Installation Guide

3. Step-By-Step Outline of Installation 1-2014
TABLE 18. PROPANE VAPOR PIPE CAPACITY - CUBIC FEET OF GAS PER HOUR
Nominal Iron Length of Pipe in Feet
Pipe Size
10 20 30 40 50 60 70 80 90 100 125 150
(Inches)
3/4 227 157 126
1 428 293 236 201 179 164 151 138 129 123 110
1 1/4 882 598 485 416 365 333 308 289 207 252 230 204
1 1/2 1323 920 743 624 567 570 472 434 409 390 346 315
2 2488 1732 1386 1197 1058 958 882 819 768 724 642 598
Maximum pipe capacity in cubic feet per hour of Propane vapor with a pressure drop of 0.5 inches (1.27 mm) WC
over the length
FIGURE 14. TYPICAL PROPANE VAPOR WITHDRAWL INSTALLATION
3.8.4.4 Converting From Natural Gas to Propane (Vapor Withdrawal)
The generator set leaves the factory set up for Natural gas.
For use with Propane, the generator must be converted by configuring the control for
Propane.
For US GSBB Spec B and Canadian GSBC Spec B, additional steps must be taken when
converting to Propane.
1. The manual fuel selector must be adjusted to the LP setting.
2. Once the manual fuel selection is set, install the welch plug tied to the front of the fuel
regulator by hammering the plug into the fuel selector until the plug distorts and cannot be
removed. Once the plug is installed, the fuel type cannot be changed unless the welch plug
is physically removed. If the welch plug is removed, it will most likely be damaged and will
need to be replaced with a new welch plug.
34 A029V088 (Issue 16)