8 Configuration
Installer reference guide
69
EKCB
EK2CB EKMBU EKMBUHCA9W1
Daikin Altherma low temperature monobloc
4P405544-1 – 2015.03
#
Code
Description
[7.4.5.2]
N/A
What is the medium electricity
price?
[7.4.5.3]
N/A
What is the low electricity
price?
[7.4.6]
N/A
What is the fuel price?
NOTICE
Do NOT use overview settings!
Depending on the energy prices, this equilibrium point T changes
between a range of [C‑04].
When T
A
reaches the T
eq
point, then the bivalent heat source
permission will be active. To prevent too much switching, there is a
hysteresis of 3°C.
▪ [C‑03] ON temperature. Below this temperature, bivalent will
always be ON. The equilibrium point is ignored.
▪ [C‑04] Operation range between which the equilibrium point is
calculated.
T
A
T
eq
[C-03]+[C-04]
3°C
[C-03]
a
b
T
A
Outdoor temperature
T
eq
Equilibrium temperature
a
Closed
b
Open
#
Code
Description
N/A
[C-03]
Range: –25°C~25°C (default: 0°C) (step:
1°C)
N/A
[C-04]
Range: 2°C~10°C (default: 3°C) (step:
1°C)
To have an optimal operation when choosing possibility 2, it is for
[C‑04] recommended to choose a higher value than the default
value. Depending on the used boiler, the boiler efficiency should be
chosen as follows:
#
Code
Description
[A.6.A]
[7‑05]
▪ 0: Very high
▪ 1: High
▪ 2: Medium
▪ 3: Low
▪ 4: Very low
INFORMATION
Electricity price can only be set when bivalent is ON
([A.2.2.6.1] or [C-02]). These values can only be set in
menu structure [7.4.5.1], [7.4.5.2] and [7.4.5.3]. Do NOT
use overview settings.
INFORMATION
Boiler efficiency [A.6.A] or [7‑05] becomes visible when
bivalent is ON ([A.2.2.6.1] or [C‑02]).
CAUTION
Make sure to observe all rules mentioned in application
guideline 5 when bivalent operation function is enabled.
Daikin shall NOT be held liable for any damage resulting
from failure to observe this rule.
INFORMATION
▪ The combination of setting [4‑03]=0/2 with bivalent
operation at low outdoor temperature can result in
domestic hot water shortage.
▪ The bivalent operation function has no impact on the
domestic water heating mode. The domestic hot water
is still and only heated by the outdoor unit.
▪ The permission signal for the auxiliary boiler is located
on X8M/3+4 of option box EK2CB07CAV3. When it is
activated, contact X8M/3+4 is closed. When it is
deactivated, X8M/3+4 is open. See the illustration
below for the schematic location of this contact.
3 4
X8M
8.3.4
System settings
Priorities
For systems with a domestic hot water tank
#
Code
Description
N/A
[5-02]
Space heating priority.
Defines whether domestic hot water is
made by booster heater only when
outdoor temperature is below space
heating priority temperature. It is
recommended to enable this function to
shorten tank heating operation time
and guaranteed domestic hot water
comfort.
▪ 0: disabled
▪ 1: enabled
[5‑01] Equilibrium temperature and
[5‑03] Space heating priority
temperature are related to backup
heater. So, you must set [5‑03] equal or
a few degrees higher than [5‑01].
N/A
[5-03]
Space heating priority temperature.
Defines the outdoor temperature which
below the domestic hot water will be
heated by booster heater only.
Range: 15°C~35°C (default: 0°C).
N/A
[5-04]
Set point correction for domestic hot
water temperature: set point correction
for the desired domestic hot water
temperature, to be applied at low
outdoor temperature when space
heating priority is enabled. The
corrected (higher) set point will make
sure that the total heat capacity of the
water in the tank remains
approximately unchanged, by
compensating for the colder bottom
water layer of the tank (because the
heat exchanger coil is not operational)
with a warmer top layer.
Range: 0°C~20°C (default: 10°C).
Summary of Contents for EK2CB07CAV3
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