Rotex HPSU Bi-Bloc Ultra Series Installer's Reference Manual page 71

Additional capacity step 2
# Code
[9.3.5] [6‑04] ▪ The capacity difference between the
second and first step of the backup
heater at nominal voltage. Nominal
value depends on backup heater
configuration.
Equilibrium
# Code
Equilibrium: Is backup heater
[9.3.6] [5-00]
operation allowed above equilibrium
temperature during space heating
operation?
▪ 1: NOT allowed
▪ 0: Allowed
[9.3.7] [5-01] Equilibrium temperature: Outdoor
temperature below which operation of
the backup heater is allowed.
Range: –15°C~35°C
Operation
# Code
[9.3.8] [4‑00] Backup heater operation:
▪ 0: Restricted
▪ 1: Allowed
▪ 2: Only DHW Enabled for domestic hot
water, disable for space heating
Booster heater
Capacity
The capacity of the booster heater must be set for the energy
metering and/or power consumption control feature to work properly.
When measuring the resistance value of the booster heater, you can
set the exact heater capacity and this will lead to more accurate
energy data.
# Code
[9.4.1] [6‑02] Capacity [kW]. Only applies to domestic
hot water tank with an internal booster
heater. The capacity of the booster
heater at nominal voltage.
Range: 0~10 kW
BSH allowance schedule
Program when the booster heater can operate. You can set a
schedule for the booster heater here using the schedule screen. Two
actions per day are allowed in a week schedule. For more
information, see "8.3.8 Schedule screen:
Example: Only allow the booster heater to operate during the night.
RRGA04~08DAV3 + RHBX04+08DA
ROTEX HPSU Bi-Bloc Ultra
4P495262-1B – 2019.10
Description
Description
Description
Description
Example" [ 4 52].
BSH eco timer
# Code
[9.4.3] [8-03] Booster heater delay timer.
Start-up delay time for the booster heater
when domestic hot water mode is active.
▪ When domestic hot water mode is
NOT
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
Operation
# Code
[9.4.4] [4-03] Defines the operation permission of the
booster heater depending on ambient,
domestic hot water temperature or
operation mode of heat pump. This
setting is only applicable in reheat mode
for applications with separate domestic
hot water tank. When setting
[4‑03]=1/2/3/4, the booster heater
operation can still be restricted by the
booster heater allowance schedule.
[9.4.4] [4-03] ▪ 0: Booster heater operation is NOT
allowed
function"
water heating".
Only use this in case the heat pump
capacity
requirements
domestic
complete heating season.
The booster heater will not be allowed
to
[5‑02]=1. The domestic hot water
temperature can be maximum the heat
pump OFF temperature.
[9.4.4] [4-03] ▪ 1: Booster heater operation is allowed
when required.
8 Configuration
Description
active, the delay time
Description
except for "Disinfection
and "Powerful domestic
can cover the heating
of the house and
hot water during the
operate when T <[5‑03] and
a
Installer reference guide
71
is