MECHANICAL GENERAL NOTES

1. MATERIALS, EQUIPMENT AND INSTALLATION SHALLCOMPLY WITH ALL REQUIREMENTS OF THE CONTRACTDOCUMENTS, BUILDING CODES, AND EQUIPMENT /MATERIALS INSTALLATION INSTRUCTIONS.

2. INSTALL ALL EQUIPMENT IN STRICT ACCORDANCE WITHTHE MANUFACTURE'S INSTALLATION INSTRUCTIONS.

3. EQUIPMENT, DUCT AND PIPING LAYOUTS AREGENERALLY DIAGRAMMATIC.

4. DUCT

a. RESIZE DUCT TO ACCOMMODATE ACTUAL FIELDCONDITIONS. MAINTAIN DUCT VELOCITY AS DESIGNED.MAINTAIN A MAXIMUM ASPECT RATIO OF 2:1.

b. DUCT MATERIAL SHALL BE G-60 COATED GALVANIZEDSTEEL OF ASTM STANDARDS A653 AND A924 GRADES.

c. ALL DUCTWORK SHOWN OF THE PLANS ARE FREEFLOW AREA (DOES NOT INCLUDE DUCT ANDINSULATION THICKNESS).

d. SEALING: SMACNA SEAL CLASS C: A MINIMUM OF TWOLAYERS OF MASTIC SHALL BE APPLIED TO TRAVERSEJOINTS. WIDTH SHALL EXTEND ½” ON EACH SIDE OFTHE SEAM. MASTIC SHALL BE THICK ENOUGH SO THATNO METAL IS VISIBLE THROUGH THE MASTIC. NOTAPPLICABLE TO EXPOSED DUCT IN CONDITIONEDSPACES. SEAL ALL TRANSVERSE JOINTS,LONGITUDINAL SEAMS, DUCT WALL PENETRATIONS OFAIR HANDLERS AND FILTER BOXES. DUCT SEALINGMUST BE INSPECTED BY THE LOCAL CODE OFFICIALPRIOR TO INSTALLING EXTERNAL DUCT WRAPINSULATION.

e. DUCT PRESSURE CLASS IS <2” UNLESS NOTEDOTHERWISE.

f. INSULATION:

i. INDOORS: SUPPLY AIR DUCT INSULATION: R6 DUCTLINER.

g. DUCTWORK AND PIPING SHALL BE STORED INCOVERED AREAS SO THAT IT IS NOT EXPOSED TO THEELEMENTS. THE ENDS OF THE DUCT MUST BEWRAPPED TO PREVENT DEBRIS FOR ENTERING THEDUCT.

h. INSTALL DUCT PER CURRENT SMACNA STANDARDSAND NC MECH CODE. DUCT SHALL BE GALVANIZED.

i. ALL ELBOWS SHALL BE SMACNA SMOOTH RADIUSELBOWS OR SQUARE THROAT RADIUS BACK.

j. ALL BRANCH DUCTS SHALL BE 45 DEGREE ENTRYTYPE.

k. PROVIDE BALANCING DAMPERS AT ALL BRANCHRUNOUTS TO GRILLES. BALANCING DAMPERS MUST BEACCESSIBLE.

l. FLEX DUCT SHALL BE UL 181 LISTED.

5. ALL ROOF OPENINGS SHALL BE PROVIDED BY THE GCAND COORDINATED WITH THE ROOFINNG COMPANYTHAT HOLDS THE ROOD WARRANTY.

6. ALTERNATE EQUIPMENT MANUFACTURES.

a. DIFFUSERS AND GRILLES: PRICE, NAILOR AND METALAIRE.

b. FANS: COOK OR GREENHECK

7. PIPING

a. FIRE CAULK ALL PIPING PENETRATIONS TO MATCHFIRE RATINGS (IF NEEDED).

WITH DUCT TAPE

1-1/2" MINIMUM

WIRE

1-1/2" MINIMUM

1-1/2" BAND CLAMPWITH WIRE ISOPTIONAL.

DOWN TO ORIGINAL POSITION AND SECUREBAND IS SECURED, FOLD INSULATION BACKINSTALL BAND TO CONNECTOR. AFTERDRAW BAND. FOLD BACK INSULATION TO

(FLEX-DUCT LENGTH)

10'-0" MAXIMUM

MAX. SAG 1/2" PERFOOT OF SUPPORTSPACING

SCALE:

FLEXIBLE DUCT INSTLLATION

AND SUPPORT DETAILS

GALVANIZED DUCT

DUCT PERIMETER SIZEMAXIMUM HALF OF STRAP

P/2=30" 1-1/2"x 22 ga.

P/2=72"

P/2=96"

P/2=120"

P/2=192"

8'-0" O.C.

SPACING

8'-0" O.C.

MAXIMUM

8'-0" O.C.

8'-0" O.C.

8'-0" O.C.

AIR DUCTHANGER STRAP

SCREWS 1" MIN.

1-1/2"x 20 ga.

1-1/2"x 18 ga.

1-1/2"x 16 ga.

SCALE:

DUCT STRAP SUPPORT

(MAX. 2" W.G. MAX. 2000 FPM)

1-1/2"x 16 ga.

SCREWS MAY BEOMITTED IF HANGERSTRAP LOOPS

SPACINGMAXIMUMSTRAP SIZEAIR DUCT SIZE

GALVANIZED STEEL DUCT

1-1/2" x 20 ga. 8'-0"19" - 36" DIA.

8'-0"1-1-/2" x 22 ga.UP TO 24" DIA.

AIR DUCT

HANGER STRAP

LOAD RATED FASTENERS

SCALE:

ROUND DUCT SUPPORT

(UP TO 36" DIAMETER)

FLEX DUCT

FLEX DUCT CONNECTOR

OR

1-WAY DIFFUSER

4-WAY DIFFUSER

90° ELBOW WITH TURNING VANES

(RADIUS = 1.5 x DUCT DEPTH)

SMOOTH RADIUS ELBOW

TRANSITION

VOLUME DAMPER

RETURN AIR GRILLE

FIRE DAMPER (VERTICAL)

2-WAY DIFFUSER

2-WAY DIFFUSER

3-WAY DIFFUSER

DUCTWORK

MECHANICAL LEGEND & SYMBOLS

DIFFUSERS

THERMOSTAT

T

FIRE DAMPER (HORIZONTAL)

RADIATION DAMPER

HVAC REFERENCE SYMBOLS

X

CONNECT NEW TO EXISTING

INDICATES REVISION & NUMBER

XXX

X

AIR DISTRIBUTION TAG

(SEE SCHEDULE)

CFM

EXHAUST AIR GRILLE

2018 APPENDIX BBUILDING CODE SUMMARY FOR ALL COMMERCIAL PROJECTS

MECHANICAL DESIGN

MECHANICAL SYSTEMS, SERVICE SYSTEMS AND EQUIPMENT

MECHANICAL SUMMARY

THERMAL ZONE 3AWINTER DRY BULB: 14°FSUMMER DRY BULB: 93°F

INTERIOR DESIGN CONDITIONSWINTER DRY BULB: 70°FSUMMER DRY BULB: 74°FRELATIVE HUMIDITY: 30-50%

BUILDING HEATING LOAD: NO CHANGE TO BUILDING ENVELOPEBUILDING COOLING LOAD: NO CHANGE TO BUILDING ENVELOPE

MECHANICAL SPACING CONDITIONING SYSTEMUNITARY

DESCRIPTION OF UNIT: SEE EQUIPMENT NOTES.HEATING EFFICIENCY: SEE EQUIPMENT NOTES.COOLING EFFICIENCY: SEE EQUIPMENT NOTES.HEAT OUTPUT OF UNIT: SEE EQUIPMENT NOTES.COOLING OUTPUT OF UNIT: SEE EQUIPMENT NOTES.

BOILERSIZE CATEGORY. IF OVERSIZED, STATE REASON.: N/A

CHILLERSIZE CCATEGORY. IF OVERSIZED, STATE REASON.: N/A

LIST EQUIPMENT EFFICIENCIES: N/A

MECHANICAL DRAWINGS INDEX

M1.0 MECHANICAL NOTES, SYMBOLS, SCHEDULES AND DETAILS.

M1.1 MECHANICAL DEMOLITION PLAN.

M2.1 OVERALL MECHANICAL FLOOR PLAN.

M2.2 ENLARGE MECHANICAL FLOOR PLAN.

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MECHANICAL NOTES,SYMBOLS, SCHEDULES

AND DETAILS.

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210 N. MAIN ST. SUITE 112

KERNERSVILLE, NC

336-999-4097

LC# P-0504

AE20210813

NOTES KEYED TO DEMOLITION PLAN

DEMO BRANCH DUCT BACK TO MAIN.

NO CHANGE TO RTU8 & RTU9 DUCT SERVING THESE AREAS.

DEMO ALL DUCTWORKS / GRILLES ASSOCIATED WITH RTU4,5,6,7 & 10. DEMO DUCTBACK TO DROPS FROM UNIT. SEE NEW WORK PLAN FOR NEW DUCT.

DEMO CEILING EXHAUST FANS AND CAP DUCT AT EXTERIOR WALL PENETRATION.

DEMO GRILLES & BRANCH DUCT SERVING THIS AREA FROM RTU1.

DEMO DUCT BACK 15' FROM, WALL AND CAP END.

DEMO THERMOSTAT AND REMOTE SPACE SENSOR SERVING RTU1,2 & 3.

1

2

3

4

5

6

Loading Dock

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MECHANICAL DEMOLITION PLANSCALE: 1/8" = 1'-0"

RTU #

EXISTING RTU

SCHEDULES

RTU-1

RTU-2

RTU-3

RTU-4

RTU-5

RTU-6

RTU-7

RTU-8

RTU-9

RTU-10

MODEL #

YSC060

YSC120

YSC120

YHC037E3R

YHC037E3R

YHC037E3R

YHC037E3R

YHC037E3R

YHC037E3R

YSC060

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RTU-1

RTU-2RTU-3

RTU-4 RTU-5 RTU-6 RTU-7

RTU-8

RTU-9

RTU-10

5

4

4

3 3 3 3

3

4

4

2

2

1

6

M1.11

7

7

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210 N. MAIN ST. SUITE 112

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336-999-4097

LC# P-0504

AE20210813

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REF

1M2.2

RTU-1

RTU-2RTU-3

RTU-4 RTU-5 RTU-6 RTU-7

RTU-8

RTU-9

RTU-10

OVERALL MECHANICAL FLOOR PLANSCALE: 1/8" = 1'-0"M2.1

1

NOTES KEYED TO MECHANICAL PLAN

ADD SIDEWALL GRILLE WITH TAKE OFF TO MATCH EXISTING.1

VENTILATION CALCULATIONS

RETAIL 102OA = [(7.5CFM / 15P) + (0.12CFM / 11,180FT2)] / 0.8 = 1454CFMAREA SERVED BY RTU2,3 AND 10. BALANCE OA ON EACH RTU TO 485CFM / EA

RECEIVING 121 (RTU1)OA = (0.06CFM / 2435FT2) / 0.8 = 183CFMBALANCE OUTSIDE AIR ON RTU1 TO 185CFM

TRAINING 104 (RTU9)OA = [(10CFM / 14P) + (0.12CFM / 575FT2)] / 0.8 = 260CFMBALANCE OUTSIDE AIR ON RTU9 TO 260CFM

TRAINING 107 (RTU8)OA = [(10CFM / 14P) + (0.12CFM / 575FT2)] / 0.8 = 260CFMBALANCE OUTSIDE AIR ON RTU8 TO 260CFM

BREAK 115 (RTU7)OA = [(5CFM / 6P) + (0.06CFM / 357FT2)] / 0.8 = 64CFMCONF. 110 (RTU7)OA = [(5CFM / 12P) + (0.06CFM / 244FT2)] / 0.8 = 36CFMOFFICE 128 (RTU7)OA = [(5CFM / 1P) + (0.06CFM / 145FT2)] / 0.8 = 17CFMBALANCE OUTSIDE AIR ON RTU7 TO 120CFM

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M2.1

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210 N. MAIN ST. SUITE 112

KERNERSVILLE, NC

336-999-4097

LC# P-0504

AE20210813

NOTES KEYED TO MECHANICAL FLOOR PLAN

PROVIDE MODULATING ZONE DAMPER LINKED TO THERMOSTAT IN CONFERENCE 110. SET MINIMUM AIRFLOW TO 120CFM.

TRANSFER GRILLE TO ALLOW PLENUM RETURN BACK TO RTU. INSTALL BOTTOM OF GRILLE 6" (+/-) ABOVE CEILING OFADJACENT SPACE. INSTALL GRILLE ON FINISHED SIDE OF WALL.

1

2

GENERAL NOTES

1. COVER END OF RETURN DROPS ON RTU4 - RTU10 WITH EXPANDED METAL MESH.

2. BUILDING HAS A RETURN AIR PLENUM.

3. PROVIDE NEW PROGRAMMABLE THERMOSTATS WITH LOCKABLE SCREEN FOR RTU1 - RTU10.

REF

RTU-2RTU-3

RTU-4 RTU-5 RTU-6 RTU-7

RTU-8

RTU-9

RTU-10

ENLARGE MECHANICAL FLOOR PLANSCALE: 3/16" = 1'-0"M2.2

1

EF-1

1

2

2

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ENLARGE MECHANICALFLOOR PLAN

M2.2

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3740 S

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210 N. MAIN ST. SUITE 112

KERNERSVILLE, NC

336-999-4097

LC# P-0504

AE20210813