Daikin EKHBH054BA Manuel D'installation page 34

Unité intérieure pour système de pompe à chaleur air-eau
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[A] Quiet mode
This field setting allows to select the desired quiet mode. Two quiet
modes are available: quiet mode A and quiet mode B.
In quiet mode A, priority is given to the outdoor unit operating quietly
under all circumstances. Fan and compressor speed (and thus
performance) will be limited to a certain percentage of the speed at
normal operation. In certain cases, this might result in reduced
performance.
In quiet mode B, quiet operation might be overridden when higher
performance is required. In certain cases, this might result in less
quiet operation of the outdoor unit to meet the requested
performance.
[A-00] Quiet mode type: defines whether quiet mode A (0) or
quiet mode B (2) is selected.
[A-01] Parameter 01: do not change this setting. Leave it set
to its default value.
NOTE
Do not set other values than the ones mentioned.
[C] Setup on EKRP1HB digital I/O PCB
Solar priority mode
[C-00] Solar priority mode setting: for information concerning
the EKSOLHW solar kit, refer to the installation manual of
that kit.
Alarm output logic
[C-01] Alarm output logic: defines the logic of the alarm
output on the EKRP1HB digital I/O PCB.
[C-01]=0, the alarm output will be powered when an alarm
occurs (default).
[C-01]=1, the alarm output will not be powered when an
alarm occurs. This field setting allows for distinction between
detection of an alarm and detection of a power failure to the
unit.
[C-01]
Alarm
0
Closed output
(default)
1
Open output
Bivalent operation
Applies only to installations with an auxiliary boiler (alternating
operation, parallel connected). The purpose of this function is to
determine —based on the outdoor temperature— which heating
source can/will provide the space heating, either the Daikin indoor
unit or an auxiliary boiler.
The field setting "bivalent operation" apply only the indoor unit space
heating operation and the permission signal for the auxiliary boiler.
When the "bivalent operation" function is enabled, the indoor unit will
stop automatically in space heating operation when the outdoor
temperature drops below "bivalent ON temperature" and the
permission signal for the auxiliary boiler becomes active.
When the bivalent operation function is disabled, the space heating
by indoor unit is possible at all outdoor temperatures (see operation
ranges) and permission signal for auxiliary boiler is always
disactivated.
[C-02] Bivalent operation status: defines whether bivalent
operation is enabled (1) or disabled (0).
[C-03] Bivalent ON temperature: defines the outdoor
temperature below which the permission signal for the
auxiliary boiler will be active (closed, KCR on EKRP1HB) and
space heating by indoor unit will be stopped.
Installation manual
32
No power supply
No alarm
to unit
Open output
Open output
Closed output
Open output
[C-04] Bivalent hysteresis: defines the temperature difference
between bivalent ON temperature and bivalent OFF
temperature.
Permission signal X1–X2 (EKRP1HB)
closed
[C-04]
open
[C-03]
T
Outdoor temperature
A
CAUTION
Make sure to observe all rules mentioned in
application 5 when bivalent operation function is
enabled.
Daikin shall not be held liable for any damage
resulting from failure to observe this rule.
In case the outdoor unit is single phase, 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 disactivated. See figure for
the schematic location of this contact.
X2M
YC Y1 Y2 Y3 Y4
Indoor unit for air to water heat pump system
T
A
OFF ON
SS1
X1M
EKHBH/X054BA
4PW54216-1

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