UNH Boiler Replacement Project Existing Conditions and Scope 2026.7.12.pdf
PDF 8 MB Posted
- Attached to
- Architectural and Engineering Services for UNH Combined Heat & Power Plant Equipment Replacement
- Solicitation number
- 212027986
- Issued by
- New Hampshire
About this file
This document is a technical scope and existing conditions analysis for the University of New Hampshire (UNH) Boiler Plant Equipment Replacement Project, prepared as part of architectural and engineering design services. The project encompasses the replacement of major boiler plant equipment at UNH's Combined Heat & Power facility, with design documentation dated July 12, 2026. The scope includes demolition of four existing boilers, installation of two new 1,200 horsepower boilers (CBJT-2W-1200HP models), replacement of the condensate tank system with a new 4,000-gallon atmospheric tank, upgrades to water softening systems, installation of three new electric boiler feedwater pumps (40 HP each), replacement of the deaerator with a new 120,000 PPH unit, installation of new heating hot water pumps, and relocation of the facility generator to an external location. The project also includes installation of a new 32-inch boiler stack through the roof, reconstruction of roof structure and access platforms, replacement of safety relief valves, and demolition of abandoned piping systems. Critical project considerations include phasing strategy to maintain plant operations during construction, potential need for temporary rental boilers, evaluation of the circa-1970 electrical switchboard for continued use or replacement, and coordination of construction sequencing with building access limitations through an existing loading dock measuring 6'8" x 7'11".
The document emphasizes several key technical and logistical factors affecting project execution. The existing condensate surge tank (approximately 4,000 gallons) is identified as insufficient for handling plant transient conditions, and the engineer must evaluate whether to replace or supplement this tank with an additional vessel for improved cost efficiency and redundancy. Existing fuel oil piping, natural gas, and processed landfill gas (PLG) systems will be reused and redirected to new boiler locations. The oil-water separator and condensate pump will be repurposed to serve only the Siemens fuel oil heater, with consideration given to eliminating this device entirely through alternate solutions. Construction must include temporary full-height dust barriers to isolate the operating plant from renovation areas, and the engineer must confirm that all piping designated as existing-to-remain is appropriate for continued service. Combustion air requirements must be engineered, though the document notes that combustion rates are not increasing from existing firing rates and the facility has not experienced negative pressure issues historically. The project requires careful coordination with UNH regarding temporary stair access, roof access points, and site grading changes following stack demolition.
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Text version
UP
A B C D E F G H
"ø
"ø
"ø
5"ø
6"ø
"ø
6"ø
6"ø
"ø
"ø
3"ø
3"ø
"ø
"ø
3"ø
"ø
FOR
FOS
D C
W
D C
WS
o ft e n e d M a k e u p W a te r
H
IG
H P
R E S S U
R E S
T E A M
LO PRESS STEAM
"ø
"ø
6"ø
5"ø
4"ø
6"ø
6"ø
5"ø
5"ø
Steam
Natural Gas
DCW
Heating Water Supply
Steam
Steam
Steam
Condensate
12"ø
8"ø
8"ø
"ø
"ø
6"ø
3"ø 4"ø
"ø
"ø
"ø
C o n d e n sa te
L o w
P re ss u re
R e tu rn
Low Pressure Return
Natural Gas
Blended Gas
PLG
Domestic Cold Water
Pumped Condensate
C o n d e n sa te
Dual Temp Supply
Dual Temp Return
Dual Temp Return
Softened Makeup Water
PRV 100psig to 18psig
Pumped Condensate
(E) FUEL OIL
TRANSFER
PUMP
(E) BLOW
DOWN TANK
5"ø
5"ø
3"ø
5"ø
HWR
HWS
LPCR
HPS
BOILER ABOVE
(SHOWN FOR REFERENCE ONLY)
GARAGE DOOR EXTERIOR
RAMP UP TO GRADE
High Press Steam
6"ø Steam UP
5"ø Steam UP
6"ø Steam UP
10"ø Steam UP
3"ø Condensate UP
3" UP
CAPPED
CAPPED
CAPPED
CAPPED
CAPPED
6"ø Steam UP
6"ø Steam UP
10"ø Steam UP
(E)SyncroFlo
Pumps
3" DN
5"ø PLG UP 4"ø Natural Gas UP 4"ø Feedwater UP
5"ø Condensate UP
4" UP
6"ø Heating Water Return UP6"ø Heating Water
Return UP
CAPPED
1"ø FOR UP
1"ø FOS UP
CONTROL SKID
PLG
BLG
Natural Gas
Natural Gas
P L G
PLG
S o ft e n e d M a k e u p W a te r
C o n d e n sa te
PLG
BLG
BLG
BLGBLG
BLG
PLG
PIPE TUNNEL
5' 5" DEEP
6"ø
NEW PLANT
WATER
BOOSTER
SYSTEM
Scale
Date
Drawn By
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Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :2
P
M
M101
BASEMENT NEW
WORK PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
No. Description Date
1/4" = 1'-0"
BASEMENT NEW WORK
marks Polygon marks Ellipse marks Ellipse marks Ellipse marks Ellipse marks PolyLine marks PolyLine marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Rectangle marks Line marks Line marks Line marks Callout
4" PCR @ 12'-0" AFF
marks Callout
NEW CONDENSATE TANK ~4,000 GAL
NEW CONDENSATE RETURN PUMPS AND REFEED ALL RETURN LINES.
marks Callout CONNECT EXISTING CONDENSATE RETURN LINES TO NEW TANK PRIOR TO DEMOLITION OF EXISTING TANK marks Text Box
TO CONDENSATE TANK
marks Callout
NEW WATER SOFTENERS
marks Ellipse marks Ellipse marks PolyLine marks PolyLine marks PolyLine marks PolyLine marks Snapshot marks Text Box NEW 4,000 GALLON CONDENSATE/ SURGE TANK CLEAVER BROOKS SRG-4000 OR SIMILAR. TANK IS ATMOSPHERIC AND DOES NOT REQUIRE AN ASME STAMP. FIELD FABRICATION MAY BE NECESSARY.
marks Text Box PROVIDE NEW WATER SOFTENERS FOR THE THE CONDENSATE RETURN SYSTEM. EXISTING TANKS ARE LIKELY SIZED FOR TOO LOW OF FLOW, THIS IS CAUSING MAKE-UP ISSUES WITH THE CONDENSATE RECEIVER. COUPLING THIS WITH A LARGER CONDENSATE RETURN VESSEL/SURGE TANK WILL ASSIST WITH BOILER FILLING CONCERNS.
marks Ellipse marks Ellipse marks Ellipse marks Callout
REFEED NEW BOILERS WITH EXISTING NG, PLG, AND FUEL OIL PIPING
marks Callout
UPDATE WATER SOFENERS TO HIGHER FLOW SYSTEM. RELOCATE IF NECESSARY
marks Callout EXISTING TANK AND PUMPS TO ONLY BE DEMOLISHED AFTER NEW SYSTEM IS OPERATIONAL AND ALL LINES RE-FED TO NEW TANK
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
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Mark Schow Rectangle
Mark Schow Callout OIL WATER SEPARATOR AND CONDENSATE PUMP WILL NOW ONLY BE SERVING THE SIEMENS FUEL OIL HEATER. CONSIDER ALTERNATE SOLUTIONS THAT COULD FULLY ELIMINATE THIS DEVICE.
Mark Schow Callout EXISTING SURGE TANK IS ABOUT 4,000 GALLONS AND IS INSUFFICIENT TO DEAL WITH PLANT TRANSIENT CONDITIONS. EVALUATE SYSTEM NEEDS TO DETERMINE THE ACTUAL TANK REQUIREMENTS. CONSIDER ADDING AN ADDTIONAL TANK TO WORK WITH THIS TANK RATHER THAN REPLACING THIS TANK. THIS APPROACH WOULD BE LOWER COST, MORE SPACE EFFICIENT, AND PROVIDE SOME REDUNDANCY. EVALUATE EXISTING TANK FOR CONTINUED SERVICE.
Mark Schow Rectangle
Mark Schow Callout CIRCA 1970 SWITCHBOARD SHALL BE EVALUATED FOR CONTINUED USE OR REPLACEMENT. ANALYSIS SHALL INCLUDE TEMPORARY EQUIPMENT AND IMPACT TO PLANT DURING CONSTRUCTION AS AN EXTENDED OUTAGE IS NOT VIABLE.
Mark Schow Callout PHASING IS A CRITICAL PART OF THIS PROJECT AND DETERMINIATION OF SEQENCING AND THE POTENTIAL NEED FOR RENTAL BOILERS AND ISOLALTION AND CONNECTION POINTS SHALL BE EVALUATED.
DN
A B C D E F G H
LOW PRESS STEAM
Pumped Cond.
UP/DN
12"ø
12"ø
12"ø
12"ø
8"ø
12"ø
"ø
"ø
"ø
"ø
"ø
"ø 1 "ø 6"ø
6"ø
4"ø
"ø
10"ø
10"ø
6"ø
"ø
10"ø
8"ø
3"ø
6"ø
6"ø 6"ø
"ø
"ø
6"ø
"ø
10"ø
10"ø
12"ø Heating Water Return UP
6"ø
"ø
PLGPLG
Steam
Steam
Condensate
Heating Water Supply
6"ø Steam DN
Heating Water Return
(E)
GENERATOR
CAPPED
TEE DN
TAP
DN
6"ø Steam DN
6"ø Steam UP 5"ø Steam DN
10"ø Heating Water Return UP
6"ø Heating Water Return UP
CAPPED
CAPPED
Disconnected
CAPPED
3" DN
5" DN
6" UP
6" DN 4" DN
6" UP
6" DN
4" UP
6" UP
4" UP VTR
CAPPED
TO HEAT EXCHANGER
7 AT MEZZ. LEVEL
(E)
Water
Heater
10"ø Steam UP
10" DN
3" DN
UP/DN
CAPPED
UP/DN
4" DN
6"ø Steam UP
10"ø Condensate
DN
FROM DEAERATOR
6" DN
6" DN
UP/DN
8" UP
(E) BOILER 4
TO HEAT EXCHANGER 5
6" UP
12" DN
10"ø Heating Water Return UP
10"ø Heating Water Return UP
TO HEAT EXCHANGER 1
TO HEAT EXCHANGER 3
1"ø FOR DN 1"ø FOS DN
Heating Water Supply Heating Water Return
Condensate Steam
3"ø Condensate UP
6" UP VTR
Scale
Date
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :2
P
M
M102
GROUND LEVEL
NEW WORK PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
No. Description Date
1/4" = 1'-0"
GROUND LEVEL NEW WORK
marks Snapshot marks Snapshot marks Callout
RE-FEED NEW B-1 & B-2 WITH EISTING NG, PLG, AND FUEL OIL
marks Callout
CBJT-2W-1200HP
marks Length Measurement 7'-0" marks Length Measurement 7'-0" marks Callout
CBJT-2W-1200HP
marks Callout
PROVIDE NEW STAIRS TO NEW ACCESS PLATFORMS. IMPROVE WIDTH AND RISE/RUN RATIOS.
EXISTING COLUMNS WILL NEED TO BE DEMOLISHED FOR THE NEW BOILERS.
marks Callout
EVLAUATE EXISTING CHEMICAL TREATMENT FOR REUSE
marks Callout
EVLAUATE EXISTING CHEMICAL TREATMENT FOR REUSE
marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Rectangle marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Line marks Rectangle marks Line marks Callout INSTALL TEMPORARY FULL HEIGHT DUST BARRIER DURING DEMO/CONSTRUCTION TO ISOLATE EXISTING (OPERATING) PLANT FROM PORTION OF PLANT UNDER CONSTRUCTION marks Rectangle marks Rectangle marks PolyLine marks PolyLine marks Callout
EXISTING LOADING DOCK PROVIDES 6'8" X 7'11" CLEAR ACCESS
marks Callout CONSIDER BOILER OPTIONS THAT CAN FIT THROUGH EXISTING PATHWAY WITHOUT OPENING THE ROOF marks Callout
NEW ACCESS PANELS ARE APPOXIMATELY 9.5' X 10.5' CLEAR.
marks Callout
ACCESS TO THE NEW PANELS FROM THE EXTERIOR IS LIMITED.
marks Callout
SCHEDULE OUTAGE AND CAP BOILER FEED WATER
marks Callout
RE-FEED NEW BOILERS WITH EXISTING FEEDWATER PIPING
marks Rectangle marks Callout PROVIDE (3) NEW BOILER FEED WATER PUMPS. PHASE PUMPS SO THAT THREE (3) PUMPS ARE ALWAYS AVAILABLE OR COORDINATE WORK WITH PLANT SHUTDOWNS. ALL NEW PUMPS SHALL BE ELECTRIC 40 HP.
REUSE AS MUCH EXISTING FEEDWATER PIPING AS POSSIBLE. REPLACE PUMP INLET/OUTLET PIPING AS NECESSARY.
marks Callout
CONNECT TO NEW DEAERATOR DURING PLANT OUTAGE
marks Callout ENGINEER TO DETERMINE COMBUSTION AIR REQUIREMENTS. COMBUSTION RATES ARE NOT INCREASING FROM EXISTING FIRING RATES AND FACILITY HAS NOT HAD ISSUES WITH NEGATIVE PRESSURE.
PROVIDE MAKEUP AIR UNIT IF REQUIRED.
marks Rectangle marks Callout
PROVIDE NEW PUMPS FOR HEATING HOT WATER SYSTEM
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
Mark Schow Text Box I. Anderson
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Mark Schow Rectangle
Mark Schow
OLD PLANT GENERATOR TO BE DEMOLISHED AND A NEW GAS FIRED GENERATOR LOCATED IN THE ALLEY.
DN
A B C D E F G H
12"ø
"ø
"ø
"ø
10"ø
10"ø
12"ø
"ø
"ø
"ø
8"ø
"ø
6"ø
12"ø
6"ø
6"ø
12"ø
"ø
"ø
12"ø
"ø
"ø
12"ø
"ø
"ø
12"ø
"ø
"ø
12"ø
12"ø
12"ø
"ø
8"ø3"ø
"ø
"ø
"ø
"ø
S te a m
C o n d e n sa te
High Press Steam
6" DN
6"ø Heating Water Return DN
6" DN
6" UP VTR
6" UP VTR
(E) BOILER 4
10" DN
10" DN
6" UP VTR
6" UP VTR
4" UP VTR
6"ø Heating Water Return DN
6" UP VTR
6" UP VTR
10"ø Heating Water Return DN
Heating Water Return
10" DN
(E) DUCT UP THRU ROOF
6"ø Heating Water Return DN
5"ø Condensate DN
12"ø Heating Water Return DN
3"ø Condensate DN
5"ø Steam DN 3"ø Condensate DN
Steam
6" UP VTR
Heating Water Supply
Heating Water Return
4" UP VTR
5"ø PLG DN 4"ø PLG DN
P L G
P L G
Scale
Date
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :2
P
M
M103
MEZZANINE NEW
WORK PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
No. Description Date
1/4" = 1'-0"
MEZZANINE NEW WORK
marks Polygon marks Ellipse marks PolyLine marks PolyLine marks Line marks Callout
NEW 120,000 PPH DEAERATOR WORK TO BE PERFORMED DURING PLANT OUTAGE
marks Callout EVALUATE ALL SAFETY RELIEF VALVES FOR CONTINUED USE, REFURBISHMENT, OR REPLACEMENT marks Callout
RE-FEED NEW B-1 & B-2 WITH EISTING NG, PLG, AND FUEL OIL
marks Callout
VTR (2-1/2")
marks Callout
CBJT-2W-1200HP
marks Snapshot marks Snapshot marks Rectangle marks Rectangle marks Length Measurement 7'-0" marks PolyLine marks Line marks Line marks Line marks Length Measurement 7'-0" marks Line marks Line marks Line marks Line marks Text Box
STACK
marks Text Box
GAS TRAIN
marks Line marks Line marks Line marks Line marks Callout
CBJT-2W-1200HP
marks Text Box
MANHOLE
marks Line marks Line marks Text Box
STEAM OUTLET
marks Line marks Line marks PolyLine marks PolyLine marks Line marks Text Box
FUEL OIL
marks Text Box
FUEL OIL
marks Line marks Callout CATWALKS AND STAIRS IN BOILER ROOM ARE ASSUMED TO BE ALL. EVALUATE IF ANY ARE EXISTING TO REMAIN.
marks Line marks Callout INSTALL TEMPORARY FULL HEIGHT DUST BARRIER DURING DEMO/CONSTRUCTION TO ISOLATE EXISTING (OPERATING) PLANT FROM PORTION OF PLANT UNDER CONSTRUCTION marks Callout
EVALUATE BOILER SIZING TO MEET CAMPUS LOADS AND REDUNDANCY.
marks PolyLine marks PolyLine marks PolyLine marks Callout
NEW ISOLATION VALVES TO SUPPORT CONSTRUCTION
marks Callout
ISOLATION VALVE & BLANK FOR FUTURE TIE IN
marks Rectangle marks Callout
PROVIDE NEW STEAM TO HOT WATER HEAT EXCHANGERS
marks Snapshot
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
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Mark Schow
CONSIDER BUILDING NEW DA TANK IN THIS LOCATION AND THEN DEMOLISHING THE EXISTING AS THIS WILL SIGNIFICANTLY REDUCE PRESSURE ON OUTAGE WORK
A B C D E F G H
(E) BOILER #4 STACK
Scale
Date
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :3
P
M
M104
ROOF NEW WORK
PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
No. Description Date
1/4" = 1'-0"
ROOF NEW WORK
marks Line marks Callout INSTALL TEMPORARY FULL HEIGHT DUST BARRIER DURING DEMO/CONSTRUCTION TO ISOLATE EXISTING (OPERATING) PLANT FROM PORTION OF PLANT UNDER CONSTRUCTION marks Callout
REPAIR WINDOWS
PROVIDE EXHAUST FAN IN ONE WINDOW
marks Rectangle marks Callout
REFRAME STRUCTURE AND REINSTALL ROOF
marks Ellipse marks Ellipse marks Callout 32" BOILER STACK UP THROUGH ROOF. STACK TO BE FREESTANDING ~20' ABOVE TOP OF STEEL AT LOW ROOF AS DETERMINED BY THE AIR PERMIT.
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
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UP
"ø
"ø
"ø
5"ø
6"ø
"ø
6"ø
6"ø
"ø
"ø
3"ø
3"ø
"ø
"ø
3"ø
"ø
FOR
FOS
D C
W
D C
WS
o ft e n e d M a k e u p W a te r
H
IG
H P
R E S S U
R E S
T E A M
LO PRESS STEAM
"ø
"ø
6"ø
5"ø
4"ø
6"ø
6"ø
5"ø
5"ø
Steam
Natural Gas
DCW
Heating Water Supply
Steam
Steam
Steam
Condensate
12"ø
8"ø
8"ø
"ø
"ø
6"ø
3"ø 4"ø
"ø
"ø
"ø
C o n d e n sa te
L o w
P re ss u re
R e tu rn
Low Pressure Return
Natural Gas
Blended Gas
PLG
Domestic Cold Water
Pumped Condensate
C o n d e n sa te
Dual Temp Supply
Dual Temp Return
Dual Temp Return
Softened Makeup Water
PRV 100psig to 18psig
Demolish abandoned chilled water pipes.
M105
(E)
CONDENSATE
TANK
(E)
ELECTRIC
CONDENSATE
PUMP 1
(E) STEAM
TURBINE
CONDENSATE
PUMP
Pumped Condensate
(E) FUEL OIL
TRANSFER
PUMP
(E) BLOW
DOWN TANK
5"ø
5"ø
3"ø
5"ø
HWR
HWS
LPCR
HPS
BOILERS ABOVE (SHOWN FOR REFERENCE ONLY)
GARAGE DOOR EXTERIOR
RAMP UP TO GRADE
High Press Steam
6"ø Steam UP
5"ø Steam UP
6"ø Steam UP
10"ø Steam UP
CAPPED
(E)
ELECTRIC
CONDENSATE
PUMP 2
3"ø Condensate UP
3" UP
CAPPED
CAPPED
CAPPED
CAPPED
CAPPED
6"ø Steam UP
6"ø Steam UP
10"ø Steam UP
(E)SyncroFlo
Pumps
3" DN
5"ø PLG UP 4"ø Natural Gas UP 4"ø Feedwater UP
5"ø Condensate UP
4" UP
6"ø Heating Water Return UP6"ø Heating Water
Return UP
CAPPED
1"ø FOR UP
1"ø FOS UP
1"ø FOS UP
1"ø FOR UP
1"ø FOR UP 1"ø FOS UP
1"ø FOR UP
1"ø FOS UP
CONTROL SKID
PLG
BLG
Natural Gas
Natural Gas
P L G
PLG
S o ft e n e d M a k e u p W a te r
C o n d e n sa te
A B C D E F G H
PLG
BLG
BLG
BLGBLG
BLG
PLG
Mechanic's Office
Demolish abandoned chilled water pipes.
Scale
Date
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :3
P
M
M105
BASEMENT
DEMOLITION PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
1/4" = 1'-0"
BASEMENT DEMO
No. Description Date
Abandoned Chilled Water Pipes to Demo marks Callout ENGINEER TO CONFIRM PIPING SHOWN AS EXISTING-TO-REMAIN IS APPROPRIATE FOR CONTINUED SERVICE marks Callout
RELOCATE ANTIQUE AIR COMPRESSOR
marks Ellipse marks Ellipse marks Ellipse marks Callout
DEMOLISH OR RELOCAT WATER SOFTENING SYSTEM AS NECESSARY
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
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LOW PRESS STEAM
Pumped Cond.
UP/DN
12"ø
12"ø
12"ø
12"ø
8"ø
12"ø
"ø
"ø
"ø
"ø
"ø
"ø 1 "ø 6"ø
6"ø
4"ø
"ø
10"ø
10"ø
6"ø
"ø
10"ø
8"ø
3"ø
6"ø
6"ø 6"ø
"ø
"ø
6"ø
"ø
10"ø
10"ø
12"ø Heating Water Return UP
6"ø
"ø
PLGPLG
Steam
Steam
Condensate
Heating Water Supply
6"ø Steam DN
Demolish abandoned chilled water pipes.
Heating Water Return
(E) Heating
Hot Water
Pump 1
(E) Heating
Hot Water
Pump 2
(E) Heating
Hot Water
Pump 3
(E) Heating
Hot Water
Pump 4
(E) Heating
Hot Water
Pump 5
(E)
GENERATOR
CAPPED
TEE DN
TAP
DN
6"ø Steam DN
6"ø Steam UP 5"ø Steam DN
10"ø Heating Water Return UP
6"ø Heating Water Return UP
CAPPED
CAPPED
Disconnected
CAPPED
3" DN
5" DN
6" UP
6" DN 4" DN
6" UP
6" DN
4" UP
6" UP
4" UP VTR
CAPPED
TO HEAT EXCHANGER
7 AT MEZZ. LEVEL
(E)
Water
Heater
10"ø Steam UP
10" DN
3" DN
UP/DN
CAPPED
UP/DN
4" DN
6"ø Steam UP
(E) BOILER
FEED
WATER
PUMP 4
(E) BOILER
FEED
WATER
PUMP 1
(E) BOILER
FEED
WATER
PUMP 2
(E) BOILER
FEED
WATER
PUMP 3
10"ø Condensate
DN
FROM DEAERATOR
6" DN
6" DN
UP/DN
8" UP
(E) BOILER 1 (E) BOILER 2 (E) BOILER 3
(E) BOILER 4
TO HEAT EXCHANGER 5
6" UP
12" DN
10"ø Heating Water Return UP
10"ø Heating Water Return UP
TO HEAT EXCHANGER 1
TO HEAT EXCHANGER 3
1"ø FOR DN 1"ø FOS DN
1"ø FOR DN
1"ø FOS DN
1"ø FOS DN
1"ø FOR DN1"ø FOR DN
1"ø FOS DN
A B C D E F G H
Heating Water Supply Heating Water Return
Condensate Steam
3"ø Condensate UP
6" UP VTR
Scale
Date
Drawn By
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Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :3
P
M
M106
GROUND LEVEL
DEMOLITION PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
1/4" = 1'-0"
GROUND LEVEL DEMO
No. Description Date marks Callout
DEMOLISH EXISTING CONTROL SYSTEM INCLUDING ALL CONDUITS AND SENSING LINES
marks Callout ENGINEER TO CONFIRM PIPING SHOWN AS EXISTING-TO-REMAIN IS APPROPRIATE FOR CONTINUED SERVICE marks Callout
RE-FEED FUEL OIL PIPING TO NEW BOILER LOCATIONS
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
Mark Schow Text Box I. Anderson
Mark Schow Text Box M. Schow
Mark Schow Rectangle
Mark Schow Callout
DEMO EXISTING COLUMNS AND CATWALKS TO ACCOMODATE NEW BOILER LAYOUT
Mark Schow Rectangle
Mark Schow
OLD PLANT GENERATOR TO BE DEMOLISHED AND A NEW GAS FIRED GENERATOR LOCATED IN THE ALLEY.
DN
12"ø
"ø
"ø
"ø
10"ø
10"ø
12"ø
"ø
"ø
"ø
8"ø
"ø
6"ø
12"ø
6"ø
6"ø
12"ø
"ø6 "ø
"ø
12"ø
"ø
"ø
12"ø
"ø 6 "ø
"ø
"ø
12"ø
"ø
"ø
12"ø
12"ø
12"ø
"ø
8"ø3"ø
"ø
"ø
"ø
"ø
S te a m
C o n d e n sa te
High Press Steam
6" DN
6"ø Heating Water Return DN
(E)
DEAERATOR
6" DN
6" UP VTR
6" UP VTR
(E) BOILER 1 (E) BOILER 2 (E) BOILER 3
(E) BOILER 4
10" DN
10" DN
6" UP VTR
6" UP VTR
4" UP VTR
6"ø Heating Water Return DN
(E) HEAT
EXCHANGER
(E) HEAT
EXCHANGER
(E) HEAT
EXCHANGER
1 (E) HEAT
EXCHANGER
(E) HEAT
EXCHANGER
(E) HEAT
EXCHANGER
(E) HEAT
EXCHANGER
6" UP VTR
6" UP VTR
10"ø Heating Water Return DN
Heating Water Return
10" DN
(E) DUCT UP THRU ROOF (E) DUCT UP THRU ROOF
6"ø Heating Water Return DN
5"ø Condensate DN
12"ø Heating Water Return DN
3"ø Condensate DN
5"ø Steam DN 3"ø Condensate DN
Steam
A B C D E F G H
6" UP VTR
Heating Water Supply
Heating Water Return
4" UP VTR
5"ø PLG DN 4"ø PLG DN
P L G
P L G
Scale
Date
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :4
P
M
M107
MEZZANINE
DEMOLITION PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
1/4" = 1'-0"
MEZZANINE DEMO
No. Description Date marks Callout
EVALUATE EXISTING PIPING AND ELECTRICAL FOR REPLACEMENT (E.G., ROOF DRAINS)
marks Callout DEMOLISH ALL ABANDONED PIPING AND ELECTRICAL (E.G., CONTROL SYSTEM CONDUITS AND SENSING LINES) marks Callout
RETAIN UNH PLATE LOCATED ON BOILER
marks Rectangle marks Callout
SCOPE OF ROOF DEMOLITION ABOVE
marks Callout ENGINEER TO CONFIRM PIPING SHOWN AS EXISTING-TO-REMAIN IS APPROPRIATE FOR CONTINUED SERVICE marks Callout
REWORK NATURAL GAS AND PROCESSED LANDFILL GAS (PLG) TO FEED NEW BOILERS
marks Ellipse marks Ellipse marks Ellipse marks Ellipse marks Ellipse marks Ellipse marks Callout Safety relief vents to be demolished or reused marks Callout Safety relief vents to be demolished or reused
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
Mark Schow Text Box I. Anderson
Mark Schow
A B C D E F G H
(E) BOILER #4 STACK
Scale
Date
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
1/4" = 1'-0"
:1 :4
P
M
M108
ROOF DEMOLITION
PLAN
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
1/4" = 1'-0"
ROOF DEMO
No. Description Date marks Rectangle marks Callout COORDINATE ROOF ACCESS DURING CONSTUCTION AS THE ONLY CURRENT ROOF ACCESS IN JUNE 2026 IS THROUGH THIS DOOR.
CONSIDER NEW ACCESS POINTS.
EXISTING STAIRS ARE 2 FT WIDE AND ADDITIONAL WIDTH IS DESIRED.
marks Callout JUNE 2026 PROJECT IS ACTIVELY PROVIDING STAIRS TO THIS POINT, BUT WILL ONLY BE ACCESSIBLE BY A LADDER FROM THE COGEN BUILDING marks Callout
DEMO ROOF AND STRUCTURE FOR REMOVAL OF EXISTING BOILERS.
USE SAME OPENING TO INSTALL NEW BOILERS.
REFRAME STRUCTURE AND REINSTALL ROOF
marks Callout COORDINATE WITH UNH FOR GRADING AND CHANGES TO THE SITE AFTER DEMOLITION OF THE STACK marks Ellipse marks Ellipse marks Ellipse marks Ellipse marks Ellipse marks Ellipse marks Callout Safety relief vents to be demolished or reused marks Callout Safety relief vents to be demolished or reused
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
Mark Schow Text Box I. Anderson
Mark Schow
Scale
Date
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
:1 :4
P
M
M900
BASEMENT LEVEL
ISO
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
No. Description Date
BASEMENT ISO VIEW
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
Mark Schow Text Box I. Anderson
Mark Schow
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
:1 :4
P
M
M901
GROUND LEVEL ISO
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
No. Description Date
FIRST LEVEL ISO VIEW
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
Mark Schow Text Box I. Anderson
Mark Schow
Drawn By
Checked By
Project Number
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
Consultant
Address
Address
Address
Phone
:1 :5
P
M
M902
MEZZANINE UP
THRU ROOF ISO
UNIVERSITY OF
NEW HAMPSHIRE
BOILER PLANT
Checker
Author
Issue Date
Project Number
No. Description Date
MEZZANINE UP THRU ROOF ISO VIEW
Mark Schow Text Box A Bid Docs for Engineering Design 7/1/2026
Mark Schow Text Box 7/12/2026
Mark Schow Text Box I. Anderson
Mark Schow
| Sheets |
| M101 - BASEMENT NEW WORK PLAN |
| M102 - GROUND LEVEL NEW WORK PLAN |
| M103 - MEZZANINE NEW WORK PLAN |
| M104 - ROOF NEW WORK PLAN |
| M105 - BASEMENT DEMOLITION PLAN |
| M106 - GROUND LEVEL DEMOLITION PLAN |
| M107 - MEZZANINE DEMOLITION PLAN |
| M108 - ROOF DEMOLITION PLAN |
| M900 - BASEMENT LEVEL ISO |
| M901 - GROUND LEVEL ISO |
| M902 - MEZZANINE UP THRU ROOF ISO |
File details come from the government source that posted it. Updated .