Simultaneous Demand Of Space Heating And Domestic Water Heating - Rotex RKHBRD011AAV1 Manuel D'installation

[b-02] Status: defines whether the weather dependent domestic
water heating is turned ON (1) or OFF (0).
If enabled, the storage set point will be set weather dependent.
In case of a higher ambient temperature (e.g. during summer-
time), the cold supply water to the mixing tap (e.g. shower, bath)
will also have a higher temperature. This makes that the
temperature of the hot water from the domestic hot water tank
may be lower to reach the same water mixing temperature from
the shower or bath mixing tap. In this way, with a lower domestic
hot water tank temperature setting the comfort level can be kept
the same but with a lower energy consumption.
T
70°C
55°C
15°C
A Ambient temperature
T Domestic hot water storage temperature
NOTE The temperatures for weather dependent domestic
water heating (see figure) are fixed and can not be
changed.
[b-03] Set point: storage temperature (see figure above)
If weather dependent domestic water heating is
NOTE
enabled [b-02], the storage temperature will be set
automatically and the field setting [b-03] will be of no
importance.
[C] Leaving water temperature limits
To prevent misuse concerning leaving water temperatures, it is
possible to limit the set points.
[C-00] Set point: leaving water maximum temperature
[C-01] Set point: leaving water minimum temperature
[d] Domestic water heating retention times
The heat pump can only work in either space heating operation or
domestic water heating operation. No simultaneous operation is
possible, except when using multiple set point control (see chapter
"Multiple set point control" on page 26 for more information).
[d-00] Set point: minimum operation time for domestic water
heating
[d-01] Set point: maximum operation time for domestic water
heating
[d-02] Set point: interval minimum stop time of domestic water
heating
Changing the timer values can have an impact on space heating and
domestic water heating heat up timers. The default values are
proposed but can be changed depending on the complete system
installation.
For a detailed explanation about simultaneous request of space
heating and domestic water heating, see chapter "Simultaneous
demand of space heating and domestic water heating" on page 23.
RKHBRD011~016AAV1+Y1
Indoor unit for air to water heat pump system
4PW55786-1
A
25°C
[E] Service mode
[E-00] Vacuum mode
When recovering/vacuuming of the indoor unit is needed, field
setting [E-00] can be activated. It will force the unit into thermo
OFF and will open the expansion valve of the indoor unit R134a
circuit so full vacuuming is possible.
By default [E-00] = 0, set to 1 to enable the vacuum mode.
NOTE Do not forget to restore the field setting [E-00] to
the default value when vacuuming is finished!
[E-04] Pump only operation
When commissioning and installing the unit it is very important
to get all air out of the water circuit.
Through this field setting the pump can be operated without
actual operation of the unit. By doing so this will enhance the air
removal from the circuit. The pump can operate at different
speed:
[E-04] = 0 normal operation of the unit (default)
[E-04] = 1 low pump speed operation
[E-04] = 2 high pump speed operation
See chapter "Final check" on page 30 for more information.
NOTE Do not forget to restore the field setting [E-04] to the
default value when commissioning is finished!
Simultaneous demand of space heating and domestic
water heating
Remote controller leaving water temperature control
When the reheat temperature is reached, the further heat up till
storage temperature of the domestic hot water tank will be decided
by the running timers which are programmed by the installer.
1 Reheat operation
When requesting space heating and domestic water heating
(reheat) at the same time, the domestic water will be heated till
maximum reheat temperature, then space heating will start
again.
D
J
C
H
B
A
A Operation
Space heating
Domestic water heating
B Domestic hot water reheat thermo-on request
C Domestic hot water tank temperature
D Leaving water thermo-on request
F Domestic hot water lower limit temperature
G Domestic hot water upper limit temperature
(maximum possible storage temperature) [b-03]
H Domestic hot water reheat minimum temperature [b-00]
J Domestic hot water reheat maximum temperature [b-01]
ON ON
OFF OFF
ON
OFF
G 75°C
F 35°C
ON
OFF
Installation manual
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