5 Configuration
Installation manual
14
EWAQ+005BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P469106-1 – 2017.01
5.2.5
Space heating/cooling control
Leaving water temperature: Main zone
#
Code
Description
[A.3.1.1.1]
N/A
Set point mode:
▪ 0 (Fixed): Absolute
▪ 1
(Weather
dep.):
Weather-
dependent
▪ 2 (Fixed/scheduled): Absolute +
scheduled (only for leaving water
temperature control)
▪ 3
(WD/scheduled):
Weather-
dependent + scheduled (only for
leaving water temperature control)
[7.7.1.1]
[1-00]
[1-01]
[1-02]
[1-03]
Weather-dependent curve (heating):
[1-03]
[1-02]
Ta
Tt
[1-00]
[1-01]
▪ T
t
: Target leaving water temperature
(main)
▪ T
a
: Outdoor temperature
[7.7.1.2]
[1-06]
[1-07]
[1‑08]
[1-09]
Weather-dependent curve (cooling):
[1-09]
[1-08]
Ta
Tt
[1-06]
[1-07]
▪ T
t
: Target leaving water temperature
(main)
▪ T
a
: Outdoor temperature
Leaving water temperature: Delta T source
#
Code
Description
[A.3.1.3.1]
[9-09]
Heating: required temperature
difference between entering and
leaving water.
In case a minimum temperature
difference is required for the good
operation of the heat emitters in heating
mode.
[A.3.1.3.2]
[9-0A]
Cooling: required temperature
difference between entering and
leaving water.
In case a minimum temperature
difference is required for the good
operation of the heat emitters in cooling
mode.
Leaving water temperature: Modulation
#
Code
Description
[A.3.1.1.5]
[8-05]
Leaving water temperature modulation:
▪ 0 (No): Disabled
▪ 1 (Yes): Enabled. The leaving water
temperature is calculated according
to the difference between desired
and actual room temperature.
This allows better matching of the
heat
pump
capacity
to
actual
required capacity and results in less
start/stop cycles of the heat pump
and more economic operation.
N/A
[8-06]
Leaving water temperature maximum
modulation:
0°C~10°C (default: 3°C)
Requires modulation to be enabled.
This is the value by which the desired
leaving water temperature is increased
or lowered.
INFORMATION
When leaving water temperature modulation is enabled,
the weather‑dependent curve needs to be set to a higher
position than [8-06] plus the minimum leaving water
temperature setpoint required to reach a stable condition
on the comfort setpoint for the room. To increase
efficiency, modulation can lower the leaving water setpoint.
By setting the weather‑dependent curve to a higher
position, it cannot drop below the minimum setpoint. Refer
to the illustration below.
a
+[8-06]
−[8-06]
b
Ta
Tt
a
Weather-dependent curve
b
Minimum leaving water temperature setpoint required to
reach a stable condition on the comfort setpoint for the
room.
Leaving water temperature: Emitter type
#
Code
Description
[A.3.1.1.7]
[9-0B]
Reaction time of the system:
▪ 0: Quick.
Example:
Small water
volume and fan coils.
▪ 1: Slow.
Example:
Large water
volume, floor heating loops.
Depending on the system water volume
and the heat emitters type, the heat up
or cool down of a space can take
longer. This setting can compensate for
a slow or a quick heating/cooling
system by adjusting the unit capacity
during the heat up/cool down cycle.
5.2.6
Contact/helpdesk number
#
Code
Description
[6.3.2]
N/A
Number that users can call in case of
problems.
Summary of Contents for EWAQ004BAVP
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