511.22046.JBB_MECH.pdf

12 Ø

12x12

FIN TUBE RADIATION

HVAC SYMBOLS LEGEND

XX-X EQUIPMENT INDICATOR

CEILING DIFFUSER

LINEAR SLOT DIFFUSER

WALL DIFFUSER/GRILLE

FLOOR REGISTER

CEILING GRILLE

TURNING VANES

DUCT WIDTH x HEIGHT

ROUND DUCT DIAMETER

DIFFUSER INDICATOR

MANUAL VOLUME DAMPER

MOTORIZED DAMPER

FIRE DAMPER

SMOKE DAMPER

SMOKE AND FIRE DAMPER

THERMOSTAT

HUMIDISTAT

CONNECT TO EXISTING

M

H

T

DUCTS

OTHER SYMBOLSHVAC SYMBOLSDIFFUSERS & GRILLES

PIPING

(VERTICAL)(HORIZONTAL)

V D

101.1

MARK

FLOW

HOT WATER SUPPLY

1 1/2" - 2"

SEE NOTE 1

FIBERGLASS SELF SEALING W/PVC FITTING COVERS

HOT WATER RETURN FIBERGLASS SELF SEALING W/PVC FITTING COVERS

OUTSIDE AIR DUCT 2" FIBERGLASS TYPE ASJ

ITEM THICKNESS TYPE REMARKS

1. FOR PIPING NO LARGER THAN 1 1/4", INSULATION THICKNESS SHALL BE 1 1/2", FOR PIPING 1 1/2" AND

LARGER, INSULATION THICKNESS SHALL BE 2".

1 1/2" - 2"

SEE NOTE 1

INSULATION SCHEDULE

PROPOSED EXISTING DEMOLISH

EXHAUST AIR

OUTSIDE AIR

RETURN AIR

SUPPLY AIR

RECTANGLE ROUND

DROP RISE DROP RISE

RECTANGLE ROUND

DROP RISE DROP RISE DROP RISE DROP RISE

RECTANGLE ROUND

12"x12"

12"x12"

12"x12"

12"ø

12"ø

12"ø

12"ø

12"x12"

12"x12"

12"x12"

12"x12"

12"ø

12"ø

12"ø

12"ø

12"x12"

12"x12"

12"x12"

12"x12"

12"ø

12"ø

12"ø

12"øEA12"x12"

OA

RA

SA

EA

OA

RA

SA

EA

OA

RA

SA SA

RA

OA

EA

NEW EXISTING DEMOLISH

CHILLED WATER RETURN

CHILLED WATER SUPPLY

HEATING WATER RETURN

HEATING WATER SUPPLY

STEAM CONDENSATE

STEAM

NATURAL GAS

6"ø CWR

6"ø CWS

6"ø HWR

6"ø HWS

6"ø CND

6"ø STM

6"ø G

6"ø CWR

6"ø CWS

6"ø HWR

6"ø HWS

6"ø CND

6"ø STM

6"ø G

6"ø CWR

6"ø CWS

6"ø HWR

6"ø HWS

6"ø CND

6"ø STM

6"ø G

1. FIELD VERIFY LOCATIONS OF EXISTING PIPING THAT MAY CONFLICT WITH NEW CONSTRUCTION AND RELOCATE AS NEEDED.

2. COORDINATE LOCATIONS OF THE THERMOSTATS WITH OTHER TRADES.

3. PROVIDE BALANCE DAMPERS FOR EACH DIFFUSER/GRILLE AND BRANCH DUCT.

4. COORDINATE ROOF MOUNTED EQUIPMENT SIZES WITH ARCHITECTURAL TRADES PRIOR TO CONSTRUCTION.

5. THE CONTRACTOR SHALL FIELD VERIFY THE SIZES, LOCATION, ELEVATIONS, AND DETAILS OF ALL EXISTING CONDITIONS THAT MAY AFFECT THE WORK.

6. THE CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING THE INTEGRITY OF ALL EQUIPMENT AND MATERIALS IN A "NEW" CONDITION DURING

CONSTRUCTION.

7. ALL EXTERNALLY ISOLATED HVAC EQUIPMENT SHALL HAVE FLEXIBLE DUCT CONNECTORS.

8. ALL CONDENSATE DRAIN PIPING TO TERMINATE TO DRAIN VIA AIR GAP.

9. DRAWINGS INDICATE REQUIRED SIZES AND POINTS OF TERMINATION OF PIPES AND DUCTS AND SUGGESTED ROUTES. IT IS THE NOT INTENTION THE OF

DRAWINGS TO INDICATE ALL NECESSARY OFFSETS. INSTALL WORK IN MANNER TO CONFORM TO STRUCTURE, AVOID OBSTRUCTIONS, PRESERVE HEADROOM

AND KEEP OPENINGS AND PASSAGEWAYS CLEAR. DO NOT SCALE FROM DRAWINGS.

GENERAL NOTES - MECHANICAL

MARK DESCRIPTION BTU / HOUR CU FT / HOUR REMARKS

B-1 GAS FIRED BOILER 800,000 728

B-2 GAS FIRED BOILER 800,000 728

TOTALS 3,087,000 2,240

GAS LOAD SCHEDULE

EXISTING RANGE W/ BURNERS & OVEN

EXISTING RANGE W/ GRIDDLE TOP & OVEN

EXISTING DOUBLE DECK CONVECTION OVEN

EXISITNG KITCHEN WATER HEATER

152,000

152,000

110,000

199,000

250,000

227EXISTING ROOFTOP MAKEUP AIR

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/0 6/ xx xx

/x x/ xx xx xx

/x x/ xx

/0 6/

R

E V

IE

W

MECH. ABBR.

O

OA OUTSIDE AIR

P

P PUMP

PH ϕ PHASE

PRV PRESSURE REDUCING VALVE

PSI POUNDS PER SQUARE INCH

PSIG POUNDS PER SQUARE INCH GAUGE

R

R SUPPLY REGISTER

RA RETURN AIR

RAD RADIANT HEATER

RD ROUND DIFFUSER

RF RETURN FAN

RH GRAVITY RELIEF HOOD

RPM REVOLUTIONS PER MINUTE

S

SA SUPPLY AIR

SC STEAM COIL

SD SMOKE DAMPER

SF SUPPLY FAN

SP STATIC PRESSURE

STD STANDARD

STM STEAM

SWG SIDE WALL GRILLE

SWR SIDE WALL REGISTER

T

TYP TYPICAL

U

UH UNIT HEATER

V

V VENT

VAV VARIABLE AIR VOLUME

VD VANED DIFFUSER

W

WH WATER HEATER

WPD WATER PRESSURE DROP

MECH. ABBR.

FT FOOT / FEET

FTR FIN TUBE RADIATION

°F FAHRENHEIT DEGREE

G

G NATURAL / LP GAS

GA GAUGE

GPH GALLONS PER HOUR

GPM GALLONS PER MINUTE

H

HC HOT WATER COIL

HP HORSEPOWER

HPS HIGH PRESSURE STEAM

HRU HEAT RECOVERY UNIT

HVAC HEATING VENTILATING & AIR

CONDITIONING

HWR HEATING WATER RETURN

HWS HEATING WATER SUPPLY

HX HEAT EXCHANGER

I

IN INCH / INCHES

K

KH KITCHEN HOOD

L

L LOUVER

LAT LEAVING AIR TEMPERATURE

LDB LEAVING DRY BULB

LF LINEAL FEET

LPS LOW PRESSURE STEAM

LWB LEAVING WET BULB

LWT LEAVING WATER TEMPERATURE

M

MAX MAXIMUM

MBH THOUSAND BTU PER HOUR

MCA MINIMUM CIRCUIT AMPS

MIN MINIMUM

MISC MISCELLANEOUS

MTD MOUNTED

MUA MAKE-UP AIR UNIT

MECH. ABBR.

A

A AIR

AAV AUTOMATIC AIR VENT

AD ACCESS DOOR/PANEL

AFF ABOVE FINISH FLOOR

AHU AIR HANDLING UNIT

APD AIR PRESSURE DROP

AS AIR SEPARATOR

B

B BOILER

BDD BACK DRAFT DAMPER

BFP BACK FLOW PREVENTER

C

CFM CUBIC FEET PER MINUTE

CG CEILING GRID

CHR CHILLED WATER RETURN

CHS CHILLED WATER SUPPLY

CONV CONVECTOR

CR CONDENSATE RETURN

CU CONDENSING UNIT

CUH CABINET UNIT HEATER

D

DB DRY BULB

DIA Ø DIAMETER

DN DOWN

E

EA EXHAUST AIR

EAT ENTERING AIR TEMPERATURE

EDB ENTERING DRY BULB

EF EXHAUST FAN

ESP EXTERNAL STATIC PRESSURE

ET EXPANSION TANK

EWB ENTERING WET BULB

EWT ENTERING WATER TEMPERATURE

EXST EXISTING

F

FCU FAN COIL UNIT

FPM FEET PER MINUTE

FPS FEET PER SECOND

DN

1. ALL BIDDING CONTRACTORS ARE REQUIRED TO FIELD VERIFY EXISTING CONDITIONS AND DESIGN INTENT PRIOR TO SUBMITTING A BID. QUESTIONS OR COMMENTS SHALL BE SUBMITTED IN WRITING DURING THE BIDDING PHASE. NO ADDITIONAL COSTS TO THE PROJECT WILL BE ACCEPTED AFTER PROJECT AWARD FOR CHANGES DUE TO LACK OF KNOWLEDGE OF EXISTING CONDITIONS OR LACK OF

COORDINATION.

2. MECHANICAL CONTRACTOR IS RESPONSIBLE FOR COORDINATION THE PATCHING, CAPPING, OR REPAIRING OF WALLS AND ROOF WHERE OPENINGS OCCUR AS A RESULT OF REMOVAL OF MECHANICAL AND ELECTRICAL COMPONENTS AS PART OF THIS CONTRACT, UNLESS THE OPENING IS BEING RE-USED

OR ENLARGED IN THE RENOVATION WORK.

3. ROOF OPENINGS SHALL BE SEALED WEATHER-TIGHT AND WITH ROOFING MATERIALS COMPATIBLE WITH

EXISTING ROOF MEMBRANE.

4. ANY DEVICE/EQUIPMENT NO LONGER NEEDED SHALL BE PROPERLY DISPOSED OF.

5. ALL MECHANICAL PIPING INSULATION FOR DEMOLITION CONTAINS ASBESTOS. ALL ASBESTOS REMOVAL SHALL BE PERFORMED IN ACCORDANCE WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL LAWS AND

REGULATIONS.

MECHANICAL DEMOLITION NOTES

1"ø 1 1/2"ø

1 1/4"ø 2"ø

1 1/2"ø 2"ø

1"ø 1 1/2"ø

1 1/2"ø 1"ø

1 1/2"ø 1"ø

1 1/4"ø 2"ø

1 1/2"ø 1"ø

1"ø 1 1/2"ø

2"ø 3"ø

1"ø 1 1/2"ø

4"ø 4"ø

4"ø 2"ø

2"ø 2"ø

M-102

E X

1/ 2" ø H

W R

E X

1/ 2" ø H

W S

EX. 1 1/2"ø HWS EX. 2"ø HWS EX. 2"ø HWS

EX. 2"ø HWS

E X

2" ø H

W R

E X

2" ø H

W S

E X

2" ø H

W R

E X

2" ø H

W S

EX. 1 1/2"ø HWR

E X

3/

4" ø

H W

S E

X

1/

4" ø

H W

R E

X . 3

/4 "ø

H W

R E

X

1/

4" ø

H W

S

E X

1/ 2" ø H

W R

EX. 3/4"ø HWS

E X

3" ø H

W S

E X

1/ 4" ø H

W R

EX. 3"ø HWS

EX. 1 1/2"ø HWR

EX. 3"ø HWS

EX. 3"ø HWS

EX. 3"ø HWR

EX. 3"ø HWS EX. 2"ø HWR

EX. 2"ø HWR

EX. 3"ø HWR

010101

2"ø HWS

EX. 2 1/2"ø G

EX. 2 1/2"ø G

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3/32" = 1'-0"1

BASEMENT HVAC DEMOLITION PLAN

SHEET KEYNOTES - MECH. DEMOLITION

01 CONTRACTOR SHALL DEMOLISH STEAM UNIT HEATER AND ASSOCIATED PIPING AND CONTROLS.

02 CONTRACTOR SHALL DEMOLISH ABANDONED IN PLACE AIR HANDLER. DEMOLISH ALL ASSOCIATED

DUCTWORK, PIPING, AND CONTROL WIRING.

03 CONTRACTOR SHALL DEMOLISH 60x23 DUCT UP TO ROOF. PATCH AND REPAIR ROOF PENETRATION. SEAL

AIR AND WATER TIGHT

04 CONTRACTOR SHALL TRACE EXISTING 1-1/2" GAS PIPING AND DEMOLISH ALL ABANDONED IN PLACE GAS

PIPING. CONTRACTOR SHALL VERIFY EXACT LOCATIONS IN FIELD.

05 DEMOLISH EXISTING 30x15 DUCT. REFER TO RENOVATION PLANS FOR RE-USE OF EXISTING FLOOR

PENETRATION.

06 CONTRACTOR SHALL DEMOLISH 30x15 DUCT DOWN TO BASEMENT

07 DEMOLISH EXISTING CEILING FOR DEMOLITION AND RENOVATION WORK THIS AREA.

3/32" = 1'-0"2

1ST FLOOR HVAC DEMOLITION PLAN

DN

UH-7

1/2"ø HWR UP 1/2"ø HWS UP

T

1. ALL BIDDING CONTRACTORS ARE REQUIRED TO FIELD VERIFY EXISTING CONDITIONS AND DESIGN INTENT AND PERFORM A CONSTRUCTABILITY ANALYSIS PRIOR TO SUBMITTING A BID. QUESTIONS OR COMMENTS SHALL BE SUBMITTED IN WRITING DURING THE BIDDING PHASE. NO ADDITIONAL COSTS TO

THE PROJECT WILL BE ACCEPTED AFTER PROJECT AWARD FOR CHANGES DUE TO LACK OF

KNOWLEDGE OF EXISTING CONDITIONS OR LACK OF COORDINATION.

2. MECHANICAL CONTRACTOR IS RESPONSIBLE FOR PROVIDING MERV 8 CONSTRUCTION FILTERS AT THE AIR INLETS FOR AIR HANDLING EQUIPMENT OPERATED DURING CONSTRUCTION, AS WELL AS, ONE STANDARD FILTER CHANGE JUST PRIOR TO SUBSTANTIAL COMPLETION AND FINAL TEST AND BALANCE.

3. MECHANICAL CONTRACTOR IS RESPONSIBLE FOR COORDINATING THE TRIMMING AND RESEALING THE

WALLS, FLOORS, AND ROOFS WHERE OPENINGS OCCUR AS A RESULT OF NEW MECHANICAL AND

ELECTRICAL COMPONENTS AS PART OF THIS CONTRACT, INCLUDING TRIMMING OPENINGS BEING RE-

USED OR ENLARGED IN THE RENOVATION WORK.

MECHANICAL RENOVATION NOTES

E X

1/ 2" ø H

W R

E X

1/ 2" ø H

W S

EX. 1 1/2"ø HWS EX. 2"ø HWS EX. 2"ø HWS EX. 2"ø HWS

E X

2" ø H

W R

E X

2" ø H

W S

E X

2" ø H

W R

E X

2" ø H

W S

EX. 1 1/2"ø HWR

E X

3/

4" ø

H W

S E

X

1/

4" ø

H W

R E

X . 3

/4 "ø

H W

R E

X

1/

4" ø

H W

S

E X

1/ 2" ø H

W R

EX. 3/4"ø HWS

E X

3" ø H

W S

E X

1/ 4" ø H

W R

EX. 3"ø HWS

EX. 1 1/2"ø HWR

EX. 3"ø HWS

EX. 3"ø HWS

EX. 3"ø HWR

EX. 3"ø HWS EX. 2"ø HWR

EX. 2"ø HWR

EX. 3"ø HWR

UV-1 UV-1 UV-1 UV-1 UV-1 UV-1 UV-1 UV-1

RAD-B

RAD-B

RAD-B

RAD-B RAD-B RAD-B RAD-B

RAD-B

M-102

RAD-E

UV-2

RAD-E

RAD-H

RAD-A RAD-C

RAD-F

RAD-G

RAD-G UV-2

UV-2

UV-2

RAD-J

RAD-G

EX. 2"ø HWR

EX. 2"ø HWR

RAD-D

UH-1 UH-2

UH-3

UH-6

UH-5UH-4

UV-3

3/4"ø HWR 3/4"ø HWS

3/4"ø HWS 3/4"ø HWR

3/4"ø HWS 3/4"ø HWR

3/4"ø HWR 3/4"ø HWS

3/4"ø HWR 3/4"ø HWS

3/4"ø HWS

3/4"ø HWR

1 1/4"ø HWS 1 1/4"ø HWR

1 1/2"ø HWS 1 1/2"ø HWR

2"ø HWS 2"ø HWR

L-1

2 1/2"ø HWR 2 1/2"ø HWS

1/2"ø HWS DN 1/2"ø HWR DN

1/2"ø HWS 1/2"ø HWR

UH-8

UH-9

UH-10

UH-11

2"ø HWS

2 1/2"ø CW

2"ø HWS 2"ø HWR

1/2"ø HWR 1/2"ø HWS

1/2"ø HWR 1/2"ø HWS

T

T

TUV-3

T

T

T

T

2 1/2"ø HWR 2 1/2"ø HWS

EX. 2 1/2"ø G

EX. 2 1/2"ø G

1 1/2"ø G

EX. 2"ø G

EX. 2 1/2"ø G

ASSEMBLY HALL

PASSAGE

OFFICE

CLASS RM

SCULLERY AREA

FOOD SERVICE AREA

106A

UNIT STORAGE

UNIT STORAGE

UNIT STORAGE

BREAK RM

E.M. TOILET

UTILITY RM

DRYING

SHOWER

UNIT STORAGE

SIGNAL RM

STRONG RM

FEMALE DRYING ROOM

121B FEMALE LOUNGE

CLASS RM

126LOBBY.

CORRIDOR

LIBRARY & DAY RM

VESTIBULE

ORDERLY RM

OFFICE

LIEUT OFFICE

TOILET

2 1/2"ø G

VEHICLE STORAGE

107A

CU-1

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3/32" = 1'-0"2

BASEMENT HVAC PLAN

3/32" = 1'-0"1

1ST FLOOR HVAC PLAN

1/8" = 1'-0"3

112 ASSEMBLY ROOF PLAN

SHEET KEYNOTES - MECH. PLAN

01 EXISTING 2" GAS TO EXISTING KITCHEN EQUIPMENT AND ROOFTOP MAKEUP AIR UNIT. REFER TO GAS

LOAD SCHEDULE ON SHEET M-001.

02 EXISTING 1-1/2" GAS TO EXISTING KITCHEN WATER HEATER. REFER TO GAS LOAD SCHEDULE ON SHEET M-001.

03 ALTERNATE #1. CONNECT TO EXISTING 2-1/2" GAS LINE AND PROVIDE TEMPORARY GAS UNIT HEATERS IN

VEHICLE STORAGE. CONFIRM QUANTITY, SIZE, AND LOCATION WITH OWNER.

1. ALL BIDDING CONTRACTORS ARE REQUIRED TO FIELD VERIFY EXISTING CONDITIONS AND DESIGN INTENT AND PERFORM A CONSTRUCTABILITY ANALYSIS PRIOR TO SUBMITTING A BID. QUESTIONS OR COMMENTS SHALL BE SUBMITTED IN WRITING DURING THE BIDDING PHASE. NO ADDITIONAL COSTS TO

THE PROJECT WILL BE ACCEPTED AFTER PROJECT AWARD FOR CHANGES DUE TO LACK OF

KNOWLEDGE OF EXISTING CONDITIONS OR LACK OF COORDINATION.

2. MECHANICAL CONTRACTOR IS RESPONSIBLE FOR PROVIDING MERV 8 CONSTRUCTION FILTERS AT THE AIR INLETS FOR AIR HANDLING EQUIPMENT OPERATED DURING CONSTRUCTION, AS WELL AS, ONE STANDARD FILTER CHANGE JUST PRIOR TO SUBSTANTIAL COMPLETION AND FINAL TEST AND BALANCE.

3. MECHANICAL CONTRACTOR IS RESPONSIBLE FOR COORDINATING THE TRIMMING AND RESEALING THE

WALLS, FLOORS, AND ROOFS WHERE OPENINGS OCCUR AS A RESULT OF NEW MECHANICAL AND

ELECTRICAL COMPONENTS AS PART OF THIS CONTRACT, INCLUDING TRIMMING OPENINGS BEING RE-

USED OR ENLARGED IN THE RENOVATION WORK.

MECHANICAL RENOVATION NOTES

B-1

B-2

P-4

P-5

P-3P-2

P-1

P-6

DWH-1

2 1/2"ø HWS

4"ø CW DN

EX. 2 1/2"ø CW

2"ø HW

2" ø

H W

4"ø G

AS-12"ø HWS

2 1/2"ø HWS

3"ø HWR

3" ø

H W

S

2 1/2"ø HWR

2 1/2"ø HWS

2"ø CW 3"ø HWS

3"ø HWR

3"ø HWS 3"ø HWR

4"ø HWR

4"ø HWS

4"ø HWS

4"ø HWR

ET-1

3/ 4" ø C

W

BACKFLOW PREVENTER

3/ 4" ø C

W

2" ø

C W

1 1/2"ø G 1 1/2"ø G

3"ø G

1/

2" ø

G

2 1/2"ø HWS EX. 2 1/2"ø G 2 1/2"ø HWR

EX. 2"ø HWS EX. 2"ø HWR

8" ø

2" ø

"ø

4"ø

2"ø

1 1/2"ø 2 1/2"ø

4"ø CW

2 1/2"ø CW

2"ø

2"ø

1/

2" ø

2" ø

3" ø

2" ø

3"ø 2"ø

6"ø

8" ø2

1/ 2" ø

2" ø

1 1/2"ø

2 1/2"ø2 1/2"ø G

1. ALL BIDDING CONTRACTORS ARE REQUIRED TO FIELD VERIFY EXISTING CONDITIONS AND DESIGN INTENT PRIOR TO SUBMITTING A BID. QUESTIONS OR COMMENTS SHALL BE SUBMITTED IN WRITING DURING THE BIDDING PHASE. NO ADDITIONAL COSTS TO THE PROJECT WILL BE ACCEPTED AFTER PROJECT AWARD FOR CHANGES DUE TO LACK OF KNOWLEDGE OF EXISTING CONDITIONS OR LACK OF

COORDINATION.

2. MECHANICAL CONTRACTOR IS RESPONSIBLE FOR COORDINATION THE PATCHING, CAPPING, OR REPAIRING OF WALLS AND ROOF WHERE OPENINGS OCCUR AS A RESULT OF REMOVAL OF MECHANICAL AND ELECTRICAL COMPONENTS AS PART OF THIS CONTRACT, UNLESS THE OPENING IS BEING RE-USED

OR ENLARGED IN THE RENOVATION WORK.

3. ROOF OPENINGS SHALL BE SEALED WEATHER-TIGHT AND WITH ROOFING MATERIALS COMPATIBLE WITH

EXISTING ROOF MEMBRANE.

4. ANY DEVICE/EQUIPMENT NO LONGER NEEDED SHALL BE PROPERLY DISPOSED OF.

5. ALL MECHANICAL PIPING INSULATION FOR DEMOLITION CONTAINS ASBESTOS. ALL ASBESTOS REMOVAL SHALL BE PERFORMED IN ACCORDANCE WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL LAWS AND

REGULATIONS.

MECHANICAL DEMOLITION NOTES

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COPYRIGHT 2022 OHM ALL DRAWINGS AND WRITTEN MATERIALS APPEARING HEREIN CONSTITUTE THE ORIGINAL AND UNPUBLISHED WORK OF OHM AND THE SAME MAY NOT BE DUPLICATED, DISTRIBUTED, OR DISCLOSED WITHOUT PRIOR WRITTEN CONSENT OF OHM

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1/4" = 1'-0"2

ENLARGED BOILER ROOM HVAC RENOVATION PLAN

SHEET KEYNOTES - MECH. PLAN

01 CONNECT NEW 4" GAS AT GAS METER. CONTRACTOR TO COORDINATE METER AND MAIN REGULATOR

UPGRADE WITH GAS UTILITY.

02 4"ø INTAKE THROUGH EXTERIOR METAL PANEL. REFER TO MANUFACTURER FOR INSTALLATION

INSTRUCTIONS.

03 6" VENT THROUGH ROOF. REFER TO MANUFACTURER FOR INSTALLATION INSTRUCTIONS. MAINTAIN ROOF

WARRANTY.

04 NEW CONTROL'S CABINET.

1/4" = 1'-0"1

ENLARGED BOILER ROOM HVAC DEMOLITION PLAN

SHEET KEYNOTES - MECH. DEMOLITION

01 CONTRACTOR SHALL DEMOLISH BOILER AND ASSOCIATED HOUSEKEEPING PAD. CONTRACTOR SHALL DEMOLISH ALL ASSOCIATED STEAM PIPING, CONDENSATE PIPING, COMBUSTION INTAKE, AND FLUE

EXHAUST.

02 CONTRACTOR SHALL DEMOLISH ABANDONED STORAGE TANK AND ALL ASSOCIATED PIPING.

03 CONTRACTOR SHALL DEMOLISH HEAT EXCHANGER AND ALL ASSOCIATED STEAM AND CONDENSATE

PIPING. DEMOLISH HOT WATER SUPPLY AND RETURN PIPING TO POINT SHOWN.

04 CONTRACTOR SHALL DEMOLISH EXPANSTION TANKS AND ALL ASSOCIATED PIPING.

05 CONTRACTOR SHALL DEMOLISH CONDENSATE PUMP AND ALL ASSOCIATED PIPING.

06 CONTRACTOR SHALL SEAL WALL PENETRATION AIR AND WATER TIGHT WITH INSULATED METAL PANEL TO

MATCH EXISTING FACADE.

07 DEMOLISH EXISTING 20x8 INTAKE DUCT. SEAL WALL PENETRATION AIR AND WATER TIGHT WITH

INSULATED METAL PANEL TO MATCH EXISTING FACADE.

08 CONTRACTOR SHALL DEMOLISH EXISTING WATER HEATER. DEMOLISH ALL DOMESTIC COLD WATER PIPING AND GAS PIPING BACK TO MAIN AND CAP. DEMOLISH DOMESTIC HOT WATER PIPING BACK TO

POINT SHOWN.

09 CONTRACTOR SHALL DEMOLISH GAS PIPING BACK TO GAS MAIN. EXISTING SMART METER SHALL REMAIN.

10 EXISTING PUMP SHALL REMAIN.

11 APPROXIMATELY 76x44 LOUVER SHALL BE DEMOLISHED. DEMOLISH ALL CONTORL WIRING.

EXPANSION

TANK

B-2

AIR SEPARATOR

STRAINER

BACK FLOW

PREVENTER AT

SERVICABLE

HEIGHT AND

LOCATION

COLD

WATER LINE

MANUAL FILL VALVE

PRESSURE

REDUCING

VALVE

COLD DOMESTIC

WATER LINE

BALL VALVE

DIELECTRIC UNION, TYP

THERMOMETER

ST-1

BFP

S

HOT WATER

SUPPLY

SYSTEM

RETURN

RELIEF

VALVE

MIXING

VALVE

TEMPERED HOT

WATER SUPPLY

STORAGE TANK W/

INTERNAL DOUBLE WALL

HEAT EXCHANGER

12" M

AX

CHECK

VALVE

T/P RELIEF VALVE

T

POTABLE WATER

EXPANSION TANK

AUTO AIR VENT

B-1

RELIEF

VALVE

CHECK

VALVE

P-4

P-5

P-6

P-1

P-2

P-3

HOT WATER

SUPPLY

HOT WATER

SUPPLY

HWR

HWS

UNION

1/2" DRAIN VALVE

AQUASTAT

MODULATING

CONTROL VALVE

BALL VALVE

HOT WATER SUPPLY

AND RETURN PIPING

COMBINATION

BALANCE/SHUT-OFF

VALVE

AIR VENT

HORIZONTAL & VERTICAL

DEFLECTORS

EXHAUST TERMINAL

FLUE EXHAUST PIPE

COMBUSTION AIR INLET

TYPE "B" OR CLASS

"A" VENT PIPE

STORM

COLLAR

TALL CONE

FLASHING

W/CLAMPING

COLLAR

1" OR 2" MIN CLEARANCE

MEMBRANE

FLASHING

SUPPORT VENT

PIPE WITH METAL

STRAPS AND

FASTEN TO

STRUCTURE BY

M.C.

STEEL ANGLE FRAME

ALL AROUND OPENING

3'-0" ABOVE ROOF MIN

CHARGING

VALVE

ISOLATION

VALVES

FILTER-DRIER

SOLENOID STOP VENT

SIGHT GLASS

ISOLATION VALVES

REMOTE BULB

THERMOSTATIC EXPANSION VALVE

TRAP

COOLING COIL

CONDENSER

EXPANSION

TANK

AIR SEPARATOR

BACK FLOW

PREVENTER AT

SERVICABLE

HEIGHT AND

LOCATION

COLD

WATER LINE

MANUAL FILL VALVE

PRESSURE

REDUCING

VALVE

BFP

S

HOT WATER

SUPPLY

SYSTEM

RETURN

12" M

AX

AUTO AIR VENT

P-1

P-2

HOT WATER

SUPPLY

HEATING HOT WATER SUPPLY AND

RETURN TO AND FROM TEMPORARY

BOILERS. COORDINATE WITH OWNER

ON EXACT LOCATION.

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ARCHITECTS ENGINEERS PLANNERS

OHM-ADVISORS.COM

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PH 906.482.0535 | F 906.482.6453

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COPYRIGHT 2022 OHM ALL DRAWINGS AND WRITTEN MATERIALS APPEARING HEREIN CONSTITUTE THE ORIGINAL AND UNPUBLISHED WORK OF OHM AND THE SAME MAY NOT BE DUPLICATED, DISTRIBUTED, OR DISCLOSED WITHOUT PRIOR WRITTEN CONSENT OF OHM

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N.T.S1

BOILER PIPING DETAIL

N.T.S4

HOT WATER UNIT HEATER DETAIL

12" = 1'-0"5

COMBUSTION AIR-VENT DETAIL (FLAT ROOF)

12" = 1'-0"3

REFRIGERANT PIPING DETAIL

12" = 1'-0"2

BOILER PIPING DETAIL - ALTERNATE #1

AIR SEPARATOR SCHEDULE

MAX MAX PRESSURE CONNECTION

MARK SERVICE LOCATION FLUID GPM DROP (FT-WG) SIZE MANUFACTURER MODEL NOTES

AS-1 HEATING HOT WATER 124 BOILER RM. WATER 300 3 4"ø BELL & GOSSETT R-4F 1-3

NOTES: 1. CONTRACTOR SHALL PROVIDE INSULATION AND JACKETING ON AIR SEPARATOR TO MATCH THE HYDRONIC PIPING.

2. PROVIDE DRAIN VAVLE, MOUNTING BRACKETS, AND HIGH CAPACITY AIR VENT.

3. AIR SEPARATOR MUST REMOVE 100% OF VISIBLE AIR AND 99.6% OF DISSOLVED AIR.

GAS FIRED BOILER SCHEDULE

CAPACITY MAX OPP. HEAD LOSS ELECTRICAL CONNECTIONS

MARK LOCATION TYPE GAS INPUT HOT WATER OUTPUT PRESSURE GPM EWT (°F) LWT (°F) (FT) V/PH/HZ FLA / MCA FLUE COMB. AIR MANUFACTURER MODEL NOTES

B-1 124 BOILER RM. WATER TUBE CONDENSING 800 MBH 776 MBH 160 PSIG 76 160 180 17 120/1/60 4.3 / 5.4 6"ø 4" ø LOCHINVAR KBX0800 SEE ALL

B-2 124 BOILER RM. WATER TUBE CONDENSING 800 MBH 776 MBH 160 PSIG 76 160 180 17 120/1/60 4.3 / 5.4 6"ø 4" ø LOCHINVAR KBX0800 SEE ALL

NOTES: 1. ON-BOARD CONTROLLER.

2. PROVIDE ALL NECESSARY BOILER TRIM FOR A COMPLETE AND FUNCTIONAL SYSTEM. REFER TO MANUFACTURER'S INSTALLATION INSTRUCTIONS.

3. PROVIDE WITH BOILER CIRCULATOR (P-4).

4. PROVIDE WITH BOILER CIRCULATOR (P-5).

EXISTING RADIATOR SCHEDULE

MARK QUANTITY MBH SIZE LENGTH ELEMENT HEIGHT

RAD-A 1 36.12 1-1/4" 21'-0" 2 ROWS

RAD-B 5 19.08 1-1/4" 12'-0" 2 ROWS

RAD-C 1 18.92 1-1/4" 11'-0" 2 ROWS

RAD-D 1 15.48 1-1/4" 9'-0" 2 ROWS

RAD-E 1 15.12 1-1/4" 8'-0" 2 ROWS

RAD-F 1 12.04 1-1/4" 7'-0" 2 ROWS

RAD-G 3 9.7 1-1/4" 4'-0" 3 ROWS

RAD-H 1 6.88 1-1/4" 4'-0" 2 ROWS

RAD-J 1 4.85 1-1/4" 2'-0" 3 ROWS

NOTE: INFORMATION TAKEN FROM RECORD DRAWINGS DATED 04/08/1955.

EXISTING UNIT VENTILATOR SCHEDULE

MARK QUANTITY CFM MINIMUM O.A. HEATING CAPACITY (MBH) AVERAGE WATER TEMP (°F)

UV-1 8 750 25% 51.3 170

UV-2 4 750 25% 51.3 170

NOTE: INFORMATION TAKEN FROM RECORD DRAWINGS DATED 04/08/1955.

EXPANSION TANK SCHEDULE

MARK SERVICE LOCATION FLUID CAPACITY ACCEPTANCE MANUFACTURER MODEL NOTES

ET-1 HEATING HOT WATER 124 BOILER RM. WATER 14 GALLONS 11.3 GALLONS BELL & GOSSETT HFT-30V 1-2

NOTES: 1. EXPANSION TANK SHALL BE PROVIDED WITH PURGE VALVE

2. TANK SHALL BE PRE-CHARGED AT MINIMUM 12 PSI.

LOUVER SCHEDULE

MAX PRESS. MINIMUM

MARK SERVICE CFM SIZE (IN.) DROP (IN-WG) FREE AREA MANUFACTURER MODEL NOTES

L-1 UV-1 1,400 72x16 0.05 2.9 GREENHECK ESD-635 SEE ALL

NOTES: 1. PROVIDE WITH ALUMINUM BIRDSCREEN.

PUMP SCHEDULE

PUMP CONNECTIONS MOTOR DATA

MARK CONDITION SERVICE LOCATION TYPE FLUID GPM HEAD (FT) MIN NPSHR (FT) MIN EFF (%) SUCTION DISCHARGE HP RPM V/PH/HZ STARTER MANUFACTURER MODEL NOTES

P-1 EXISTING HWS/R BOILER RM IN-LINE WATER 38 --- --- --- --- --- --- --- --- --- --- ---

P-2 EXISTING HWS/R BOILER RM IN-LINE WATER 55 --- --- --- --- --- --- --- --- --- --- ---

P-3 NEW HWS/R BOILER RM IN-LINE WATER 45 35 3 57 1-1/2" 1-1/2" 1 1723 208/3/60 VFD BELL & GOSSETT E-80 1.5x1.5x7C 1

P-4 NEW B-1 BOILER RM IN-LINE WATER 76 25 --- 52 2-1/2" 2-1/2" 1 2883 208/1/60 ECM BELL & GOSSETT ECOCIRC XL 40-200

P-5 NEW B-2 BOILER RM IN-LINE WATER 76 25 --- 52 2-1/2" 2-1/2" 1 2883 208/1/60 ECM BELL & GOSSETT ECOCIRC XL 40-200

P-6 NEW DWH-1 BOILER RM IN-LINE WATER 14 10 --- 48 1.25" 1.25" 1/6 2455 120/1/60 ECM BELL & GOSSETT ECOCIRC XL 36-45

NOTES: 1. PROVIDE WITH OPTIONAL INTEGRATED VFD CONTROLLER

HYDRONIC UNIT HEATER SCHEDULE

HOT WATER ELECTRICAL

MARK SERVICE CFM CAPACITY GPM WPD (FT-WG) EWT / LWT (°F) V/PH/HZ HP MANUFACTURER MODEL NOTES

UH-1 107 VEHICLE STORAGE 1,155 42.6 4.4 0.5 180 / 160 120/1/60 1/30 MODINE V59 1

UH-2 107 VEHICLE STORAGE 1,155 42.6 4.4 0.5 180 / 160 120/1/60 1/30 MODINE V59 1

UH-3 107 VEHICLE STORAGE 1,155 42.6 4.4 0.5 180 / 160 120/1/60 1/30 MODINE V59 1

UH-4 107 VEHICLE STORAGE 1,155 42.6 4.4 0.5 180 / 160 120/1/60 1/30 MODINE V59 1

UH-5 107 VEHICLE STORAGE 1,155 42.6 4.4 0.5 180 / 160 120/1/60 1/30 MODINE V59 1

UH-6 107 VEHICLE STORAGE 1,155 42.6 4.4 0.5 180 / 160 120/1/60 1/30 MODINE V59 1

UH-7 BASEMENT 370 16.2 1.7 0.8 180 / 160 120/1/60 1/25 MODINE HC24

UH-8 111 STAIR 340 12.6 1.3 0.5 180 / 160 120/1/60 1/60 MODINE HSB18

UH-9 115 DRYING 340 12.6 1.3 0.5 180 / 160 120/1/60 1/60 MODINE HSB18

UH-10 116 UTILITY 340 12.6 1.3 0.5 180 / 160 120/1/60 1/60 MODINE HSB18

UH-11 120 STORAGE 340 12.6 1.3 0.5 180 / 160 120/1/60 1/60 MODINE HSB18

NOTES: 1. MOUNT UNIT HEATER AT EQUAL ELEVATION OF STRUCTURAL TRUSSES.

UNIT VENTILATOR SCHEDULE

DX COOLING HOT WATER HEATING ELECTRICAL

MARK LOCATION SA CFM OA CFM GROSS MBH EAT (DB/WB) LAT (DB/WB) GPM MBH WPD (FT-WG) EWT / LWT (°F) EAT / LAT V/PH/HZ HP MANUFACTURER MODEL NOTES

UV-3 112 BREAK ROOM 1,400 320 48 75.7 / 64.7 53 / 52.9 5.3 53 15.6 180 / 160 60.5 / 95.0 208/1/60 1 TRANE HUVC15020 SEE ALL

NOTES: 1. PROVIDE PUMP FOR CONDENSATE DISPOSAL.

2. UNIT SHALL BE CEILING MOUNTED, EXPOSED, WITH REAR CONNECTION FOR OUTSIDE AIR.

CONDENSING UNIT SCHEDULE

COMPRESSOR ELECTRICAL

MARK SERVICE LOCATION MBH QTY NO. STAGES V/PH/HZ MCA MOCP MANUFACTURER MODEL NOTES

CU-1 UV-3 ROOF 48 1 2 208/3/60 18 30 TRANE 4TTR7048A

DOMESTIC WATER HEATER SCHEDULE

STORAGE FIRST HR. CONTINOUS FRICTION

MARK LOCATION TYPE CAPACITY FLOW IN RATING DRAW RATING LOSS (FT HD) MANUFACTURER MODEL

DWH-1 BOILER RM. INDIRECT 113 GALLONS 14 GPM 280 GPH 174 GPH 6 LOCHINVAR SIT119DW

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ARCHITECTS ENGINEERS PLANNERS

OHM-ADVISORS.COM

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424 Hancock Street Hancock, MI 49930

PH 906.482.0535 | F 906.482.6453

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OHM PROJECT No.

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COPYRIGHT 2022 OHM ALL DRAWINGS AND WRITTEN MATERIALS APPEARING HEREIN CONSTITUTE THE ORIGINAL AND UNPUBLISHED WORK OF OHM AND THE SAME MAY NOT BE DUPLICATED, DISTRIBUTED, OR DISCLOSED WITHOUT PRIOR WRITTEN CONSENT OF OHM

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BOILER

BV - BOILER STATUS

AV - BURNER CYCLES

T

T

AV - HOT WATER RETURN TEMP

AV - HOT WATER SUPPLY TEMP

AV - OPERATING TEMP

AV - OPERATING PRESSURE

AV - OPERATING HOURS

AV - HOT WATER SUPPLY TEMP SETPOINT

BV - HOT WATER FLOW STATUS

HWS

HWR

P-5

P-1

BOILER

BV - BOILER STATUS

AV - BURNER CYCLES

T

T

AV - HOT WATER RETURN TEMP

AV - HOT WATER SUPPLY TEMP

AV - OPERATING TEMP

AV - OPERATING PRESSURE

AV - OPERATING HOURS

AV - HOT WATER SUPPLY TEMP SETPOINT

BV - HOT WATER FLOW STATUS

P-4

P-2 P-3

WHEN THE OUTSIDE AIR TEMPERATURE IS BELOW 40°F (ADJUSTABLE) THE LEAD HOT WATER PUMP P-1 (ADJ) SHALL RUN. IF THE LEAD HOT WATER PUMP P-1 FAILS THE LAG HOT WATER PUMP P-2 (ADJ) SHALL RUN. THE LEAD AND LAG

PUMPS SHALL ALTERNATE EVERY WEEK.

WHEN THE MAIN SYSTEM RETURN TEMPERATURE DROPS BELOW SETPOINT (ADJUSTABLE) THE BOILERS SHALL BE ENABLED IN A LEAD-LAG CYCLE. DURING A CALL FOR HEATING TO THE SECONDARY LOOP THE BOILERS SHALL BE STAGED FOR THE LEAD BOILER AND ITS ASSOCIATED PUMP SHALL BE ENABLED AND FIRE TO A RATE OF 80% (ADJUSTABLE). ONCE THE FIRING RATE IS ACHIEVED THE LAG BOILER SHALL BE ENABLED ALONG WITH THE ASSOCIATED PUMP. THE BOILER SEQUENCER SHALL MODULATE THE FIRING RATES OF THE BOILER(S) TO OPTIMIZE EFFICIENCY. THE OUTSIDE TEMPERATURE SHALL DICTATE A SUPPLY TEMPERATURE RESET SCHEDULE.

ON A DROP BELOW SET POINT (ADJUSTABLE) IN THE DOMESTIC WATER HEATER (DWH-1), THE DOMESTIC HOT WATER VALVE (V-1) SHALL OPEN, AND PUMP P-6 SHALL BE ENERGIZED, AND BOILER B-1 AND ITS ASSOCIATED CIRCULATOR

PUMP SHALL BE ENABLED TO MAINTAIN BOILER WATER RETURN TEMPERATURE (ADJUSTABLE).

ALARMS SHALL BE GENERATED ON THE FAILURE OF PUMPS P-1, P-2, OR P-3, HOT WATER HEATING RETURN TEMPERATURE BELOW SETPOINT FOR A PERIOD OF 1 HOUR (ADJUSTABLE), AND ANY BOILER GENERAL ALARMS.

P-6

DWH-1

V-1

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HOT WATER COIL VALVEAO

BOFAN START/STOP

M

ZONE SETPOINT ADJUSTAI

ZONE TEMPERATUREAO

T

UNIT HEATER SEQUENCE OF OPERATION:

RUN CONDITIONS - SCHEDULED:

THE UNIT SHALL RUN ACCORDING TO A USER DEFINABLE TIME SCHEDULE IN THE FOLLOWING MODES:

OCCUPIED MODE: THE UNIT SHALL MAINTAIN A HEATING SETPOINT OF 70°F (ADJ).

UNOCCUPIED MODE (NIGHT SETBACK): THE UNIT SHALL MAINTAIN A HEATING SETPOINT OF 60°F (ADJ).

ALARMS SHALL BE PROVIDED AS FOLLOWS:

LOW ZONE TEMP: IF THE ZONE TEMPERATURE IS LESS THAN THE HEATING SETPOINT BY A USER DEFINABLE AMOUNT (ADJ).

ZONE SETPOINT ADJUST:

THE OCCUPANT SHALL BE ABLE TO ADJUST THE ZONE TEMPERATURE HEATING SETPOINTS AT THE ZONE SENSOR.

FAN:

THE FAN SHALL RUN ANYTIME THE ZONE TEMPERATURE DROPS BELOW THE HEATING SETPOINT, UNLESS SHUTDOWN ON SAFETIES.

HOT WATER COIL VALVE:

THE CONTROLLER SHALL MEASURE THE ZONE TEMPERATURE AND MODULATE THE HEATING COIL VALVE TO MAINTAIN ITS HEATING SETPOINT.

THE HEATING SHALL BE ENABLED WHENEVER:

OUTSIDE AIR TEMPERATURE IS LESS THAN 60°F (ADJ.) AND THE ZONE TEMPERATURE IS BELOW HEATING SETPOINT AND THE FAN IS ON.

H W

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GRAVITY BACKDRAFT DAMPER

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HOT WATER

COIL VALVE

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CHILLED WATER

COIL VALVE

SPACE

TEMPERATURE

T SP

SPACE

SETPOINT

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OUTSIDE AIR

DAMPER

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SUPPLY FAN

STATUS

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BOSUPPLY FAN VFD START/STOP

SUPPLY FAN VFD SPEED

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DISCHARGE AIR

TEMPERATURE

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MIXED AIR

TEMPERATURE

BO

CONDENSOR

UNIT VENTILATOR WITH COOLING SEQUENCE OF OPERATION:

RUN CONDITIONS - SCHEDULED:

THE UNIT SHALL RUN ACCORDING TO A USER DEFINABLE TIME SCHEDULE IN THE FOLLOWING MODES:

OCCUPIED MODE: THE UNIT SHALL MAINTAIN A 75°F (ADJ.) COOLING SETPOINT AND A 70°F (ADJ.) HEATING SETPOINT.

UNOCCUPIED MODE: THE UNIT SHALL MAINTAIN A 70°F (ADJ.) COOLING SETPOINT AND A 70°F (ADJ.) HEATING SETPOINT.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

HIGH ZONE TEMP: IF THE ZONE TEMPERATURE IS GREATER THAN THE COOLING SETPOINT BY A USER DEFINABLE AMOUNT (ADJ.).

LOW ZONE TEMP: IF THE ZONE TEMPERATURE IS LESS THAN THE HEATING SETPOINT BY A USER DEFINABLE AMOUNT (ADJ.).

ZONE SETPOINT ADJUST:

THE OCCUPANT SHALL BE ABLE TO ADJUST THE ZONE TEMPERATURE HEATING AND COOLING SETPOINTS AT THE ZONE SENSOR.

ZONE OPTIMAL START:

THE UNIT SHALL USE AN OPTIMAL START ALGORITHM FOR MORNING START-UP. THIS ALGORITHM SHALL MINIMIZE THE UNOCCUPIED WARM-UP OR COOL-DOWN PERIOD WHILE STILL ACHIEVING COMFORT CONDITIONS BY THE START OF SCHEDULED OCCUPIED PERIOD.

ZONE UNOCCUPIED OVERRIDE:

A TIMED LOCAL OVERRIDE CONTROL SHALL ALLOW AN OCCUPANT TO OVERRIDE THE SCHEDULE AND PLACE THE UNIT INTO AN OCCUPIED MODE FOR AN ADJUSTABLE PERIOD OF TIME. AT THE EXPIRATION OF THIS TIME, CONTROL OF THE UNIT SHALL AUTOMATICALLY RETURN TO THE SCHEDULE.

FREEZE PROTECTION:

THE UNIT SHALL SHUT DOWN AND GENERATE AN ALARM UPON RECEIVING A FREEZESTAT STATUS.

FAN:

THE FAN SHALL RUN ANYTIME THE UNIT IS COMMANDED TO RUN UNLESS SHUTDOWN ON SAFETIES.

HEATING COIL VALVE:

THE CONTROLLER SHALL MEASURE THE ZONE TEMPERATURE AND MODULATE THE HEATING COIL VALVE TO MAINTAIN ITS HEATING SETPOINT.

THE HEATING SHALL BE ENABLED WHENEVER THE OUTSIDE AIR TEMPERATURE IS LESS THAN 65°F (ADJ.) AND THE ZONE TEMPERATURE IS BELOW HEATING SETPOINT

AND THE FAN IS ON.

THE HEATING COIL VALVE SHALL OPEN WHENEVER THE FREEZESTAT (IF PRESENT) IS ON.

ECONOMIZER:

THE CONTROLLER SHALL MEASURE THE ZONE TEMPERATURE AND MODULATE THE MIXED AIR DAMPERS IN SEQUENCE TO MAINTAIN THE ZONE COOLING SETPOINT.

THE OUTSIDE AIR DAMPERS SHALL MAINTAIN A MINIMUM ADJUSTABLE POSITION OF 20% (ADJ.) OPEN DURING HEATING AND VENTILATION WHENEVER OCCUPIED.

THE ECONOMIZER SHALL BE ENABLED WHENEVER THE OUTSIDE AIR TEMPERATURE IS AT LEAST 3°F (ADJ.) LESS THAN THE ZONE TEMPERATURE AND THE OUTSIDE

AIR TEMPERATURE IS LESS THAN 75°F (ADJ.)

THE ECONOMIZER SHALL CLOSE WHENEVER THE FREEZESTAT IS ON.

THE OUTSIDE AIR DAMPERS SHALL CLOSE AND THE RETURN AIR DAMPER SHALL OPEN WHEN THE UNIT IS OFF. IF OPTIMAL START UP IS AVAILABLE THE MIXED AIR DAMPER SHALL OPERATE AS DESCRIBED IN THE OCCUPIED MODE EXCEPT THAT THE OUTSIDE AIR DAMPER SHALL MODULATE TO FULLY CLOSED.

THE CONTROLLER SHALL MONITOR THE DISCHARGE AIR TEMPERATURE. SHOULD DISCHARGE TEMPERATURE DROP BELOW A USER DEFINABLE TEMPERATURE (ADJ.), THE CONTROLLER SHALL ENABLE THE HEATING, CLOSE THE OUTSIDE DAMPER AND OPEN THE RETURN DAMPER.

MINIMUM OUTSIDE AIR VENTILATION - FIXED PERCENTAGE:

THE OUTSIDE AIR DAMPERS SHALL MAINTAIN A MINIMUM POSITION (ADJ.) DURING BUILDING OCCUPIED HOURS AND BE CLOSED DURING UNOCCUPIED HOURS.

DISCHARGE AIR TEMPERATURE: THE CONTROLLER SHALL MONITOR THE DISCHARGE AIR TEMPERATURE.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

HIGH DISCHARGE AIR TEMP: IF THE DISCHARGE AIR TEMPERATURE IS GREATER THAN 120°F (ADJ.).

LOW DISCHARGE AIR TEMP: IF THE DISCHARGE AIR TEMPERATURE IS LESS THAN 40°F (ADJ.).

FAN STATUS: THE CONTROLLER SHALL MONITOR THE FAN STATUS.

ALARMS SHALL BE PROVIDED AS FOLLOWS:

FAN FAILURE: COMMANDED ON, BUT THE STATUS IS OFF.

FAN IN HAND: COMMANDED OFF, BUT THE STATUS IS ON.

FAN RUNTIME EXCEEDED: FAN STATUS RUNTIME EXCEEDS A USER DEFINABLE LIMIT (ADJ.).

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ARCHITECTS ENGINEERS PLANNERS

OHM-ADVISORS.COM

R

424 Hancock Street Hancock, MI 49930

PH 906.482.0535 | F 906.482.6453

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OHM PROJECT No.

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COPYRIGHT 2022 OHM ALL DRAWINGS AND WRITTEN MATERIALS APPEARING HEREIN CONSTITUTE THE ORIGINAL AND UNPUBLISHED WORK OF OHM AND THE SAME MAY NOT BE DUPLICATED, DISTRIBUTED, OR DISCLOSED WITHOUT PRIOR WRITTEN CONSENT OF OHM

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N.T.S1

BOILER CONTROL DIAGRAM

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UNIT HEATER CONTROL DIAGRAM

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UNIT VENTILATOR CONTROL DIAGRAM