chapter 6_details hvac

8/10/2019 Chapter 6_Details HVAC

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DETAILSMEP/ HVAC

DETAILS

At times, the architect and engineer need a drawing that gives a three-dimensional appearance. These drawingsare labeled Detail on the plans under the title of the detail. Details are not usually drawn to scale. For clarity,the drafter notes Not to Scale or gives the scale used. Some examples of such drawings are shown in DetailsFigures 22 through 26 . Each of these details gives a realistic view of the object along with specific necessaryinformation.

Details, are included on plans to relay information from the architect to persons who will be studying theconstruction drawings.

Details, may be on a separate page or on unused spaces on the construction drawings. A detail shows how materials and components are joined, and it is not usually drawn to scale . Details are

often drawn using the isometric or oblique drafting method.

MECHANICAL DETAILS

Some details that are commonly used in themechanical engineers office are as follows:

1. Mechanical unit details2. Fan details3. Equipment mounting bases4. Unit hangers details5. Roof-mounted equipment6. Supply and return air terminals7. Detail of special valves8. Duct connections9. Piping details

10. Pump details11. Damper details

12. Insulation details13. Coil mounting details14. Louver details15. Equipment connection details

Mechanical details should include such infor-mation as the type of materials used, how differentmembers are joined together, necessary dimensionsfor different members, connection points, and hangersor mounting devices.

SECTION 2 / SpecificsDETAILSMEP/ HVAC 120

DETAILS Figure 22. Oblique detail of a hot water unitheater.

RETU

RN

F L O W

GATE VALVE

UNION

FLOW SUP

PLY

GLOBE VALVE

UNIONUNIT HEATER

CONTEN


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G

SUPPLY DUCT

DUCT TRANSITIONS

ELBOW

FLEXIBLE DUCTCONNECTION

COOLING COIL

GAS VENT UPTHROUGH ROOF

GAS LINE

MANUAL SHUT-OFF VALVE

DIRT TRAP

UNION

100% SHUT-OFF GASCONTROL VALVE

4" HIGH CONCRETE HOUSEKEEPINGPAD ON CONCRETE FLOOR

RETURN AIR DUCT

FILTER SECTION

CONDENSATE DRAIN LINE

REFRIGERANTLIQUID LINE

REFRIGERANT

SUCTION LINE

NOTE: NOT TO SCALE

DETAILS Figure 23. Detail of connections to a gas furnace in an A/C unit.

CONTEN


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AIR VENT

HOT WATER

HEATING COIL

UNION

BALANCING VALVEGLOBAL VALVE

3-WAY CONTROL VALVE

GATE VALVE

FLOW

FLOW

DETAILS Figure 24. Detail of hot water heating coil with three-way control valve.

CONTEN


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REFRIGERANTPIPING

REFRIGERANTPIPING

CONDENSINGUNIT

CONDENSINGUNIT

CONCRETEPAD

CONCRETEPAD

FAN WITH FAN GUARD

EXTENSIONLINES (TYPICAL)

FINISHEDGRADE

PLAN VIEW

ELEVATIONVIEWAIRINTAKE

AIR DISCHARGE

E X T E R I

O O R

C I R C U

I T B R E A

K E R C O

N D E N S I N

G

U N I T

P O W E

R I N

F L E X I B

L E

C O N D

U I T

R E F R I G

E R A N T

L I Q U I D

L I N E

R E F R I G

E R A N T

S U C T I O

N L I N E

O U T S I

D E

C O I L

6 " C O N

C R E T E

P A D

O N G R

A D E

A I R I N T A K E

A I R D I S C H A R G E

DETAILS Figure 25. Plan view and elevation view of condensing unit.

DETAILS Figure 26. Detail of outside condensing unit.

CONTEN


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DETAILS Figure 27. Exhaust fan detail.

VIEW PHOTO

CONTEN


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DETAILS Figure 28. Fresh air intake.

VIEW PHOTO

CONTEN

chapter 6_details hvac

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