Rotex RKHBH008BB3V3 Manuel D'utilisation page 39

Only for tank without electrical booster heater (RKHTS)
According to local and national regulations, it may be required to
disinfect the domestic hot water tank at a higher temperature
(>60°C). In that case Rotex suggests to install a shunt pump and a
heater element parallel on the domestic hot water tank according to
the figure below.
1
6
1 Domestic hot water tank
2 Shunt pump (field supply)
3 Heater element (field supply)
4 Non-return valve (field supply)
5 Shower (field supply)
6 Indoor unit
WARNING
Never heat up the domestic water tank temperature higher
than 80°C. This will cause damage to the equipment and
potentially danger of leakage of hot water which can cause
burning wounds.
[3] Auto restart
When power returns after a power supply failure, the auto restart
function reapplies the user interface settings at the time of the power
supply failure.
NOTICE
It is therefore recommended to leave the auto restart
function enabled.
Note that with the function disabled the schedule timer will not be
activated when power returns to the unit after a power supply failure.
Press the pr button to enable the schedule timer again.
■ [3-00] Status: defines whether the auto restart function is
turned ON (0) or OFF (1).
NOTICE
If the benefit kWh rate power supply is of the type that
power supply is interrupted, then always allow the auto
restart function.
If you feel unsure about this topic, contact your installer for
advice and information.
[4] Space heating off temperature
Space heating off temperature
■ [4-02] Space heating off temperature: outdoor temperature
above which space heating is turned off to avoid overheating.
[6] Scheduled storage and reheat domestic water heating
INFORMATION
The scheduled storage and reheat domestic water heating
will only be carried out when [4-03]=4 or 5 and the
domestic water heating mode is enabled by the
Scheduled domestic hot water storage
The storage set point can be accessed directly using the
wj buttons.
■
[6-03] Scheduled storage: defines whether the scheduled
domestic water heating storage during night is enabled (1) or
not (0).
■
[6-04] Scheduled storage start time: time of the night at which
the domestic water should be heated.
RKHBH/X008BB
Indoor unit and options for air to water heat pump system
4PW62575-1 – 10.2010
Scheduled/continuous domestic hot water reheat
■
■
■
2
■
3 5
Example 1: Scheduled storage [6-03]=1, scheduled reheat [6-05]=1,
4
disinfection function [2-01]=1 activated.
[2-03]
T
[6-07]
Example 2: Scheduled storage [6-03]=1, continuous reheat [6-05]=2,
disinfection function [2-01]=1 activated.
[2-03]
T
[6-07]
w button.
wi and
[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
T
A B
DHW
[6-04] [6-06] [2-02]
A Scheduled storage operation: activated at [6-04], heat
up domestic hot water untill domestic hot water user
interface set point T
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 14.
t Time
T Domestic hot water temperature
T Domestic hot water user interface set point
DHW
T
A B
DHW
[6-04]
A Scheduled storage operation: activated at [6-04], heat
up domestic hot water untill domestic hot water user
interface set point T
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 14.
t Time
T Domestic hot water temperature
T Domestic hot water user interface set point
DHW
C
(e.g 55°C) is reached.
DHW
C B
[2-02]
(e.g 55°C) is reached.
DHW
Operation manual
15
t
t