Exhaust Requirements; Air Requirements; Fuel System; Fuel Supply - Kohler POWER SYSTEM 12RESM1 Installation Manual

2.4.3

Exhaust Requirements

WARNING
Carbon monoxide.
Can cause
fainting, or death.
The exhaust
leakproof and routinely inspected.
Generator set operation. Carbon monoxide can cause
severe nausea, fainting, or death. Carbon monoxide is an
odorless, colorless, tasteless, nonirritating gas that can cause
death if inhaled for even a short time. Avoid breathing exhaust
fumes when working on or near the generator set. Never
operate the generator set inside a building. Never operate the
generator set where exhaust gas could seep inside or be
drawn into a potentially occupied building through windows, air
intake vents, or other openings.
The exhaust system is complete for generator sets
installed outdoors. Do not install this generator set
indoors.
Figure 2-4 gives the exhaust flow and temperature at
rated load. The engine exhaust mixes with the
generator set cooling air at the exhaust end of the
enclosure. Mount the generator set so that the hot
exhaust does not blow on plants or other combustible
materials. Maintain the clearances shown in Figure 2-2.
Exhaust System
3
Exhaust flow at rated kW, m
Engine exhaust temperature at rated
kW, dry exhaust, _C (_F)
Exhaust gas exiting the enclosure at
rated kW, _C (_F)
Figure 2-4 Exhaust Flow and Temperature
2.4.4

Air Requirements

The generator set requires correct air flow for cooling
and combustion. The inlet and outlet openings in the
sound enclosure provide the cooling and combustion
air. Figure 2-5 shows the locations of the cooling air
intake and exhaust vents. Inspect the air inlet and outlet
openings inside and outside the housing to ensure that
the air flow is not blocked.
TP-6397 4/07
severe nausea,
system must be
/min. (cfm) 3.8 (135)
816 (1500)
316 (600)
1
1. Exhaust outlet
2. Alternator air intake (both sides)
3. Engine air intake
Figure 2-5 Cooling Air Intake and Exhaust
Cooling Air Requirements
3
Cooling air, m /min. (cfm)
Total inlet air requirement, m
3
Combustion air, m /min. (cfm)
Figure 2-6 Cooling Air Requirements

2.5 Fuel System

The generator set operates using natural gas or LP
vapor fuel. The generator set is CARB- and
EPA-certified for both natural gas and LP vapor fuels.
The fuel system installation must comply with all
applicable state and local codes.
2.5.1

Fuel Supply

Because of variable climates and geographical
considerations, contact the local fuel supplier for fuel
system planning and installation. Figure 2-7 lists the
recommended fuel ratings for natural gas and LP vapor
fuels.
Fuel System
Fuel types
Fuel supply inlet
Fuel supply pressure, kPa (in. H
Natural gas
LP
Gas flow rate, Btu/hr.
Nominal Fuel Rating, Btu/ft
Natural gas
LP vapor
Figure 2-7 Fuel Supply
2 3
26.9 (950)
3
/min. (cfm) 28.0 (990)
1.1 (39.2)
Natural Gas or LP Vapor
1/2 NPT
O):
2
1.2--2.7 (5-11)
1.7--2.7 (7-11)
193,000
3
1000
2500
Section 2 Installation
3
tp6195
17