Powermate P2201 User Manual
Page 13
13
200-2653
The engine driving the generator is engineered to
provide reliable power on either Liquefied Propane Vapor
(LPG) or Natural Gas. For proper operation on these
fuels, it is important to deliver gas with adequate energy
content, at sufficient pressure and flow rate. This
generator is designed to operate on Liquefied Propane
Vapor (LPG) with a minimum energy content of 2500
BTU per cubic foot or Natural Gas with a minimum
energy content of 1000 BTU per cubic foot. This
generator is designed to operate with a fuel pressure at
the inlet of the unit between 6 and 11 inches of water
column (4-6 ounces).
Required fuel flow rates for specific models are given
in the table below. To insure correct sizing of the piping
supplying fuel to the generator set, provide the flow and
pressure requirements of this section to a fuel supplier or
licensed plumber during the installation planning stage. If
the fuel supplier cannot guarantee delivery of fuel with
these properties, the generator may not perform as
advertised.
Due to differences in the energy content of fuel used,
it is necessary to derate the output of the generator when
connected to Natural Gas. Additionally, regional and/or
seasonal variations in the makeup of the fuel can further
affect output of the engine/generator system. When
using Natural Gas fuel with minimum properties as
defined, engine output can fall approximately 10% below
that of the same set using Propane Vapor.
FUEL REQUIREMENTS:
For the best operation of the unit, the fuels used
should have a minimum content of 1000 BTU’s per cubic
foot for Natural Gas (NG) and 2520 BTU’s per Cubic foot
for Liquid Propane vapor (LPG). Contact local fuel
supplier for local BTU content. Fuel supply pressures
must be between 4oz (6” H
2
0 per square inch) and 6oz
(11” H
2
0 per square inch) at the inlet to the unit.
F
F
F
F
U
U
U
U
E
E
E
E
L
L
L
L
S
S
S
S
P
P
P
P
E
E
E
E
C
C
C
C
II
II
F
F
F
F
II
II
C
C
C
C
A
A
A
A
T
T
T
T
II
II
O
O
O
O
N
N
N
N
S
S
S
S
A
A
A
A
N
N
N
N
D
D
D
D
C
C
C
C
O
O
O
O
N
N
N
N
S
S
S
S
U
U
U
U
M
M
M
M
P
P
P
P
T
T
T
T
II
II
O
O
O
O
N
N
N
N
R
R
R
R
E
E
E
E
Q
Q
Q
Q
U
U
U
U
II
II
R
R
R
R
E
E
E
E
M
M
M
M
E
E
E
E
N
N
N
N
T
T
T
T
S
S
S
S
Per the National Gas Code (NFPA 54 - ANSI
2223.1), a manual shutoff valve in the fuel supply line
to the generator is recommended.
W
WA
AR
RN
NIIN
NG
G
•
Natural gas (NG) is highly explosive.
•
Natural gas (NG) is lighter than air and will
collect in high places.
•
Liquid propane vapor (LPG) is highly explosive.
•
Liquid propane vapor (LPG) is heavier than air
and will collect in lower places.
•
Extreme caution should be taken when working
on a new installation or while performing
general maintenance.
•
Do not smoke when near the unit.
•
Keep flames, sparks, pilot lights, arc-producing
equipment, switches and all other sources of
ignition well away. Keep a type ABC fire
extinguisher handy.
•
Potential for fire or explosion always exist when
using natural gas (NG) or liquid propane vapor
(LPG) as a fuel source. Install this unit in
compliance with all local fuel codes.
•
Do Not operate engine if smell of fuel is present
or other explosive conditions exist.
D
DA
AN
NG
GE
ER
R
•
All fuel system installations MUST BE done by a
licensed plumber or licensed gas technician
and must comply with all applicable codes,
standards and regulations.
FUEL CONSUMPTION TABLE
22kW
27kW
32kW
Fuel Consumption (@25% load)
0.83 Gal/Hr (LP)
0.94 Gal/Hr (LP)
1.1 Gal/Hr (LP)
80 Cu-ft/Hr (NG)
85 Cu-ft/Hr (NG)
95 Cu-ft/Hr (NG)
Fuel Consumption (@50% load)
1.65 Gal/Hr (LP)
1.84 Gal/Hr (LP)
2.06 Gal/Hr (LP)
160 Cu-ft/Hr (NG)
169 Cu-ft/Hr (NG)
180 Cu-ft/Hr (NG)
Fuel Consumption (@75% load)
2.48 Gal/Hr (LP)
2.78 Gal/Hr (LP)
3.03 Gal/Hr (LP)
220 Cu-ft/Hr (NG)
254 Cu-ft/Hr (NG)
270 Cu-ft/Hr (NG)
Fuel Consumption (@100% load)
3.44 Gal/Hr (LP)
3.71 Gal/Hr (LP)
3.99 Gal/Hr (LP)
280 Cu-ft/Hr (NG)
304 Cu-ft/Hr (NG)
315 Cu-ft/Hr (NG)
All values reflect consumption at 100% rated output.