8 Configuration
Installation manual
28
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620240-1 – 2020.06
Emitter type
Heating up or cooling down the main zone can take longer. This
depends on:
▪ The water volume of the system
▪ The heater emitter type of the main zone
The setting
Emitter type
can compensate for a slow or a quick
heating/cooling system during the heat up/cool down cycle. In room
thermostat control,
Emitter
type
influences the maximum
modulation of the desired leaving water temperature, and the
possibility for usage of the automatic cooling/heating changeover
based on the indoor ambient temperature.
It is important to set
Emitter type
correctly and in accordance with
your system layout. The target delta T for the main zone depends on
it.
#
Code
Description
[2.7]
[2‑0C]
▪ 0:
Underfloor heating
▪ 1:
Fancoil unit
▪ 2:
Radiator
The setting of the emitter type has an influence on the space heating
setpoint range and the target delta T in heating as follows:
Description
Space heating
setpoint range
Target delta T in
heating
0:
Underfloor
heating
Maximum 55°C
Variable
1:
Fancoil unit
Maximum 55°C
Variable
2:
Radiator
Maximum 60°C
Fixed 8°C
NOTICE
Average
emitter
temperature
=
Leaving
water
temperature – (Delta T)/2
This means that for a same leaving water temperature
setpoint, the average emitter temperature of radiators is
lower than that of underfloor heating because of a bigger
delta T.
Example radiators: 40–8/2=
36°C
Example underfloor heating: 40–5/2=
37.5°C
To compensate, you can:
▪ Increase
the
weather-dependent
curve
desired
temperatures [2.5].
▪ Enable leaving water temperature modulation and
increase the maximum modulation [2.C].
Control
Define how the operation of the unit is controlled.
Control
In this control...
Leaving water
Unit operation is decided based on the leaving
water temperature regardless the actual room
temperature and/or heating or cooling demand
of the room.
External room
thermostat
Unit operation is decided by the external
thermostat or equivalent (e.g. fan coil units).
Room thermostat
Unit operation is decided based on the ambient
temperature of the dedicated Human Comfort
Interface (BRC1HHDA used as room
thermostat).
#
Code
Description
[2.9]
[C‑07]
▪ 0:
Leaving water
▪ 1:
External room thermostat
▪ 2:
Room thermostat
Setpoint mode
Define the setpoint mode:
▪
Fixed
: the desired leaving water temperature does not depend on
the outdoor ambient temperature.
▪ In
WD heating, fixed cooling
mode, the desired leaving water
temperature:
▪ depends on the outdoor ambient temperature for heating
▪ does NOT depend on the outdoor ambient temperature for
cooling
▪ In
Weather
dependent
mode, the desired leaving water
temperature depends on the outdoor ambient temperature.
#
Code
Description
[2.4]
N/A
Setpoint mode
:
▪
Fixed
▪
WD heating, fixed cooling
▪
Weather dependent
When weather dependent operation is active, low outdoor
temperatures will result in warmer water and vice versa. During
weather dependent operation, the user can shift the water
temperature up or down by a maximum of 10°C.
Schedule
Indicates if the desired leaving water temperature is according to a
schedule. Influence of the LWT setpoint mode [2.4] is as follows:
▪ In
Fixed
LWT setpoint mode, the scheduled actions consist of
desired leaving water temperatures, either preset or custom.
▪ In
Weather dependent
LWT setpoint mode, the scheduled
actions consist of desired shift actions, either preset or custom.
#
Code
Description
[2.1]
N/A
▪ 0:
No
▪ 1:
Yes
8.2.6
Configuration wizard: Additional zone
The most important settings for the additional leaving water zone
can be set here.
Emitter type
For more info about this functionality, see
#
Code
Description
[3.7]
[2‑0D]
▪ 0:
Underfloor heating
▪ 1:
Fancoil unit
▪ 2:
Radiator
Control
The control type is displayed here, but cannot be adjusted. It is
determined by the control type of the main zone. For more info about
the functionality, see
"8.2.5 Configuration wizard: Main zone"
#
Code
Description
[3.9]
N/A
▪ 0:
Leaving water
if the control type
of the main zone is
Leaving water
.
▪ 1:
External room thermostat
if the
control type of the main zone is
External room thermostat
or
Room
thermostat
.
Setpoint mode
For more info about this functionality, see
