komfovent C5 Control Panel Air Handling Units Installation Guide

Installation Guide for komfovent models including: C5, C5 Control Panel Air Handling Units, Control Panel Air Handling Units, Air Handling Units, Handling Units, Units

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[PDF] VAV FUNCTIONS - Vecon

INSTALLATION MANUAL C5 / C6 / C6M. EN. Page 2. Page 3. UAB KOMFOVENT we reserve the right to make changes without prior notice. VAV-24-10. 3. CONTENT.

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VAV FUNCTIONS

INSTALLATION MANUAL C5 / C6 / C6M

CONTENT
INTRODUCTION .................................................................................................................................................................................. 4 1. PRESSURE SENSORS INSTALLATION .................................................................................................................................. 4 2. PIPES CONNECTION..................................................................................................................................................................... 5 3. ELECTRICAL CONNECTION TO THE AHU........................................................................................................................... 6 4. PRESSURE SENSORS SETTINGS............................................................................................................................................. 7
4.1. P2500 sensor.............................................................................................................................................................................. 7 4.2. SPM-50 or SPM-55 pressure sensors ................................................................................................................................. 8 5. VAV FUNCTION ACTIVATION AND SETTINGS...............................................................................................................10 5.1. C5 automation.........................................................................................................................................................................10 5.2. C6/C6M automation..............................................................................................................................................................14

UAB KOMFOVENT we reserve the right to make changes without prior notice

VAV-24-10

EN
INTRODUCTION
Variable Air Volume (hereafter called as ,,VAV") control mode is when air handling unit operates depending on changeable ventilation demands in separate premises. By those demands controlled ventilation system ensures ventilation only where is needed, therefore such air volume control mode signally reduces unit's exploitation costs, prolongs unit's life time, filters are less polluted.
After unit have been installed and commissioned it must be appropriately prepared according to hereunder description clauses to ensure correct VAV mode operation.

1. PRESSURE SENSORS INSTALLATION
For VAV function operation two duct pressure sensors are needed (they are supplied together with the air handling unit if VAV function is ordered) to be additionally installed with the unit: one on air supply duct, another on exhaust. Pressure sensors installation requirements: · sensors must be installed on the straight duct part with recommended minimum distance of two diago-
nals for rectangular duct cross-section or two diameters of the circular duct correspondingly; · it is recommended to install sensor vertically with air pipes directed downwards; · sensor is screwed directly to the duct (refer to figure 1). · Suitable pressure sensors: P2500, SPM-50 or SPM-55.

P2500
82 70

SPM-50 / SPM-55
88,20 6,18

13,63

64,30

4,20 2x

7 2x

13,73

6,28 Fig. 1. Pressure sensors dimensions

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VAV-24-10

2. PIPES CONNECTION
After pressure sensors have been installed in the specified place, air pipes by which air pressure is supplied to the sensors must be connected. To each sensor one air pipe must be connected in such a way: one pipe end directly to the sensor (see figure 2.), another pipe end is passed through the gasket of drilled hole in the duct and inserted inside the duct.
To the sensor which is installed on supply air duct, pipe is connected to the place marked by "+" sign, another connection marked by "-"sign remains opened. To the sensor intended for the exhaust air, pipe is connected conversely, i.e. to "-"sign, and sensor connection marked by "+" is left opened.

P2500

SPM-50
88

4 2

SPM-55
88

4 2

Fig. 2. Pressure sensors pipes connection
It is recommended to keep the length of pipes connecting sensors with ducts as short as possible.

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VAV-24-10

EN
3. ELECTRICAL CONNECTION TO THE AHU
When pressure sensors are mounted, they must be connected to the automation of the AHU. If pressure maintenance is needed in both airflows, two pressure sensors must be connected. Depending on the type of automation, electrical connections must be performed strictly according diagrams.
VAV function can also run with only one pressure sensor. In that case, pressure will be maintained in the airflow, where pressure sensor is connected and the fan of other airflow will follow in parallel (master-slave configuration). Pressure sensor is connected only to these automation terminals, which corresponds to the airflow where sensor is installed.
For sensor connection it is recommended to use 3×0,5mm2 shielded cable.

ETA
P2500 123

SUP
P2500 123

ETA
SPM-50 1 9 10

SUP
SPM-50 1 9 10

ETA

SUP

SPM-55

1 3 9 10

0..10V 31 +24V 32 GND 33 0..10V 34 +24V 35 GND 36 0..10V 31 +24V 32 GND 33 0..10V 34 +24V 35 GND 36 0..10V 31 +24V 32 GND 33 0..10V 34 +24V 35 GND 36

Fig. 3a. Pressure sensor connection diagram for C5 automation

SUP
P2500 321

ETA
P2500 321

SUP
SPM-50 1 9 10

ETA
SPM-50 1 9 10

SUP

ETA

SPM-55

1 3 9 10

0..10V 28 GND 29 +24V 30 0..10V 31 GND 32 +24V 33 0..10V 28 GND 29 +24V 30 0..10V 31 GND 32 +24V 33 0..10V 28 GND 29 +24V 30 0..10V 31 GND 32 +24V 33

Fig. 3b. Pressure sensor connection diagram for C6 automation

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VAV-24-10

SUP
P2500 321

ETA
P2500 321

SUP
SPM-50 1 9 10

ETA
SPM-50 1 9 10

SUP

ETA

SPM-55

1 3 9 10

0..10V 22 GND 23 +24V 24 0..10V 25 GND 26 +24V 27 0..10V 22 GND 23 +24V 24 0..10V 25 GND 26 +24V 27 0..10V 22 GND 23 +24V 24 0..10V 25 GND 26 +24V 27

C6M

C6M
Fig. 3c. Pressure sensor connection diagram for C6M automation

C6M

4. PRESSURE SENSORS SETTINGS
To ensure correct VAV mode operation after sensors installation such settings must be done.
4.1. P2500 sensor
1. After electric power has been supplied to the not switched on unit it is recommended to set each sensor to initial (zero) position. To do that ,,ZERO" button located inside the sensor must be pressed for about 8s (AHU must be stopped at the moment of initialization).

LED

Settings jumper "ZERO" button

Fig. 4a. P2500 pressure sensor

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VAV-24-10

2. Set jumpers located inside the sensor to required pressure range.

Pressure ranges:

0...100

0...200

0...300

0...500 0...1000 0...1500 0...2000 0...2500

3. Set constant air volume control mode (,,CAV"). 4. Switch on the air handling unit. 5. When the operating unit air flow will reach nominal value (maximum air flow during operation of the unit), voltage (DC) between contacts No. 2 and No. 3 of the pressure sensors (see Fig. 4a) must be measured by digital multimeter. The voltage must be in range of 3..9V (recommended 6V). If voltage is out of range other pressure range must be chosen with jumpers.

Sensor pressure range can be also set without referring to the descriptions presented above. In order to do that special device for measuring maximum pressure in the ducts must be used or according to the project data of the ventilation system.

4.2. SPM-50 or SPM-55 pressure sensors
1. After turning on the power supply, with the AHU turned off, set the sensor to the initial (zero) position. Place a jumper on the SET->0 connector and wait until the LED starts flashing rapidly (several times per second). Remove the jumper and wait for the LED blinking to slow down, indicating a successful zero-point calibration.

It is recommended to perform a zero-point calibration every 6 months.

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VAV-24-10

LED

SET->0

SW1.4

SW1.5

SW1.6

Fig. 4b. SPM-50 / SPM-55 pressure sensor

2. Set the desired sensor pressure range using micro switches SW1.4, SW1.5 and SW1.6.

Range 0...100 0...200 0...300 0...500 0...1000 0...2000 0...3000 0...5000

SW1.4 (PS1_RANGE) OFF ON OFF OFF OFF ON ON ON

SW1.5 (PS2_RANGE) OFF OFF ON OFF ON OFF ON ON

SW1.6 (PS3_RANGE) OFF OFF OFF ON ON ON OFF ON

3. Set the constant air volume control mode (CAV) in the AHU. 4. Turn on the AHU. 5. During operation of the unit, when the nominal air volume is reached (maximum air flow for unit operation), you must measure the DC voltage on the pressure sensors between pin 1 and 10 (see fig. 3) using a digital multimeter. If the measured voltage does not fall within the 3..9V range, another pressure range must be selected using micro switches. We recommend selecting the range so that the measured voltage is as close as possible to 6V.

The pressure range of the sensor can also be set without the points listed above. This can be performed by measuring the actual maximum pressure in the air ducts with a special device or by using the project data of the ventilation system.

UAB KOMFOVENT we reserve the right to make changes without prior notice

VAV-24-10

EN
5. VAV FUNCTION ACTIVATION AND SETTINGS
Before activating VAV function, air supply and exhaust devices of the ventilation system must be regulated and settled to supply air to all ventilated premises, i.e. all ducts, branches, dampers, etc. must be opened. On the control panel of the AHU following settings should be adjusted.

5.1. C5 automation
1. Enter the same pressure sensor range, that was set as stated in paragraph No. 4:

16:30

Settings

21,9° C 21,3° C
Temperature
ECONOMY 1

Overview

Scheduling

Air handling unit

Functions

Settings

Personalization

Air handling unit
Temperature control Flow control Time/Date Connectivity
Reset settings

5s.

Advanced flow control
VAV sensor range 500 Pa Nominal supply pressure 0 Pa Nominal exhaust pressure 0 Pa
Supply boost (+15%)
Exhaust boost (+15%)

Advanced flow control VAV sensor range

VAV sensor range

500 Pa

5000 Pa

Nominal supply pressure 0 Pa
500 Nominal exhaust pressure
0 Pa

Supply boost (+15%)
100 Pa Exhaust boost (+15%)

Fig. 5a. Pressure sensor range setting in the C5.1 control panel

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VAV-24-10

2. Enter the nominal pressure (Pa) in the supply and extract air ducts according to the project data of the ventilation system. This entered pressure will be the maximum pressure that you can use in the ventilation mode settings.
If the system pressure is unknown, perform VAV calibration according to the step 3.

Advanced flow control
VAV sensor range 500 Pa Nominal supply pressure 0 Pa Nominal extract pressure 0 Pa
Supply boost (+15%)
Exhaust boost (+15%)

Nominal supply pres... 450 Pa
0
0 Pa

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VAV-24-10

3. Activate VAV function and perform calibration (In case the system pressure is not specified in the project).

16:30

Settings

21,9° C 21,3° C
Temperature
ECONOMY 1

Overview

Scheduling

Air handling unit

Functions

Settings

Personalization

Air handling unit
Temperature control Flow control Time/Date Connectivity
Reset settings

Air handling unit Flow control
TemperatuCreAVcontrol Flow contrVoAl V Time/DateDCV
Connectivity
Reset settings

Air handling unit
Temperature control
Flow control Start
calibration? Time/Date
Connectivity

Reset settings
Fig. 5b. Flow control mode selection and VAV calibration in the C5.1 control panel
During VAV calibration AHU will run on maximum speed. Calibration duration is approximately 3 minutes. During this time do not change unit settings, do not open unit door or regulation dampers. After successful calibration AHU will be ready to run in VAV mode. In order to deactivate VAV function, select any other flow control mode (see figure 5b).

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VAV-24-10

VAV calibration is not required when the nominal system pressure is specified in the technical project of the ventilation system. In this case, you just need to enter the nominal pressure as described in step 2.

4. Change the air flow units to Pa.

Personalization
Language English
Flow units m3/h
Screen saver On
Panel lock Off
Touch sound Click

Flow units m³/h l/s m³/s Pa

UAB KOMFOVENT we reserve the right to make changes without prior notice

VAV-24-10

5.2. C6/C6M automation
Function can be activated by selecting VAV flow control mode. It is necessary to enter pressure sensor range, that was set as stated in paragraph No. 4:

16:30

OFF

ECO

AUTO

Menu Overview Scheduling Settings OFF
5s.

Advanced setings Temperature control Flow control Air quality control Control sequence Connectivity
1 / 2

Flow control
Flow control mode OFF

Flow control Flow control ... Flow control mode OFF CAV
VAV
DCV
OFF

Flow control
Flow control mode VAV
Max supply pressure 300 Pa
Max extract pressure 300 Pa

Flow control Max supply pressure
1000 Pa
300
0 Pa

Fig. 5c. Activation and settings of VAV flow control mode in the C6.1 control panel
After activation of VAV function, in the settings of the operation mode, air measuring units automatically will change to Pa. AHU will run maintaining requested pressure in the duct, where pressure sensor is connected. In order to deactivate VAV function, select any other flow control mode (see figure 5c).

UAB KOMFOVENT we reserve the right to make changes without prior notice

VAV-24-10

SERVICE AND SUPPORT
LITHUANIA UAB KOMFOVENT Phone: +370 5 200 8000 service@komfovent.com www.komfovent.com
FINLAND Komfovent Oy Muuntotie 1 C1 FI-01 510 Vantaa, Finland Phone: +358 20 730 6190 toimisto@komfovent.com www.komfovent.com
GERMANY Komfovent GmbH Konrad-Zuse-Str. 2a, 42551 Velbert, Deutschland Phone: +49 0 2051 6051180 info@komfovent.de www.komfovent.de
LATVIA SIA Komfovent Bukaisu iela 1, LV-1004 Riga, Latvia Phone: +371 24 66 4433 info.lv@komfovent.com www.komfovent.com
SWEDEN Komfovent AB Ögärdesvägen 12A 433 30 Partille, Sverige Phone: +46 31 487 752 info_se@komfovent.com www.komfovent.se
UNITED KINGDOM Komfovent Ltd Unit C1 The Waterfront Newburn Riverside Newcastle upon Tyne NE15 8NZ, UK Phone: +447983 299 165 steve.mulholland@komfovent.com www.komfovent.com

PARTNERS

AT J. PICHLER Gesellschaft m. b. H. www.pichlerluft.at

BE Ventilair group ACB Airconditioning

www.ventilairgroup.com www.acbairco.be

CZ REKUVENT s.r.o.

www.rekuvent.cz

CH WESCO AG SUDCLIMATAIR SA CLIMAIR GmbH

www.wesco.ch www.sudclimatair.ch www.climair.ch

DK Øland A/S

www.oeland.dk

EE BVT Partners

www.bvtpartners.ee