Daikin EKCBX008BBV3, Operation Manual

Page: 17 / 24

EKCBX/H008BBV3
Unit for air to water heat pump system
4PW67442-1A – 12.2010
Operation manual
16
Scheduled/continuous domestic hot water reheat
■
[6-05] Reheat: defines whether the scheduled domestic water
reheat during daytime is enabled (1) or continuous reheat is
enabled (2) or reheat is disabled (0)
■
[6-06] Scheduled reheat start time: time of the day at which the
domestic water should be heated.
■
[6-07] Domestic hot water reheat set point
■
[6-08] Domestic hot water reheat set point hysteresis
Example 1 : Scheduled storage [6-03]=1, scheduled reheat [6-05]=1,
disinfection function [2-01]=1 activated.
A Scheduled storage operation: activated at [6-04], heat
up domestic hot water untill domestic hot water user
interface set point T
DHW
(e.g 55°C) is reached.
B Scheduled reheat operation : activated at [6-06], heat up
domestic hot water untill domestic hot water reheat set
point [6-07] (e.g 45°C ) is reached.
C Disinfection operation (if activated): activated at [2-02],
heat up domestic hot water untill domestic hot water
disinfection set point [2-03] (e.g 60°C) is reached. Refer to
"[2] Disinfection function" on page 15 .
t Time
T Domestic hot water temperature
T
DHW
Domestic hot water user interface set point
Example 2 : Scheduled storage [6-03]=1, continuous reheat [6-05]=2,
disinfection function [2-01]=1 activated.
A Scheduled storage operation: activated at [6-04], heat
up domestic hot water untill domestic hot water user
interface set point T
DHW
(e.g 55°C) is reached.
B Continuous reheat operation : continues activated heat
up domestic water till domestic hot water reheat set point
[6-07] (e.g 45°C) is reached with a hysteresis of [6-08].
C Disinfection operation (if activated): activated at [2-02],
heat up domestic hot water untill domestic hot water
disinfection set point [2-03] (e.g 60°C) is reached. Refer to
"[2] Disinfection function" on page 15 .
t Time
T Domestic hot water temperature
T
DHW
Domestic hot water user interface set point
[9] Heating and cooling set point ranges
The purpose of this field setting is to prevent the user from selecting a
wrong (i.e., too hot or too cold) leaving water temperature. Thereto
the heating temperature set point range and the cooling temperature
set point range available to the user can be configured.
■
[9-00] Heating set point upper limit: maximum leaving water
temperature for heating operation.
■
[9-01] Heating set point lower limit: minimum leaving water
temperature for heating operation.
■
[9-02] Cooling set point upper limit: maximum leaving water
temperature for cooling operation.
■
[9-03] Cooling set point lower limit: minimum leaving water
temperature for cooling operation.
A B C
T
t
[2-03]
T
DHW
[6-07]
[6-04] [6-06] [2-02]
A B C
[6-08]
B
T
t
[2-03]
[6-07]
T
DHW
[6-04] [2-02]
INFORMATION
■
Make sure the domestic water is only heated up to the
domestic hot water temperature you require.
Start with a low domestic hot water storage
temperature set point, and only increase if you feel
that the domestic hot water supply temperature is not
sufficient for your needs (this depends on your water
using pattern).
■
Make sure the domestic water is not heated
unnecessary. Start with activating automatic storage
during night (default setting). If it seems that the
domestic hot water night storage operation is not
sufficient for your needs, an additional scheduled
reheat during daytime can be set.
NOTICE
The setting [4-03] shall not be modified. The installer
selected the proper setting for your application.
INFORMATION
The status of this setting is only mentioned to indicate
which settings and functions are applicable for your
application.
CAUTION
■
In case of a floor heating application, it is important to
limit the maximum leaving water temperature at
heating operation according to the specifications of
the floor heating installation.
■
In case of a floor cooling application, it is important to
limit the minimum leaving water temperature at
cooling operation (field setting of parameter [9-03]) to
16~18°C to prevent condensation on the floor.