32
www.aerex.de
Reco-Boxx ZXR / ZXA / Flat – Operation and maintenance instructions
[03/
2022 ]
Internal coils
Water preheating coil
By preheating the outdoor air, it is possible to prevent
moisture precipitation in the AHU’s outdoor air filter, to
reduce the risk of frosting in the heat exchanger and
to eliminate the risk that pressure sensors and mo-
tor control systems are operating in too low ambient
temperature. The setpoint is of the exhaust air temper-
ature.
Setting
Settings range
Factory setting
Setpoint
-9,9...99,9 °C
1,0 °C
Electrical preheating coil
By preheating the outdoor air, it is possible to prevent
moisture precipitation in the outdoor air fi lter of the air
handling unit, to reduce the risk of frosting in the heat
exchanger and to eliminate the risk that the ambient
temperature will drop lower than minimum permis-
sible. The electrical preheating coil is installed and
configured in factory. The electrical preheating coil
will always have its separate power supply and main
switch.
Setting
Settings range
Factory setting
Setpoint
-9,9...99,9 °C
1,0 °C
PID - Pro-
portional Band
0...100
5
PID - Integral
0...100
30
PID - Derivate
0...100
11
Electrical postheating coil
The electrical postheating coil is installed and config-
ured in factory. The electrical postheating coil will al-
ways have its separate power supply and main switch.
The capacity of the coil will be controlled proportion-
ally in order to keep a temperature as defined by the
selected operating mode.
Setting
Settings range
Factory setting
Control mode
Exhaust
Supply
Supply
Setpoint
-9,9...99,9 °C
21,0 °C
PID - Pro-
portional Band
0...100
5
PID - Integral
0...100
30
PID - Derivate
0...100
11
Water postheating coil
The water postheating coil is installed and configured
in factory. The 3-way valve is not installed and will
have to be installed and wired on site. The capacity
of the coil will be controlled proportionally in order to
keep a temperature as defined by the selected oper-
ating mode. The output DO7 is activated whenever
heating is desired.
Setting
Settings range
Factory setting
Control mode
Exhaust
Supply
Supply
Setpoint
-9,9...99,9 °C
21,0 °C
Reaction Speed 1...10
5
39
Operation and maintenance instructions
Internal coils
Water preheating coil
By preheating the outdoor air, it is possible to prevent mois-
ture precipitation in the AHU’s outdoor air filter, to reduce
the risk of frosting in the heat exchanger and to eliminate
the risk that pressure sensors and motor control systems are
operating in too low ambient temperature. The setpoint is of
the exhaust air temperature.
Setting
Settings
range
Factory
setting
Setpoint
-9,9...99,9°C
1,0°C
Electrical preheating coil
By preheating the outdoor air, it is possible to prevent
moisture precipitation in the outdoor air fi lter of the air
handling unit, to reduce the risk of frosting in the heat
exchanger and to eliminate the risk that the ambient tem-
perature will drop lower than minimum permissible. The
electrical preheating coil is installed and configured in fac-
tory. The electrical preheating coil will always have its sepa-
rate power supply and main switch.
Setting
Settings
range
Factory
setting
Setpoint
-9,9...99,9°C
1,0°C
PID - Proportional Band
0...100
5
PID - Integral
0...100
30
PID - Derivate
0...100
11
Electrical postheating coil
The electrical postheating coil is installed and configured in
factory. The electrical postheating coil will always have its
separate power supply and main switch. The capacity of the
coil will be controlled proportionally in order to keep a tem-
perature as defined by the selected operating mode.
Setting
Settings
range
Factory
setting
Control mode
Exhaust
Supply
Supply
Setpoint
-9,9...99,9°C
21,0°C
PID - Proportional Band
0...100
5
PID - Integral
0...100
30
PID - Derivate
0...100
11
Water postheating coil
The water postheating coil is installed and configured
in factory. The 3-way valve is not installed and will have
to be installed and wired on site. The capacity of the coil
will be controlled proportionally in order to keep a tem-
perature as defined by the selected operating mode. The
output DO7 is activated whenever heating is desired.
Setting
Settings
range
Factory
setting
Control mode
Exhaust
Supply
Supply
Setpoint
-9,9...99,9°C
21,0°C
Reaction Speed
1...10
5
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