SWEMATWIN FOR BALANCING VENTILATION
Manual ES20150505 Rev. 2
6(7)
Pepparvägen 27
123 56 Farsta, SWEDEN
Tel: +46 (0)8 940090
www.swema.se
www.swema.com
6. TROUBLESHOOTING
·The modems are connected, (including the repeaters, if they are used).The small LED
indicating “Connected”flash green on the modems, if not the LED “Mode”is green.
Switch the modems OFF and ON again. During the measuring the LEDs “Connected”
and “RS232-Tx/Rx”flash intermittently.
·If the LED “RS232-Tx/Rx”lights red, the measuring data from the reference, is not sent
by the receiver to the master instrument. Switch the modems OFF and ON again. If the
LED continues to lights red
·The switches on the BlueTooth modems are set to Baud Rate 4800 (switches 1 and 3
should be set to the left and switch 2 to the right). (Picture 4)
·”H/W Flow Control”switch is set to OFF (switch 4 to the left). Picture 6)
7. BALANCING A VENTILATION SYSTEM ACCORDING TO THE PROPORTIONALITY
METHOD
Choose the valve where the reference instrument will be measuring. The flow in the chosen
valve is the nominal reference flow. The flows in the other valves (measurement points)
are adjusted with the Master instrument. These nominal flows are called nominal Master
flows.
Calculate for each Master measurement point:
If the modems still do not connect to each other, after
following the steps above, the modems have to be
paired once again. Refer to the manual delivered with
the BlueTooth modems for pairing). Probably it is
necessary to pair again either the modems marked as
“1”or the modems marked as “2”. Please check the
modems that have to be paired again.
the Reference measurement should be displayed. There
is no connection between the master and the reference
instrument, see picture 5
If so please check as follows:
·The modems are switched ON and their batteries are
charged otherwise the modems cannot communicate
with each other.
·The modems are connected to the instruments and
the antennas are attached to them
·The settings in the menu 2 of the master and menu 2
of the reference instrument are according to 4a
above. When the reference instrument is a
SwemaMan 8 there is not a menu 2 to check on the
reference.
