AHU-W HVAC Specifications.pdf

PDF 1011 KB Posted Mar 12, 2026

Attached to: J041--Replace Hydronic Cooling Coil
Solicitation number: 36C25626Q0507
Issued by: Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 16

About this file

Written by GovTribe AI · Mar 12, 2026

This is a mechanical design document for an HVAC upgrade project at the Michael E. DeBakey VA Medical Center (Building 110) in Houston, Texas, prepared by Corbett Technology Performance Engineering as of June 29, 2007. The document includes a site plan showing the New Admin Building project area and detailed mechanical schedules for air handling units, heat exchangers, water pumps, and air devices.

The HVAC system specifications detail six air handling units (AHU-1 through AHU-4, AHU-W, and associated units) serving different wings and floors of the facility, with supply air capacities ranging from 4,925 to 27,000 CFM. Key equipment includes a new 27,000 CFM air handling unit for the West Wing with 30 horsepower motor and chilled water cooling capability, existing units being retrofitted with new hot water preheat coils replacing steam coils, and heating water flow rates of 39 to 72 GPM. The heat exchanger schedule specifies TACO U-tube heat exchangers with 400 GPM capacity serving the heating hot water system, supported by two TACO horizontal end-suction pumps with variable frequency drives. Air devices include TITUS return air grilles and supply air diffusers in multiple sizes (8x8 inches to 24x24 inches) with noise criteria not to exceed NC 35, all tested per ASHRAE Standard 70-91. Exhaust fans manufactured by Greenheck provide hood exhaust capabilities ranging from 2,400 to 6,500 CFM with 5 to 10 horsepower motors at 208/3 voltage configuration.

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PWS_AHU -W Building 110.docx	DOCX document	Mar 16, 2026
36C25626Q0507_Sources Sought Notice.docx	DOCX document	Mar 12, 2026
Epoxy Immersive Coating.pdf	PDF	Mar 12, 2026

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B C

U / V

F G

74 44

NEW ADMIN BLDG PROJECT LIMIT LINE

Houston, TX

Michael E. DeBakey VAMC 2002 Holcombe Blvd.

Dept. of Veterans Affairs

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ENGINEERING

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STEAM PLANT

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ENERGY CONTROL

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CENTER

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GROUNDS

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NHCU PKG LOT

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RETENTION POND

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VAN

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RAMP

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EDUCATION CTR.

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VAN

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VAN

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VAN

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HOLCOMBE RETAIL CENTER

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INTROGEN THERAPEUTICS INC

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TRAILER

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WASTE DISPOSAL

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ENTRANCE 71

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ENTRANCE 70

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HOLCOMBE RETAIL CENTER

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INTROGEN THERAPEUTICS INC

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GATE

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GATE

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FISHER HOUSE 1

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VA REGIONAL OFFICE

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FISHER HOUSE 2

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ENTRANCE 73

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GRASS MEDIAN

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FNC-0.5'N&W

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EJB

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SIGN

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SIGN

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GRANITE

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WALL (TYP)

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ELEC

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CONTROL PANEL

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WALL (TYP)

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GRANITE

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IRON FNC

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IRON FNC

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48" SAN(RECORD)

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ENERGY CENTER DR

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OLD SPANISH TRAIL

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CAMBRIDGE

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LE CAPITAN

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CATE TERRACE

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HOLCOMBE BLVD.

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RINGNESS AVE

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ALMEDA

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SOUTH LEE

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WEST LEE

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EAST LEE

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MIXON AVE

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ENTRANCE

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STORAGE

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NO PARKING

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FISHER HOUSE 3

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MIXON AVE

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MAIN ENTRANCE

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EXECUTIVE

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VALET

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VAN

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SHEEHAN AVE

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CHP

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XXX

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CENTERPOINT

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24' DRIVING AISLE

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25' DRIVING AISLE

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25' DRIVING AISLE

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ADMIN BLDG

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GARAGE

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NEW PARKING

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MWM

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CS101

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MICHAEL E. DEBAKEY VAMC SITE PLAN

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SCALE: 1" = 100'

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AutoCAD SHX Text 3/21/2018

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ARCHITECT/ENGINEERS:

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VA FORM 08-6231

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AutoCAD SHX Text Office of Construction and Facilities Management

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SITE PLAN

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SITE PARKING LOT / STRIPING PLAN

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LAST UPDATED 10/15/2022

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AHU-W

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AIR HANDLING UNITS (SYSTEMS)

FAN CHILLED WATER COOLING COIL (CC) HOT WATER PREHEAT COIL (PHC)

ENT AIR LVG AIR CHILLED WATER HEATING WATER

MARK AREA SERVED SYSTEM SUPPLY AIR EXT. S P. MOTOR VOLTS/PH DB WB DB WB CHW FLOW WPD TEMP IN TEMP OUT AIR SP LOSS TOTAL SENSIBLE HW FLOW WPD TEMP IN TEMP OUT ENT AIR LVG AIR AIR SP LOSS TOTAL REMARKS

TYPE (CFM) (IN WG) (HP) (DEG F) (DEG F) (DEG F) (DEG F) (GPM) (FT WG) (DEG F) (DEG F) (IN WG) (MBH) (MBH) (GPM) (FT WG) (DEG F) (DEG F) (DEG F) (DEG F) (IN WG) (MBH)

AHU-3 (93) EAST WING, FLR 1 100% OA 7,300 --- 5 208 I 3 95.0 80.0 54.0 53.0 127 --- 42 54 --- 664.3 352.7 39 --- 160 180 30.4 80.4 --- 394.2 1, 2, 3

AHU-4 (93) EAST WING, FLR 2 100% OA 8,400 --- 5 208 I 3 95.0 80.0 54.0 53.0 127 --- 42 54 --- 763.1 405.0 45 --- 160 180 30.4 80.4 --- 453.6 1, 2, 3

AHU-1 (02) CTR WING, FLR 1 E ½ 13% OA 4,925 3.5 7.5 460 / 3 78.0 65.0 55.0 54.6 24 --- 44 54 --- 118.7 101 .6 --- --- --- --- --- --- --- --- 4, 5

AHU-2 (02) CTR WING, FLR 1 W ½ 9% OA 4,925 3.5 7.5 460 / 3 78.0 65.0 55.0 54.6 23 --- 44 54 --- 115.9 90.8 --- --- --- --- --- --- --- --- 4, 5

AHU-1 (99) CTR WING, FLR 2 E ½ 25% OA 8,000 --- 7.5 208 I 3 80.0 67.5 53.0 52.0 75 10 45 55 --- 373.8 233.3 9 160 180 50 60 --- 86.4 1, 2, 3

AHU - W WEST WING, FLR 1 & 2 100% OA 27,000 2.1 30 208 I 3 83.6 79.9 52.4 52.4 409 17 44 57 1.03 2659.4 973.8 72 2.59 180 160 30.4 55 0.1 717.4 6

TOTAL 785 TOTAL 165

REMARKS

1 EXISTING UNIT WITH CHW COOLING COIL AND STEAM PREHEAT COIL. DATA PROVIDED FOR REFERENCE ONLY AND TRANSCRIBED FROM ORIGINAL PROJECT'S SCHEDULE SHEET.

2 STEAM PREHEAT COIL TO BE REMOVED AND NEW HW PREHEAT COIL TO BE INSTALLED IN AHU. CHILLED WATER COIL TO REMAIN IN SERVICE.

3 HW PREHEAT COIL DATA SHOWN IS APPLICABLE FOR THIS PROJECT.

4 EXISTING UNIT WITH CHW COOLING COIL AND NO PREHEAT COIL. DATA PROVIDED FOR REFERENCE ONLY AND TRANSCRIBED FROM ORIGINAL PROJECT'S SCHEDULE SHEET.

5 EXISTING CHILLED WATER COIL TO REMAIN IN SERVICE.

6 NEW AIR HANDLING UNIT TO SERVE WEST WING FLOORS 1 AND 2.

HEAT EXCHANGER SCHEDULE WATER PUMP SCHEDULE AIR DEVICE SCHEDULE

MARK HX-1 CURRENT LOAD HX-1 MAX CAP. MARK HWP-1 HWP-2 MARK A B C D s T

GENERAL GENERAL TYPE RETURN RETURN RETURN RETURN SUPPLY SUPPLY

SERVES HEATING HW SYSTEM LOCATION BASEMENT BASEMENT MATERIAL ALUMINUM ALUMINUM ALUMINUM ALUMINUM ALUMINUM ALUMINUM

MANUFACTURER TACO TACO SYSTEM SERVED HEATING HW HEATING HW FINISH WHITE WHITE WHITE WHITE WHITE WHITE

MODEL NO. E12212-S E12212-S MANUFACTURER TACO TACO MANUFACTURER TITUS TITUS TITUS TITUS TITUS TITUS

HEAT EXCHANGER MODEL NO. Fl 3011 E2 JAJ1 LOA Fl 301 1 E2 JAJ 1 LOA MODEL NO. 350RS 350RS 350RS 350RS TMS - AA 301 FL

TYPE U TUBE U TUBE TYPE HORIZ, END SUCTION, HORIZ, END SUCTION, SIZE ~ (IN X IN) 24 X 16 24 X 12 12 X 12 12 X 8 24 X 24 8 X 8

PASSES 2 2 CLOSE COUPLED CLOSE COUPLED REMARKS 1, 2, 3, 4, 5 1, 2, 3, 4, 5 1, 2, 3, 4, 5 1, 2, 3, 4, 5 1, 2, 3 1, 2, 3

SHELLSIDE WATER SIDE REMARKS

CAPACITY (GPM) 400 400 1 ALL AIR DEVICES SHALL BE TESTED IN ACCORDANCE WITH ASHRAE STANDARD 70-91.

MEDIUM STEAM STEAM

3,373 4,322 HEAD (FT. WATER) 95 95 2 BORDER TYPE SHALL BE COMPATIBLE WITH CEILING TYPE FOR THE SPACE IN WHICH IT IS LOCATED.

FLOW RATE (LBS/HR)

IMPELLER (IN) 10.3 10.3 3 NOISE CRITERIA, NC MAXIMUM 35.

STEAM TEMP (DEG F) 227.2 239.4

MIN EFFICIENCY 75 75 4 FURNISH WITH INTEGRAL OPPOSED BLADE DAMPER.

STEAM PRESSURE (PSIG) 5 1 0

3,288 4,136 ELECTRICAL 5 INSTALL WITH BLADE DEFLECTION IN THE SAME DIRECTION AS AIRFLOW.

LOAD (MBH)

TU BESIDE MOTOR (VOLT / HERTZ / PH) 460 / 60 / 3 120 / 60 / 3

FLUID WATER WATER MOTOR (HP) 20 20

FLOW RATE (GPM) 332 400 MOTOR SPEED (RPM) 1,765 1,765

TEMP IN (DEG F) 160 150 SERVICE FACTOR 1. 1 5 1.15

TEMP OUT (DEG F) 180 1 81 REMARKS EXHAUST FANS

PRESS DROP (FT W.G.) 3.64 5.18 1 EXISTING PUMPS WITH VARIABLE FREQUENCY DRIVES.

2 DATA PRESENTED FOR REFERENCE ONLY. TAKEN FROM ORIGINAL MARK EF - 1W EF - 2W EF - 3W EF - 4W

VELOCITY (FPS) 5.33 6.42

PROJECT'S SCHEDULE SHEETS & FIELD VISIT. GENERAL

AREA SERVED 155 LAB 139 LAB 167A LAB 141 LAB 3 BRONZE FITTINGS, MECHANICAL SEAL, CARBON STEEL SHAFT, en REMARKS "' INERTIA BASE, PREMIUM EFFECIENCY MOTOR, DRIP LIP BASE WITH DRAIN. 261 LAB 247 LAB 263 LAB 241 LAB

D 1 EXISTING COMPLETELY FUNCTIONAL STEAM TO HOT WATER HEAT EXCHANGER

0 SERVICE HOOD EXHAUST HOOD EXHAUST HOOD EXHAUST HOOD EXHAUST

SYSTEM. - MANUFACTURER GREENHECK GREENHECK GREENHECK GREEN HECK <(

2 PERFORMANCE PARAMETERS NOTED IN CURRENT LOAD COLUMN REPRESENT

I MODEL NO. 9 - IPA 9 - IPA 9 - IPA 9 - IPA

REQUIREMENTS FOR THIS PROJECT.

f--- TYPE CENTRIFUGAL CENTRIFUGAL CENTRIFUGAL CENTRIFUGAL

" 3 TO ACHIEVE A MAXIMUM PUMP CAPACITY OF 400 GPM THE PRESSURE OF THE

AIRFLOW LL STEAM WILL NEED TO BE INCREASED TO 10 PSIG. THIS REPRESENTS AN

EFFECTIVE MAXIMUM DELIVERY FOR THE HEAT EXCHANGER. EXHAUST AIR (CFM) 2,400 2,400 2,400 2,400 X

EXT. S.P. (IN. W.G.) 2.6 2.6 2.7 2.6

"' FAN SPEED (RPM) 2,340 2,340 2,340 2,340

0 EXHAUST STACK (IN. 0) 14 14 14 14

EXHAUST ORIFICE (IN. 0) 1 0 1 0 10 1 0 I

0 ELECTRICAL -

MOTOR (HP) 5 5 5 5

" MOTOR (VOLT / PH) 208 I 3 208 I 3 208 / 3 208 / 3

f---

<( REMARKS ALL UNITS

1 UNITS SHALL HAVE SINGLE POINT CONNECTIONS FOR POWER AND CONTROL.

2 PROVIDE DISCONNECT SWITCH IN ACCORDANCE WITH NEC REQUIREMENTS.

CORBETT TEt:H#OI.OllY

NO DATE REVISIONS "

VA MEDICAL CENTER 0

PlER.FOR.HANClE lENc;tNlElER.tNc; "

HVAC UPGRADE, BLDG 110 0

2801 B Cardinal Drive -

Manchaca, Texas 78652 w Tel (512)-444-4565 3 06/29/07 RECORD DRAWING

MECHANICAL SCHEDULES-AHU, HT EXCH, WTR PMP, AIR DEVICE Fax (512)-444-1010

Email PCorbett..,austin.rr.corn 2 10/19/06 FINAL DESIGN/CONSTRUCTION

EF - SW EF - 6W

E ½ W WING W ½ W WING

FLOORS 1 & 2 FLOORS 1 & 2

GEN EXHAUST GEN EXHAUST

GREEN HECK GREEN HECK

15 - IPA 15 - IPA

CENTRIFUGAL CENTRIFUGAL

CPC

<e'PC

5,200 6,500

3.2 3.7

1,220 1,402

20 22

15 17

7.5 10

208 / 3 208 / 3

DATE: @!79'12Jl / 0 6

SCALE: AS INDICATED

PROJECT MANAGER:

PAT CORBETT, P.E.

DESIGN ENGINEER:

PAT CORBETT, P.E.

CLlENT:

YORK IN TERNATIONAL CORP

M5.0

Site Plan Updated_10-15-2022

Sheets and Views

Site Plan

VA110_M5.0

File details come from the government source that posted it. Updated Mar 12, 2026.