Baldor ISO9001 manual Exhaust Piping Thru Walls and Roofs, Exhaust Thimble Minimum O.D

Page 29

FIGURE 6-2: DOUBLE THIMBLE - WALL OUTLET DETAILS

EXHAUST PIPING THRU WALLS AND ROOFS

Always check local and state laws pertaining to hot gas pipes before making plans for running exhaust piping thru walls or roofs. If the exhaust pipe must pass thru combustible walls or roofs, use an exhaust thimble to prevent exhaust pipe heat from being transmitted to the combustible material. Construction details of a typical thru wall double sleeve thimble is shown above — thimbles are not available. They are usually fabricated at local sheet metal shops to the specifications furnished by the installation engineer. The minimum outside diameter of a double thimble (inner and outer sleeves) should be at least six inches greater than the diameter of the exhaust pipe — with single sleeve thimbles, the O.D. should be at least 12 inches greater than the diameter of exhaust pipe. The minimum thimble diameters for some common exhaust pipe sizes are listed in the table below. The minimum thimble diameter for some common exhaust pipe sizes are listed in the table below. The thimbles should be constructed so that they extend at least 10" both ways from the surface of the wall or roof. Holes are provided at both ends to allow cooling air to circulate thru the thimble. If screening is used on the outer end to keep birds, rodents, etc., from entering the thimble, make sure the mesh is large enough so it doesn’t impair air circulation through the thimble. If the exhaust pipe must exit thru a roof,

EXHAUST THIMBLE - MINIMUM O.D.

EXHAUST

MINIMUM OUTSIDE DIAMETER

EXHAUST

MINIMUM OUTSIDE DIAMETER

 

 

 

 

 

 

 

 

PIPE

SINGLE SLEEVE

DOUBLE SLEEVE

PIPE

SINGLE SLEEVE

DOUBLE SLEEVE

DIAMETER

THIMBLE*

THIMBLE**

DIAMETER

THIMBLE*

THIMBLE**

 

 

 

 

 

 

0.5"

12.5"

6.5"

2.5"

14.5"

8.5"

0.75"

12.75"

6.75"

1.0"

13.0"

7.0"

3.0"

15.0"

9.0"

1.25"

13.25"

7.25"

3.5"

15.5"

9.5"

1.5"

13.5"

7.50"

4.0"

16.0"

10.0"

2.0"

14.0"

8.0"

5.0"

17.0"

11.0"

 

*DIAMETER OF PIPE PLUS 12".

**DIAMETER OF PIPE PLUS 6"

 

 

 

 

 

 

 

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Contents Standby Permanent Mount Series Generator Forward Page Page Ż ż for Gasoline or Diesel Powered Generator Sets ż ż ż ż Ż ż for Gasoline or Diesel Powered Generator Sets ż ż ż ż Standby PERMANENT- Mount Series Generator Baldor Baldor Generator Features OptionsEngine Specifications Farm Duty 1-Phase Model DLC25Model D50 PowerPAC Farm Duty 1-Phase Model DLC50Model D60 Engine Specifications Farm Duty 1-Phase Model DLC60Model D75 Engine Data Farm Duty 1-Phase Model DLC75Model D100 Model DLC100 Farm Duty 1-PhaseModel D130 Farm Duty 1-Phase Model DLC130 Electrical Connection Information Hard Wire Load Terminal BlockConnection Information Standby Permanent Mount Series Generator Generator Mounting RequirementsEngine Cooling Requirements Engine Cooling AIR Backpressure must not exceed 20 of water column HOT Exhaust GasesPage Generator END Cooling AIR Building VentilationBuilding Ventilation Exhaust Piping Exhaust RequirementsExhaust Thimble Minimum O.D Exhaust Piping Thru Walls and RoofsDouble Thimble Roof Outlet Details Control Panel Operation Function Page Page Operation Starting Operation Cranking Control LOW Voltage No VoltageOverheating Fluctuating VoltageHigh Voltage Mechanical Noise Generator Frame Produces Shock When TouchedTroubleshooting Engine Limited Warranty Warranty Period Limitations RPM Distributor Information END User / Owner InformationKVA CurrentPre Start-Up Check List Start-Up Procedure Oregon Street Oshkosh WI Phone 920-239-4200 Fax California Proposition 65 Warning Oregon Street Oshkosh WI Phone 920 236-4200 Fax 920
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