature: 45°C~[6‑0E]°C (default:
60°C)
▪ [0-0B]: desired tank temperature when
the outdoor temperature equals or
rises
above the high ambient
temperature: 35°C~[6‑0E]°C (default:
55°C)
Limits on heat pump operation
In domestic hot water operation, following hysteresis values can be
set for the heat pump operation:
# Code Description
N/A [6-00] The temperature difference determining
the heat pump ON temperature.
Range: 2°C~20°C (default: 2°C)
N/A [6-01] The temperature difference determining
the heat pump OFF temperature.
Range: 0°C~10°C (default: 2°C)
Example: setpoint (T
U
)>maximum heat pump temperature–[6‑01]
(T
HP MAX
–[6‑01])
t
T
DHW
T
HP ON
T
HP OFF
T
HP MAX
T
U
= T
BUH OFF
[6-01]
[6-00]
T
U
= 60°C
T
HP MAX
= 50°C
[6-01] = 2°C
[6-00] = 2°C
HP BUH HP
5
10
20
30
40
46
48
50
60
BUH Backup heater
HP Heat pump. If heating up time by the heat pump takes too
long, auxiliary heating by the backup heater can take place
T
BUH OFF
Backup heater OFF temperature (T
U
)
T
HP MAX
Maximum heat pump temperature at sensor in domestic
hot water tank
T
HP OFF
Heat pump OFF temperature (T
HP MAX
−[6-01])