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Note: If the VAV boxes have already been
assigned to groups and these groups are
separate thermal zones, then the
balancing can be done on a group basis.
5.Select a group to balance and give that
group a flow override Drive MAX
command.
Note: If the VAV boxes have not been
placed in a group, each individual UCM
can be overridden to Drive MAX in the
UCM Setup Menu. However, this will be
more time consuming.
6.Adjust each VAV box maximum flow
set point required for its zone using the
UCM set points menu.
7 . After balancing a group/box, return that
group/box flow override to AUTO.
— Continue to the next group/box
repeating steps 6 through 8 until each
unit is delivering the correct CFM.
8.Upon completion of the VAV air
balancing:
— Remove all overrides.
— Initiate a recalibrate command.
VAV-SVX01B-EN
Air Balancing and
Water Balancing
Water Balancing
Each VAV UCM can have its hot water
valve overridden to drive fully OPEN (2-
position and proportional). This can be
done in the UCM setup menu and can
be used to assist in water balancing.
1. Log on to the UCM with EveryWare
software.
2.Select a VAV box to balance, and drive
its hot water valve open (max hot water
override).
3.Using hydraulic pressure gauges,
measure the flow across the high and
low ports. Convert this data from a
pressure differential to gallons per
minute (GPM).
4.Adjust the circuit setter until it is within
design specifications.
5.Once achieved, lock the circuit setter in
place. Mark the position with a
permanent indicator.
6.Remove all gauges and software
overrides.
7 . Initiate a recalibrate command.
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