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FDSP0004

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KANSAS CITY, MO.

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ARCHITECTS, P.A.

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GOULD EVANS

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SERVICES CONTRACTOR

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PROGRAM MANAGEMENT

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PROJECT NO.

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WFO / NEXRAD PROGRAM

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DESCRIPTION OF REVISION

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FDI

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APPROVED

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APPROVED

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ACTR/COTR

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BY

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CHECKED

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BY

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PREPARED

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DATE

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NO.

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SPECIAL ENGINEERING PROGRAM OFFICE (SEPO)

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WEATHER FORECAST OFFICE

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REV.

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CLIN.

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DWG. NO.

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SIZE

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ACOTR./COTR.

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ENGR/PROJ. MGR.

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SUP'V. ENGR.

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CHECKED

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DRAWN

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HO

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HO01

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HVAC

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TEMPERATURE CONTROLS

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AUSTIN/S. ANTONIO, TX. (NEW BRAUNFELS)

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J MCDONALD

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%%UEQUIPMENT SEQUENCE OF CONTROLS

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%%USPACE TEMPERATURE CONTROLS

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HEATER

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ELECTRIC DUCT

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MS

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SD

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MS

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SD

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AIR FAN

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SUPPLY

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FILTER

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VALVE

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SOLENOID

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STEAM

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%%UTEMPERATURE CONTROL LEGEND

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MOTOR STARTER

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INPUT OR OUTPUT

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TEMPERATURE CONTROL PANEL

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ROOM HUMIDITY SENSOR

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ROOM TEMPERATURE SENSOR

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SD

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DP

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MS

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HL

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CONTROL WIRING

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FS

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DUCT TEMPERATURE SENSOR

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AIRFLOW SWITCH

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DIFFERENTIAL PRESSURE SWITCH

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DUCT SMOKE DETECTOR

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HUMIDITY HIGH LIMIT SENSOR

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DUCT HUMIDITY SENSOR

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MOTOR OPERATED DAMPER

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THE ALARM AND INDICATION LIGHTS PANEL SHALL BE PROVIDED WITH

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SUPPLY

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AIR

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AIR

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OUTSIDE

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AIR

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RETURN

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DP

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ROOM

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OPERATIONS

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THE CONTRACTOR SHALL BE RESPONSIBLE FOR DETAILING THE HVAC

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CONTROL SYSTEM, POWER WIRING, LOW VOLTAGE CONTROL WIRING, AND

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CONNECTIONS NECESSARY TO PROVIDE A COMPLETE AND OPERABLE

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TEMPERATURE AND HUMIDITY CONTROL SYSTEM BASED ON THE SCHEMATIC

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ALL 24 VOLT CONTROL WIRING SHALL BE FURNISHED AND INSTALLED BY

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TEMPERATURE CONTROL CONTRACTOR AND SHALL BE SHIELDED CLASS 2

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PLENUM RATED CABLE.

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AND SEQUENCE OF OPERATION AS SHOWN ON THIS DRAWING.

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SD

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%%UTEMPERATURE CONTROL NOTES

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DP

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(HU-1)

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HUMIDIFIER

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FS

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HL

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SUPPLY

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AIR FAN

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COOLING

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COIL

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SPACE HUMIDITY

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FILTER DIFF PRESSURE

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FAN DIFF PRESSURE

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R/A HUMIDITY

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M/A TEMPERATURE

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O/A HUMIDITY

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R/A TEMPERATURE

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S/A TEMPERATURE

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O/A TEMPERATURE

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HUMIDIFIER

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AHU START/STOP

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COOLING

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SUPPLY FAN STATUS

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DIRTY FILTERS

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O/A, R/A DAMPERS

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%%UINPUTS

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%%UOUTPUTS

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UNIT

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CONDENSING

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COIL

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COOLING

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DP

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SD

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FILTER

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DP

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RETURN

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AIR

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OUTSIDE

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AIR

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AIR

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SUPPLY

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CONDENSING

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UNIT

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%%UAHU-1, AHU-2 CONTROLS

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%%UAHU-3 CONTROLS

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%%UOUTPUTS

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%%UINPUTS

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%%UAHU-3 CONTROLS

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O/A, R/A DAMPERS

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DIRTY FILTERS

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SUPPLY FAN STATUS

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COOLING

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AHU START/STOP

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O/A TEMPERATURE

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M/A TEMPERATURE

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S/A TEMPERATURE

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FAN DIFF PRESSURE

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%%UAHU-1, AHU-2 CONTROLS

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(EDH-10)

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(EDH-1)

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ELECTRIC DUCT HEATER

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SPACE TEMPERATURE

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SPACE TEMPERATURE

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ELECTRIC DUCT HEATER

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%%UINPUTS

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SUPPLY

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AIR

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AIR

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SUPPLY

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COMMERCIAL/GENERATOR

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AUTOMATIC

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SWITCH

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(ATS)

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POWER STATUS

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TRANSFER

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THE FOLLOWING IDENTIFICATION AND INDICATOR LIGHTS (FOR EACH AHU):

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SUPPLY FAN OPERATING

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SUPPLY FAN FAILURE

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CONDENSING UNIT OPERATING

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CONDENSING UNIT FAILURE

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FILTER CHANGE REQUIRED

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GREEN

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RED

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GREEN

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RED

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RED

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INDICATOR LIGHT (LOCATED IN

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ALARM/INDICATION LIGHTS PANEL)

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%%UAIR HANDLING UNIT (AHU-1,2)

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%%UELECTRIC HEATERS

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THE ELECTRIC HEATERS SHALL HAVE SELF CONTAINED CONTROLS. THE THERMOSTATS

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SHALL BE SET TO MAINTAIN A SPACE TEMPERATURE OF 65%%DF.

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EMERGENCY OPERATION MODE.

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SWITCH (ATS), THE RCB WILL ALLOW ONLY ONE PAC UNIT TO RUN IN THE

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THE NORMAL OPERATION MODE. UPON A SIGNAL FROM THE AUTOMATIC TRANSFER

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A HIGH SPACE TEMPERATURE SIGNAL. BOTH PAC UNITS WILL BE ABLE TO RUN IN

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THERMOSTAT IS ALSO CONNECTED TO THE RCB, TO ENERGIZE THE LAG PAC UNIT ON

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DE-ENERGIZE THE HUMIDIFIER.

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BE SET BACK TO 55%%DF. A SIGNAL FROM THE HIGH-LIMIT HUMIDITY SENSOR SHALL

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65%%DF. WHEN THE HUMIDIFIER IS DE-ENERGIZED, SUPPLY AIR TEMPERATURE SHALL

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THE HUMIDIFIER IS ENERGIZED, THE SUPPLY AIR TEMPERATURE SHALL BE RESET TO

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OPERATION. THE SPACE HUMIDITY SENSOR SHALL MODULATE THE HUMIDIFIER. WHEN

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INTERLOCKED TO OPEN WHEN THE CORRESPONDING AIR HANDLING UNIT IS IN

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HUMIDIFIER UPON LOSS OF AIRFLOW. THE STEAM SOLENOID VALVES SHALL BE

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SUPPLY AIR FAN IS IN OPERATION. AN AIR FLOW SWITCH SHALL DE-ENERGIZE THE

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THE HUMIDIFIER SHALL NOT BE ALLOWED TO OPERATE UNLESS THE AIR HANDLING UNIT

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%%UHUMIDIFIER (HU-1)

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THE TRANSFER FAN SHALL RUN CONTINUOUSLY.

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%%UTRANSFER FAN (TF-2)

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THE EXHAUST FAN SHALL RUN CONTINUOUSLY.

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%%UEXHAUST FAN (EF-1)

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SEQUENCING OF THE UNITS TO MAINTAIN EQUAL RUN TIME. A HIGH TEMPERATURE

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CONTROLS AND ARE CONNECTED TO THE RCB. THE RCB CONTROLS THE LEAD/LAG

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BOX (RCB) ARE GOVERNMENT FURNISHED EQUIPMENT. BOTH PAC UNITS HAVE INTERNAL

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THE PAC UNITS (PAC-1,2), CONDENSING UNITS (C-1,2) AND THE REMOTE CONTROL

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%%UPACKAGED AIR CONDITIONING UNITS (PAC-1,2)

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HEATING IS REQUIRED.

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A SPACE TEMPERATURE SENSOR SHALL MODULATE THE ELECTRIC DUCT HEATER WHEN

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%%UELECTRIC DUCT HEATERS (EDH)

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%%UAIR HANDLING UNIT (AHU-3)

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(NO-NORMALLY OPEN)

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(NC-NORMALLY CLOSED)

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CONDENSING UNIT STATUS

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CONDENSING UNIT SAFETIES

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CONDENSING UNIT STATUS

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(NC)

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(NO)

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(NC)

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(NO)

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ALL 120 VOLT POWER WIRING TO CONTROL PANELS AND MOTOR OPERATED

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DAMPERS SHALL BE FURNISHED AND INSTALLED BY THE ELECTRICAL

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CONTRACTOR (SEE DWG E05).

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ALL 24 VOLT CONTROL WIRING UNDER THE FLOOR SHALL BE INSTALLED

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IN CONDUITS (SEE DWG E06).

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SET ROOM TEMPERATURE AT 72%%DF, AND SET ROOM HUMIDITY AT

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HUMIDIFIER STATUS

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HUMIDIFIER ALARM

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HUMIDIFIER ALARM

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RED

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AIR HANDLING UNITS 1 & 2 (AHU-1,2) SERVE THE OPERATIONS AREA AND ARE OPERATED

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ON A 24-HOUR SCHEDULE. ONLY ONE AIR HANDLING UNIT SHALL OPERATE, AND THE

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NON-OPERATING UNIT SHALL SERVE AS A BACKUP. THE BACK-UP UNIT SHALL BE STARTED

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AUTOMATICALLY UPON FAILURE OF THE OTHER UNIT. AIR HANDLING UNITS 1 & 2 (AHU-1,2)

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SHALL BE PROGRAMMED TO ALTERNATE TO MAINTAIN EQUAL RUN TIME. THE SUPPLY AIR

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FAN SHALL RUN CONTINUOUSLY. A SUPPLY AIR TEMPERATURE SENSOR SHALL MODULATE

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THE CONDENSING UNIT (ACU) TO MAINTAIN 55%%DF DISCHARGE AIR TEMPERATURE. THE

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SUPPLY AIR TEMPERATURE SHALL BE RESET TO SATISFY THE ROOM TEMPERATURE SENSOR

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WITH THE MAXIMUM COOLING DEMAND. AN OUTSIDE AIR ECONOMIZER CYCLE SHALL BE

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PROVIDED WITH ENTHALPY CONTROL. A MIXED AIR TEMPERATURE SENSOR SHALL MODULATE

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THE OUTSIDE AND RETURN AIR DAMPERS DURING THE ECONOMIZER CYCLE. MINIMUM

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OUTSIDE AIR SHALL BE PROVIDED WHEN THE UNIT IS NOT IN THE ECONOMIZER CYCLE.

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HUMIDITY SHALL BE CONTROLLED BY A SPACE HUMIDITY SENSOR. HEATING WILL BE

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PROVIDED BY INDIVIDUAL ELECTRIC DUCT HEATERS (EDH). SMOKE DETECTORS, IN THE

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SUPPLY AND RETURN AIR DUCTWORK, SHALL DE-ENERGIZE THE SUPPLY AIR FAN UPON

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SENSING SMOKE. UPON LOSS OF COMMERCIAL POWER, THE AIR HANDLING UNIT SHALL BE

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PROGRAMMED FOR A TIMED DELAY RESTART. ELECTRIC DUCT HEATER EDH-2 SHALL NOT

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OPERATE ON EMERGENCY POWER.

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AIR HANDLING UNIT 3 (AHU-3) SERVES THE ADMINISTRATION AREA AND OPERATES ON

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AN 8-HOUR SCHEDULE. PROGRAM NIGHT SETBACK. THE OPERATION OF AIR HANDLING

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UNIT 3 (AHU-3) IS SIMILAR TO AIR HANDLING UNITS 1 & 2 (AHU-1,2) WITH THE

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FOLLOWING EXCEPTIONS: (1) OUTSIDE AIR ECONOMIZER CYCLE IS CONTROLLED BY

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OUTSIDE AIR TEMPERATURE; AND (2) NO HUMIDITY CONTROL. AHU-3, ACU-3 AND

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ASSOCIATED ELECTRIC DUCT HEATERS SHALL NOT OPERATE ON EMERGENCY POWER.

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UPON RESTORATION OF COMMERCIAL POWER, AHU-3, ACU-3 AND ASSOCIATED ELECTRIC

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DUCT HEATERS SHALL RETURN TO NORMAL OPERATING MODE. THE AIR HANDLING UNIT

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SHALL BE PROGRAMMED FOR A TIMED DELAY RESTART.

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S. MINO

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D.E. FULCHER

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BLR/TLS

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DRH/RAR

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SJL

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REV NOTES FOR HERMATIC/SEMI-HERMATIC COMPRESSOR

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50% RELATIVE HUMIDITY FOR ALL AREAS SERVED BY AHU-1 AND AHU-2.

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SET ROOM TEMPERATURE AT 78%%DF SUMMER AND 65%%DF WINTER FOR ALL

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AREAS SERVED BY AHU-3.

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SET ALTERNATING TIME OF AHU-1 & 2, AND PAC-1 & 2 FOR 84

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HOUR INTERVALS.

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SJL

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DEF

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BLR/TLS

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RAR/RAR

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ADDED NOTE #7

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JAF

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REVISED PER AS-BUILT CONDITIONS

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DEF

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TMS/TLS

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JTS/JTS

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02/07/95 15:50 JAF 12/1=1' KCHOM053

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DEF

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ERP/RRW

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JTS/JTS

File details come from the government source that posted it. Updated .