067 M201.PDF

FAN

MS

D

X

FILTER

ERU-1 AND RTU-3 (E)

HOA

M

EXHAUST

AIR

START / STOP

SUPPLY AIR

TO VAV

BOXES

FAN

MS

HOA

M

START / STOP

M

ENERGY

RECOVERY

UNIT (ERU-1)

MODIFICATIONS TO SEQUENCE OF OPERATIONS:

A.

B.

C.

1.

2.

THE ENERGY RECOVERY UNIT (ERU-1) SHALL BE SUPPLIED WITH A FACTORY

MOUNTED CONTROL PANEL THAT CONTAINS A DAMPER CONTROL TIMER.

ERU-1 SHALL ENERGIZE WHENEVER RTU-3 IS IN OCCUPIED MODE. WHEN

DAMPER CONTROL TIMER CALLS FOR THE DAMPER POSITION CHANGE, THE

ELECTRIC SOLENOID VALVE SHALL CHANGE THE DAMPER POSITION. THE

ERU-1 SHALL OPERATE THROUGH FACTORY CONTROL SEQUENCE.

WHEN RTU-3 IS IN MINIMUM VENTILATION OR OFF, MOTORIZED DAMPER M-1

SHALL BE OPEN AND M-2 SHALL BE CLOSED. WHEN RTU-3 IS OPERATING IN

ECONOMIZER MODE, M-1 SHALL BE CLOSED AND M-2 SHALL BE OPEN.

ALARMS:

WHEN THE DISCHARGE AIR TEMPERATURE SENSES TEMPERATURE

BELOW 40 DEG F OR ABOVE 85 DEG F, THE RTU-3, EF-8 AND ERU-1

SHALL SHUT DOWN AND MOTORIZED DAMPERS SHALL CLOSE.

WHEN THE EMERGENCY SHUT OFF IS ACTIVATED ALL EXHAUST FANS

ON AREAS 1, 2, AND 3, RTU-1 THROUGH 4 AND ERU-1 SHALL SHUT DOWN

AND ALL MOTORIZED DAMPERS SHALL CLOSE.

M

EF-8

CONTROL

PANEL

INPUTS

DESCRIPTION ITEM

DCC OUTPUTS

DESCRIPTION ITEM

MIXED AIR TEMPERATURE

3BUILDING TIME CLOCK

4EMERGENCY SHUT-OFF

2OUTSIDE AIR TEMPERATURE

5EF STATUS

6RTU FAN STATUS

CONTROL

PANEL

OAT2

BTC

ESO4

7MOTORIZED DAMPER STATUS

10FAN START/STOP

11DAMPER OPEN/CLOSE

12EF START/STOP

H

C

CONTROL

PANEL

INPUTS

DESCRIPTION ITEM

DCC OUTPUTS

DESCRIPTION ITEM

SPACE TEMPERATURE

3ENTERING AIR TEMPERATURE

2MOTORIZED DAMPER

4DAMPER POSITION

5HEATING WATER VALVE

VAV (TYPICAL)

M 2 4

CONTROL

PANEL

SUPPLY AIR

FROM RTU

SUPPLY AIR

TO SPACE

TS1

VAV BOX SEQUENCE OF OPERATIONS:

VAV BOX SHALL CONSIST OF A DAMPER, HEATING COILS AND UNIT

MOUNTED CONTROL PANEL.

COOLING MODE:

a) WHEN THE ENTERING AIR TEMPERATURE IS BELOW 65 DEG F, THE VAV BOX SHALL MODULATE TO MAINTAIN SPACE

TEMPERATURE SETPOINT OF 78 DEG F.

b) THE HEATING COIL CONTROL VALVE SHALL BE CLOSED.

HEATING MODE:

a) WHEN THE ENTERING AIR TEMPERATURE IS ABOVE 65 DEG F, VAV

BOX SHALL BE SET TO THE MINIMUM OPEN POSTION.

b) THE HEATING COIL CONTROL VALVE SHALL MODULATE TO

MAINTAIN A SPACE TEMPERATURE OF 70 DEG F.

1.

2.

A.

CONTRACTOR SHALL ENSURE ALL VAV BOXES (NEW AND EXISTING) IN

AREAS 1, 2, AND 3 ARE CONNECTED TO THE DIRECT DIGITAL CONTROL

(DDC) SYSTEM AND ARE CAPABLE OF BEING RESET REMOTELY FROM THE

DDC SYSTEM.

B.

SD

RETURN

AIR

SD

OSA/ EA

OSA/ EA

DP

FILTER DIFFERENTIAL PRESSURE 8

DUCT PRESSURE SENSOR 9

CONTROL

PANEL

EAT3

CT

CT

OUTSIDE

AIR

RELIEF

AIR

G

EXISTING

EXISTING

MAT

M

7 11

M-1 M-2

RTU-3 EXISTING SEQUENCE OF OPERATIONS:

A.

B.

C.

UNIT STARTS BY TIME-CLOCK OR MANUAL OFF-ON-AUTO SWITCH. PACKAGE

CONTROLS BY UNIT MANUFACTURER CONTROL THE VAV, ECONOMIZER AND

D-X COIL SECTIONS. UNITS STOP BY TIME-CLOCK OR MANUAL OFF-ON-AUTO

SWITCH.

WHEN UNIT IS IN MANUAL "OFF" POSITION, BUILDING OCCUPIED TEMPERATURE

IS BY- PASSED, BUT UNIT SHALL CONTINUE TO OPERATE FROM NIGHT

SET-BACK AND MIXED AIR THERMOSTATS (SEE NEXT PARAGRAPH). NIGHT

SET-BACK THERMOSTATS (NSB) START THE UNIT WHEN THE INDOOR

TEMPERATURE REACHES 60 DEGREES F. (ADJ). AVERAGING ELEMENT

THERMOSTATS START THE UNIT WHEN MIXED AIR CHAMBERS REACH 45

DEGREES F. (ADJ). ECONOMIZER SECTIONS ARE LOCKED OUT WHEN UNITS

ARE STARTED BY THESE THERMOSTATS AND UNITS RUN UNTIL THERMOSTATS

ARE SATISFIED. EACH NIGHT SET-BACK THERMOSTAT HAS A DIFFERENTIAL OF

5 DEGREES AND THE MIXED AIR THERMOSTAT HAS A DIFFERENTIAL OF 10

DEGREES.

THE FOLLOWING SAFETY DEVICES SHALL BE HARD-WIRED BACK TO THE

SUPPLY MOTOR AND ECONOMIZER DAMPER CONTROL: SUPPLY AND RETURN

AIR SMOKE DETECTORS AND FREEZE-STAT. UPON ACTIVATION OF ANY

SAFETY DEVICE, SUPPLY FAN STOP AND ECONOMIZER DAMPERS RETURN TO

NORMAL POSITIONS. SAFETY DEVICES SHALL REQUIRE MANUAL RESET.

PAGE NUMBER

SHEET NO.

OF

DATE

DRAWING TITLE:

COMMUNICATION

PROJECT TITLE:

PROJECT NUMBER:

DESIGNED BY

DRAWN BY

SAFETY

USING AGENCY

SECURITY POLICE

CHIEF OF ENGRG.

BASE CIVIL ENGINEER

BIO-ENVIR. ENGR.

CHIEF OF OPS. FIRE CHIEF

MSG COMMANDER

WING COMMANDER

MARK REVISION DATE

COLORADO

OFFICE OF THE BASE CIVIL ENGR.

AIR NATIONAL GUARD

Burns & McDonnell Proj No 51047

CRWU 06-2071

6-9-2009

REPAIR WING

BUILDING 706

HEADQUARTERS

M201

P. HUNTZINGER

B. BIRGE

CONTROL

SCHEMATIC

CORRECTIONS