G4-209 (14/20RESA) 12/11
Fuel Requirements
Fuel System 14RESA 20RESA
Fuel types Natural Gas or LP Vapor
Fuel supply inlet 1/2 NPT
Fuel supply pressure, kPa (in. H
2
O):
Natural gas 1.2--2.7 (5-11)
LP 1.7--2.7 (7-11)
Fuel Composition Limits *
Nat. Gas LP Gas
Methane, % by volume (minimum) 90 min. —
Ethane, % by volume (maximum) 4.0 max. —
Propane, % by volume 1.0 max. 85 min.
Propene, % by volume (maximum) 0.1 max. 5.0 max.
C
4
and higher, % by volume 0.3 max. 2.5 max.
Sulfur, ppm mass (maximum) 25 max.
Lower heating value,
MJ/m
3
(Btu/ft
3
), min.
33.2 (890) 84.2 (2260)
* Contact your local distributor for suitability and rating derates based
on fuel compositions outside these limits.
Operation Requirements
Fuel Consumption
Model Fuel Type
%
Load
Fuel Consumption, m
3
/hr. (cfh)
60 Hz 50 Hz
14RESA
Natural Gas
100
5.4 (193) 4.9 (175)
75
4.7 (163) 4.2 (148)
50
3.5 (124) 3.1 (108)
25
2.6 (93) 2.4 (84)
LP Vapor
100
2.3 (81) 2.1 (74)
75
2.1 (75) 1.9 (68)
50
1.8 (60) 1.5 (53)
25
1.2 (45) 1.1 (40)
20RESA
Natural Gas
100
8.0 (281) 6.4 225
75
6.9 (243) 5.4 189
50
4.6 (161) 3.9 139
25
3.6 (127) 2.9 103
LP Vapor
100
3.9 (136) 2.9 102
75
3.1 (109) 2.4 85
50
2.3 (82) 1.8 63
25
1.7 (59) 1.3 47
Nominal fuel rating: Natural gas: 37 MJ/m
3
(1000 Btu/ft.
3
)
LP gas: 93 MJ/m
3
(2500 Btu/ft.
3
)
LP gas conversion factors: 8.58 ft.
3
=1lb.
0.535 m
3
=1kg
36.39 ft.
3
= 1 gal.
Sound Data
Model 14RESA sound level is 63 dBA during weekly engine
exercise and 67 dBA during full-speed generator diagnostics
and normal operation.
Model 20RESA sound level is 64 dBA during weekly engine
exercise and 69 dBA during full-speed generator diagnostics
and normal operation.
All sound levels are measured at 7 meters with no load.
RDC2 Controller
The RDC2 controller provides integrated control for the
generator set, Kohlerr Model RXT transfer switch,
programmable interface module (PIM), and load control module
(LCM).
The RDC2 controller’s 2-line LCD screen displays status
messages and system settings that are clear and easy to read,
even in direct sunlight or low light.
RDC2 Controller Features
D Membrane keypad
d OFF, AUTO, and RUN pushbuttons
d Select and arrow buttons for access to system
configuration and adjustment menus
D LED indicators for OFF, AUTO, and RUN modes
D LED indicators for utility power and generator set source
availability and ATS position (Model RXT transfer switch
required)
D LCD display
d Two lines x 16 characters per line
d Backlit display with adjustable contrast for excellent
visibility in all lighting conditions
D Scrolling system status display
d Generator set status
d Voltage and frequency
d Engine temperature
d Oil pressure
d Battery voltage
d Engine runtime hours
D Date and time displays
D Smart engine cooldown senses engine temperature
D Digital isochronous governor to maintain steady-state speed
at all loads
D Digital voltage regulation: ±0.5% RMS no-load to full-load
D Automatic start with programmed cranking cycle
D Programmable exerciser can be set to start automatically on
any future day and time, and run every week or every two
weeks
D Exercise modes
d Unloaded weekly exercise with complete system
diagnostics
d Unloaded full-speed exercise
d Loaded full-speed exercise (Model RXT ATS required)
D Front-access mini USB connector for SiteTecht connection
D Front access mini-breaker protects the alternator
D Integral Ethernet connector for Kohlerr OnCuet
D Built-in 2.5 amp battery charger
D Remote two-wire start/stop capability for optional connection
of Model RDT or RSB transfer switches
See additional controller features on the next page.
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