8 Configuration
Installer reference guide
49
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1C – 2017.04
#
Code
Description
[A.2.1.8]
[7-02]
<< continuation
▪ 1 (2 LWT zones): 2 leaving water
temperature zones. The zone with the
lowest leaving water temperature (in
heating) is called the main leaving
water temperature zone. The zone
with
the
highest
leaving
water
temperature (in heating) is called the
additional leaving water temperature
zone. In practice, the main leaving
water temperature zone consists of
the higher load heat emitters and a
mixing station is installed to achieve
the desired leaving water temperature.
a
b
▪ a: Add LWT zone
▪ b: Main LWT zone
#
Code
Description
[A.2.1.9]
[F-0D]
When the space heating/cooling control
is OFF by the user interface, the pump is
always OFF. When the space heating/
cooling control is On, you can select the
desired pump operation mode (only
applicable during space heating/cooling)
Pump operation mode:
▪ 0 (Continuous): Continuous pump
operation, regardless of thermo ON or
OFF condition.
Remark:
continuous
pump operation requires more energy
than
sample
or
request
pump
operation.
a
b
c
d
b
c
▪ a: Space heating/cooling control
(user interface)
▪ b: OFF
▪ c: On
▪ d: Pump operation
continued >>
#
Code
Description
[A.2.1.9]
[F-0D]
<< continuation
▪ 1 (Sample)(default): The pump is ON
when there is heating or cooling
demand
as
the
leaving
water
temperature has not reached the
desired temperature yet. When thermo
OFF condition occurs, the pump runs
every 5 minutes to check the water
temperature and demand heating or
cooling if necessary.
Remark:
Sample
is NOT available in external room
thermostat control or room thermostat
control.
a
b
d
e
f
c
g
b
c
▪ a: Space heating/cooling control
(user interface)
▪ b: OFF
▪ c: On
▪ d: LWT temperature
▪ e: Actual
▪ f: Desired
▪ g: Pump operation
continued >>
#
Code
Description
[A.2.1.9]
[F-0D]
<< continuation
▪ 2 (Request): Pump operation based
on request.
Example:
Using a room
thermostat creates thermo ON/OFF
condition. When there is no such
demand, the pump is OFF.
Remark:
Request is NOT available in leaving
water temperature control.
a
d
e
b
b
c
b
c
c
▪ a: Space heating/cooling control
(user interface)
▪ b: OFF
▪ c: On
▪ d: Heating demand (by ext RT or
RT)
▪ e: Pump operation
8.2.3
Quick wizard: Options
Domestic hot water settings
This chapter only applies to systems with a domestic hot water tank
installed:
▪ RHBH/X: an optional domestic hot water tank is available,
▪ RHVH/X: a domestic hot water tank is standard incorporated into
the indoor unit.
