M701 - CONTROLS AND AUTOMATION.pdf

V-2

(APPLIES TO CONTROL PANEL

408-ERV*)

NEW DISTRIBUTED CONTROL PANEL 408-ERV* (DCP/DDC)

408-ERV* POINTS LIST

1 A COMPLETE SYSTEM OF AUTOMATIC TEMPERATURE CONTROLS SHALL BE INSTALLED

AS REQUIRED TO ACCOMPLISH THE SEQUENCE OF CONTROL FOR VARIOUS ITEMS OF

EQUIPMENT AND SYSTEMS AS DESCRIBED HEREINAFTER. THE SYSTEM SHALL BE A

DIRECT DIGITAL CONTROL SYSTEM UTILIZING ELECTRIC ACTUATION.

2 ELECTRICAL WORK INCLUDES A POWER SOURCE TO THE MOTOR STARTERS. ALL

HVAC POWER SOURCES REQUIRED BEYOND THESE STARTERS OR BEYOND SOURCES

EXPLICITLY SHOWN ON THE ELECTRICAL DRAWINGS, SHALL BE PROVIDED . THIS WORK

SHALL INCLUDE BUT NOT BE LIMITED TO WIRING, CONDUIT, TRANSFORMERS, RELAYS

AND FUSES.

3 BULB WELLS FOR TEMPERATURE SENSING AS INDICATED SHALL BE FURNISHED AND

INSTALLED. PIPING WORK SHALL INCLUDE PROPERLY SIZED WELDOLET OR

THREADOLET FITTINGS PLACED AS DIRECTED BY THE CONTROL SYSTEM SUPPLIER.

4 POINTS LIST IS SHOWN 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 FUNCTIONAL CONTROL SYSTEM. IF OR WHEN 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.

5 ALL DDC WIRING SHALL BE GREEN.

APPLIES TO ALL CONTROLS SHEETS

DDC CONTROLLER

HEATING COIL

FAN-COIL UNIT

SUPPLY AIR

1.1 SUPPLY AIR TEMPERATURE, SENSED BY T-2, SHALL BE MAINTAINED AT SETPOINT

OF 70 DEG. F. VIA DCP BY MODULATING COOLING COIL VALVE V-2 OR REHEAT COIL

VALVE V-3, IN SEQUENCE. SEPARATE CONTROL LOOPS SHALL BE UTILIZED FOR

COOLING AND HEATING FUNCTIONS. COOLING COIL VALVE V-2 SHALL BE FULLY

CLOSED BEFORE REHEAT COIL VALVE V-3 OPENS, AND VICE VERSA.

1.2 WHEN ROOM TEMPERATURE AT T1 IS ABOVE SETPOINT, HOT WATER VALVES V1 &

V3 SHALL BE CLOSED AND CHILLED WATER VALVE V2 SHALL MODULATE OPEN TO THE

COIL TO MAINTAIN TEMPERATURE SETPOINT.

1.3 THE ELECTRONICALLY COMMUTATED MOTOR ON THE SUPPLY FAN SHALL BE

MODULATED. WHEN THE OUTSIDE AIR TEMPERATURE IS BELOW 60 DEGREES F., THE

FAN SHALL REMAIN AT 40 PERCENT AIR FLOW AND THE HYDRONIC VALVES SHALL

MODULATE TO MAINTAIN SPACE TEMPERATURE SETPOINT. IF THE SPACE FALLS OR

RISES MORE THAN 2 DEGREES F. FROM THE SETPOINT, THE FAN SPEED SHALL BE

INCREASED SLOWLY UNTIL THE SPACE IS WITHIN 1.5 DEGREES F. OF SETPOINT.

ABOVE 60 DEGREES F. OUTSIDE AIR TEMPERATURE THE FAN SHALL HAVE A 10

PERCENT AIR FLOW MINIMUM. VALVE V1 SHALL MODULATE TO MAINTAIN SPACE

TEMPERATURE SETPOINT. IF THE ROOM IS MORE THAN 2 DEGREES F. ABOVE

SETPOINT THE FAN SPEED SHALL BE INCREASED UNTIL SPACE IS WITHIN 1.5 DEGREES

F. OF SETPOINT.

1.4 EACH UNIT SHALL INCLUDE A DISCHARGE AIR TEMPERATURE SENSOR.

1.5 EXTEND 24 VOLT POWER TO THE FAN COIL UNIT CONTROLLER FROM THE NEAREST

DDC CONTROL PANEL.

1.6 REFER TO HVAC DESIGN DATA SCHEDULE FOR SPACE TEMPERATURE SETPOINTS

IN BOTH OCCUPIED AND UNOCCUPIED MODES. ROOM SPACE TEMPERATURE SET

POINT SHALL BE ADJUSTABLE FROM THE FRONT END COMPUTER INTERFACE.

1.7 PROVIDE SCHEDULED NIGHT SET-BACK CONTROL FOR CONTINUOUS FAN

OPERATION DURING THE OCCUPIED PERIOD (24 HOURS A DAY, 7 DAYS A WEEK, ADJ.)

AND CYCLED FAN OPERATION TO MAINTAIN REDUCED TEMPERATURE IN THE

UNOCCUPIED PERIOD.

COOLING COIL

V1 V2

TO DDC

LAN TRUNK

24 VOLT POWER

SUPPLY FROM

LOCAL DDC PANEL

SUPPLY AIR

TEMPERATURE

SENSOR

ROOM SPACE

TEMPERATURE

SENSOR

RETURN AIR

* REFER TO FAN COIL UNIT SCHEDULES

FOR VALVE TYPE (2-WAY OR 3-WAY)

CONTROL

VALVE (V2)

24 VAC (SEE

NOTE *)

CONTROL VALVE (V1)

24 VAC (SEE NOTE *)

HWSHWR

FIN TUBE RADIATOR

CONTROL

VALVE (V3) 24

VAC (WHERE

APPLICABLE)

V3

SENSES AND TRANSMITS COOLING

COIL DISCHARGE AIR TEMPERATURE

TO DCP FOR INDICATION ONLY

AIR DRY BULB TEMPERATURE TO

SENSES AND TRANSMITS REHEAT

AIR DRY BULB TEMPERATURE TO

PROPORTIONS FLOW OF STEAM

TEMP. TO DCP FOR INDICATION ONLY

RECOVERY COIL LEAVING AIR DRY BULB

SENSES AND TRANSMITS SUPPLY ENERGY

DCP FOR INDICATION ONLY

TO REHEAT COIL IN RESPONSE

SENSES AND TRANSMITS EXHAUST

DCP FOR CONTROL AND INDICATION

AIR DRY BULB TEMPERATURE TO

SENSES AND TRANSMITS SUPPLY

SENSES AND TRANSMITS OUTSIDE

DCP FOR CONTROL AND INDICATION

AIR DRY BULB TEMPERATURE TO

DCP FOR CONTROL AND INDICATION

ALARM PANEL BY ELECTRICAL)

(FURNISHED AND WIRED TO FIRE

DUCT SMOKE DETECTORS

ENGINEERING CONTROL

TWO-POSITION OUTSIDE AIR

TWO-POSITION EXHAUST AIR

CURRENT SENSING RELAY

DIRECT DIGITAL CONTROL

DIFFERENTIAL PRESSURE

OUTDOOR AIR HUMIDITY

EXHAUST AIR HUMIDITY

DAMPER

D-3

DSD

ECC

OAH

H-1

DAMPER

C

DP-1

DCP

D-1

AIR TO AIR HANDLING UNIT AND

SENSES AND TRANSMITS OUTDOOR AIR

HUMIDITY TO DCP FOR CONTROL AND

SENSES AND TRANSMITS EXHAUST AIR

HUMIDITY TO DCP FOR CONTROL AND

CLOSES WHEN SUPPLY FAN STOPS

AIR FROM AIR HANDLING SYSTEM AND

CONTROLS FLOW OF EXHAUST

CLOSES WHEN EXHAUST FAN STOPS

PROVIDE SMOKE SIGNAL TO DCP

LOCATED IN ENGINEERING BUILDING FOR

MONITORING OF SYSTEM OPERATIONS

INDICATION

INDICATION

WITH THE SEQUENCE OF OPERATION

CONTROLS FLOW OF OUTSIDE

TRANSMITS MOTOR CURRENT TO

HANDLING UNIT IN ACCORDANCE

CONTROLS OPERATION OF AIR

TO DCP TO INDICATE FILTER

TRANSMITS DIFFERENTIAL PRESSURE

DCP TO INDICATE STATUS OF

CONDITION

FANS.

COOLING COIL LEAVING

TEMPERATURE SENSOR

MODULATING CHILLED WATER

SUPPLY ENERGY RECOVERY

MODULATING STEAM

AIR TEMPERATURE

CONTROL VALVE

VENTILATOR LEAVING AIR

CONTROL VALVE

EXHAUST AIRT-4

T-6

T-5

V-1

TO DCP

SUPPLY AIR TEMPERATURE

OUTSIDE AIR TEMPERATURE

SENSOR

SENSOR

REHEAT COIL DISCHARGE

T-1

T-2

T-3

REHEAT COIL LEAVING AIR TEMPERATURE SENSOR

MODULATING REHEAT COIL VALVE

ENERGY RECOVERY VENTILATOR START-STOP

MODULATING COOLING COIL VALVE

SE

V-2

V-3

B

A

G

H

D

C

SUPPLY ENERGY RECOVERY VENTILATOR LEAVING AIR TEMPERATURE SENSOR

EXHAUST AIR HUMIDITY SENSOR

OUTSIDE AIR TEMPERATURE SENSOR (GLOBAL POINT)

SUPPLY AIR TEMPERATURE SENSOR

COOLING COIL LEAVING AIR TEMPERATURE SENSOR

ENERGY RECOVERY VENTILATOR DIRTY FILTER SENSOR

ENERGY RECOVERY VENTILATOR ROTATION SENSOR

SUPPLY AIR DUCT SMOKE DETECTOR (FIRE SYSTEM SHUTDOWN)

EXHAUST AIR TEMPERATURE SENSOR

OUTSIDE AIR HUMIDITY (GLOBAL POINT)

7 T-3

T-1

T-6

DFS

RS

DEVICE

OAH

T-2

T-5

T-4

H-1

DSD-1

TAG

ID

POINT

DESCRIPTION

DEVICE

OUTPUT

INPUT

X

X

X

X

X

X

X

X

X

X

X

POINT TYPE

DI

X

DO AI AO

X

X

X

X

X

131210 11

-F

E

87 9

141 2 3

BA C

D

PROPORTIONS FLOW OF CHILLED

WATER TO COOLING COIL IN RESPONSE

V-2

TO DCP

T-10

TWO-POSITION OUTSIDE AIR DAMPERD-1

LOCATE SENSOR ON NORTH FACE

OF BUILDING UNDER SHIELD

OUTSIDE AIR

5T -2

T-3

T-5

R E

H E

A T

408-PH*

C O

IL

C

O O

L

IN

G

408-CC*

T-6 T-1

T-4 H-1

EXHAUST AIR

N.C.

M

B

D-1

DSD-1

A

(N.O.)

V-1

MPS (30)

LPR

CHS

CHR

C

(N.C.)

N.C.

M

F

D-3

408-ERV*

C O

IL

EXHAUST AIR

T-7

T-8

TEMPERATURE SENSOR

FREEZESTATT-7

T-8 EXHAUST ENERGY RECOVERY VENTILATOR LEAVING AIR TEMPERATURE SENSOR

X

X

AIR TEMPERATURE SENSOR

SHUTS DOWN SUPPLY FAN UPON

SENSING FREEZE CONDITION

FREEZESTATT-7

EXHAUST ENERGY RECOVERYT-8

VENTILATOR LEAVING AIR

TEMPERATURE SENSOR TEMP. TO DCP FOR INDICATION ONLY

RECOVERY COIL LEAVING AIR DRY BULB

SENSES AND TRANSMITS EXHAUST ENERGY

SENDS A DIGITAL SIGNAL TO ALARMROTATION SENSORRS

MOTOR STARTERS STARTS AND STOPS SUPPLY/EXHAUST

FANS IN RESPONSE TO DCP.

F X

DIRTY FILTER SENSORDFS TRANSMITTED FROM 408-ERV1

PROPORTIONS FLOW OF HOT WATER

TO REHEAT COIL IN RESPONSE

MODULATING HOT WATER

CONTROL VALVE

TO DCP

V-3

O A

H

RS

S

E

C

DFS

EXHAUST AIR DUCT SMOKE DETECTOR (FIRE SYSTEM SHUTDOWN)DSD-2

ENERGY RECOVERY VENTILATOR STATUS CURRENT SWITCHC13

DDC SYSTEM THAT ENERGY WHEEL

IS NOT ROTATING.

D-2

D-4

MODULATING REHEAT COIL VALVEV-1 X

R E

H E

A T

408-PH*

D

(N.O.)

V-3

HWR

HWS

C O

IL

1. GENERAL

1.1 UNIT IS NORMALLY STARTED AND STOPPED BY THE DCP OR REMOTELY AT THE

ECC. H-O-A SWITCH SHALL BE KEPT IN THE "AUTO" POSITION. "HAND" AND "OFF"

POSITIONS SHALL BE USED ONLY FOR MAINTENANCE.

1.2 WHEN THE UNIT IS "OFF", FOR ANY REASON, OUTSIDE AIR DAMPER D-1 AND

EXHAUST AIR DAMPER D-2 SHALL BE FULLY CLOSED, AND SUPPLY AND EXHAUST FANS

AND ENERGY RECOVERY WHEEL SHALL BE OFF.

1.3 WHEN THE UNIT IS "ON", DAMPERS SHALL BE OPEN, AND ONCE PROVEN OPEN,

FANS AND WHEEL SHALL START.

2. TEMPERATURE CONTROL

2.1 WHEN DISCHARGE AIR TEMPERATURE AT T-1 IS BELOW SETPOINT, CHILLED

WATER VALVE V-2 SHALL BE CLOSED AND HOT WATER VALVE V-3 SHALL MODULATE

OPEN TO MAINTAIN TEMPERATURE SETPOINT.

2.2 WHEN DISCHARGE AIR TEMPERATURE AT T-1 IS ABOVE SETPOINT, HOT WATER

VALVE V-3 SHALL BE CLOSED AND CHILLED WATER VALVE V-2 SHALL MODULATE OPEN

TO MAINTAIN TEMPERATURE SETPOINT.

3. SUPPLY AIR RESET

3.1 THE ERV CONTROLS SHALL PROVIDE SUPPLY AIR TEMPERATURE CONTROL

BASED ON OUTDOOR AIR TEMPERATURE AS SENSED BY T-2. AT 0 DEG. F OUTDOOR AIR

TEMPERATURE THE SUPPLY AIR TEMPERATURE SHALL BE 90 DEG. F. AT 95 DEG. F.

OUTDOOR AIR TEMPERATURE THE SUPPLY AIR TEMPERATURE SHALL BE 65 DEG. F. ALL

CONTROL SETPOINTS (INCLUDING HIGH AND LOW SET POINTS FOR SUPPLY AIR

TEMPERATURE) SHALL BE FULLY ADJUSTABLE TO MEET JOB CONDITIONS.

4. HUMIDITY CONTROL

4.1 DELETED.

5. FREEZE PROTECTION

5.1 IF THE REHEAT COIL DISCHARGE AIR TEMPERATURE AS SENSED BY FREEZESTAT

T-7 FALLS BELOW 38 DEG.F, AN ALARM SIGNAL SHALL INDICATE AT THE DCP AND ECC

AND THE ERV SHALL SHUT "OFF".

5.2 IF THE STEAM REHEAT COIL DISCHARGE AIR TEMPERATURE AS SENSED BY T-10

FALLS BELOW 32 DEG.F, AN ALARM SIGNAL SHALL INDICATE AT THE DCP AND ECC.

5.2 IF OUTDOOR AIR TEMPERATURE FALLS BELOW 35 DEG.F AS SENSED BY BY T-2,

STEAM REHEAT COIL CONTROL VALVE V-1 SHALL MODULATE TO MAINTAIN AN ERV

ENTERING AIR TEMPERATURE OF 35 DEG F.

5.3 IF THE EXHAUST AIR TEMPERATURE FALLS BELOW 32 DEG.F AS SENSED BY T-8,

STEAM REHEAT COIL CONTROL VALVE V-1 SHALL MODULATE TO MAINTAIN A

DISCHARGE AIR TEMPERATURE OF 35 DEG F.

6. AUTOMATIC SHUTDOWN / RESTART

6.1 WHEN SMOKE IS DETECTED BY ANY DUCT SMOKE DETECTOR, THE ERV SHALL

SHUT "OFF", A SUPERVISORY SIGNAL SHALL BE TRANSMITTED TO THE FIRE ALARM

SYSTEM, AND A SUPERVISORY SIGNAL SHALL INDICATE AT THE DCP AND ECC. THE

ERV SHALL RESTART WHEN WHEN THE FIRE ALARM CIRCUIT IS RESET.

T-10

AIR DRY BULB TEMPERATURE TO

SENSES AND TRANSMITS REHEAT

DCP FOR CONTROL AND INDICATION

REHEAT COIL DISCHARGET-10

AIR TEMPERATURE SENSOR

REHEAT COIL LEAVING AIR TEMPERATURE SENSOR X

DSD-2

TWO-POSITION EXHAUST AIR DAMPERD-2

ES

19 ES OUTSIDE AIR DAMPER END SWITCH X

20 ES EXHAUST AIR DAMPER END SWITCH X

ES

1.1 AIR CONDITIONING FOR EACH IT CLOSET IS PROVIDED BY A CHILLED

WATER FAN COIL UNIT AND A MINI-SPLIT DX COOLING SYSTEM FOR

BACK-UP.

1.2 THE FAN COIL UNITS SHALL HAVE A SET POINT OF 72 DEG. F. (ADJ) AND

THE MINI-SPLIT UNITS SHALL HAVE A SET POINT OF 74 DEG. F. (ADJ).

1.2 THE SPACE TEMPERATURE SENSOR SHALL CONTINUOUSLY BE

MONITORED. A CRITICAL ALARM SHALL BE SENT TO THE DDC SYSTEM

IF ROOM TEMPERATURE RISES ABOVE 90 DEG. F (ADJ).

SENSOR

CENTER

PANEL

SENSOR

SENSOR

DELETED

DELETED

DELETED

DELETED

GENERAL NOTES

FAN-COIL CONTROL SEQUENCE

FOUR PIPE FAN-COIL UNIT CONTROLS

LEGEND

CONTROL PANEL 408-ERV*

AIR HANDLING UNIT 408-ERV*

ERV CONTROL SEQUENCE

IT CLOSET CONTROLS

T1

T2

P: 937-224-0861 www.heapy.com

Project Number

Building Number

Drawing Number

Project Title

Location

Issue Date Checked Drawn

Drawing Title

Approved:

VA FORM 08 - 6231

A

Office of Construction and Facilities Management

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

A/E:

STAMPCONSULTANT

321 4 5 6 7 8 9 10

GUIDON DESIGN INC.

905 N. CAPITOL AVE. SUITE 100 | INDIANAPOLIS, IN. 46204

317.800.6388 | WWW.GUIDONDESIGN.COM

SUSTAINABLE ARCHITECTURE + ENGINEERING

PROJECT LEAD

Architect, Structural Engineer, Civil Engineer

PROJECT NO. STATE COA FIRM NO.2018-05164 01528

/9

/2

:2

:2

P M

M701

CONTROLS AND AUTOMATION CORRECT

INFRASTRUCTURE

DEFICIENCIES, B408

DAYTON, OHIO 45428

552-19-102

PHIL WEST, COR

May 2nd, 2025 GSE WJS

BID DOCUMENTS

FULLY SPRINKLERED

Revisions: Date:

ADDENDUM #1 07/09/2025