Komfovent C5.1 User manual

C5.1
EN Electrical installation and Operation Manual

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C5.1_22- 08 3
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Content
1. ELECTRICAL INSTALLATION MANUAL......................................................................................................................4
1.1. Air Handling Units Sections Connection.................................................................................................................4
1.2. Electric Power Supply Connection ...........................................................................................................................4
1.3. External Elements Connection...................................................................................................................................5
1.4. Temperature Sensors Installation..............................................................................................................................6
1.5. Requirements for the installation of the control panel ....................................................................................6
1.6. Control panel connection ............................................................................................................................................6
2. OPERATION MANUAL ........................................................................................................................................................7
2.1. Unit Control........................................................................................................................................................................7
2.2. Control panel indication...............................................................................................................................................7
2.3. Parameters overview .....................................................................................................................................................8
2.4. Operation modes selection.........................................................................................................................................8
2.5. Menu ....................................................................................................................................................................................9
2.5.1. Overview.................................................................................................................................................................9
2.5.1.1. Alarms........................................................................................................................................................9
2.5.1.2. Operation counters .............................................................................................................................9
2.5.1.3. Eciency status....................................................................................................................................9
2.5.1.4. Detailed information ..........................................................................................................................9
2.5.2. Functions..............................................................................................................................................................10
2.5.2.1. Air quality control ..............................................................................................................................10
2.5.2.2. Operation on demand ....................................................................................................................10
2.5.2.3. Outdoor compensated ventilation ............................................................................................11
2.5.2.4. Summer night cooling ....................................................................................................................11
2.5.2.5. Minimum temperature control ...................................................................................................11
2.5.2.6. Override function .............................................................................................................................12
2.5.2.7. Humidity control ...............................................................................................................................12
2.5.3. Scheduling...........................................................................................................................................................13
2.5.3.1. Operation program...........................................................................................................................13
2.5.4. Settings .................................................................................................................................................................13
2.5.3.2. Holidays.................................................................................................................................................13
2.5.4.1. Air handling unit settings ..............................................................................................................14
2.5.4.2. Personalization...................................................................................................................................16
2.6. Control of air handling units through a web browser.....................................................................................16
2.7. Additional control options.........................................................................................................................................17
2.7.1. Combined water coil control .........................................................................................................................17
2.7.2. Inverter direct evaporation cooler control ..............................................................................................17
2.7.3. Multi-level control of direct evaporation cooler ...................................................................................17
2.7.4. Reversal of direct evaporation coolers......................................................................................................17
2.8. Troubleshooting ............................................................................................................................................................18

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4
1. ELECTRICAL INSTALLATION MANUAL
Installation works can be performed only by the specialists that have required qualication. During
installation following requirements must be fullled.
It is recommended to lay control cables separately from power cables, or use
shielded cables. In such case it is necessary to earth cable shielding!
If AHU is used outdoors, all cables and wires, that are routed outside of the unit
must be additionally protected from UV damage; for example it can be mounted
inside of cable tray, corrugated tube or similar.
1.1. Air Handling Units Sections Connection
Afterunitpartshavebeenconnectedtogether(seeunitinstallationinstruction),unitsectionsconnecting
cables and wires are connected.
Connector connection is performed strictly according to numeration given in wir-
ing diagram, or adequate markings (see unit electric scheme).
When disconnecting unit sections, do not pull by connecting wires and cables!
1.2. Electric Power Supply Connection
If the air handling unit voltage is ~230 V; 50 Hz it is necessary to install the socket with grounding of
corresponding capacity (see electric diagram unit). If the voltage is ~400 V; 50 Hz, the cable of electrical
power supply is connected to the main switch, which is located on the unit’s outside wall. It is necessary
to connect earthing! Electrical power supply connection and other cable thicknesses are specied in the
wiring diagram.
Air handling units designed for 400 V AC supply voltage must be connected to
the stationary installation by solid cable. It is recommended to connect AHU to
the mains via automatic circuit breaker with 300 mA current leakage protection
(type B or B+).
Before connecting unit to the electrical power supply, it is necessary to check
whether earthing has been installed properly.

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1.3. External Elements Connection
The air handling unit is designed with external connection terminals which are located on the con-
troller box, inside the air handling unit. All external control elements are connected to the terminals.
1
2
1. „Ethernet“ computer network or internet connection
2. Control panel connection
1.3 a Picture. Controller with connection terminals
Total power of all external elements with 24V supply may not exceed 15W.
37 38 39 40 41 42 43 44 45 46 47 48
13 14 15 16 17 18 19 20 21 22
~24V
~24V
~24V
GND
0..10V
0..10V
0..10V
NO
NO
NO
NO
NO
C
C
FG1
DX
Indication
control
Cold water
mixing valve /
DX capacity control
Hot water
Cooling water
Heating water
pump
230V AC, 1A
pump 230V AC, 1A
mixing valve
actuator
Humidifier
Run
Alarm
Common
Common
TG3 TG2 TG1 S1S2
IN5 L
L
N
N
N
N
N
23 24
25 26 27 28 29 30 31 32 33 34 35 36
~24V
~24V
~24V
~24V
0..10V
0..10V
0..10V
0..10V
C
NTC
B5
B9 B8 B7 B6
MODBUS
RS485
connection
OVR control
Common
Return water
Supply air
temperature sensor
temperature sensor
Fire system
External stop
Control input
External control
B1
NTC
A
GND
IN4
IN3
IN2
IN1
B
N
N
N
N
12345678910 11 12
Water pump /
coil alarm
C
DX3 / Heating
DX2 / Cooling
DX1/ Start
Air damper
actuator
Supply air
pressure sensor
Exhaust air
pressure sensor
Air quality sensor
Humidity sensor
1.3 b Picture. External control elements connection

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1.4. Temperature Sensors Installation
The supply air temperature sensor B1 (1.4 a Picture) is mounted in the air duct in a projected place for it;
after cooler section (if provided). The minimal distance from the duct connection of the unit up to the sensor
should be not less than double diameter of the circular connection or a diagonal of rectangular connection.
The water temperature sensor B5 (1.4 b Picture) is mounted on the water pipe by screwing it into the
provided hole. The sensor must be thermo insulated!
Supply air temperature sensor B1 Water temperature sensor B5
1.4 a Picture 1.4 b Picture
B
D
≥ 2D
+–
B1
1.5. Requirements for the installation of the control panel
1. The control console should be installed in a room where the following conditions are ensured:
1.1. ambient temperature: 0 ºC ... 40 ºC;
1.2. relative humidity range: 20 % ... 80 %;
1.3. protection against dripping of water (IP X0).
2. Control panel connection is provided through a hole in the back or bottom side.
3. The panel can be mounted on a ush mounting box or in any other place just screwing two holes on
the fastening surface.
Do not use any other type or size screws but those that are packed together for
control panel mounting. Wrong screws may damage electronics board.
1.6. Control panel connection
The control panel is connected to the controller box (see Picture 1.3 a). The length of the cable for
connecting the panel with the unit may not exceed 150 m.
Yellow (A) () White
(+) RedGreen (B)
Yellow(A)
(+)Red
Green(B)
()White Yellow (A) () White
(+) RedGreen (B)
Yellow(A)
(+)Red
Green(B)
()White
1.6 Picture. Control panel connection
Control panel connection and other cable thicknesses are specied in the wiring
diagram!
Remove protective screen tape, before mounting front cover on the control panel!

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2.1 Picture. Control panel
2. OPERATION MANUAL
2.1. Unit Control
Air handling units control system ensures control of the physical
processes that are taking place inside the air handling unit.
Control system consists of:
• main controller module;
• circuit breakers and main switch;
• control panel1, which can be installed in the convenient place for
the user;
• pressure and temperature sensors.
Control panel (2.1 Picture) is designed for remote air handling unit
control, setting and display of controller parameters.
2.2. Control panel indication
ECONOMY 1
21,9 °C
21,3 °C
Temperature
16:30
Selection of
operation
modes
Menu
Indication of unit
operation modes and
functions
Main parameters
overview window
Switching between
overview windows
Time
Explanation of the displayed symbols
Air humidier
operation
Summer night cooling
mode
Weekly operation
mode
Holiday operation
mode
„Override“ mode
Alarm signal
Fan operation
Air ow increasing
by activated function
(see chapter Functions)
Air ow decreasing
by activated function
(see chapter Functions)
Energy recovery operation
Air heater operation
Air cooler operation
Supply air temperature
Extract air temperature
Supply air volume
Extract air volume
Supply air humidity
Extract air humidity
Extract (room)
air quality
1 Sold separately.

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2.3. Parameters overview
The main parameters of the unit are indicated in four main windows of the panel: temperatures
indication, air ow, air quality (humidity) and energy saving.
All other unit parameters are presented in the menu “Overview” (see 9 page).
ECONOMY 1
16:30
90%
18 kW
Energy saving
ECONOMY 1
60% RH
800 ppm
Air quality
16:30
ECONOMY 1
12500 m3/h
13100 m3/h
Air ow
16:30
ECONOMY 1
21,9 °C
21,3 °C
Temperature
16:30
2.4. Operation modes selection
Six operation modes are possible, one of them user can select directly from control panel main
window:
• Two Comfort and two Economy modes, for each of them the user can set air ow and temperature.
• Special mode allows the user not only to set air ow and temperature, but also to select blocking or
using heating, cooling and other functions.
• OFF mode completely turns o the unit.
Reset settings
ECONOMY 1
Supply air ow
1250 m3/h
Extract air ow
1250 m3/h
Setpoint
20 °C
Operation modes
COMFORT 1
COMFORT 2
ECONOMY 1
ECONOMY 1
SPECIAL
OFF
ECONOMY 1
21,9 °C
21,3 °C
Temperature
16:30
When AHU is stopped, by pressing modes button, it is possible to start the unit on the last active
ventilation mode.
When starting CF type AHU for the rst time, it will be needed to perform heat exchanger calibra-
tion, which is used for frost prevention function (See 2.5.1.3).
Temperature
ON?
OFF
Temperature
Start CF exchanger
calibration?
STARTING

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2.5. Menu
Menu of panel consists of the four points:
Functions Settings
Overview Scheduling
Menu
ECONOMY 1
21,9 °C
21,3 °C
Temperature
16:30
Alarms
Operation counters
Eciency status
Detailed information
Overview
2.5.1. Overview
Main air handling unit parameters are presented
in the main windows (Chapter 2.3). All other informa-
tion, relating to the operation of the unit, malfunctions
and eciency status is detailed in overview menu.
2.5.1.1. Alarms
This menu displays the notication of existing
faults.
After failure elimination (see chapter 2.8), mes-
sages are deleted by selecting “Delete”. By clicking on
„History“ can be viewed up to 50 registered alarms.
2.5.1.2. Operation counters
This menu displays operation time of the fans, the
consumed energy of the heater and how much energy
was recovered by the heat exchanger.
2.5.1.3. Eciency status
Menu for the heat exchanger eciency and en-
ergy recovery monitoring in real time.
Also in this menu it is possible to start CF exchang-
er calibration1, if it was not performed during rst start
of AHU. If calibration was successful and “Calibrated”
is shown – there is no need to start calibration again.
During calibration AHU will operate for about 10 min-
utes on dierent ventilation intensities while measur-
ing internal pressure. Thus do not open AHU doors, do
not regulate duct system and do not change any set-
tings during CF calibration. If you wish to stop calibra-
tion – turn o the unit from the control panel.
2.5.1.4. Detailed information
All temperature sensor readings, functioning of
separate air handling unit elements and other de-
tailed information is available in this menu.
1 Only in CF units.
Functions Settings
Overview Scheduling
Menu
Operation counters
Air heater
121 kWh
Supply fan
873 h
Exhaust fan
875 h
Recovered energy
1440 kWh
21A
Electric heater overheating
3B
VAV calibration fail
Alarms
Delete History
Detailed information
Supply air ow
350 m3/h
1 / 3
Supply air temperature
21,9 °C
Extract air temperature
22,1 °C
Outdoor air temperature
16,6 °C
Water temperature
25,3 °C
Calibrated
CF exchanger calibration
Efficiency status
83%
Energy saving
90%
Energy recovery
4,1 kW
Heat exchanger efficiency

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2.5.2. Functions
In this menu item, the user can activate and set
additional unit functions.
blank box: function is not activated
gray box: function is activated, but currently not opera-
ting
blue box: currently operating function
2.5.2.1. Air quality control
Air quality control is designed according to:
• CO2sensor1[0...2000 ppm];
• air quality sensor VOCq [0...100 %];
• air pollution sensor VOCp [0...100 %];
• relative humidity sensor [0...100 %];
• temperature sensor [0...50 ºC].
Depending on the type of the selected sensor, the value of the air quality
function to be maintained is set, and the air handling unit intensity will be ad-
justed according to that value. Ventilation intensity will be increased automati-
cally in the case of deviation from the set value and decreased again when it
is approached. For example, if the unit is designed with the CO2maintenance
function and is equipped with a CO2sensor, after setting value 800 ppm, this set
CO2level will be maintained by adjusting ventilation intensity, i.e. ventilation intensity will be increased if
the CO2level grows and will be decreased when it returns to the previous condition.
The function of air quality operates only if no other below function is active at the
same time:
• summer night cooling;
• min. temperature control;
• outdoor compensated ventilation.
2.5.2.2. Operation on demand
The air handling unit start-up function is designed to start the unit which
currently o, when one of the selected parameters has exceeded the critical
limit.
The function provided for the start-up of the unit according to:
• room CO2sensor;
• room air quality sensor VOCq;
• room air pollution sensor VOCp;
• room relative humidity sensor;
• room temperature sensor.
Operation on demand (start-up / shut-down) is performed by the
same sensor which is used in the control of the “Air quality func-
tion”.
A room sensor with the analogue output (0...10 V DC) should be
designed for this function.
1 Factory setting.
Functions
1 / 2
Air quality
control
Operation on
demand
Outdoor compen-
sated ventilation
Summer night
cooling
Minimum tempera-
ture control
Functions Settings
Overview Scheduling
Menu
Reset settings
Enable
Setpoint 1
1000 ppm
Setpoint 2
880 ppm
Mode 1
COMFORT 1
Mode 2
COMFORT 2
Air quality control
Reset settings
Enable
Setpoint
1000 ppm
Operation on demand