Daikin Altherma EHBH08DA6V7 - Page 176

8 | Configuration
Installer reference guide
176
ERGA04~08DAV3(A) + EHBH/X04+08DA*V7
Daikin Altherma 3 R W
4P618958-1 – 2020.03
T
A
[C-03]
[C-04]
a
b
T
A
Outdoor temperature
[C-03] Bivalent ON temperature (fixed)
a Auxiliary boiler active
b Auxiliary boiler inactive
Possibility 2: Based on the outdoor temperature and energy prices
The installer can set a temperature range [C‑04]. Depending on the energy prices, a
calculated point T
calc
varies within a range between [C‑03] and [C‑03]+[C‑04]. It is
recommended to choose [C‑04] bigger than the default value to have an optimal
operation when choosing possibility 2.
Electricity and gas prices
# Code Description
[7.5.1] N/A Electricity price > High
[7.5.2] N/A Electricity price > Medium
[7.5.3] N/A Electricity price > Low
[7.6] N/A Gas price
INFORMATION
Electricity price can only be set when bivalent is ON ([9.C.1] or [C-02]). These values
can only be set in menu structure [7.5.1], [7.5.2] and [7.5.3]. Do NOT use overview
settings.
When the outdoor temperature reaches below the T
calc
point, then the permission
signal for the auxiliary boiler becomes active. To prevent too much switching, there
is a hysteresis of 3°C.
# Code Description
[9.C.3] [C-03] Bivalent ON temperature: Below this
temperature bivalent operation will always be
ON.
[9.C.4] [C-04] Operation range between which T
calc
is calculated.
Permission signal X1–X2 (EKRP1HBAA)
T
A
T
calc
[C-03]+[C-04]
3°C
[C-03]
a
b
T
A
Outdoor temperature
T
calc
Bivalent ON temperature (variable). Below this temperature, the auxiliary boiler will always be ON. T
calc
can
never go below [C‑03] or above [C‑03]+[C‑04].
a Auxiliary boiler active
b Auxiliary boiler inactive
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.