Fans; Pressure Transducer - Dantherm DanX XWPRS Series User Manual

4. COMMISSIONING

4.2 Fans

To commission the fans for the first time, the following actions have to be taken:
•
Check that the four measuring probes below the pressure transmitter are blanked.
•
Check if the transportation brackets have been removed.
•
Check by hand if the fan wheel is turning freely.
•
Check that all dampers in the duct system are open.
•
Check if the duct system is clean and not blocked by any parts.
•
Start up the fan for a few seconds and check if the fan wheel turns in the right direction
(see arrow on fan casing). If this is not the case stop the unit, switch off the main current
and change two phases of the fan on the terminal strip.

4.2.1 Pressure transducer

The pressure transducers for the supply and exhaust fan are installed in a separate box below
the electrical connection box for the fan motors. The transducer factory settings should
normally not be changed.
After installing the unit and before the first start, it is recommended to zero-set the trans-ducer.
After the power supply is established (green LED on) press the zero-set button (SW3) and the
yellow LED will flash for 3 seconds. After this the pressure transducer is reset.
There are two LED lamps on the printed circuit board, which are indicating the following:
If the yellow LED is ON when the fans are stopped, please check if the tubes to the fans are
bended or pressed. The yellow LED must be OFF when the fans are stopped to have the
pressure transducer work properly!
LED
Green
Yellow
On Flashing
OK Pressure outside set range
>50Pa Zero setting in progress
19
1
SW 2
SW 1
Off
No power supply
<50Pa