Rotex HPSU Bi-Bloc Ultra Series Installer's Reference Manual page 70

8 Configuration
# Code
(a)
[9.2.1] [E‑05] ▪ No DHW
No tank installed.
(a)
[E‑06]
▪ EKHWS/E
(a)
[E‑07]
Tank with booster heater installed at
the side of the tank.
▪ EKHWP/HYC
Tank with optional booster heater
installed at the top of the tank.
(a)
Use the menu structure instead of the overview settings.
Menu structure setting [9.2.1] replaces the following 3
overview settings:
• [E-05]: Can the system prepare domestic hot water?
• [E-06]: Is a domestic hot water tank installed in the
system?
• [E-07]: What kind of domestic hot water tank is
installed?
In case of EKHWP/HYC, we recommend to set the temperature of the
booster heater NOT higher than 70°C.
DHW pump
# Code
[9.2.2] [D‑02] DHW pump:
▪ 0: No DHW pump: NOT installed
▪ 1: Instant hot water: Installed for
instant hot water when water is
tapped. The user sets the operation
timing of the domestic hot water pump
using the schedule. Control of this
pump is possible with the user
interface.
▪ 2:
disinfection.
disinfection function of the domestic
hot water tank is running. No further
settings are needed.
See also illustrations below.
Domestic hot water pump installed for...
Instant hot water
h
f
c
a
i
b
g
a Indoor unit
b Tank
c Domestic hot water pump
d Heater element
e Non‑return valve
f Shower
g Cold water
h Domestic hot water OUT
i Recirculation connection
DHW pump schedule
Program a schedule for the DHW pump (only for field supplied
domestic hot water pump for secondary return).
Program a domestic hot water pump schedule to determine when
to turn on and off the pump.
When turned on, the pump runs and makes sure hot water is
instantly available at the tap. To save energy, only turn on the pump
during periods of the day when instant hot water is necessary.
Backup heater
Besides the type of backup heater, the voltage, configuration and
capacity must be set on the user interface.
Installer reference guide
70
Description
Description
Disinfection:
Installed for
It runs when the
Disinfection
h
c
a
i
d f
b
e g
The capacities for the different steps of the backup heater must be
set for the energy metering and/or power consumption feature to
work properly. When measuring the resistance value of each heater,
you can set the exact heater capacity and this will lead to more
accurate energy data.
Backup heater type
The backup heater is adapted to be connected to most common
European electricity grids. The type of backup heater must be set on
the user interface. For units with a built-in backup heater, the type of
heater can be viewed but not changed.
# Code
[9.3.1] [E‑03] ▪ 2: 3V
▪ 3: 6V
▪ 4: 9W
Voltage
▪ For a 3V model, this is fixed to 230V, 1ph.
▪ For a 6V model, this can be set to:
▪ 230V, 1ph
▪ 230V, 3ph
▪ For a 9W model, this is fixed to 400V, 3ph.
# Code
[9.3.2] [5‑0D] ▪ 0: 230V, 1ph
▪ 1: 230V, 3ph
▪ 2: 400V, 3ph
Configuration
The backup heater can be configured in different ways. It can be
chosen to have a 1-step only backup heater or a backup heater with
2 steps. If 2 steps, the capacity of the second step depends on this
setting. It can also be chosen to have a higher capacity of the
second step in emergency.
# Code
[9.3.3] [4‑0A] ▪ 0: Relay 1
▪ 1: Relay 1 / Relay 1+2
▪ 2: Relay 1 / Relay 2
▪ 3: Relay 1 / Relay 2 Emergency Relay
1+2
(a) Not available for 3V models.
INFORMATION
Settings [9.3.3] and [9.3.5] are linked. Changing one
setting influences the other. If you change one, check if the
other is still as expected.
INFORMATION
During normal operation, the capacity of the second step of
the backup heater at nominal voltage is equal to
[6‑03]+[6‑04].
INFORMATION
If [4‑0A]=3 and emergency mode is active, the power
usage of the backup heater is maximal and equal to
2×[6‑03]+[6‑04].
Capacity step 1
# Code
[9.3.4] [6‑03] ▪ The capacity of the first step of the
backup heater at nominal voltage.
Description
Description
Description
(a)
(a)
(a)
Description
RRGA04~08DAV3 + RHBX04+08DA
ROTEX HPSU Bi-Bloc Ultra
4P495262-1B – 2019.10