CUMMINS ED-3 Installationshandbuch PDF herunterladen (Seite 19)

Natural Gas Generator Set Installation Manual-GF Series

Doc. 17855, Rel. 03/2014

3-5

1. Rain Cap

2. Drip Cap

3. Holes in End of Inner Sleeve

4. Roof

5. Thimble in Vertical Orientation

6. Thimble in Horizontal Orientation

7. Wall of Partition

Figure 3-2 Mounting Exhaust Thimble

WARNING

Hot exhaust pipes can start a fire and cause

severe injury or death if improperly routed

through walls. Use an approved thimble where

exhaust pipes pass through walls or partitions.

Rain caps are available for the discharge end of verti-

cal exhaust pipes. The rain cap clamps onto the end

of the pipe and opens due to exhaust discharge force

from the generator set. When the generator set is

stopped, the rain cap automatically closes, protecting

the exhaust system from rain, snow, etc.

Use a section of flexible exhaust pipe between the

engine and remainder of exhaust system. Support

exhaust system to prevent weight from being applied

to engine exhaust outlet.

CAUTION

Weight applied to the engine exhaust compo-

nents can result in damage. Support the muffler

and exhaust piping so no weight or stress is

applied to engine exhaust.

IMPORTANT: Liability for injury, death, damage, and

warranty expense due to use of unapproved mufflers

or modifications to the exhaust system becomes the

responsibility of the person installing the unapproved

muffler or performing the modification. Contact a

Cummins NPower distributor for approved exhaust

system parts.

Avoid sharp bends by using sweeping, long radius

elbows and provide adequate support for muffler and

tailpipe. Pitch a horizontal run of exhaust pipe

DOWNWARD (away from engine) to allow any mois-

ture condensation to drain away from the engine. If

an exhaust pipe must be turned upward, install a con-

densation trap at the point where the rise begins.

Refer to Figure 3-3.

Shield or insulate exhaust lines if there is danger of

personal contact. Allow at least 305 mm (12 in) of

clearance if the pipes pass close to a combustible

wall or partition. Before installing insulation on

exhaust system components, check the exhaust

system for leaks while operating the genset under full

load and correct all leaks.

WARNING

Exhaust pipes are very hot and they can cause

severe personal injury or death from direct

contact or from fire hazard. Shield or insulate

exhaust pipes if there is danger of personal

contact or when routed through walls or near

other combustible materials.

3.5 Installation of Sensors

On select model specific engines the natural gas, O2

and temp sensors to be mounted in exhaust ports

located pre and post catalyst. See Figure 3-4 and

Figure 3-5. Customer is responsible for installation of

sensors. Reference AEB 10.124

NOTE: 4.00’ clearance for insulation and other items

around sensors is required.

NG-00038

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