Daikin Altherma ERHQ011-014-016BA - Page 67

8 Configuration
Installer reference guide
67
ERHQ+ERLQ011~016 + EHBH/X11+16CB
Daikin Altherma – Low temperature split
4P384974-1 – 2015.01
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)
It is recommended to choose [C‑04] bigger than the default value to
have an optimal operation when choosing possibility 2. 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 indoor unit.
▪ The permission signal for the auxiliary boiler is located
on the EKRP1HB (digital I/O PCB). When it is
activated, the contact X1, X2 is closed and open when
it is deactivated. See illustration below for the
schematic location of this contact.
YC Y1 Y2 Y3 Y4
X1 X2 X3 X4
OFF ON
X2M
SS1
X1M
Bottom plate heater
Applies only to installation with an outdoor unit ERHQ and the option
bottom plate heater kit is installed.
▪ [F-02] Bottom plate heater ON temperature: defines the outdoor
temperature below which the bottom plate heater will be activated
by indoor unit in order to prevent ice build-up in the bottom plate of
the outdoor unit at lower outdoor temperatures.
▪ [F-03] Bottom plate heater hysteresis: defines the temperature
difference between bottom plate heater ON temperature and the
bottom plate heater OFF temperature.
Bottom plate heater
T
A
[F-02]
[F-03]
a
b
T
A
Outdoor temperature
a On
b OFF
CAUTION
The bottom plate heater is controlled via EKRP1HB.
# Code Description
N/A [F-02] Bottom plate heater ON temperature:
3°C~10°C (default: 3°C)
N/A [F-03] Hysteresis: 2°C~5°C (default: 5°C)
INFORMATION
Dependent from setting [F-04] contact Y2 located on digital
I/O PCB (EKRP1HB) controls the option bottom plate
heater. See illustration below for the schematic location of
this contact. For complete upwiring, see "14.6 Wiring
diagram"on page97.
YC Y1 Y2 Y3 Y4
X1 X2 X3 X4
OFF ON
X2M
SS1
X1M