Heat Source Settings - Daikin ERHQ-BW1 Installer's Reference Manual

T
DHW
[2-03]
T
H
T
U
00.00 01.00 22.00
T Domestic hot water temperature
DHW
T User set point temperature
U
T High set point temperature [2-03]
H
t Time
WARNING
Be aware that the domestic hot water temperature at the
hot water tap will be equal to the value selected in field
setting [2-03] after a disinfection operation.
When the high domestic hot water temperature can be a
potential risk for human injuries, a mixing valve (field
supply) shall be installed at the hot water outlet connection
of the domestic hot water tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to the applicable legislation.
CAUTION
Be sure that the disinfection function start time [A.4.4.3]
with defined duration [A.4.4.5] is NOT interrupted by
possible domestic hot water demand.
INFORMATION
Disinfection function is restarted in case the domestic hot
water temperature drops 5°C below the disinfection target
temperature within the duration time.

8.3.3 Heat source settings

Backup heater
For systems without domestic hot water tank or with separate
domestic hot water tank (only for EHBH/X)
Backup heater operation mode: defines when backup heater
operation is enabled or disabled. This setting is only overruled when
backup heating is required during defrost operation or malfunctioning
of the outdoor unit (when [A.5.1.2] [4-06] is enabled)
For systems with an integrated domestic hot water tank (only for
EHVH/X)
Backup heater operation mode: defines when backup heater
operation is disabled or only allowed during domestic hot water
operation. This setting is only overruled when backup heating is
required during defrost operation or malfunctioning of the outdoor unit
(when [A.5.1.2] [4-06] is enabled)
EHVH/X16
Daikin Altherma - Low Temperature Split
4P313777-1 – 2012.05
[2-04]
23.00 24.00 t
[2-02]
# Code
[A.5.1.1] [4-00] Backup heater operation:
[A.5.1.2] [4-06] Defines if during emergency operation
the backup heater is:
Emergency operation will startup backup
heater operation during certain outdoor
malfunctions.
[A.5.1.3] [4-07] Defines whether backup heater second
step is:
In this way it is possible to limit the
backup heater capacity.
N/A [5-00] Is backup heater operation allowed
above equilibrium temperature during
space heating operation?
[A.5.1.4] [5-01] Equilibrium temperature.
Outdoor temperature below which
operation of the backup heater is
allowed.
INFORMATION
Only for systems with integrated domestic hot water tank: If
the storage temperature set point is higher than 50°C,
Daikin recommends NOT to disable the backup heater
second step because it will have a big impact on the
required time for the unit to heat up the domestic hot water
tank.
Bivalent
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-03] Bivalent ON
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.
8 Configuration
Description
0: Disabled
1: Enabled
2: Limited, only enabled during
domestic hot water operation of for
system with integrated domestic hot
water tank.
1: Allowed
0: NOT allowed
1: Allowed
0: NOT allowed
1: NOT allowed
0: Allowed
temperature: defines the
Installer reference guide
outdoor
46