MI703.pdf

SEQUENCE OF OPERATIONS:

RUN CONDITIONS - SCHEDULED:

THE UNIT SHALL RUN ACCORDING TO THE OCCUPANCY SCHEDULE OF THE SPACES SERVED IN THE FOLLOWING MODES:

OCCUPIED MODE: THE UNIT SHALL MAINTAIN

• A 78°F (ADJ.) COOLING SETPOINT

• A 68°F (ADJ.) HEATING SETPOINT

ALARMS SHALL BE PROVIDED AS FOLLOWS:

• HIGH ZONE TEMP: IF THE ZONE TEMPERATURE IS GREATER THAN THE COOLING SETPOINT BY A USER DEFINABLE AMOUNT (ADJ.).

• LOW ZONE TEMP: IF THE ZONE TEMPERATURE IS LESS THAN THE HEATING SETPOINT BY A USER DEFINABLE AMOUNT (ADJ.).

ZONE SETPOINT ADJUST:

THE OCCUPANT SHALL BE ABLE TO ADJUST THE ZONE TEMPERATURE HEATING AND COOLING SETPOINTS AT THE ZONE SENSOR AS

FOLLOWS:

• HEATING 68°F (ADJ.) +/- 2°F (ADJ.)

• COOLING 78°F (ADJ.) +/- 2°F (ADJ.).

THE UNIT SHALL MAINTAIN ZONE SETPOINTS BY CONTROLLING THE AIRFLOW THROUGH THE FOLLOWING:

OCCUPIED:

• WHEN ZONE TEMPERATURE IS GREATER THAN ITS COOLING SETPOINT, THE ZONE DAMPER SHALL MODULATE BETWEEN THE

MINIMUM OCCUPIED AIRFLOW (ADJ.) AND THE MAXIMUM COOLING AIRFLOW (ADJ.) UNTIL THE ZONE IS SATISFIED.

• WHEN THE ZONE TEMPERATURE IS BETWEEN THE COOLING SETPOINT AND THE HEATING SETPOINT, THE ZONE DAMPER SHALL

MAINTAIN THE MINIMUM OCCUPIED AIRFLOW.

• WHEN ZONE TEMPERATURE IS LESS THAN ITS HEATING SETPOINT, THE CONTROLLER SHALL ENABLE HEATING TO MAINTAIN THE

ZONE TEMPERATURE AT ITS HEATING SETPOINT. ADDITIONALLY, THE ZONE DAMPER SHALL MODULATE BETWEEN THE MINIMUM OCCUPIED AIRFLOW (ADJ.) AND THE MAXIMUM HEATING AIRFLOW (ADJ.) UNTIL THE ZONE IS SATISFIED.

REHEATING COIL VALVE:

THE CONTROLLER SHALL MEASURE THE ZONE TEMPERATURE AND MODULATE THE REHEATING COIL VALVE OPEN ON DROPPING

TEMPERATURE TO MAINTAIN ITS HEATING SETPOINT.

WHEN COLD AIR IS AVAILABLE FROM THE AHU, THE ZONE DAMPER SHALL MODULATE TO THE MINIMUM OCCUPIED AIRFLOW (ADJ.). IF MORE HEAT IS REQUIRED, THE ZONE DAMPER SHALL MODULATE TO THE AUXILIARY HEATING AIRFLOW (ADJ.).

REHEATING - HIGH DISCHARGE AIR TEMPERATURE LIMIT:

THE CONTROLLER SHALL MEASURE THE DISCHARGE AIR TEMPERATURE AND LIMIT REHEATING IF THE DISCHARGE AIR TEMPERATURE IS

MORE THAN 105°F (ADJ.).

DISCHARGE AIR TEMPERATURE:

THE CONTROLLER SHALL MONITOR THE DISCHARGE AIR TEMPERATURE.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

• HIGH DISCHARGE AIR TEMP: IF THE DISCHARGE AIR TEMPERATURE IS GREATER THAN 110°F (ADJ.).

• LOW DISCHARGE AIR TEMP: IF THE DISCHARGE AIR TEMPERATURE IS LESS THAN 50°F (ADJ.).

HW

SASA

M T

T

NOTE: PROVIDE 2-WAY OR 3-WAY VALVE PER CONTROL VALVE SCHEDULE

AO 06

AI 01 AI 03

AI 02

AI 04

AI 05

DI 08

HWS

HWR

AI 06

EXHAUST FAN SHALL OPERATE 24/7.

EXHAUST FAN SPEED SHALL BE SET THROUGH BAS TO MAINTAIN SCHEDULED LOW-SPEED

EXHAUST AIRFLOW. UPON INPUT FROM CO OR NOX SENSOR, SETPOINTS BELOW, THE FAN WILL

BE COMMANDED TO RUN AT SCHEDULED HIGH-SPEED EXHAUST AIRFLOW.

WHEN ASSOCIATED LEVELS OF CO OR NOX FALL BELOW SETPOINT (ADJ.), THE REVERSE SHALL

RETURN.

EXHAUST FAN STATUS SHALL BE MONITORED BY BAS VIA CURRENT TRANSDUCER ON INCOMING

POWER LEG.

IF FAN STATUS DOES NOT MATCH COMMAND FROM BAS, AN ALARM SHALL BE GENERATED.

IF CO LEVELS IN APPARATUS BAY EXCEED 50 PPM, EXHAUST FAN WILL GO TO HIGH SPEED, THE VEHICLE EXHAUST SYSTEM WILL ACTIVATE, AND AN ALARM SHALL BE GENERATED AT THE BAS.

IF NOX LEVELS IN APPARATUS BAY EXCEED 25 PPM, EXHAUST FAN WILL GO TO HIGH SPEED, THE VEHICLE EXHAUST SYSTEM WILL ACTIVATE, AND AN ALARM SHALL BE GENERATED AT THE BAS.

ALARMS SHALL REQUIRE MANUAL RESET AT THE UNIT.

FAN CONTROLLER

EXHAUST FAN

DO 01

DI 01 CT

EP

SEQUENCE OF OPERATION:

DI 09SPACE CARBON MONOXIDE

DI 09SPACE NITROGEN OXIDE

CO

NOX

EMERGENCY HVAC SHUTDOWN SOO:

1. CONTROLS CONTRACTOR TO PROVIDE MUSHROOM BOTTOM TYPE

SWITCHES WHERE INDICATED ON M SHEETS. SWITCHES SHALL

INCLUDE COVER TO PREVENT ACCIDENTAL ACTIVATION.

2. PRESSING THE SWITCH SHALL CAUSE ALL HVAC FANS TO

DEENERGIZE AND ALL OUTDOOR AIR DAMPERS TO CLOSE WITHIN 30

SECONDS, REGARDLESS OF HAND-OFF-ON POSITION OF STARTER OR

VFD. EXCEPTION FOR KITCHEN EXHAUST FAN, VEHICLE EXHAUST FAN

AND BOTH MAKEUP AIR UNITS

3. CLEARLY LABEL SHUTDOWN SWITCHES "EMERGENCY HVAC

SHUTDOWN". SWITCHES SHALL BE BLUE IN COLOR.

S-3

DI

GAS USE MONITORING:

1. PLUMBING CONTRACTOR TO PROVIDE GAS METER AS INDICATED ON

THE PLUMBING SHEETS. GAS METER SHALL BE COORDINATED AND

INSTALLED IN COORDINATION WITH OTHER TRADES.

2. REPORT THE FOLLOWING DATA TO THE DDC AND

DISPLAY IT GRAPHICALLY AT THE OPERATOR'S

WORKSTATION: DAILY GAS CONSUMED, MONTHLY

GAS CONSUMED, ANNUAL GAS CONSUMED.

3. TREND THE FOLLOWING: DAILY CONSUMPTION,

ANNUAL CONSUMPTION.

GM-1

AI

GM-2

AI

GAS METER

POWER METER (TYPICAL, REFER

TO ELECTRICAL FOR QUANTITIES

AND LOCATIONS)

POWER USE MONITORING:

1. ELECTRICAL CONTRACTOR TO PROVIDE POWER METERS. POWER METERS

SHALL BE INSTALLED BY ELECTRICAL CONTRACTOR IN COORDINATION WITH

ELECTRICAL EQUIPMENT. COORDINATE PROVISION OF METERS AMONG THE

VARIOUS TRADES.

2. REPORT THE FOLLOWING DATA TO THE DDC AND DISPLAY IT

GRAPHICALLY AT THE OPERATOR'S WORKSTATION: INSTANTANEOUS KW

DEMAND, HIGHEST KW DEMAND FOR THE PAST MONTH, AVERAGE

HOURLY KWH, AVERAGE DAILY KWH, TOTAL ANNUAL KWH. THE INTERVAL

OF EACH OF THESE ITEMS SHALL BE CONFIGURABLE BY THE USER.

3. TREND THE FOLLOWING: HOURLY CONSUMPTION, DAILY CONSUMPTION,

ANNUAL CONSUMPTION.

PM-1

AI

PM-2

AI

PM-3

AI

WATER USE MONITORING:

1. PLUMBING CONTRACTOR TO PROVIDE WATER METER AS INDICATED

ON THE PLUMBING SHEETS. WATER METER SHALL BE COORDINATED

BY GENERAL CONTRACTOR AND INSTALLED IN COORDINATION WITH

OTHER TRADES.

2. REPORT THE FOLLOWING DATA TO THE DDC AND DISPLAY IT

GRAPHICALLY AT THE OPERATOR'S WORKSTATION: DAILY WATER

CONSUMED, MONTHLY WATER CONSUMED, ANNUAL WATER

CONSUMED.

3. TREND THE FOLLOWING: DAILY CONSUMPTION, ANNUAL

CONSUMPTION.

WM-1

AI

WM-2

AI

WATER METER

US Army Corps of Engineers ®

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SCALE: N.T.S.

A9

VAV TERMINAL UNITS CONTROL DIAGRAM

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2. THIS POINT IS ONLY FOR VAVS WITH REHEAT PER SCHEDULE.

L - LAST POSITION

C - CLOSED

O - OPEN

1. FAILURE MODE

NOTES:

TOTALS 0 1 2 5 12 10 4

LOW ZONE TEMP 18 X 1-2

LOW DISCHARGE AIR TEMP 17 X

HIGH ZONE TEMP 16 X

HIGH DISCHARGE AIR TEMP 15 X

SCHEDULE 14

HEATING MODE 13 X X

HEATING SETPOINT 12 X X

DAT HEATING LIMIT 11

COOLING SETPOINT 10 X X

AIRFLOW SETPOINT 09 X X

ZONE OVERRIDE 08 X X X

ZONE DAMPER 07 X X X L

REHEATING VALVE 06 X X X C

ZONE TEMPERATURE 05 X X X

ZONE SETPOINT ADJUST 04 X X

DISCHARGE AIR TEMP 03 X X X

DAMPER POSITION 02 X X

AIRFLOW 01 X X X

DO DI AO AI AV TREND ALARM

POINT NAME POINT NUMBER

HARDWARE POINTS SOFTWARE POINTS FAILURE

POSITION

NOTES

VAV SYSTEM POINTS LIST

SCALE: N.T.S.

L8

2-SPEED EXHAUST FAN (EF-5) CONTROL SCHEMATIC

2. SCHEDULES AND ROUTINES SHALL RESIDE ON THE BAS.

1. EXHAUST FAN WILL BE INTERLOCKED TO WITH HWDH-1.

NOTES:

TOTALS 2 3 0 0 2 2 3

FAN RUNTIME EXCEEDED 08 X

FAN IN HAND 07 X

FAN FAILURE 06 X

FAN SPEED 05 X

NO2 SENSOR INPUT 04 X

CO SENSOR INPUT 03 X

FAN START/STOP 02 X X X

FAN STATUS 01 X X X

DO DI AO AI AV TREND ALARM

POINT NAME POINT NUMBER

HARDWARE POINTS SOFTWARE POINTS

NOTES

2-SPEED EXHAUST FAN (EF-5) POINT LIST