13.54_M700 - MECHANICAL CONTROLS.pdf

ROOM THERMOSTAT/SENSOR

WALL MOUNTED

48" [1200mm] AFF.

AIR TERMINAL UNIT CONTROLS

TU

RHC

HWS

HWR

V-1

REHEAT

COIL

AIR

TERMINAL

UNIT

AIR

FLOW

TE

ATU

CONTROLLER

PC

TE

ROOM TEMPERATURE (°F)

SP

VAV BOX CONTROL SEQUENCE

W/DEADBAND

FE

A

IR

F

LO

W

(C F

M

100%

HEATING

MINIMUM

R

EH

EAT FLO

W

VA

V

AI

R

F

LO

W

A. SET POINTS SHALL BE SET AS FOLLOWS:

COOLING 75°F (ADJ)

HEATING 70°F (ADJ)

DEADBAND OF 5°F BETWEEN HEATING AND COOLING SET POINTS WILL BE MAINTAINED.

B. COOLING - ON AN INCREASE IN SPACE TEMPERATURE MODULATE DAMPER OPEN TO

INCREASE AIRFLOW AND MAINTAIN SPACE TEMPERATURE. ON A FURTHER INCREASE IN

SPACE TEMPERATURE MAINTAIN DAMPER AT MAX COOLING CFM.

C. COOLING - ON A DECREASE IN SPACE TEMPERATURE MODULATE DAMPER CLOSED TO

MINIMUM.

D. REHEAT - ON DECREASE IN SPACE TEMPERATURE THE VAV DAMPER WILL CLOSE TO

MINIMUM POSITION. MODULATE THE REHEAT COIL CONTROL VALVE V-1 TO MAINTAIN

SPACE HEATING SETPOINT.

E. HEATING - ON FURTHER DROP IN SPACE TEMPERATURE VALVE V-1 WILL MODULATE TO

MAINTAIN SET POINT AND DAMPER WILL MODULATE TO HEATING AIRFLOW.

F. HEATING - ON AN INCREASE IN SPACE TEMPERATURE MODULATE DAMPER CLOSED TO

MINIMUM POSITION AND MODULATE THE CONTROL VALVE TO CLOSED POSITION.

TU

AIR

TERMINAL

UNIT

AIR

FLOW

ATU

CONTROLLER

CAV BOX CONTROL SEQUENCE

1. CONTROL DAMPER POSITION SHALL REMAIN CONSTANT AIRFLOW AT

MAXIMUM CFM SETPOINT.

2. EACH AIR TERMINAL UNIT SHALL INCLUDE AN AIRFLOW SENSOR FOR

CALCULATING CFM AND A DISCHARGE AIR TEMPERATURE SENSOR.

3. EXTEND 24 VOLT POWER TO THE TERMINAL BOX CONTROLLER FROM

AN EXISITNG OR NEW DDC CONTROL PANEL.

4. DURING UNOCCUPIED MODE, BOX DAMPER SHALL CLOSE COMPLETELY.

CONTROL

DAMPER

FT

C H

R

C H

S

T-2

T-1

PUMP

R-X PMP-C

PMP-S

ZONE

CONTROL

VALVE

PUMP SEQUENCE OF OPERATION

1. BAS SHALL MONITOR PRESSURE IN CHILLED WATER SUPPLY MAIN ASSOCIATED WITH NEW PUMP. PRESSURE TRANSMITTER P-1 SHALL BE MONITORED DURING BALANCING OF FAN COIL UNITS AND SHALL DETERMINE REFERENCE

PRESSURE FOR PUMP CONTROL.

2. IF ALL CHILLED WATER CONTROL VALVES ON THIS LOOP ARE LESS THAN 90% OPEN, PUMP SHALL REMAIN OFF AND

THE ZONE CONTROL VALVE (ZC) SHALL BE OPEN.

3. WHEN ANY CHILLED WATER CONTROL VALVE ON THIS LOOP REACHES 90% OPEN POSITION, THE PUMP SHALL START AND RUN AT MINIMUM SPEED. ZONE CONTROL VALVE (ZC) SHALL CLOSE. WHEN ZONE CONTROL VALVE ZC IS CLOSED, PUMP SPEED SHALL MODULATE TO MAINTAIN PRESSURE DETERMINED AT BALANCING.

4. WHEN ALL CONTROL VALVES ARE 70% OPEN OR LESS THE ZONE CONTROL VLAVE SHALL OPEN AND THE PUMP SHALL

STOP.

5. WHEN PUMP IS AT MINIMUM SPEED AND THE PRESSURE TRANSMITTER IS 5 PSI OR GREATER ABOVE REFERENCE PRESSURE THE ZONE CONTROL VALVE SHALL OPEN AND PUMP SHALL TURN OFF UNLESS A CONTROL VALVE IS 90%

OPEN OR GREATER.

6. PROVIDE COMMAND CONTROL, SPEED CONTROL, AND STATUS INDICATION TO THE BAS SYSTEM GRAPHICS.

7. ALARM BAS IF P-1 IS BELOW PRESSURE DETERMINED AT BALANCING AND PUMP IS OFF.

8. PROVIDE TRENDING IN THE BAS FOR PUMP STATUS AND SPEED, PRESSURE, SUPPLY TEMPERATURE AND RETURN

TEMPERATURE.

PTTT

TT

P-1

ZC

RA

FILTER IN RETURN

GRILLE

FAN

COOLING COIL

TT

T-2

V-1

CHR

CHS

ROOM TEMPERATURE SENSOR, WALL MOUNTED 46" AFF.

T-1

TTFCU BACNET

CONTROLLER

COMMUNICATIONS

BUS TO DDC PANEL

24V POWER SUPPLY

FROM DDC PANEL

FAN COIL SEQUENCE OF OPERATION (COOLING ONLY)

1. FAN COIL UNIT SHALL FUNCTION BASED ON THE FOLLOWING SEQUENCE DURING OCCUPIED MODE AS ESTABLISHED BY THE BAS. INITIAL OCCUPANCY SCHEDULE SHALL BE 7AM-5PM (ADJ.). CONTROL VALVE SHALL BE PRESSURE INDEPENDENT TYPE VALVE WITH LINEAR ACTUATION. COOLING MODE IS WHEN OUTSIDE AIR TEMPERATURE IS ABOVE

55 DEG F (ADJ.).

2. DURING OCCUPIED MODE, FAN SHALL RUN CONTINUOUSLY AT MINIMUM SPEED EQUAL TO CFM INDICATED IN FAN COIL

UNIT SCHEDULE, EXCEPT DURING SECOND STAGE COOLING OPERATION AS DESCRIBED BELOW.

3. FIRST STAGE OF COOLING: FAN SHALL RUN AT MINIMUM SPEED. CONTROL VALVE SHALL MODULATE TO MAINTAIN A 75 DEG F (ADJ.) SPACE TEMPERATURE. WHEN SPACE TEMPERATURE REACHES 77 DEG F (ADJ.) THE SECOND STAGE OF

COOLING SHALL BE INITIATED.

4. SECOND STAGE OF COOLING: INCREASE THE FAN SPEED TO MAXIMUM CFM INDICATED IN FAN COIL UNIT SUBMITTAL.

CONTINUE TO MODULATE THE CHILLED WATER CONTROL VALVE TO MAINTAIN A 75 DEG F (ADJ.) SPACE TEMPERATURE.

MAINTAIN MAXIMUM CFM UNTIL SPACE TEMPERATURE RETURNS TO SET POINT. AT SPACE TEMPERATURE SET POINT

FAN SHALL RETURN TO FIRST STAGE OF COOLING MODE.

5. WHENEVER T-1 IS BELOW SETPOINT, V-1 SHALL BE CLOSED.

6. PROVIDE STATUS INDICATION FOR FAN AND CONTROL VALVE.

7. AN ALARM SHALL BE GENERATED AT THE ECC IF SPACE TEMPERATURE RISES 3 DEG. F (ADJ.) ABOVE SETPOINT, OR IF

COMMAND AND STATUS DO NOT MATCH. DELAY ALARM FOR 60 MINUTES AFTER OCCUPIED MODE BEGINS.

8. PROVIDE TRENDING FOR DISCHARGE AIR TEMPERATURE SENSOR T-2

9. OCCUPANT CONTROL OF SETPOINT VIA WALL THERMOSTAT SHALL BE LIMITED TO PLUS OR MINUS 2 DEGREES OF

SETPOINT (ADJ.) THROUGH THE BAS.

10. DURING UNOCCUPIED MODE, V-1 SHALL REMAIN CLOSED AND FAN SHALL REMAIN OFF IF T-1 IS BELOW UNOCCUPIED

SETPOINT. IF T-1 RISES ABOVE UNOCCUPIED SETPOINT, FAN SHALL START AND REMAIN AT MINIMUM SPEED AND V-1 SHALL MODULATE TO MAINTAIN 80 DEG F (ADJ.) SPACE TEMPERATURE, UNTIL T-1 IS BELOW UNOCCUPIED SETPOINT.

11. OCCUPIED MODE SETPOINT SHALL BE 75 DEG F (ADJ.). UNOCCUPIED MODE SHALL BE 80 DEG F (ADJ.).

12. SAFETY: DRAIN PAN OVERFLOW SWITCH SHALL CLOSE V-1 AND ALARM BAS.

FS

DRAIN PAN

FLOAT SWITCH

FAN COIL SEQUENCE OF OPERATION (COOLING ONLY WITH DDC STEAM CONVECTOR CONTROL)

RA

FILTER IN RETURN

GRILLE

FAN

COOLING COIL

TT

T-2

V-1

CHR

CHS

ROOM TEMPERATURE SENSOR, WALL MOUNTED 46" AFF.

T-1

TTFCU BACNET

CONTROLLER

COMMUNICATIONS

BUS TO DDC PANEL

24V POWER SUPPLY

FROM DDC PANEL

FS

DRAIN PAN

FLOAT SWITCH

STEAM CONVECTOR

(EXISTING TO REMAIN)

LPS(5)

LPR

V-2 (EXIST.

TO REMAIN)

1. FAN COIL UNIT SHALL FUNCTION BASED ON THE FOLLOWING SEQUENCE DURING OCCUPIED MODE AS ESTABLISHED BY THE BAS. INITIAL OCCUPANCY SCHEDULE SHALL BE 7AM-5PM (ADJ.). CONTROL VALVE SHALL BE PRESSURE INDEPENDENT TYPE VALVE WITH LINEAR ACTUATION. COOLING MODE IS WHEN OUTSIDE AIR TEMPERATURE IS ABOVE 55 DEG F (ADJ.). HEATING MODE IS WHEN OUTSIDE AIR TEMPERATURE IS AT OR BELOW 55 DEG F (ADJ.).

2. DURING OCCUPIED MODE, FAN SHALL RUN CONTINUOUSLY AT MINIMUM SPEED EQUAL TO CFM INDICATED IN FAN COIL

UNIT SCHEDULE, EXCEPT DURING SECOND STAGE COOLING OPERATION AS DESCRIBED BELOW.

3. FIRST STAGE OF COOLING: FAN SHALL RUN AT MINIMUM SPEED. CHILLED WATER CONTROL VALVE V-1 SHALL MODULATE TO MAINTAIN A 72 DEG F (ADJ.) SPACE TEMPERATURE. WHEN SPACE TEMPERATURE REACHES 75 DEG F

(ADJ.) THE SECOND STAGE OF COOLING SHALL BE INITIATED.

4. SECOND STAGE OF COOLING: INCREASE THE FAN SPEED TO MAXIMUM CFM INDICATED IN FAN COIL UNIT SUBMITTAL.

CONTINUE TO MODULATE THE CHILLED WATER CONTROL VALVE V-1 TO MAINTAIN A 72 DEG F (ADJ.) SPACE TEMPERATURE. MAINTAIN MAXIMUM CFM UNTIL SPACE TEMPERATURE RETURNS TO SET POINT. AT SPACE

TEMPERATURE SET POINT FAN SHALL RETURN TO FIRST STAGE OF COOLING MODE.

5. COOLING MODE: WHENEVER T-1 IS BELOW SETPOINT, V-1 SHALL BE CLOSED AND FAN SHALL BE OFF.

6. HEATING MODE: WHENEVER T-1 IS BELOW SETPOINT CONVECTOR CONTROL VALVE V-2 SHALL MODULATE TO MAINTAIN

A 70 DEG F (ADJ.) SPACE TEMPERATURE.

7. HEATING MODE: WHENEVER T-1 IS ABOVE SETPOINT, V-2 SHALL BE CLOSED.

8. PROVIDE STATUS INDICATION FOR FAN AND CONTROL VALVES.

9. AN ALARM SHALL BE GENERATED AT THE ECC IF SPACE TEMPERATURE RISES/FALLS 3 DEG. F (ADJ.) ABOVE OR BELOW

SETPOINT, OR IF COMMAND AND STATUS DO NOT MATCH. DELAY ALARM FOR 60 MINUTES AFTER OCCUPIED MODE

BEGINS.

10. PROVIDE TRENDING FOR DISCHARGE AIR TEMPERATURE SENSOR T-2

11. OCCUPANT CONTROL OF SETPOINT VIA WALL THERMOSTAT SHALL BE LIMITED TO PLUS OR MINUS 2 DEGREES OF

SETPOINT (ADJ.) THROUGH THE BAS.

12. DURING UNOCCUPIED MODE, V-1 & V-2 SHALL REMAIN CLOSED AND FAN SHALL REMAIN OFF T-1 SETPOINT SHALL RESET

TO 80 DEG F FOR COOLING AND 68 DEG F FOR HEATING MODES. IF T-1 RISES ABOVE UNOCCUPIED COOLING SETPOINT, FAN SHALL START AND REMAIN AT MINIMUM SPEED AND V-1 SHALL MODULATE TO MAINTAIN 80 DEG F (ADJ.) SPACE TEMPERATURE UNTIL T-1 IS BELOW UNOCCUPIED SETPOINT. IF T-1 FALLS BELOW UNOCCUPIED HEATING SETPOINT V-2 SHALL MODULATE TO MAINTAIN 65 DEG F (ADJ.) SPACE TEMPERATURE UNTIL T-1 IS ABOVE UNOCCUPIED SETPOINT.

13. OCCUPIED MODE COOLING SETPOINT SHALL BE 75 DEG F (ADJ.). UNOCCUPIED MODE COOLING SETPOINT SHALL BE 80

DEG F (ADJ.).

14. OCCUPIED MODE HEATING SETPOINT SHALL BE 70 DEG F (ADJ.). UNOCCUPIED MODE HEATING SETPOINT SHALL BE 65

DEG F (ADJ.).

15. SAFETY: DRAIN PAN OVERFLOW SWITCH SHALL CLOSE V-1 AND ALARM BAS.

RA

FILTER IN RETURN

GRILLE

FAN

COOLING COIL

TT

T-2

V-1

CHR

CHS

ROOM TEMPERATURE SENSOR, WALL MOUNTED 46" AFF.

T-1

TTFCU BACNET

CONTROLLER

COMMUNICATIONS

BUS TO DDC PANEL

24V POWER SUPPLY

FROM DDC PANEL

FAN COIL SEQUENCE OF OPERATION (HEATING AND COOLING)

HEATING COIL

MPS(30)

MPR

V-2

1. FAN COIL UNIT SHALL FUNCTION BASED ON THE FOLLOWING SEQUENCE DURING OCCUPIED MODE AS ESTABLISHED BY THE BAS. INITIAL OCCUPANCY SCHEDULE SHALL BE 7AM-5PM (ADJ.). CONTROL VALVE SHALL BE PRESSURE INDEPENDENT TYPE VALVE WITH LINEAR ACTUATION. COOLING MODE IS WHEN OUTSIDE AIR TEMPERATURE IS ABOVE 55 DEG F (ADJ.). HEATING MODE IS WHEN OUTSIDE AIR TEMPERATURE IS AT OR BELOW 55 DEG F (ADJ.).

2. DURING OCCUPIED MODE, FAN SHALL RUN CONTINUOUSLY AT MINIMUM SPEED EQUAL TO CFM INDICATED IN FAN COIL

UNIT SCHEDULE, EXCEPT DURING SECOND STAGE COOLING OPERATION AS DESCRIBED BELOW.

3. FIRST STAGE OF COOLING: FAN SHALL RUN AT MINIMUM SPEED. CHILLED WATER CONTROL VALVE V-1 SHALL MODULATE TO MAINTAIN A 72 DEG F (ADJ.) SPACE TEMPERATURE. WHEN SPACE TEMPERATURE REACHES 75 DEG F

(ADJ.) THE SECOND STAGE OF COOLING SHALL BE INITIATED.

4. SECOND STAGE OF COOLING: INCREASE THE FAN SPEED TO MAXIMUM CFM INDICATED IN FAN COIL UNIT SUBMITTAL.

CONTINUE TO MODULATE THE CHILLED WATER CONTROL VALVE V-1 TO MAINTAIN A 72 DEG F (ADJ.) SPACE TEMPERATURE. MAINTAIN MAXIMUM CFM UNTIL SPACE TEMPERATURE RETURNS TO SET POINT. AT SPACE

TEMPERATURE SET POINT FAN SHALL RETURN TO FIRST STAGE OF COOLING MODE.

5. COOLING MODE, WHENEVER T-1 IS BELOW SETPOINT, V-1 SHALL BE CLOSED.

6. FIRST STAGE OF HEATING: FAN SHALL RUN AT MINIMUM SPEED. HOT WATER CONTROL VALVE V-2 SHALL MODULATE

TO MAINTAIN A 72 DEG F (ADJ.) SPACE TEMPERATURE. WHEN SPACE TEMPERATURE REACHES 70 DEG F (ADJ.) THE

SECOND STAGE OF HEATING SHALL BE INITIATED.

7. SECOND STAGE OF HEATING: INCREASE THE FAN SPEED TO MAXIMUM CFM INDICATED IN FAN COIL UNIT SUBMITTAL.

CONTINUE TO MODULATE THE HOT WATER CONTROL VALVE V-2 TO MAINTAIN A 72 DEG F (ADJ.) SPACE TEMPERATURE SET POINT. AT SPACE SET POINT THE FAN SHALL RETURN TO FIRST STAGE OF HEATING MODE.

8. HEATING MODE, WHENEVER T-1 IS ABOVE SETPOINT, V-2 SHALL BE CLOSED.

9. PROVIDE STATUS INDICATION FOR FAN AND CONTROL VALVE.

10. AN ALARM SHALL BE GENERATED AT THE ECC IF SPACE TEMPERATURE RISES 3 DEG. F (ADJ.) ABOVE OR BELOW

SETPOINT, OR IF COMMAND AND STATUS DO NOT MATCH. DELAY ALARM FOR 60 MINUTES AFTER OCCUPIED MODE

BEGINS.

11. PROVIDE TRENDING FOR DISCHARGE AIR TEMPERATURE SENSOR T-2

12. OCCUPANT CONTROL OF SETPOINT VIA WALL THERMOSTAT SHALL BE LIMITED TO PLUS OR MINUS 2 DEGREES OF

SETPOINT (ADJ.) THROUGH THE BAS.

13. DURING UNOCCUPIED MODE, V-1 SHALL REMAIN CLOSED AND FAN SHALL REMAIN OFF T-1 SETPOINT SHALL RESET TO

80 DEG F FOR COOLING AND 68 DEG F FOR HEATING MODES. IF T-1 RISES ABOVE UNOCCUPIED COOLING SETPOINT, FAN SHALL START AND REMAIN AT MINIMUM SPEED AND V-1 SHALL MODULATE TO MAINTAIN 80 DEG F (ADJ.) SPACE TEMPERATURE UNTIL T-1 IS BELOW UNOCCUPIED SETPOINT. IF T-1 FALLS BELOW UNOCCUPIED HEATING SETPOINT, FAN SHALL START AND REMAIN AT MINIMUM SPEED AND V-2 SHALL MODULATE TO MAINTAIN 68 DEG F (ADJ.) SPACE

TEMPERATURE UNTIL T-1 IS ABOVE UNOCCUPIED SETPOINT.

14. OCCUPIED MODE COOLING SETPOINT SHALL BE 75 DEG F (ADJ.). UNOCCUPIED MODE COOLING SETPOINT SHALL BE 80

DEG F (ADJ.).

15. OCCUPIED MODE HEATING SETPOINT SHALL BE 70 DEG F (ADJ.). UNOCCUPIED MODE HEATING SETPOINT SHALL BE 65

DEG F (ADJ.).

16. SAFETY: DRAIN PAN OVERFLOW SWITCH SHALL CLOSE V-1 AND ALARM BAS.

FS

DRAIN PAN

FLOAT SWITCH

Two Pipe Fan Coil

Hardware Points Software Points

Point Name AI AO BI BO AV BV Loop Sched Trend Alarm Show On

Graphic

Discharge Air Temp x x x

Zone Setpoint Adjust x x

Zone Temp x x x

Cooling Valve x x x

Fan Status x x

Zone Override x x x

Fan Start/Stop x x x

Cooling Setpoint x x x

Schedule x

Fan Failure x

Drain Pan Float Switch x x

High Zone Temp x

Low Zone Temp x

Totals 3 1 3 1 1 0 0 1 6 4 8

Total Hardware (8) Total Software (12)

Four Pipe Fan Coil Unit

Hardware Points Software Points

Point Name AI AO BI BO AV BV Loop Sched Trend Alarm Show On

Graphic

Discharge Air Temp x x x

Zone Setpoint Adjustment x x

Zone Temp x x x

Cooling Valve x x x

Heating Valve x x x

Fan Status x x

Zone Override x x x

Fan Start/Stop x x x

Cooling Setpoint x x x

Heating Setpoint x x x

Schedule x

Fan Failure x

Drain Pan Float Switch x x

High Discharge Air Temp x

High Zone Temp x

Low Zone Temp x

Totals 3 2 3 1 2 0 0 1 8 5 10

Total Hardware (9) Total Software (16)

CONSTANT VOLUME AIR TERMINAL

Hardware Points Software Points

Point Name AI AO BI BO AV BV Loop Sched Trend Alarm Show On

Graphic

Airflow x x x

Zone Damper x x x

Room Temperature x x x

Airflow Setpoint x x x

Schedule x

Totals 2 1 0 0 1 0 0 1 4 0 4

Total Hardware (3) Total Software (6)

Chilled Water Circulating Pump

Hardware Points Software Points

Point Name AI AO BI BO AV BV Loop Sched Trend Alarm Show On

Graphic

Chilled Water Bypass Valve x x

Chilled Water Pressure x x x

Chilled Water Return Temp x x x

Chilled Water Supply Temp x x x

Chilled Water Pump VFD Speed x x x

Chilled Water Pump Status x x x

Chilled Water Pump VFD Fault x x x

Chilled Water Pump Start/Stop x x x

Chilled Water Pump Failure x

Chilled Water Pump Running in Hand x

Totals 3 1 3 1 0 0 0 0 6 3 8

Total Hardware (8) Total Software (9)

VARIABLE VOLUME AIR TERMINAL WITH REHEAT

Hardware Points Software Points

Point Name AI AO BI BO AV BV Loop Sched Trend Alarm Show On

Graphic

Airflow x x x

Zone Damper x x x

Room Temperature x x x

Discharge Air Temperature x x x

Heating Control Valve x x x

Airflow Setpoint x x x

Schedule x

Totals 3 2 0 0 1 0 0 1 6 0 6

Total Hardware (5) Total Software (8)

ROOM THERMOSTAT/SENSOR

WALL MOUNTED

48" [1200mm] AFF.

AIR TERMINAL UNIT SUPPLY AND EXHAUST CONTROLS

TU

RHC

HWS

HWR

V-1

REHEAT

COIL

AIR

TERMINAL

UNIT

AIR

FLOW

TE

LAB

TERMINAL

CONTROLLER

PC

TE

ROOM TEMPERATURE (°F)

SP

VAV BOX CONTROL SEQUENCE

W/DEADBAND

A. SET POINTS SHALL BE SET AS FOLLOWS:

COOLING 75°F (ADJ)

HEATING 70°F (ADJ)

DEADBAND OF 5°F BETWEEN HEATING AND COOLING SET POINTS WILL BE MAINTAINED.

B. COOLING - ON AN INCREASE IN SPACE TEMPERATURE MODULATE DAMPER OPEN TO

INCREASE AIRFLOW AND MAINTAIN SPACE TEMPERATURE. ON A FURTHER INCREASE IN

SPACE TEMPERATURE MAINTAIN DAMPER AT MAX COOLING CFM.

C. COOLING - ON A DECREASE IN SPACE TEMPERATURE MODULATE DAMPER CLOSED TO

MINIMUM.

D. REHEAT - ON DECREASE IN SPACE TEMPERATURE THE VAV DAMPER WILL CLOSE TO

MINIMUM POSITION. MODULATE THE REHEAT COIL CONTROL VALVE V-1 TO MAINTAIN

SPACE HEATING SETPOINT.

E. HEATING - ON FURTHER DROP IN SPACE TEMPERATURE VALVE V-1 WILL MODULATE TO

MAINTAIN SET POINT AND DAMPER WILL MODULATE TO HEATING AIRFLOW.

F. HEATING - ON AN INCREASE IN SPACE TEMPERATURE MODULATE DAMPER CLOSED TO

MINIMUM POSITION AND MODULATE THE CONTROL VALVE TO CLOSED POSITION.

G. EXHAUST TERMINAL SHALL MODULATE TO TRACK THE SUPPLY AIRFLOW OFFSET TO

MATCH PROGRAMMED OFFSET.

FE

A

IR

F

LO

W

(C F

M

100%

HEATING

MINIMUM

R

EH

EAT FLO

W

VA

V

AI

R

F

LO

W

TU

EXHAUST

AIR

TERMINAL

UNIT

AIR

FLOW

FE

VARIABLE VOLUME AIR TERMINAL WITH REHEAT AND EXHAUST

Hardware Points Software Points

Point Name AI AO BI BO AV BV Loop Sched Trend Alarm Show On

Graphic

Supply Airflow x x x

Exhaust Airflow x x x

Room Temperature x x x

Discharge Air Temperature x x x

Supply Damper x x x

Exhaust Damper x x x

Heating Control Valve x x x

Airflow Setpoint x x x

Schedule x

Totals 4 3 0 0 1 0 0 1 8 0 8

Total Hardware (7) Total Software (10)

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

A

Cincinnati V.A Medical Center

U.S. Department of Veterans Affairs

B

C

D

E

F

A

B

C

D

E

F

21 4 5 6 7 8 9 10

Phase

ARCHITECT/ENGINEER OF RECORD STAMPCONSULTANT

321 4 5 6 7 8 9 10

FULLY SPRINKLERED

C U s e rs

\j o h n f\

D o c u m e n ts \F

F E

C in c in n a ti

U p g ra d e A

T U s B

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P M

M700

MECHANICAL CONTROLS

08/31/2021 KF JG

CINCINNATI, OH

539-21-111CONSTRUCTION

DOCUMENTS

UPGRADE TERMINAL

UNITS

NTS

VARIABLE VOLUME AIR TERMINAL UNIT CONTROL DIAGRAM

NTS

CONSTANT VOLUME TERMINAL UNIT CONTROLS

NTS

CHILLED WATER CIRCULATING PUMP CONTROLS

NTS

TWO-PIPE FAN COIL UNIT CONTROLS

NTS

TWO-PIPE FAN COIL UNIT CONTROLS WITH

STEAM CONVECTOR CONTROL

NTS

FOUR-PIPE FAN COIL UNIT CONTROLS

NTS

VARIABLE VOLUME AIR TERMINAL UNIT WITH EXHAUST CONTROL

DIAGRAM

1. DIVISION 26 SCOPE OF WORK INCLUDES A POWER SOURCE TO THE MOTOR STARTERS. ALL HVAC

POWER SOURCES REQUIRED BEYOND THESE STARTERS OR BEYOND SOURCES EXPLICITLY SHOWN

ON THE DIVISION 26 DRAWINGS, SHALL BE PROVIDED UNDER THE TEMPERATURE CONTROLS WORK.

THIS SHALL INCLUDE BUT NOT BE LIMITED TO WIRING, CONDUIT, TRANSFORMERS, RELAYS, FUSES, ETC.

2. POINTS SHOWN ARE INTENDED AS AN AID TO THE CONTRACTOR INDICATING THE MINIMUM POINTS REQUIRED FOR CONTROL AND MONITORING. ALL INPUT AND OUTPUT POINTS, AND THEIR REQUIRED

INTERFACE AND ACCESSORY HARDWARE, SHALL BE PROVIDED FOR A COMPLETE AND FUNCTION

CONTROL SYSTEM. IF ADDITIONAL POINTS ARE REQUIRED TO ACCOMPLISH THE SEQUENCES OF

CONTROL SPECIFIED, THESE POINTS, ALONG WITH ADDITIONAL DIRECT DIGITAL CONTROL PANEL(S)

(IF REQUIRED), SHALL ALSO BE PROVIDED.

3. POWER SOURCE FOR ALL “BUILDING CONTROLLERS”, “PROGRAMMABLE EQUIPMENT

CONTROLLERS”, AND FOR ALL CONTROLS SERVING EQUIPMENT THAT IS CONNECTED TO

EMERGENCY POWER, SHALL BE THE “CRITICAL” BRANCH OF THE EMERGENCY POWER SYSTEM.

4. ALL FANS WITH SPEED CONTROL CAPABILITY (VFD, E.C. MOTOR, ETC.) SHALL HAVE SPEED

ADJUSTABLE VIA THE FAN GRAPHIC AT THE ECC.

5. KW USAGE OF ALL VFDs PROVIDED UNDER THIS PROJECT SHALL BE REPORTED TO EXISTING

"EDART" SOFTWARE. COORDINATE WITH VA COR.

6. NEW CONTROLS SHALL BE TRIDIUM, IN ACCORDANCE WITH SPECIFICATION SECTION 23 09 23.

MODIFICATIONS TO THE EXISTING JOHNSON CONTROLS AND AUTOMATED LOGIC SYSTEMS WILL

ALSO BE REQUIRED FOR ANY SCOPE MODIFYING OR REMOVING EXISTING EQUIPMENT, AND SHALL

BE INCLUDED AS PART OF THIS CONTRACT – ALL POINTS, PROGRAMMING, TRENDS, ALARMS,

GRAPHICS, ETC. SHALL BE REMOVED FROM THESE EXISTING CONTROL SYSTEMS FOR ALL

EQUIPMENT THAT IS REMOVED UNDER THIS PROJECT.

CONTROLS GENERAL NOTES

05/20/2021 Revisions: Date:

AMENDMENT 2 10/20/2021

08/31/2021