Attch 22 M601.pdf

CHILLED WATER SYSTEM FLOW DIAGRAM

GLOBE VALVE TO FD

AHU CHILLED WATER COIL NOTE:CHILLED WATER PIPING AND

ACCESSORIES INSULATION NOTE:

GENERAL PIPING INSTALLATION NOTE:

AFTER FINAL TAB IS COMPLETE AND APPROVED, THE CONTRACTOR SHALL

PERMANENTLY INSTALL A DIGITAL DIFFERENTIAL PRESSURE GAUGE ACROSS

EACH AHU CHILLED WATER COIL CIRCUIT SETTER. PERFORMANCE CHARTS

INDICATING MEASURED DP AND CORRESPONDING FLOWRATE FOR EACH

CIRCUIT SETTER SHALL BE PERMANENTLY INSTALLED IN GLASSED FRAMES

ON THE WALL OF THE MECHANICAL ROOM FOR EASY REFERENCE BY VIRGINIA

TECH MAINTENANCE PERSONNEL. THE DIFFERENTIAL PRESSURE GAUGE

PROVIDED SHALL HAVE READINGS IN UNITS OF FT OF WATER (GLOBAL WATER

OR APPROVED EQUAL).

CHILLED WATER PIPE INSULATION SHALL BE CONTINUOUS WITHOUT

EXPOSED SECTIONS AND AIR TIGHT. ALL VALVES, STRAINERS, GAUGES,

P/T PORTS AND BLEEDS OR VENTS SHALL BE COVERED. ZESTON ELLS

WILL NOT BE USED FOR CHILL WATER PIPING. AFTER ALL MECHANICAL

WORK IS COMPLETE, AN INSPECTION WILL BE DONE.

CONTRACTOR SHALL REVIEW ALL EQUIPMENT MANUFACTURER'S

INSTALLATION MANUALS PRIOR TO INSTALLATION OF ANY PIPING SYSTEMS

TO DETERMINE EQUIPMENT SERVICING/SERVICE CLEARANCE

REQUIREMENTS. CONTRACTOR SHALL LOCATE AND INSTALL FLANGES

AND/OR UNION CONNECTIONS IN THE PIPING SYSTEMS AS REQUIRED TO

PERMIT COMPLETE TEMPORARY REMOVAL OF PIPING AND VALVE

ASSEMBLIES TO ALLOW FOR EQUIPMENT SERVICING AND REPLACEMENT.

PIPE INSTALLATIONS WHICH WILL RESULT IN THE NEED TO DEMOLISH PIPING

SYSTEMS TO ALLOW SERVICING OF OR REPLACEMENT OF EQUIPMENT IS

NOT PERMITTED. THIS REQUIREMENT APPLIES TO, BUT IS NOT LIMITED TO,

AIR HANDLING UNITS, TERMINAL UNITS, CHILLERS, BOILERS AND HEAT

EXCHANGERS. IN NO CASE SHALL THE PIPING INSTALLATION INTERFERE

WITH THE MANUFACTURER'S RECOMMEND ACCESS TO THE EQUIPMENT.

WELLS FOR PRESSURE /

TEMPERATURE TAP

CONNECTIONS (TYP FOR 4)

1" DRAIN LINE AND BALL VALVE AT

LOW POINT IN PIPING (TYP)

FLOW SWITCH

CF

CF

PRESSURE GAUGE NOTE:

HYDRONIC PIPING INSTALLATION NOTE:

PROVIDE PRESSURE GAUGES ON ALL WATER CONNECTIONS TO HEAT

EXCHANGERS TO MEASURE PRESSURE DROP FOR MAINTENANCE.

PROVIDE DRAIN VALVES AT SYSTEM LOW POINTS AND MANUAL AIR

VENTS AT SYSTEM HIGH POINTS.

C W

S

C W

R

2-1/2"

PRESSURE GAUGE

(-30-100 PSIG TYP.)

COMPOUND

PRIOR TO TAB WORK (TYP.)

REMOVE START-UP STRAINER

FLEX CONNECTION

(TYP. BOTH SIDES)

1/4"

1/4"

2-1/2"

3" 2-1/2" C

W S

°F

CWR (55°F)

1-1/2"

2-1/2"

2-1/2"

DIAPHRAGM EXPANSION TANK,

PRECHARGE TO 12 PSIG

3/4"

ET-2

3/4" DRAIN WITH

THREADED HOSE BIBB

PRESSURE GAUGE

(O-100 PSIG)

VENTURI BALANCE

VALVE, 57.7 GPM

INTEGRAL TO AIR-COOLED

CHILLER ACC-1

VALVE-SET AT 12 PSIG

PRESSURE REGULATION

3/4" BYPASS

M

CHILLED WATER METER

PROVIDE 8 WATT/SF SELF

REGULATING HEAT TAPE ON

EXTERIOR PIPING

1-1/2" TO RACK STORAGE

ROOM CRAC UNITS

INSIDE MECHANICAL

ROOM

RELIEF VALVE

SET AT 21 PSIG

TO AIR HANDLING UNIT2"

2-1/2"

TO TOWER BUILDING

CRAC UNITS

FULL SIZE 2-WAY

MODULATING

BYPASS, LOCATED AT

CRAC-3

FULL SIZE 2-WAY

MODULATING BYPASS,

LOCATED AT CRAC-4

1"

3/4" MAKE-UP WATER,

REFER TO SHEET MP101

FOR BACKFLOW

PREVENTER AND

CONTINUATION

TANGENTIAL AIR

SEPARATOR,

AS-1

HIGH CAPACITY

AIR VENT

DRAIN WITH

THREADED

HOSE BIBB

5 GALLON CHEMICAL

SHOT FEEDER3/4""

3/4"

4" CONCRETE PAD

NO SCALE

CWP-1

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ACC-1

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Lic. No. 35155

10/15/21

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