8 Configuration
Installer reference guide
63
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1C – 2017.04
t
T
BH ON
T
DHW
T
HP ON
T
HP OFF
T
HP MAX
T
U
T
BH OFF
[6-01]
[6-00]
[7-00]
[7-01]
T
U
= 70°C
[7-00] = 3°C
[6-01] = 2°C
[6-00] = 7°C
HP
BH
HP
5
10
20
30
40
41
48
50
60
71
70
73
BH
Booster heater
HP
Heat pump. If heating up time by the heat pump takes too
long, auxiliary heating by the booster heater can take place
T
BH OFF
Booster heater OFF temperature (T
U
+[7-00])
T
BH ON
Booster heater ON temperature (T
BH OFF
−[7-01])
T
HP MAX
Maximum heat pump temperature at sensor in domestic
hot water tank
T
HP OFF
Heat pump OFF temperature (T
HP MAX
−[6-01])
T
HP ON
Heat pump ON temperature (T
HP OFF
−[6-00])
T
DHW
Domestic hot water temperature
T
U
User set point temperature (as set on the user interface)
t
Time
Example: setpoint (T
U
)≤maximum heat pump temperature–[6‑01]
(T
HP MAX
–[6‑01])
t
[6-00]
HP
5
10
20
30
40
43
45
T
U
=T
HP OFF
T
HP MAX
T
DHW
T
HP ON
50
HP
Heat pump. If heating up time by the heat pump takes too
long, auxiliary heating by the booster heater can take place
T
HP MAX
Maximum heat pump temperature at sensor in domestic
hot water tank
T
HP OFF
Heat pump OFF temperature (T
HP MAX
−[6-01])
T
HP ON
Heat pump ON temperature (T
HP OFF
−[6-00])
T
DHW
Domestic hot water temperature
T
U
User set point temperature (as set on the user interface)
t
Time
INFORMATION
The maximum heat pump temperature depends on the
ambient temperature.
Timers for simultaneous request space and domestic hot water
operation
#
Code
Description
N/A
[8-00]
Do not change. (default: 1)
#
Code
Description
N/A
[8-01]
Maximum running time for domestic hot
water operation. Domestic hot water
heating stops even when the target
domestic hot water temperature is NOT
reached. The actual maximum running
time also depends on setting [8-04].
▪ When
system
layout
=
Room
thermostat control: This preset value is
only taken into account if there is a
request for space heating or cooling. If
there is NO request for space heating/
cooling, the tank is heated until the
setpoint has been reached.
▪ When
system
layout
≠
Room
thermostat control: This preset value is
always taken into account.
Range: 5~95 minutes (default: 30)
N/A
[8-02]
Anti-recycling time.
Minimum time between two cycles for
domestic hot water. The actual anti-
recycling time also depends on setting
[8-04].
Range: 0~10 hours (default: 3) (step: 0.5
hour) (only for RHBH/X).
Range: 0~10 hours (default: 0.5) (step:
0.5 hour) (only for RHVH/X).
Remark:
The minimum time is 1/2 hour
even when the selected value is 0.
N/A
[8-03]
Booster heater delay timer.
Only for RKHW
Start-up delay time for the booster heater
when domestic hot water mode is active.
▪ When domestic hot water mode is
NOT active, the delay time is
20 minutes.
▪ The delay time starts from booster
heater ON temperature.
▪ By adapting the booster heater delay
time versus the maximum running
time, you can find an optimal balance
between the energy efficiency and the
heat up time.
▪ If the booster heater delay time is set
too high, it might take a long time
before the domestic hot water reaches
its set temperature.
▪ The setting [8-03] is only meaningful if
setting [4-03]=1. Setting [4-03]=0/2/3/4
limits the booster heater automatically
in relation to heat pump operation time
in domestic water heating mode.
▪ Make sure that [8-03] is always in
relation with the maximum running
time [8-01].
Range: 20~95 minutes (default: 50).
N/A
[8-04]
Additional running time for the maximum
running time depending on the outdoor
temperature [4-02] or [F-01].
Range: 0~95 minutes (default: 95).
[8-02]: Anti-recycling time
