Baldor GLC30 Installation & Operating Manual page 40

Example: Determining Pipe Size for LPG
A generator has a 16Hp engine 60 feet from the supply.
Determine the supply pipe size for Natural Gas fuel.
16 x 10,000 = 160,000 BTU's / per hour for proper operation.
160, 000
2, 516
From Table 3-6, a 60 foot run requires a minimum 1" pipe at full engine load.
LP Gas Connections (vapor withdrawal only)
The LPG connections should only be made if your generator is setup to run on LPG. If it is setup
to run on Natural Gas, contact your Baldor representative and do not continue with installation.
The incoming pressure must be 11 inches water column (6 oz. pressure).
Table 3-6 LP Gas Flow Rate (Cubic Feet per Hour) per Pipe Length
Pipe
Length Length
"
1
/
(Feet)
2
15 48
30 33
45 27
60 24
75
90
105
120
150
180
210
240
270
300
Note: Almost all operation problems are related to the installation techniques used.
3-8 Receiving & Installation
+ 63.5 cubic feet per hour.
" " "
3 1
/ 1 1– /
4 4
109 218 475
76 153 339
63 126 275
54 110 241
49 98 218
44 89 196
41 83 180
76 171
69 153
63 142
58 130
120
113
108
Do Not guess, be sure pipe size is adequate for required flow rate.
1. Connect the proper size gas pipe at the input to the LP Gas regulator. Connect the
LPG pipe line shown in Figure 3-3 using the correct size pipe for the required flow rate
and length of pipe. Refer to Table 3-6 for pipe size. Be certain that all connections are
sealed and no leaks are present. The installer must ensure that all gas connections
comply with all building codes.
2. Verify Fuel Supply Pressure
Prior to initial operation of generator, verify that fuel system pressure is 11" Water
Column (6 oz. pressure) and fuel pipe sizes comply with Table 3-6.
3. Proceed to Electrical Connections.
Iron Pipe Size
" " "
1 1
1– / 2 2– /
2 2
772 1570 2437
538 1127 1741
443 934 1456
386 817 1266
345 709 1108
310 633 987
285 582 905
266 544 848
241 494 772
222 456 709
202 418 652
190 393 614
180 367 576
171 345 544
" " "
3 4 6
4115 8786 24497
2975 6140 17325
2469 5001 14781
2184 4304 12236
1899 3798 10957
1709 3482 10001
1551 3228 9254
1456 3038 8659
1323 2754 7748
1234 2532 7064
1127 2342 6439
1063 2209 6077
1000 2057 5697
943 1899 5381
"
8
50007
35353
28865
25004
22345
20414
18895
17673
15825
14432
13356
12405
11780
11179
MN2408