8

1
10
8
8
8
Secondary Loop
8
6
8
6
8
8
8
Primary Pumps
8
8
10
To chiller 2
6
6
To chiller 3
From Chiller 1
8
6
EXISTING CHILLER 3 EVAP
TRANE CENTRAVAC- 300Ton EXISTING CHILLER 3
CHILLED WATER PIPING ISOMETRIC DIAGRAM BETHESDA
CENTRAL PLANT
6
6
CHILLER WILL BE SITE-CLEARED BY OTHERS-
FREE-COOLING SYSTEM W/ HEAT EXCHANGER WILL BE
INSTALLED IN THIS LOCATION
7/29/10 TRENT
2
Return to Marley cooling towers
10
6
10
10
from CT Pumps
6
From new 400 Ton Chiller
8
CHILLER 3 COND
8
6
6
TRANE CENTRAVAC-300Ton EXISTING CHILLER 3
COOLING TOWER WATER PIPING ISOMETRIC
DIAGRAM BETHESDA CENTRAL PLANT
8
From new 400 T Chiller by others
6
CHILLER WILL BE SITE-CLEARED BY OTHERS-
FREE-COOLING SYSTEM W/ HEAT EXCHANGER WILL BE
INSTALLED IN THIS LOCATION
7/29/10 TRENT
3
30 HP CHW Circ Pump
CURRENT 300 TON CHILLER PAD-3 Deep
Chilled Water Return
Chilled Water Supply must be 8 service from
8 header above
8
Return Source must be From 8 header above
8
Future Expansion
HEAT- EXCHANGER
8
60
8
8
8
143
Plate Frame Heat Exchanger Assembly (
Insulation jacketed in the field)
Cooling Tower Supply Return Service must be
tapped From 8 headers above
FUTURE 400 TON CHILLER PAD-3Deep (In place for
Install)
30 HP CT Circ Pump
92
175
PROPOSED FREE-COOLING SYSTEM PLAN VIEW BETHESDA
CENTRAL PLANT
7/29/10 TRENT
4
TO HOSPITAL
10
10
10
10
10
10
SECONDARY LOOP
10
10
10
IR 6X9 SB IMP 8.582 1350 GPM 30HP 1775 RPM
RUHRPUMPEN IMP 9.55 1200 GPM AT 60HD 25HP 1800
RPM
8
BG 1510 6BC 9.375 1875 GPM AT 65HD 40 HP 1775
RPM
8
8
10
FREE COOL SYSTEM
8
8
CHILLER2 400T
10
6
6
NEW CHILLER 3-300T
10
8
8
8
8
FROM HOSPITAL
CHILLER 1- 400T
CHILLER SYSTEM WITH FREE-COOLING PROVISION CHILLED
WATER FLOW DIAGRAM
TO HOSPITAL
8
7/29/10 TRENT
5
CHILLER SYSTEM WITH FREE-COOLING PROVISION COOLING
TOWER WATER FLOW DIAGRAM
CHILLER 2
PENDING REPLACEMENT WITH EVAPCO USS-212-524 TYP 2
BG 1510 6BC 8.75 1800 GPM AT 50HD 30 HP 1775 RPM
TOWER SET 1 MARLEY
8
FREE COOL SYSTEM
BG 1510 6BC 9.375 1875 GPM AT 65HD 40 HP 1775
RPM
8
CHILLER 3
TOWER SET 2 EVAPCO TYP 2 SST-112-612
CHILLER 1
7/29/10 TRENT
6
Source at PRV Station Discharge below in BR
15 Steam Service
Condensate Return
CV
2 CV For Each 2 Heater Circuit
3
2
2 Tubular Steam Heating Coils Typical for each
tower basin
2
All other Piping Sch 40 CS Screwed
2
2
2
Tower Service Piping
2
2
2
CV
T
T
T
Roof edge
25
40
All Piping in Basin Sch 10 304/316 SS
Sump Drain
25
23
Sump Drain
CT Basin
CT Basin
Roof edge
All Specialities Trap/Strainer/ Valves For Each
Tube Bundle
Existing Evapco Towers
Existing Marley Towers (dotted)
New Evapco Towers to be installed soon by Owner
PLAN VIEW OF ROOF CHILLER PLANT W/ CONCRETE
TOWER BASINS
7/29/10 TRENT
Parking Lot