Daikin Altherma EDLQ011-016CW1 Installer's Reference Manual page 71

When "bivalent operation" function is enabled, the outdoor unit will
stop automatically with space heating operation when the outdoor
temperature drops below the "bivalent ON temperature", and the
permission signal for the auxiliary boiler becomes active.
When the bivalent operation function is disabled, space heating
operation by the outdoor unit is possible at all outdoor temperatures
(see operation ranges), and the permission signal for the auxiliary
boiler is ALWAYS deactivated.
▪ [C‑03] Bivalent ON temperature: defines the outdoor temperature
below which the permission signal for the auxiliary boiler will be
active (closed, X8M/3+4 on option box EK2CB07CAV3) and
space heating by the outdoor unit will be stopped.
▪ [C‑04] Bivalent hysteresis: defines the temperature difference
between bivalent ON temperature and bivalent OFF temperature.
Permission signal X8M/3+4 (on option box EK2CB07CAV3)
a
[C-04]
b
T
A
[C-03]
T Outdoor temperature
A
a Closed
b Open
# Code
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)
Possibility 2
The installer can set a temperature range ([C‑04]). Depending on the
energy prices, a calculated point T
# Code
[7.4.5.1] N/A What is the high electricity
price?
[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!
When T reaches the T point, then the bivalent heat source
A calc
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. T is ignored.
calc
▪ [C‑04] Operation range between which T
3°C
a
b
T [C-03]+[C-04]
[C-03]
calc
T
A
T Outdoor temperature
A
T Calculated temperature
calc
a Closed
b Open
# Code
N/A [C-03] Range: –25°C~25°C (default: 0°C) (step:
1°C)
EBLQ+EDLQ011~016CAV3+W1 + EK(2)CB07CAV3 +
EKMBUHCA3V3+9W1
Daikin Altherma low temperature monobloc
4P522034-1 – 2018.01
Description
changes between this range.
calc
Description
is calculated.
calc
Description
# Code
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
[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.
X8M
3 4
8 Configuration
Description
Description
Installer reference guide
71