Heat Source Settings - Daikin Altherma Installer's Reference Manual

8 Configuration
# Code
[A.4.4.3] [2-02] Start time: 00~23:00, step: 1:00.
[A.4.4.4] [2-03] Temperature target:
▪ With booster heater: 55~80°C, default:
70°C.
▪ Without booster heater: 60°C (fixed).
[A.4.4.5] [2-04] Duration:
▪ With booster heater: 5~60 minutes,
default: 10 minutes.
▪ Without
minutes, default: 60 minutes.
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.
CAUTION
The booster heater permission schedule is used to restrict
or allow booster heater operation based on a weekly
program. Advice: In
disinfection function, at least allow the booster heater (by
the weekly program) for minimum 4 hours starting from the
scheduled start-up of disinfection. If the booster heater is
restricted during disinfection, this function will NOT be
successful and the applicable warning AH will be
generated.
Installer reference guide
60
Description
booster heater: 40~60
[2-04]
23.00 24.00 t
[2-02]
order to avoid unsuccessful
INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪ When the Domestic hot water > Setpoint mode >
Reheat or Reheat + sched. is selected, it is
recommended to program the start-up the disinfection
function at least 4 hours later than the last expected
large hot water tapping. This start-up can be set by
installer settings (disinfection function).
▪ When the Domestic hot water > Setpoint mode >
Scheduled only is selected, it is recommended to
program a Storage eco 3 hours before the scheduled
start-up of the disinfection function to preheat the tank.
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)
# Code
[A.5.1.1] [4-00] Backup heater operation:
▪ 0: Disabled
▪ 1: Enabled
▪ 2:
domestic hot water operation of for
system with integrated domestic hot
water tank.
[A.5.1.2] [4-06] Defines if during emergency operation
the backup heater is:
▪ 1: Allowed
▪ 0: NOT allowed
Emergency operation will startup backup
heater operation during certain outdoor
malfunctions.
[A.5.1.3] [4-07] Defines whether backup heater second
step is:
▪ 1: Allowed
▪ 0: NOT allowed
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?
▪ 1: NOT allowed
▪ 0: Allowed
Description
Limited, only enabled during
ERLQ004~008CAV3 + EHBH/X04+08CA
Daikin Altherma - Low Temperature Split
4P313774-1C – 2012.11