Cylon CBT-STAT Podręcznik użytkownika - Strona 18

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Cylon CBT-STAT Podręcznik użytkownika

BALANCING PROCEDURE - CBV-2U4-3T(-N)

Zeroing Airflow sensor
The
CBV-2U4-3T(-N)
comes from the factory with the airflow sensor zeroed. To compensate for possible air
leakage around the damper, users are able to zero the airflow sensor in the field. To zero the airflow sensor,
users will need to do the following:
1.
Drive damper to the closed position by enabling DampCloseMan (P4L01).
2.
After damper has fully shut, set TABPriAirZero
After 10 seconds the TABPriAirZero
be zeroed.
Be sure to disable DampCloseMan
Airflow Calibration Procedure
This section provides information on the Airflow sensor calibration procedure of the
Flow/K
using both
and
Using
Flow/K
1.
Set KfactSelect
2.
Set Max cfm flow at TABPriAirMaxStpt (P3L06).
3.
Set to DamperMaxMan
4.
Allow airflow PriAirFlowCV
airflow balances out.
5.
Enter balancers airflow reading in CFM in MeasuredFlow/K
6.
Again, allow airflow PriAirFlowCV
modulate until airflow balances.
7.
Repeat as necessary.
8.
Calculated K factor can be read at
9.
Set DampMaxMan
2 point balancing with minimum flow can also be achieved by doing the following:
10.
After balancing system to the maximum air flow, Set min cfm flow at TABPriDbandStpt
11.
Set DampMinMan
12.
Allow airflow PriAirFlowCV
13.
Enter balancers airflow reading in CFM in MeasuredFlow/K
14.
Again, allow airflow PriAirFlowCV
15.
Calculated K factor can be read at KFactorOut
16.
Set DampMinMan
Using
K Select
1.
Set KfactSelect
2.
Set MeasuredFlow/K
3.
Calculated flow can be read at PriAirFLowCV
18
(P4L03)
will be automatically set back to off and the airflow sensor will now
(P4L01)
when finished with this step.
K select
VAV Flow Calculation
in the
(P4L09)
to
.
TRUE
(P4L13)
to
TRUE
(P4L06)
to reach TABPriAirMaxStpt (P3L06). Let damper modulate until
(P4L06)
KFactorOut(P4L05)
(P4L13)
to
when complete.
FALSE
(P4L14)
to
TRUE
(P4L06)
to reach TABPriDbandStpt
(P4L06)
(P4L14)
to
when complete.
FALSE
(P4L09)
to
.
FALSE
(P4L10)
to unit manufacturer K-FACTOR
© Cylon Controls Ltd.
(P4L03)
to on.
firmware block
.
(P4L10)
FactorSelect.
to reach TABPriAirMaxStpt (P3L06). Let damper
(P3L07)
(P4L10)
to reach TABPriDbandStpt
(P4L05)
(P4L06)
CBV-2U4-3T
airflow sensor
(P3L07)
(P3L07)
MAN0120US rev 16