Installer reference guide
57
08 + ERLQ004~008
Daikin Altherma - Low Temperature Split
4P313774-1 – 2012.05
8 Configuration
Booster heater and heat pump operation
For systems with separate domestic hot water tank (only for
EHBH/X
)
Timers
#
Code
Description
N/A
[4-03]
Defines the operation permission of the
booster heater depending on ambient,
domestic hot water temperature or
operation mode of heat pump. This
setting is only applicable in reheat mode
for applications with separate domestic
hot water tank.
Q
0: Booster heater operation is NOT
allowed except for "Disinfection
function" and "Powerful domestic
water heating".
Only use this in case the capacity of
the heat pump can cover the
heating requirements of the house
and domestic hot water over the
complete heating season.
If the outdoor temperature is below
setting [5-03] and [5-02]=1, the
domestic hot water will not be
heated. The domestic hot water
temperature can be maximum the
heat pump OFF temperature.
Q
1: Booster heater operation is
allowed when required.
Q
2: The booster heater is allowed
outside the operation range of the
heat pump for domestic hot water
operation.
Booster heater operation is only
allowed if:
Q
Ambient temperature is out of
the operating range: T
a
<[5-03]
or T
a
>35°C, OR
Q
Domestic hot water
temperature is 2°C lower than
the heat pump OFF
temperature.
The booster heater will be allowed to
operate when T
a
<[5-03] independent of
the status of [5-02].
If bivalent operation is enabled and
permission signal for auxiliary boiler is
ON, the booster heater will be restricted
even when T
a
<[5-03]. See [C-02].
Q
3: The booster heater is allowed
when the heat pump is NOT active
in domestic hot water operation.
Same as setting 1, but simultaneous
heat pump domestic hot water
operation and booster heater
operation is not allowed.
When setting [4-03]=1/2/3, the booster
heater operation can still be restricted by
the booster heater allowance schedule.
N/A
[7-00]
Overshoot temperature. Temperature
difference above the domestic hot water
set point temperature before the booster
heater is turned OFF. The domestic hot
water tank temperature will increase with
[7-00] above selected temperature
set point.
N/A
[7-01]
Hysteresis. Temperature difference
between booster heater ON and booster
heater OFF temperature. The minimum
hysteresis temperature is 2°C.
N/A
[6-00]
The temperature difference determining
the heat pump ON temperature.
N/A
[6-01]
The temperature difference determining
the heat pump OFF temperature.
#
Code
Description
N/A
[8-00]
Minimum running time for domestic hot
water operation. During this time, space
heating/cooling is NOT allowed, even
when the target domestic hot water
temperature has been reached.
N/A
[8-01]
Maximum running time for domestic hot
water operation. Domestic hot water
heating stops even when the target
domestic hot water temperature is NOT
reached. The actual maximum running
time also depends on setting [8-04].
Q
When system layout = Room
thermostat control: This preset value
is only taken into account if there is
a request for space heating or
cooling. If there is NO request for
space heating/cooling, the tank is
heated until heat pump OFF
temperature.
Q
When system layout
≠
Room
thermostat control: This preset value
is always taken into account.
N/A
[8-02]
Anti-recycling time.
Minimum time between two cycles for
domestic hot water. The actual anti-
recycling time also depends on setting
[8-04].
N/A
[8-03]
Booster heater delay timer.
Only for EKHW*
Start-up delay time for the booster heater
when domestic hot water mode is active.
Q
When domestic hot water mode is
NOT active, the delay time is
20 minutes.
Q
The delay time starts from booster
heater ON temperature.
Q
By adapting the booster heater
delay time versus the maximum
running time, you can find an
optimal balance between the energy
efficiency and the heat up time.
Q
If the booster heater delay time is
set too high, it might take a long time
before the domestic hot water
reaches its set temperature.
Q
The setting [8-03] is only meaningful
if setting [4-03]=1. Setting [4-
03]=0/2/3 limits the booster heater
automatically in relation to
heat pump operation time in
domestic water heating mode.
Q
Make sure that [8-03] is always in
relation with the maximum running
time [8-01].
N/A
[8-04]
Additional running time for the maximum
running time depending on the outdoor
temperature [4-02] or [F-01].
#
Code
Description
Содержание EHBH04CA
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