X
1
X
2
X
3
X
4
closed
[C-04]
open
T
A
NOTE
■
■
■
X2M
0
1
1
2
3
[A] Quiet mode
■
[C-
04] Bivalent hysteresis: defines the temperature difference
This field setting allows to select the desired quiet mode. Two quiet
modes are available: quiet mode A and quiet mode B.
between bivalent ON temperature and bivalent OFF
temperature.
Permission signal X1
–X2 (EKRP1HB)
In quiet mode A, priority is given to the 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
[C-03]
T
A
performance is required. In certain cases, this might result in less
quiet operation of the unit to meet the requested performance.
Outdoor temperature
■
[A-
00] Quiet mode type: defines whether quiet mode A (0) or
CAUTION
quiet mode B (2) is selected.
■
[A-01] Parameter 01: do not change this setting. Leave it set
Make sure to observe all rules mentioned in
application 5 when bivalent operation function is
to its default value.
enabled.
Do not set other values than the ones mentioned.
Daikin shall not be held liable for any damage
resulting from failure to observe this rule.
[C] Setup on EKRP1HB digital I/O PCB
In case the unit is single phase, the combination
Solar priority mode
of setting [4-03]=0/2 with bivalent operation at
low outdoor temperature can result in domestic
■
[C-00] Solar priority mode setting: for information concerning
hot water shortage.
the EKSOLHW solar kit, refer to the installation manual of
The bivalent operation function has no impact on
that kit.
the domestic water heating mode. The domestic
Alarm output logic
hot water is still and only heated by the unit.
■
[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
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.
alarm occurs. This field setting allows for distinction between
detection of an alarm and detection of a power failure to the
unit.
No power supply
OFF ON
[C-01]
Alarm
No alarm
to unit
Closed output
Open output
Open output
SS1
(default)
Open output
Closed output
Open output
Bivalent operation
X1M
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 unit or an
YC Y1 Y2 Y3 Y4
auxiliary boiler.
The field setting "bivalent operation" apply only the unit space
heating operation and the permission signal for the auxiliary boiler.
[D] Benefit kWh rate power supply/Local shift value weather
dependent
When the "bivalent operation" function is enabled, the 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.
Benefit kWh rate power supply
■
[D-
00] Switching off heaters: Defines which heaters are
switched off when the benefit kWh rate signal of the
electricity company is received.
If [D-01]=1 or 2
and the benefit kWh rate signal of the
When the bivalent operation function is disabled, the space heating
electricity company is received, following devices will be
by unit is possible at all outdoor temperatures (see operation ranges)
switched off:
and permission signal for auxiliary boiler is always disactivated.
■
[C-
02] Bivalent operation status: defines whether bivalent
operation is enabled (1) or disabled (0).
[D-00]
0
(default)
Compressor
Forced off
Back up heater
Forced off
Booster heater
Forced off
■
[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
Forced off
Forced off
Forced off
Permitted
Permitted
Forced off
space heating by indoor unit will be stopped.
Forced off
Permitted
Permitted
[D-00] settings 1, 2 and 3 are only meaningful if the
benefit kWh rate power supply is of the type that
power supply is not interrupted,
EDLQ036~054B EBLQ036~054BA6VJU1
Installation manual
Unit for air to water heat pump system
4PW56182-1
33
