36C25919R0092-0003008.pdf

9-CT-3

9-CT-2

9-CT-1

FS-1

9-P-4

9-P-5

C

S

R

23-11

23-13

23-12

23-12

23-20

23-14

23-22

23-21

23-26

EXISTING HEAT

EXCHANGER

EXISTING

SECONDAY

PUMPS

EXISTING

SCREW CHILLER

EXISTING

ABSORPTION

CHILLER

EXISTING

CENTRIFUGAL

CHILLER

EXISTING

PRIMARY

PUMPS

EXISTING

CENTRIFUGAL

FILTER

EXISTING STEAM

UNIT HEATER

EXISTING STEAM

UNIT HEATER

EXISTING AIR

SEPARATOR

14" CS

12" CS

E

12" CS

D

R

M

T

M

M

P

(E) 1 1/4"

W

TANK OVERFLOW

DRAIN PIPE

SUMP DRAIN PIPE

STRAINER BASKET

DRAIN PIPE

23-19

(E) 2 1/2"

A

E

M

M

P

1" CDR-M

23-27

23-30

" CDR-H

" STM-HP

EXISTING STEAM FLOW METER

EXISTING STEAM

CONTROL VALVE

D

R

M

R

S

APPROX.

FLOOR

LEVEL

(E) 8" CWR

(E)SUH

" CWR

" CWR" CWS

10" CR

10"CS

12" CS

14" CS

23-18

23-17

C

R

23-13

23-13

23-15

COOLING TOWER

OVERFLOW DRAIN

PIPE, TYP.

23-28

23-2323-23

23-16

DEDUCT ALTERNATE # 2

9-CT-1

9-CT-2

9-CT-3

23-10

23-1023-10

23-10

23-10

23-10

FS-1

23-10

23-10

23-16

23-26

23-27

EXISTING

SECONDARY PUMPS

(E) 2 1/2"

(E) 1 1/4"

(E) 1" CDR-M

(E) 1" STM-MP

EXISTING PLATE

HEAT EXCHANGER

EXISTING

ABSORPTION

CHILLER

EXISTING

CENTRIFUGAL

CHILLER

EXISTING

SCREW

CHILLER

EXISTING POT

FEEDERS

EXISTING

CENTRIFUGAL

FILTER

EXISTING STEAM

UNIT HEATER

EXISTING

CONDENSATE

PUMP

EXISTING AIR

SEPARATOR

EXISTING STEAM

UNIT HEATER

M

M

P

C

R

(E) 8"

(E) 3/4" CA

23-30

(E)SUH

R

S

(E)SUH

M

M

P

(E) 3/4" CA

(E) 1" CDR-M

Office of

Construction and Facilities

Management

Project Number

Building Number

Drawing Number

Dwg. of

DrawnCheckedDate

Location

Project TitleDrawing Title

Approved: Project Director

ARCHITECT/ENGINEERS:CONSULTANTS:

DateRevisions:

VA FORM 08-6231

1 2 3 4 5 6 7 8 9

F

E

D

C

B

A

Department of

Veterans Affairs

1 2 3 4 5 6 7 8 9 10

F

E

D

C

B

A o n e e i g h t i n c h o n e f o o t o n e q u a r t e r i n c h o n e f o o t o n e e i g h t i n c h o n e f o o t o n e h a l f i n c h o n e f o o t o n e q u a r t e r i n c h o n e f o o t o n e i n c h o n e f o o t o n e a n d o n e h a l f i n c h e s o n e f o o t t h r e e i n c h e s o n e f o o t

575-16-104

Replace Boiler Plant

Cooling Towers

2226.M08

A

M

2/14/2019

HYDRONIC RISER

DIAGRAMS

M901T

JBMK

Grand Junction, CO

CONSTRUCTION DOCUMENTS

M901T

2 CHILLED/CONDENSER WATER RISER DIAGRAM

M901T

1 CHILLED/CONDENSATE WATER RISER DIAGRAM

KEYNOTES

23-26 PROPOSED CHILLED WATER RETURN PIPING RENTAL CHILLER TIE IN POINT. COORDINATE WITH COR FOR SCHEDULING

AND EXACT TIE IN POINT. ASSUME TIE IN TO TAKE PLACE OFF HOURS. THIS SCOPE OF WORK SHALL BE DELETED AS A PART OF DEDUCT ALTERNATE # 1. THIS WORK SHALL TAKE PLACE BEFORE ANY WORK INSIDE THE CHILLER PLANT STARTS. SEE SCOPE AND SEQUENCE OF WORK SUMMARY ON SHEET M000T FOR FURTHER INFORMATION.

23-27 PROPOSED CHILLED WATER SUPPLY PIPING RENTAL CHILLER TIE IN POINT. COORDINATE WITH COR FOR SCHEDULING AND EXACT TIE IN POINT. ASSUME TIE IN TO TAKE PLACE OFF HOURS. THIS SCOPE OF WORK SHALL BE DELETED AS A PART OF DEDUCT ALTERNATE # 1. THIS WORK SHALL TAKE PLACE BEFORE ANY WORK INSIDE THE CHILLER PLANT STARTS. SEE SCOPE AND SEQUENCE OF WORK SUMMARY ON SHEET M000T FOR FURTHER INFORMATION.

23-28 RE-INSTALL 12 INCH BASKET STRAINERS AND ISOLATION VALVES. PROVIDE 1 INCH MANUAL ISOLATION VALVE AND DRAIN DOWN PIPING TO NEAREST FLOOR DRAIN. PROVIDE DP SENSORS ACROSS EACH STRAINER AND TIE TO

AUTOMATION SYSTEM GRAPHICS.

23-30 THE EXISTING BUILDING 9 COOLING PLANT IS KNOWN TO CONTAIN ASBESTOS. SEE MECHANICAL GENERAL NOTES ON

SHEET M000T AND SPECIFICATION 02 82 13.13 FOR ASBESTOS ABATEMENT REQUIREMENTS.

KEYNOTES

23-18 PROVIDE NEW 12 INCH CONDENSER WATER RETURN PIPING AND CAP AT EXTERIOR OF BUILDING AND AT

APPROXIMATELY 15 FEET AFF FOR TEMPORARY COOLING TOWER CONNECTION. PROVIDE MANUAL ISOLATION VALVE AT BRANCH CONNECTION AND SLOPE ALL EXTERIOR PIPING 1/4 INCH PER FOOT BACK TOWARD THE INTERIOR, MANUAL DRAIN VALVE INSIDE BUILDING 9 FOR GRAVITY DRAIN DOWN OF ALL EXTERIOR CONDENSER WATER RETURN PIPING.

23-19 RE-INSTALL EXISTING SUBMERSIBLE SUMP PUMP, PIPING, AND ALL ACCESSORIES FOR A COMPLETE AND OPERABLE SYSTEM FOR SUMP PIT DRAIN DOWN. ROUTE FORCED MAIN TO NEAREST FLOOR DRAIN AND PROPER AIR GAP PER

CODE.

23-20 RE-INSTALL EXISTING SWEEPER SYSTEM, INCLUDING TURBULATOR NOZZLES, PIPING, PUMP SUCTION CHECK VALVE, AND ALL ACCESSORIES FOR A COMPLETE AND OPERABLE SYSTEM. CONTRACTOR TO REPLACE ANY DEFECTIVE ITEMS

OF SYSTEM UPON REINSTALLATION WITHOUT ANY INCREASED COST TO THE VA.

23-21 PROVIDE NEW 4 INCH MANUAL BALANCING VALVE IN DISCHARGE LINE OF EXISTING CENTRIFUGAL SEPARATOR FILTRATION SYSTEM (CS-1/9-P-10). RE-ROUTE SUPPLY AND RETURN PIPING AROUND RELOCATED 12 INCH BASKET STRAINERS AS REQUIRED. TAB CONTRACTOR TO CHECK FLOW AND WORK WITH CONTROLS CONTRACTOR TO SET PRESET SPEED ON VFD TO PROVIDE A CONSTANT 200 GPM THROUGH THE LAKOS CENTRIFUGAL SEPARATOR WHENEVER THE SYSTEM IS ENERGIZED. CONTRACTOR TO ADJUST FLOW BY MEANS OF THE VFD SPEED AND NOT CHOKE DOWN THE BALANCING VALVE. BALANCING VALVE IS INSTALLED AS A MEANS TO MANUALLY MEASURE FLOW ONLY. CONTRACTOR TO ENSURE AUTOMATIC BLOW DOWN AND ENTIRE SYSTEM IS FULLY OPERATIONAL.

CONTRACTOR TO PROVE TO THE COR THAT THIS SYSTEM IS 100% OPERATIONAL BEFORE ANY UN-INSTALLATION WORK IS TO TAKE PLACE. SEE GENERAL MECHANICAL NOTE #11 ON SHEET M000T FOR REQUIREMENTS. ANY DEFECTIVE PORTION OF THE SYSTEM SHALL BE REPLACED BY THE CONTRACTOR WITHOUT INCREASED COST TO THE VA.

23-22 PROVIDE NEW DISC FILTER SKID AS SCHEDULED. PROVIDE NEW 6 INCH PUMP SUCTION PIPING AND TERMINATE ALONG THE BOTTOM OF THE NEW SUMP BASIN FLOOR. PROVIDE A 6 INCH CHECK VALVE AT THE BOTTOM OF THE SUCTION LINE LOCATED IN THE VERTICAL RISER. CONNECT A NEW 6 INCH CONDENSER WATER DISCHARGE LINE TO THE CONDENSER WATER SUPPLY LINE COMING FROM THE NEW VERTICAL TURBINE PUMPS AND FEEDING THE NEW CONDENSER WATER SYSTEM AND CHILLERS. CONTRACTOR TO PROGRAM SYSTEM CONTROLLER FOR OPTIMUM SYSTEM BLOW DOWN THAT KEEPS DISC FITLER ASSEMBLY CLEAN BUT MINIMIZES THE AMOUNT OF MAKE-UP WATER.

ROUTE 2 INCH AUTOMATIC BLOW DOWN DISCHARGE LINE TO NEAREST FLOOR DRAIN AND PROVIDE PROPER AIR GAP PER CODE. SEE PLUMBING PLANS FOR COMPRESSED AIR CONNECTION. IF THIS DEDUCT ALTERNATE IS TAKEN ALL PIPING AND ACCESSORIES FOR THE CONDENSER WATER SUPPLY, RETURN, AND COMPRESSED AIR SHALL BE INSTALLED AS A PART OF THE BASE BID TO ADD THIS FILTRATION SYSTEM IN THE FUTURE WITHOUT SHUTDOWN OF THE COOLING PLANT. SEE DEDUCT ALTERNATE #3 ON SHEET M000T FOR FURTHER CLARIFICATION AND DETAIL.

23-23 CONNECT NEW 12 INCH CONDENSER WATER SUPPLY AND RETURN PIPING TO PLATE AND FRAME HEAT EXCHANGER.

COORDINATE WITH COR WHETHER TO CONNECT TO THE EXISTING HEAT EXCHANGER OR A NEW HEAT EXCHANGER

WHICH IS OUT OF THE SCOPE OF THIS PROJECT.

KEYNOTES

23-10 EXISTING EQUIPMENT TO REMAIN.

23-11 REMOVE COOLING TOWER 9-CT-3 AND ALL ACCESSORIES FROM THE PROJECT AS A PART OF DEDUCT ALTERNATE #2.

BRANCH PIPING INCLUDING THE TEE, MOTORIZED CONTROL ISOLATION VALVE, BALANCING VALVE, AND DRAIN DOWN PIPING AND VALVING PER KEYNOTE 23-14 SHALL REMAIN AS A PART OF THE BASE BID. INSTALL THE 14 INCH SUPPLY AND 12 INCH RETURN CONDENSER WATER PIPING AND STUB THROUGH THE EXTERIOR WALL AND CAP. ISOLATION

VALVE SHALL REMAIN CLOSED UNTIL FUTURE COOLING TOWER CAN BE INSTALLED.

23-12 ALL NEW 14 INCH CONDENSER WATER SUPPLY PIPING EXITING EACH NEW COOLING TOWER AT APPROXIMATELY 8 FEET AFF SHALL BE SLOPED AT 1/4" PER FOOT TOWARD NEW CONDENSER WATER SUMP BASIN LOCATED 6.5 FEET AFF FOR GRAVITY DRAIN DOWN OF EXTERIOR PIPING. TERMINATE SUPPLY PIPE AT APPROXIMATELY 24 INCHES ABOVE NEW

FINISHED SUMP BASIN FLOOR HEIGHT.

23-13 ALL NEW 12 INCH CONDENSER WATER RETURN PIPING SUPPLYING EACH NEW COOLING TOWER AT APPROXIMATELY 15 FEET AFF INSIDE AND 22 FEET AFF OUTSIDE SHALL BE SLOPED 1/4" PER FOOT BACK TOWARD INTERIOR AUTOMATIC/MANUAL DRAIN DOWN VALVE ASSEMBLY FOR GRAVITY DRAIN DOWN OF EXTERIOR PIPING.

23-14 PROVIDE A 1 INCH SOLENOID VALVE AND A MANUAL DRAIN DOWN VALVE IN PARALLEL FOR AUTOMATIC DRAIN DOWN OF CONDENSER WATER RETURN PIPING ON EXTERIOR OF BUILDING 9 AND FEEDING EACH COOLING TOWER. CONNECT ALL (3) 1 INCH COOLING TOWER DRAIN DOWN PIPES AND ROUTE TO NEW CONDENSER WATER SUMP BASIN AT APPROXIMATELY 6.5 FEET AFF. MANUAL VALVE SHOULD BE CLOSED AT ALL TIMES AND IS ONLY INTENDED TO OPERATE

DURING A POWER OUTAGE FOR MANUAL EXTERIOR PIPING DRAIN DOWN.

23-15 PROVIDE NEW 1 INCH CONDENSER WATER SUPPLY PIPE AND CONNECT TO EXISTING CHEMICAL TREATMENT SYSTEM.

ALSO PROVIDE NEW 1 INCH CONDENSER WATER TREATMENT OR CHEMICAL FEED PIPE FROM WATER TREATMENT SYSTEM TO NEW CONDENSER WATER SUMP PIT OR REROUTE EXISTING PIPING AS REQUIRED FOR THE NEW INCREASED HEIGHT OF THE SUMP PIT BASIN AT THE 6.5 FEET AFF LEVEL. CONTRACTOR TO MAINTAIN EXISTING WATER TREATMENT PROGRAM OR PROVIDE NEW WATER TREATMENT PROGRAM AS A RESULT OF THE NEW AND INCREASED CONDENSER WATER SYSTEM SIZE FOR THE NEW PLANT. COORDINATE WITH COR AND/OR WATER TREATMENT CONTRACTOR FOR EXACT REQUIREMENTS. THE EXISTING OR NEW SYSTEM SHALL STILL BE TIED TO THE BAS AND BE ABLE TO ADJUST CONDUCTIVITY SETPOINT AND ANY OTHER CONTROL SETPOINT CURRENTLY SHOWN AND CONTROLLABLE AT THE FRONT END. REINSTALL AND ENSURE AUTOMATIC BLOW DOWN SYSTEM IS 100% OPERATIONAL AND REPROGRAM CONDUCTIVITY CONTROLLER TO AUTOMATICALLY BLOW DOWN AT PROPER INTERVALS OR CYCLES

OF CONCENTRATION FOR NEW CONDENSER WATER SYSTEM.

23-16 CONNECT NEW CONDENSER WATER SUPPLY AND RETURN TO CHILLER. COORDINATE WITH COR WHETHER TO CONNECT TO THE EXISTING CHILLER OR A NEW CHILLER WHICH IS OUT OF THE SCOPE OF THIS PROJECT.

23-17 PROVIDE NEW 14 INCH CONDENSER WATER SUPPLY PIPING AND CAP AT EXTERIOR OF BUILDING AND AT APPROXIMATELY 8 FEET AFF FOR TEMPORARY COOLING TOWER CONNECTION. TERMINATE AT APPROXIMATELY 24 INCHES ABOVE BOTTOM OF SUMP PIT FINISH FLOOR HEIGHT AND SLOPE ALL PIPING BACK TOWARD NEW INTERIOR SUMP BASIN PIT AT 1/4 INCH PER FOOT FOR GRAVITY DRAIN DOWN OF EXTERIOR CONDENSER WATER SUPPLY PIPING.

DEDUCT

ALTERNATE #3

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