CAV/VAV conversion kit Installation instructions Document in original language | 211528 · A002 GB
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Contents 1 2 3 4 5 General information .........................................1 Warnings.......................................................1 Transmitter installation .....................................1 3.1 DIP-swtiches .........................................1 VAV control....................................................3 4.1 Installation and Wiring .............................3 4.2 Configuration ........................................4 CAV control...........................................
General information | 1 General information The CAV/VAV duct pressure control kit is used for CAV/VAV control of SAVE residential units with touch screen control panel. The kit includes: differential pressure transmitter (PDT12S25), installation instructions, cable set, tubes and labels. Important To use CAV control, IRIS damper or a similar device with a known K-Factor have to be purchased separately. It is not included in this package.
2 | Transmitter installation DIP-swtich Parameter Key pattern Parameter setting 1 Output function OFF 0...10 V ON 4...
VAV control | 4 VAV control 4.1 Installation and Wiring The pressure transmitters need to be mounted in the supply and extract air ducts and connected according to Fig. 1 VAV Installation and Wiring. Note: For optimal measuring results, measuring points with turbulent air flow should be avoided. Preferably, measuring should be performed at a distance of 2 duct diameters before bends and branching and at 6 duct diameters after bends and branching.
4 | VAV control 4.2 Configuration Input signal configuration 1. Go to Service menu 2. Enter password (default 1111) 3. Configure supply air transmitter input. Go to Input menu. Select UNIVERSAL tab. Select the analog input to which supply air VAV/CAV transmitter is connected. Example if it is connected to UI2 on the connection board, then select UNIVERSAL INPUT 2. Select signal type as Analog input and select Supply Air Fan Control (SAFC) from the input type list. 4.
CAV control | 5 CAV control 5.1 Installation and Wiring The pressure transmitters need to be mounted in the supply and extract air ducts and connected according to Fig. 2 CAV installation and wiring. Note: For optimal measuring results, measuring points with turbulent air flow should be avoided. Preferably, measuring should be performed at a distance of 2 duct diameters before bends and branching and at 6 duct diameters after bends and branching. Supply air duct 1.
6 | CAV control Table 3 Symbol description Symbol Description Supply air Extract air CB RAHU 5.2 Connection board on the unit SAVE residential air handling unit K Iris damper or a similar device with known Kfactor 1 Push-button 2 Status LEDs Configuration Input signal configuration 1. Go to Service menu 2. Enter password (default 1111) 3. Configure supply air transmitter input. Go to Input menu. Select UNIVERSAL tab. Select the analog input to which supply air VAV/CAV transmitter is connected.
CAV control | Configure Airflow Level Settings 1. Go to Service menu then enter Control Regulation and select Fan Control. Change measurement units if necessary. 2. Enter Airflow Level Settings menu. 3. Set Supply Airflow and Extract Airflow for all levels: MAXIMUM LEVEL, HIGH LEVEL, NORMAL LEVEL, LOW LEVEL, MINIMUM LEVEL.
Phone +370 340 60165 Fax +370 340 60166 www.systemair.com CAV/VAV conversion kit · Installation instructions · 211528 · en_GB · 2018-08-27 · A002 Systemair UAB Linų st.
