7. BALANCING THE UNIT (
7.5 B
P
ALANCING
ROCEDURE
L Set VB60W control speed.
NOTE: According to the installation, the magnehelic gauge tubing can be
connected to exhaust OR supply air flow. The arrow on screen will
shown which airflow will have to be set.
M Set RECIRC speed.
Connect the
magnehelic gauge to
Fresh airflow taps.
The balancing procedure is completed.
NOTE: The adjusted airflow values are stored within the unit, so, if needed, any VT9W main control can be used to adjust
the unit speeds and balance the unit again. If a power failure occurs, the unit will keep these setting values. To change the
setting values, go to step G and follow the procedure, the new values will replace the previous ones.
'
)
CONT
D
(
'
)
CONT
D
MODE
OR
TURBO
Press on MODE key to raise
the value.
Press on TURBO key to lower
the value.
Ajust the airflow until the
reading on magnehelic gauge
reaches the desired CFM value.
MODE
OR
TURBO
Press on MODE key to raise
the value.
Press on TURBO key to lower
the value.
Ajust the airflow until the
reading on magnehelic gauge
reaches the desired CFM value.
Check the magnehelic
gauge along with the unit
balancing chart until the
desired airflow is reached
Check the magnehelic
gauge along with the unit
balancing chart until the
desired airflow is reached
24
Plug magnehelic gauge
tubing to STALE airflow.
Plug magnehelic gauge
tubing to FRESH airflow.
Write selected
airflow percentage
on label affixed on
the unit for future
Press % HUM key
reference
to accept chosen
percentage.
Write selected
airflow percentage
% HUM
on label affixed on
the unit for future
Press % HUM key to
reference
accept chosen percentage
and exit the menu OR
wait 60 seconds.
% HUM