Heat Source Settings - Daikin ERLQ004CA Installer's Reference Manual

Disinfection
Applies only to installations with a domestic hot water tank.
The disinfection function disinfects the domestic hot water tank by
periodically heating the domestic hot water to a specific temperature.
CAUTION
The disinfection function settings must be configured by the
installer according to the applicable legislation.
# Code
[A.4.4.2] [2-00] Operation day:
[A.4.4.2] [2-01] Disinfection
[A.4.4.3] [2-02] Start time: 00~23:00, step: 1:00.
[A.4.4.4] [2-03] Temperature target:
[A.4.4.5] [2-04] Duration:
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.
EHBH04+08 + ERLQ004~008
Daikin Altherma - Low Temperature Split
4P313774-1 – 2012.05
Description
Each day
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
No
Yes
With booster heater: 55~80°C,
default: 70°C.
Without booster heater:
(fixed).
With booster heater: 5~60 minutes,
default: 10 minutes.
Without booster heater:
minutes, default: 60 minutes.
[2-04]
23.00 24.00 t
[2-02]
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)
60°C
#
[A.5.1.1] [4-00]
40~60
[A.5.1.2] [4-06]
[A.5.1.3] [4-07]
N/A [5-00]
[A.5.1.4] [5-01]
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.
8 Configuration
Code Description
Backup heater operation:
0: Disabled
1: Enabled
2: Limited, only enabled during
domestic hot water operation of for
system with integrated domestic hot
water tank.
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.
Defines whether backup heater second
step is:
1: Allowed
0: NOT allowed
In this way it is possible to limit the
backup heater capacity.
Is backup heater operation allowed
above equilibrium temperature during
space heating operation?
1: NOT allowed
0: Allowed
Equilibrium temperature.
Outdoor temperature below which
operation of the backup heater is
allowed.
Installer reference guide
58