Assortment / System Description

Room pressurization and fume hood control
Pressurized room, temperature control
21
204 | 275 A6V10866237_en--_b_08
Description Object Type Default value
Extract air VAV balancing state
▶ Indicates the state of progress of the
balancing process for this VAV box. It is
written by the controller in response to
the user-entered balance command. It
persists through a power cycle.
1:Initial
2:Balancing
3:Balanced
VavExBalSta MCnfVal 1:Initial
Extract air VAV balancing mode
▶ Air flow value set by the air balancer
person to select the airflowsetpoint
value used when the balancing state =
balancing.
1:Maximum ventilation
2:Minimum ventilation
3:Smoke
VavExBalMod MCnfVal 1:Maximum
ventilation
Extract air VAV duct area
▶ Duct cross-sectional area, user-
entered or calculated by controller using
the duct shape, dimension A and
dimension B values.
0...1 [m
2
], 0.0...10.76 [ft
2
]
VavExDuctArea ACnfVal 0.050 [m
2
]
0.540 [ft
2
]
Extract air VAV flow coefficient
▶ The value used to calibrate span of
airflow measurement. The value of calc
flow coefficient is written to this object
upon the Calibrate command.
0...2
VavExFlCoef ACnfVal 0.780
Exhaust calibration