Johnson Controls 050, Установка, эксплуатация и обслуживание

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JOHNSON CONTROLS
95
SECTION 5 – SEQUENCE OF OPERATION
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
5
Sequence of Operation
When the building static pressure is 0.025" WC or
more above the “BUILDING PRESSURE SETPOINT”
the Simplicity Elite control sends a 2 to 10VDC sig-
nal to open the exhaust damper. The output is at the
“EXD+” and “EXD-“ terminals at the P14 connector.
When the exhaust damper position is equal to or great-
er than the “EXHAUST DAMPER POSITION FOR
EXHAUST FAN TO TURN ON”
the Simplicity Elite
control turns on the exhaust fan. The output is at the
“EXH” terminal of the P13 connector.
When the building static pressure is 0.025" WC or more
below the “BUILDING PRESSURE SETPOINT” the
Simplicity Elite control lowers the 2 to 10VDC output
to the exhaust damper to close the damper.
When the exhaust damper position is equal to or less
than the
“EXHAUST DAMPER POSITION FOR EX-
HAUST FAN TO TURN OFF” the Simplicity Elite
control turns on the exhaust fan.
The minimum run time is 20 seconds and the minimum
off time is 60 seconds.
Modulating Exhaust with a VFD
This exhaust option uses a Variable Frequency Drive
(VFD) and a barometric damper.
The following System Parameters must be programmed
through the Simplicity Elite control:
•
“POWER EXHAUST INSTALLED”
– must be
turned ON using Parameter 43 under the PRO-
GRAM key on the Simplicity Elite control board
or under the ECONOMIZER/EXHAUST tab in
the Simplicity PC software package.
• “BUILDING STATIC PRESSURE SENSOR IN-
STALLED” – must be turned ON using Parameter
85 under the PROGRAM key on the Simplicity
Elite control board or under the EQUIPMENT
INSTALLATION tab in the Simplicity PC soft-
ware package.
• “BUILDING PRESSURE SETPOINT” must be
programmed using Parameter 31 under the PRO-
GRAM key on the Simplicity Elite control board
or under the ECONOMIZER/EXHAUST tab in
the Simplicity PC software package.
• “EXHAUST VFD INSTALLED” must be turned
ON using Parameter 45 under the PROGRAM
key on the Simplicity Elite control board or under
the ECONOMIZER/EXHAUST tab in the Sim-
plicity PC software package.
Sequence of Operation
When the building static pressure is 0.025" WC or
more above the
“BUILDING PRESSURE SETPOINT”
the Simplicity Elite control sends a 2 to 10VDC signal
to Exhaust Fan VFD, the output is at the “EXD+” and
“EXD-“ terminals at the P14 connector, and enables
the VFD operation through the output at the “EXH”
terminal of the P13 connector. When the exhaust fan
first comes ON it will operate at the “Output Frequen-
cy Low Limit” that is programmed into the Exhaust
Van VFD, regardless of the voltage output from the
Simplicity Elite control.
When the building static pressure is 0.025" WC or more
below the
“BUILDING PRESSURE SETPOINT”
the
Simplicity Elite control lowers the 2 to 10VDC output
to the Exhaust Fan VFD. When the output is equal to
or below 2 volts, the Exhaust Fan VFD enable input is
removed.
PRE-OCCUPANCY PURGE
This feature allows the blower to come ON and the
economizer damper to open during the unoccupied pe-
riod to purge the air within the conditioned space.
In order to use this feature the following parameters
must be programmed:
• “PRE-OCCUPANCY PURGE ENABLE” – must
be enabled using the SYSTEM OPTIONS tab in
the Simplicity PC software package.
•
“PRE-OCCUPANCY PURGE TIME (hours of
day)” – must be programmed using the SYSTEM
OPTIONS tab in the Simplicity PC software
package.
• “PRE-OCCUPANCY PURGE TIME (minutes
of day)”
– must be programmed using the SYS-
TEM OPTIONS tab in the Simplicity PC software
package.