CIAT FLOWAY Use and maintenance manual

Control manual
06 - 2016
NA 09.61 N
FLOWAY Control

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CONTENTS
1
Supervision and control 3
1.1 The program 3
1.2 The HMI terminal 3
1.2.1 Using the HMI terminal keys 4
1.3 The room terminal (Option) 5
1.3.1 Controls 5
1.3.2 Displays 6
1.3.3 Room terminal information, settings and browsing 7
1.3.4 Electrical connections 8
1.4 The controller 8
1.5 Description of the air handling units 9
1.6 Temperature regulation functional analysis 9
1.7 Management of fire faults 9
1.8 Managing night cooling 9
1.9 Free cooling management 9
1.10 Control unit for rotary heat exchanger 10
1.10.1 Functions built into the control unit 10
1.10.2 Other 13
1.10.3 Reversal depending on the unit type 14
2
Overview of the screens 14
2.1 Menu or Esc button 14
2.1.1 Access level selection menu 15
2.2 Setpoint menu 15
2.2.1 Supply air T° setpoint calculation in "Precision" mode 16
2.2.2 Supply air T° setpoint calculation in "Energy optimisation" mode 16
2.3 Machine parameters menu 18
2.4 Adjustment parameters menu 24
2.4.1 Regulated T° compensation based on the outdoor T° 25
2.4.2 Fan flow rate compensation based on outdoor T° 26
2.4.3 Duct pressure compensation based on the outdoor T° 26
2.4.4 Fan flow rate compensation based on the regulated T° 26
2.4.5 "Downgraded fresh air flow rate" function 26
2.5 Read-only parameters menu 30
2.5.1 Inputs 30
2.5.2 Outputs 31
2.5.3 Setpoints 32
2.5.4 Counters 32
2.6 Fault memory menu 33
2.7 Test mode menu 33
2.8 Time prog menu 36

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2.9 Communication menu 37
2.10 Alarms menu 38
2.11 Access level menu 38
2.12 Versions menu 39
3
Managing a network of controllers 40
3.1 pLAN electrical connections 40
3.1.1 Connecting controllers to the pLAN 40
3.1.2 Connecting a remote screen to the pLAN 40
3.2 Addressing the pLAN 41
3.3 Changing the controller address 41
3.3.1 Addressing the HMI terminals 41
3.3.2 Assigning private and shared terminals 42
3.3.3 Checking the pLAN address 42
4
Replacing the lithium battery 43
5
Supervision 43
5.1 CMS 43
5.2 The datapoint database 43
5.3 Modbus 44
5.3.1 Modbus RTU connection diagram 44
5.3.2 RS485 connection close-up 44
5.3.3 Modbus TCP connection 45
5.3.4 Variables 47
5.3.4.1 Controls 47
5.3.4.2 Setpoints 47
5.3.4.3 Reading parameters 48
5.3.4.4 Alarms 51
5.4 LON 52
5.4.1 LON scope of supply 52
5.4.2 The digital datapoints 52
5.4.3 The analogue datapoints 53
5.5 KNX 53
5.5.1 Description of KNX communication card 54
5.5.2 Variables 55
5.5.3 The plugin 57
5.5.4 Installing the plugin 57
5.5.5 Assigning the physical address 59
5.5.6 Downloading the XML file 59
6
Table of alarms 61
7
Control curves 62
7.1 Filter and heat exchanger fouling check 62
7.2 Supply air temperature control 62
7.3 Air quality check 62

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Supervision and control
1.1 The program
This air handling unit is managed by its PLC. In addition to its control functions, it also monitors and detects any faults
with the air handling unit.
The HMI terminal displays the following data which can be edited at any time:
-Values of connected sensors
-Unit on/off cycles
-Calibration of the sensors
-Detection of alarms and log of the last 100 alarms
-Password-protected configuration and operating parameters
-Device running times and time delays
-Management of time programs (4 daily, 4 weekly and 4 yearly programs)
-Language selected (French, English, German, Italian, Spanish, Dutch)
The connection with the pLAN network allows the program to use a terminal mounted on the front of the AHU and/or a
wall-mounted terminal installed in the room to be air conditioned.
IMPORTANT: To avoid any problems, the password must be known only by qualified personnel.
1.2 The HMI terminal
The terminal provided is equipped with a remote LCD display (8 lines x 22 columns) on the outside of the unit, which
has 6 keys (connected with a phone cable). It allows all of the program operations to be carried out. The terminal
displays the unit's operating conditions at any point in time and allows the parameters to be modified; in addition, it
can be disconnected from the main board as its presence is not strictly required.

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1.2.1 Using the HMI terminal keys
Key
Description
Returns to the main Menu mask when pressed in any loop.
The Menu loop displays the state of the unit.
Provides access to the "Menu"
Resets all setpoints, parameters and time delay values to their factory settings.
The red button is used to display alarms and confirm acknowledgeable faults. It lights up
when an alarm is triggered.
The button has two functions:
1. used to manage the masks on the display (next mask)
2. used to adjust the values of the monitoring parameters (decrease)
The button has two functions:
1. used to manage the masks on the display (previous mask)
2. used to adjust the values of the monitoring parameters (increase)
Turns the unit on and off.
The

button is used to confirm changes. It is continuously backlit to indicate when the power is
on.

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1.3 The room terminal (Option)
The terminal supplied is equipped with a digital display, 4 buttons and a rotary encoder.
Once installed in the premises, the device can measure the ambient temperature and enables remote control of the
air handling unit.
1.3.1 Controls
1. Button not used
2.
Press and hold (2 s) to access the clock
setting menu.
3.
Button to switch on the unit and modify the
ventilation speed.
4. Button to switch off the unit.
5. Encoder:
- Press: confirms the new setpoint value
- Turn: browse between menus and modify the
setpoint
1
2
3
4
5

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1.3.2 Displays
1. Unit operating mode
2. Main display area
3. Ventilation operating mode
4. Ventilation operating speed
5. Temperature unit
6. Indicates whether the value displayed in the main area
is a setpoint
7. Indicates whether the value displayed in the main area
is a humidity
8. Area not used
9. Day of the week
10. Operating icons
11. Secondary display area
12. Run time range mode
Details:
1. Unit operating mode
- : Unit in heating mode
- : Unit in cooling mode
2. Main display area
- Displays "OFF" when the unit is switched off manually via the room terminal
- Displays the ambient temperature
- Displays the temperature setpoint when the encoder is turned
- Displays the various menus during browsing
- Displays the various setting parameters
3. Ventilation operating mode
- : Indicates that the ventilation is active and in setpoint-based flow or Supply air duct pressure mode.
- : Indicates that the ventilation is in automatic mode based on the regulated temperature.
- No display: the unit has been switched off by the HMI terminal, by a major fault or to Standby by a time
program.
4. Ventilation operating speed
- : The ventilation is operating at reduced flow or Eco Supply air duct pressure
- : The ventilation is operating at a nominal flow rate or Comfort Supply air duct pressure
5. Temperature unit
- °C: temperature expressed in degrees Celsius
- °F: temperature expressed in degrees Fahrenheit (not used)
6. Indicates whether the value displayed in the main area is a setpoint
After the encoder has been turned and then pressed, it is possible to modify the temperature setpoint
characterised by the indicator .
7. Area not used
8. Area not used
9. Area not used
10. Operating icons
Only the bell is used. It indicates the presence of a fault. This icon is inhibited when the faults are cleared
via the HMI terminal.
11. Secondary display area
Displays the time on the controller. This area can also be used for modifying the controller time.
12. Run time range mode

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1.3.3 Room terminal information, settings and browsing
The diagram below shows the various browsing, information and setting options on the room terminal:
Terminal energising
A few seconds (2-3s)
Terminal initialising
A few seconds (2-3s)
Unit off
Press
Press
Unit on
(default
screen)
Communication fault
with the controller or
terminal presence not
validated in the
controller

pressed and
held
Encoder turned and pressed
Clock
modification
To modify and validate
the temperature
setpoint. Returns to the
default screen after a
few seconds.
Encoder turned
Not used
Encoder turned
Exits the alarm menu when
the encoder is pressed.
u1.3
Cn

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1.3.4 Electrical connections
The room terminal and the controller are electrically connected using an AWG20/22 shielded cable (not supplied)
comprising two twisted pairs.
The first and last controller must be no more than 500m apart. This network must never run parallel to power cables at
a distance of less than 50 cm. These cables may cross, but perpendicularly. You are requested not to form a loop
with the network cable or the earth braid, and to properly separate the various cable families (control, power, earth
and communication bus).
In case of transmission problems, it is vital to connect a 120Ω ¼W electrical resistor between terminals TX+ and TX-
of the room terminal, as indicated in the manual supplied with the room terminal.
1.4 The controller
The descriptions of the terminals on the controller are provided below.
1. power supply connector [G(+), G0(-)]
2. Yellow power LED and red alarm LED
3. additional power supply for terminal and 0-5 V ratiometric sensors
4. NTC, 0-5V, 0-10V universal analogue inputs
Room terminal
Controller
J11 terminals
To terminal 4 Connector 19
To terminal 2 Connector 19

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5. NTC passive analogue inputs
6. 0-10 V analogue outputs
7. 24 V AC/V DC digital inputs
8. 230 V AC or 24 V AC/V DC digital inputs;
9. Not used
10. connector for all HMI terminals and for downloading the application program
11. relay digital outputs
12. I/O expansion card connector
13. pLAN/graphical terminal/room terminal network connector
14. housing cover for RS485 serial card, Modbus, LON, KNX
15. cover for inserting the fieldbus card
16. Built-in terminal (LCD, buttons and LED) (not available)
1.5 Description of the air handling units
Each air handling unit performs the following functions:
- Air filtration
- Ventilation
- Heating or cooling of air supplied to the room by means of a mixed water coil (hot or cold)
- Control, monitoring, reporting and regulation of its components.
1.6 Temperature regulation functional analysis
By increasing the regulated temperature, the controller will calculate the exact cooling requirement.
If possible it will authorise Free Cooling and then gradually adjust the rotation speed of the heat exchanger wheel (for
Classic model only, and if conditions permit), followed by the "Cold" or "Mixed" No.1 water coil valve in cooling mode
(authorised by the Changeover thermostat), and then the "Cold" No.2 water coil valve; and it may adjust the fan
speeds.
When the temperature drops, the controller will calculate the heat requirement needed to keep this temperature
constant.
It will gradually adjust the rotation speed of the heat exchanger wheel (for Classic model only, and if conditions
permit), followed by the "Hot" or "Mixed" No.1 water coil valve in heating mode (authorised by the Changeover
thermostat), then the "Hot" No.2 water coil valve, and then the electric heater stage(s); and it may adjust the fan
speeds.
When managing at constant pressure, if opening the duct dampers is insufficient, operation of the electric heaters is
prohibited in order to prevent the heating elements from overheating. The authorised flow rate for the electric heaters
is half the nominal flow rate.
1.7 Management of fire faults
The optional fire fault contact triggers a close contact relay.
- One contact wired to an input on the controller so that the latter can signal the occurrence of a fire fault.
- A second contact wired to the fan 0-10V controls to shut them off immediately.
The other faults are described in the alarms table.
1.8 Managing night cooling
Several conditions must be met to activate night cooling:
1- Time range OR override via CMS.
2- Cooling requirement: The return air temperature must be above the cool night temperature setpoint (screen
w7).
3- The free-cooling difference (screen p17) must be sufficient: Treturn air – Tfresh air = 3°C (factory value).
4- The outdoor temperature must be above the "temperature low limit" (screen p17).
The night cooling setpoint is always based on the return air (regardless of the control mode).
For supply air temperature control, this is deactivated during night cooling periods.
Periodic restarts: If one of the night cooling activation conditions is not verified (outdoor temperature, free-cooling
difference, or cool night setpoint), the air handling unit switches to standby mode.
The fans will be restarted at the night cooling flow rate for 5 minutes each hour, and night cooling will be reactivated if
all the conditions are met.
1.9 Free cooling management
Several conditions must be met to activate free cooling:
1- Cooling requirement: The controlled temperature (return air or ambient) must be greater than the setpoint
temperature
2- The free-cooling difference (screen p17) must be sufficient: Treturn air – Tfresh air = 3°C (factory value).
3- The outdoor temperature must be above the "temperature low limit" (screen p17).

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During operation with a constant supply air temperature, free cooling is inactive as the heating coils are still in use
(except on the deadband).
When operating in free cooling mode, the supply air temperature is not controlled. It is important to configure an
outdoor temperature low limit (screen p17) which is sufficiently high to ensure no discomfort is caused.
1.10 Control unit for rotary heat exchanger
The control unit is a frequency transformer equipped with additional functions that are needed to ensure optimum
operation of a rotary heat exchanger.
Its number of revolutions and degree of efficiency are set by the controller so that the number of turns of the rotor is
proportional to the 0-10 V input signal.
1.10.1 Functions built into the control unit
Purging
The heat exchanger turns at the min. number of revolutions for 10 sec. every 30 minutes if
the input signal is below the threshold value, i.e. the rotor is stopped. The function can be
deactivated.
See the DIP transformer setting.
Rotation monitor
The rotation monitor (a magnet mounted on the rotor with a magnetic transmitter) switches
off the transformer and emits an alarm in case of a broken belt or similar incident. The control
unit is activated unless a pulse is received every 5 minutes. The function can be deactivated.
See the DIP transformer setting.
Threshold value
The control unit has a threshold value set to 0.1 V.
The rotor stops if the input signal is less than this value.
Reset
Via the reset button or in case of power loss.
Restart
Automatic start-up after power loss.
Controller inputs and outputs
This description concerns Classic and Classic RHE units.
For Vertical or Ceiling-Mounted units, the descriptions are in Italics.
Connector J1
G 24Vac
G0 Shared
Connector J2
B1 Pressure sensor B1 for return air (supply) filter fouling level
The pressure sensor monitors the level of blockage in the filter. If the filter is clogged,
the unit is shut off and the corresponding faults are displayed and the LED lights up. If
the filter is dirty, the corresponding fault is displayed and the LED lights up, but the unit
is not shut off.
B2 Flow rate sensor B2 for return air (supply) fan
The return air fan flow rate sensor compensates for filter fouling and ensures a
constant fan flow based on the setpoint.
A difference of up to 10% is possible between the flow rate indicated by the controller
and the actual unit flow rate. It is due to the accuracy limit of the sensor and to the air
handling unit's system effect.
B3 Flow rate sensor B3 for supply air (return) fan
The supply air fan flow rate sensor compensates for filter fouling and ensures a
constant fan flow based on the setpoint.
A difference of up to 10% is possible between the flow rate indicated by the controller
and the actual unit flow rate. It is due to the accuracy limit of the sensor and to the air
handling unit's system effect.
GND Shared
+VDC Power supply for enabled sensors

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Connector J3
B4 Supply air temperature sensor B4
The temperature of the air supplied to the room can be regulated based on the setpoint
(if selected) 20 seconds after the fans are turned on.
BC4 Common for B4
B5 Fresh air (return air) temperature sensor B5
The fresh air temperature sensor protects the heat exchanger from the risk of frost by
adjusting the stages of the electric pre-
heater (depending on unit configuration),
adjusting the bypass for the plate heat exchanger and indicating the fault (+ LED).
BC5 Common for B5
Connector J4
VG 24Vac
VG0 Shared
Y1 Coil 1 valve control (hot water, cold water or triac)
Y2 Rotary heat exchanger wheel speed control
Y3 Supply air fan speed control
Y4 Return air fan speed control
Connector J5
ID1 Fire sensor
If a fire fault is detected, the unit is shut off and the fault is signalled (+ LED)
ID2 Supply air fan monitoring
Feedback from the supply air fan alarms is used to monitor the overload protection
system on the motor's electronic commutator. If this feedback is not received, the unit is
shut off and the corresponding fault is signalled (+ LED)
ID3 Return air fan monitoring
Feedback from the return air fan alarms is used to monitor the overload protection
system on the motor's electronic commutator. If this feedback is not received, the unit is
shut off and the corresponding fault is signalled (+ LED)
ID4 Monitoring of electric pre-heater overheating thermostats
In case of a problem on the electric pre-heater, the electric heater is shut off and the
fault is signalled (+ LED)
ID5 Monitoring of electric heater overheating thermostats
In case of a problem on the electric heater, the electric heater is shut off and the fault is
signalled (+ LED)
ID6 Changeover thermostat Depending on the state of the thermostat (O = Cooling; C = Heating), the valve on the
mixed water coil is adjusted based on the temperature of the water in the supply circuit
and the regulation request.
ID7 Rotary heat exchanger monitoring
If a fault occurs on the rotary heat exchanger, it is shut off and the fault is signalled (+
LED)
ID8 Electric heater load shedding contact
When this contact is activated, the electric heaters cannot be started.
IDC1 Shared
Connector J6
B6 Heat exchanger fouling pressure or return air duct pressure sensor B6
The pressure sensor monitors the level of blockage in the heat exchanger. If the heat
exchanger is dirty, the corresponding fault is displayed and the LED lights up, but the
unit is not shut off.
The return air duct pressure sensor ensures a constant pressure in the duct based on
the setpoint. This function is incompatible with the heat recovery unit fouling pressure.
B7 Air quality sensor or intake duct pressure sensor
The air quality sensor is used to monitor the CO2 gas content (measurement range 0 to
2000 ppm) of the air in the room being monitored and to adjust the speed of the fans in
order to draw in more fresh air.
The intake duct pressure sensor ensures a constant pressure in the duct based on the

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setpoint. This function is incompatible with air quality regulation.
B8 Pressure sensor B8 for supply air (return) filter fouling level
The pressure sensor monitors the level of blockage in the filter. If the filter is clogged,
the unit is shut off and the corresponding faults are displayed and the LED lights up. If
the filter is dirty, the corresponding fault is displayed and the LED lights up, but the unit
is not shut off.
GND Shared
Connector J7
ID9 Remote control or Presence detection
Enables the unit to be remotely controlled or switched off if it is in On mode on the main
screen.
If a presence is detected, the air handling unit will automatically switch to Comfort flow
rate or to nominal Intake pressure. If this air handling unit was in Standby, it will also be
restarted.
ID10 Humidifier monitoring
In case of a problem on the humidifier, the fault is signalled (+ LED)
ID11 Pump 1 monitoring Monitors either the protection line or the flow presence via a flow-switch on the coil 1
pump, if requested. Conversely, if this feedback is not received, this fault is signalled (+
LED)
ID12 Pump 2 monitoring Monitors either the protection line or the flow presence via a flow-switch on the coil 2
pump if requested. Conversely, if this feedback is not received, this fault is signalled (+
LED)
IDC9 Shared
Connector J8
ID13 ----------
IDC13 Shared
ID14 ----------
Connector J12
C1 Shared
NO1 "Danger" fault relay The fault summary output contact opens when a "Danger" fault occurs and causes the
unit to shut off.
NO2 "Maintenance" fault relay
The fault summary output contact opens when a "Maintenance" fault occurs.
NO3 Control of damper (frost protection or insulation)
C1 Shared
Connector J13
C4 Shared
NO4 External generator control (boiler or heat pump module)
NO5 Control 1 for the electric heaters
NO6 Control 2 for the electric heaters, on/off stage control.
C4 Shared
Connector J14
C7 Shared
NO7 Power inverter operation authorisation (if Y1>0 then NO7=1, otherwise NO7=0).
C7 Shared
Connector J15
NO8 Humidifier operation authorisation
C8 Shared
NC8 ----------

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Connector J16
C9 Shared
NO9 Mixing damper 3-point servomotor opening
NO10 Mixing damper 3-point servomotor closing
NO11 ----------
C10 Shared
Connector J17
NO12 Coil 1 pump control
C12 Shared
NC12 ----------
Connector J18
NO13 Coil 2 pump control
C13 Shared
NC13 ----------
Connector J19
ID15 ----------
ID16 ----------
Connector J20
Y5 Coil 2 valve control (hot water, cold water or Pre-heating triac)
Y6 ----------
B9 Return air (fresh air) temperature sensor
The temperature of the air extracted from the room can be regulated based on the
setpoint (if selected) 20 seconds after the fans are turned on.
BC9 Shared
B10 Supply air remote temperature sensor
This sensor is used if a heating coil is used in the intake duct after the air handling unit.
The temperature of the air drawn into the room will be regulated based on the setpoint
(if selected), 20 seconds after the fans are turned on.
BC10 Shared
ID17 ----------
ID18 ----------
IDC17 Shared
Connector J21
NO14 ----------
C14 Shared
NC14 ----------
NO15 ----------
C15 Shared
NC15 ----------
Connector J22
C16 Shared
NO16 Plate heat exchanger bypass damper 3-point servomotor opening
NO17 Plate heat exchanger bypass damper 3-point servomotor closing
NO18 ----------
C16 Shared
Connector J24
+5 Vterm Outdoor terminal power supply
GND Shared
+5 Vref Power supply for enabled sensors
1.10.2 Other
Connector J9 Not used

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Connector J10
6-channel connection for a standard user HMI
Connector J11
Rx-/Tx- RS485 link for the pLAN network
Rx+/Tx+ RS485 link for the pLAN network
GND RS485 link for the pLAN network
Connector J23 Not used
1.10.3 Reversal depending on the unit type
Unit type CLASSIC RHE CLASSIC VERTICAL CEILING UNIT
Supply air temp.
sensor J3-B4 J3-B4 J3-B4 J3-B5
Return air temp.
sensor J20-B9 J3-B5 J3-B5 J3-B4
Fresh air temp.
sensor J3-B5 J20-B9 J20-B9 J20-B9
Qv supply air
pressure sensor J2-B3 J2-B3 J2-B2 J2-B2
Qv return air pressure
sensor J2-B2 J2-B2 J2-B3 J2-B3
Return air filter fouling
pressure sensor J2-B1 J6-B8 J6-B8 J6-B8
Supply air filter fouling
pressure sensor J6-B8 J2-B1 J2-B1 J2-B1
2Overview of the screens
2.1 Menu or Esc button
"Prg" button
U :01
00:00
00.0°c
Off
U:00 Indicates the unit's address
Indicates the request to switch the machine on or off
Indicates the presence of an hourly or annual time schedule and the request status
00.0°C Indicates the regulated temperature (ambient, return or supply air)
00:00 Time
Off Indicates the status of the unit: Off, Damper open, On, On after power failure,
Standby, Switched off by fault, Switched off by CMS, Post-ventilation, Manual Mode
Indicates "Pre-heating" operating mode
Indicates "Heating" operating mode
Indicates the "Cooling" operating mode
Indicates Fire alarm

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Indicates fan operation
"Prg" button
Menu
14. Access levels
15.Versions
∼
1. Setpoints
2. Machine
status
4. Machine parameters
To switch to another menu, press the or buttons to scroll through the available menus. The selected menu is
opposite the arrow and on a black background. To confirm your choice, simply press enter or.
The available menus are as follows:
-1. Setpoints
-2. Machine status
-4. Machine parameters
-5. Adjustment parameters
-6. Reading parameters
-7. Fault memory
-8. Test mode
-9. Time schedule
-11. Communication
-13. Alarms
-14. Access levels
-15. Versions
2.1.1 Access level selection menu
There are now three access levels:
-Level 1: User
-Level 2: Installer
-Level 3: Manufacturer
2.2 Setpoint menu
Comfort w0
Indication of the operating mode. Level 2 access
Fan flow rate
Supply air 01000m3/h
Comfort (or maximum) flow regulation setpoint for the supply air fan
Return air 01000m3/h
Comfort (or maximum) flow regulation setpoint for the return air fan
Eco
Supply air 00500m3/h
Supply air fan Eco flow regulation setpoint
Return air 00500m3/h
Return air fan Eco flow regulation setpoint
Comfort w1
Indication of the operating mode. Level 2 access
Duct pressure
Comfort supply air 100 Pa
Comfort pressure regulation setpoint for the Supply air duct
Eco supply air 050 Pa
Eco pressure regulation setpoint for the Supply air duct
Comfort return air 100 Pa
Comfort pressure control setpoint for the return air duct
Eco return air 050 Pa
Eco pressure control setpoint for the return air duct
Comfort w2
Indication of the operating mode for T° regulation in "Precision" mode Level 1 access
Return air 20.0°c
Comfort (Return or Ambient air) temperature control setpoint monitored (0 to 50.0°C)
Eco 15.0°c
Eco (Return or Ambient) temperature control setpoint monitored (0 to 50.0°C)

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Supply air
Upper limit 26.0°c
Upper limit for calculated Supply air T° setpoint
Lower limit 16.0°c
Lower limit for calculated Supply air T° setpoint
2.2.1 Supply air T° setpoint calculation in "Precision" mode
Fig.4
Fig.5
2.2.2 Supply air T° setpoint calculation in "Energy optimisation" mode
Return air or room temp. control
Fig.6
Heating:
Fig.7
lower limit
upper limit
°C
X2
X1
Return T°
Ambient T°
Setpoint
Calculated Supply air T°
setpoint
Setpoint
°C
setpoint
Cooling requirement (%)
0
100
50
band
Heating requirement (%)
band
Return T°
Ambient T°
Heating
authorised
Heating
setpoint
Comfort: 23°C
Eco: 18°C
Cooling authorised
Deadband
Cooling
setpoint
Comfort: 25°C
Eco: 27°C
°C
100
50
Heating requirement (%)

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Cooling:
Fig.8
w3
Level 2 access
Air quality
0800ppm
Air quality regulation setpoint
Maximum flow rate
1000m3/h
Maximum flow rate value of supply air fan for air quality control
Comfort w4
Indication of the operating mode for T° regulation in "Energy optimisation" mode Level 1 access
Return air Cooling 25.0°c
Comfort Cooling (Return or Ambient air) temperature control setpoint monitored (0 to 50.0°C)
Eco 27.0°c
Cooling Eco (Return or Ambient air) temperature control setpoint monitored (0 to 50.0°C)
Return air Heating 23.0°c
Heating Comfort (Return or Ambient air) temperature control setpoint monitored (0 to 50.0°C)
Eco 18.0°c
Heating Eco (Return or Ambient air) temperature control setpoint monitored (0 to 50.0°C)
Deadband
Indication of the control state for the monitored temperature
Comfort w5
Indication of the operating mode for T° regulation in "Energy optimisation" mode Level 1 access
Supply air Cooling 16.0°c
Cooling Comfort Supply air temperature control setpoint (Regulated T° ≠ Supply air) (0 to 50.0°C)
Eco 18.0°c
Cooling Eco Supply air temperature control setpoint (Regulated T° ≠ Supply air) (0 to 50.0°C)
Supply air Heating 26.0°c
Heating Comfort Supply air temperature control setpoint (Regulated T° ≠ Supply air) (0 to 50.0°C)
Eco 24.0°c
Heating Eco Supply air temperature control setpoint (Regulated T° ≠ Supply air) (0 to 50.0°C)
°C
Supply air temp.
Cooling requirement (%)
0
100
50
band
Cooling supply air setpoint
Comfort: 16°C
Eco: 18°C
neutral

EN-18
w6
Level 2 access
Pre-heating temperature 2.0°c
Electric pre-heater stages starting-up temperature in the duct (-5 to 50.0°C)
Morning heating 23.0°c
Control setpoint in mode "Morning heating" mode (0 to 50.0°C)
Frost protection 17.0°c
Unit reactivation setpoint in "Standby" mode (0 to 50.0°C)
Antifreeze prot. temp 2.0°c
Coil antifreeze protection temperature setpoint (0 to 50.0°C)
w7
Level 2 access
Cool night 17.0°c
Control setpoint in mode "Night cooling" mode (0 to 50.0°C)
Supply air 02000m3/h
Supply air fan flow regulation setpoint for night cooling
Return air 02000m3/h
Return air fan flow regulation setpoint for night cooling
w11
Level 3 access
HEX bypass -04.0°C
Heat exchanger frost risk detection temperature setpoint (-10.0 to 50.0°C)
Plates limit -20.0°C
Operating limit temperature for the plate heat exchanger (bypass open) (-20.0 to 50.0°C)
Wheel limit -25.0°c
Wheel heat exchanger operating limit temperature setpoint (-40.0 à 50.0°C)
w12
Min. th-Thune setpoint
Min. temperature setpoint value regulated via the room terminal.
15.0°c
Max. th-Thune setpoint
Max. temperature setpoint value regulated via the room terminal.
30.0°c
2.3 Machine parameters menu
This menu is Level 3 access
Fault type d1
Level 2 access This screen is used to configure the criticality of the faults managed by the regulating controller.
M=Maintenance D=Danger
If a fault is shown as "Danger" the unit will be shut off. If the fault is shown as "Maintenance", only an alarm
message will be given.
0
1
2
3
4
5
6
7
8
9
0x
D
M
D
M
M
D
D
D
D
Criticality of faults 1 to 9
1x
M
M
M
M
M
M
M
M
M
M
Criticality of faults 10 to 19
2x
M
D
D
M
M
M
M
D
D
Criticality of faults 20 to 29
List of faults:
Code
Description
Significance
A01
Supply air motor
Danger
A02
Supply air filter dirty
Maintenance
A03
Supply air filter clogged
Danger
A04
Sensor B1
Maintenance
A05
Return air filter dirty
Maintenance
A06
Return air filter clogged
Danger
A07
Frost on heat exchanger - Fresh air temperature check
Danger
A08
Heat recovery unit frosted – Clogging detection
Danger
A09
Return air motor
Danger
A10
Humidifier
Maintenance
A11
Rotary heat exchanger check
Maintenance
A12
Sensor B2
Maintenance
A13
Sensor B3
Maintenance