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INSTALLATION NOTES:
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EXHAUST FAN
O PROVIDE WIRING CONTACTS PER ELECTRICAL DRAWING
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O1 IF FSD DAMPER ACTUATORS END SWITCH SHALL BE
WIRED TO EXHAUST FAN STARTER INTERLOCK RELAY.
The DDC system uses a differential pressure switch to monitor
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BY DIVISION 16.
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WIRE SAFETY CIRCUIT SO EXHAUST FAN WILL OPERATE
ONLY IF FSD ARE OPEN.
the exhaust fan status and shall provide and alarm if the
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fan fails during the occupied mode.
BY OTHERS MECHANICAL ROOM.
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A01SSD O INTERLOCK ASSOCIATED EXHAUST FANS
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Interlock all assoclated Fire /Smoke dampers with the exhaust
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C264 +/ -2.5 141 0518 INTERLOCK ASSOCIATED FIRE /SMOKE DAMPERS
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fan. Dampers shall open when fan is running and close when
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fan Is shut down manually, through the interlock or if the
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fan falls.
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If exhaust fan is associated with an air handling unit (AHU)
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FSD
the exhaust fan shall be interlocked with the AHU starter to
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run when the AHU is energized and shutdown when the
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AHU de- energizes.
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EXHAUST FAN
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DETAIL MF LOCATION: MECHANICAL PENTHOUSE CP -1 ❑ po1HSP Smith
EXHAUST FAN 2
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DETAIL MC
Reid, Inc.
600 West Hillsboro, Suite 300
The constant volume air handling unit consists of a mixed air section with outdoor air
Deerfield Beach, FL 33441
(954) 421 -1260
damper, pre - filter, final filter, chilled water cooling coil and supply fan with VFD. The
FAX: (954) 421 -1466
unit is DDC controlled using electric actuation.
www.ssr- inc.com
FamCerd&ad°n•ES-00M7
�D-i. PE -Sam
JohnEMwldr PE -3=
B&h.d&&e+ud PE .65701
The air handling unit is scheduled for automatic operation.
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The air handling unit operates in Occupied, Unoccupied, and Safety modes as follows
(All suggested set points and settings are adjustable.):
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The fan 'starts or continues to run and the unit is controlled as follows:
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The outside air damper is open and flow monitor station activated.
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The VFD be controlled to maintain a constant volume of air from the fan measured by
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the Air Flow Measuring station at the fan inlet flow sensor.
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The cooling coil valve modulates to maintain the supply air temperature set point.
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Interlocked exhaust fans will run when the AHU is running and will shut down when the AHU stops.
All fire smoke dampers in the exhaust system shall be interlocked with the exhaust fan. End
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switches, shall be wired back to the fan starter to only allow the fan to start once the
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dampers ;are ope i .
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Fire /Smoke dampers are interlocked to open when the AHU is energized. End switches on
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the Fire /Smoke dampers will be wired back to the VFD to only allow the AHU to start
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once the dampers are open.
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Alarms
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An alarm will be generated if the fan status does not match the start /stop of the fan
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(if fan is commanded on, but status is off, an alarm will be generated). And alarm will be
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generated if either of the filter DPS's are activated signifying a dirty filter.
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High supply air temperature or return air humidity shall generate an alarm.
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Safety
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Smoke detectors in the supply and return air streams shall be interlocked with the fire alarm system.
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The fire' alarm shall de- energize the supply fan upon
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activation. All other dampers associated exhaust fans and valves position to their normal is closed or
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off position after thefan is de- energized.
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A differential pressure switch is installed across the supply fan. The DDC system uses this
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switch to confirm the fan is in the desired state (i.e. on or off) and generates an alarm if
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status deviates from DDC start /stop control.
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A high static pressure switch with manual reset is installed and wired into the VFD safety
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circuit to shut down the fan If the pressure in the duct becomes too high.
comm. No: 11087.00
Date: 01/18/12
AIR HANDLER
1
Drawn:
Revised:
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