4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 2: Vapor Piping Installation
Page 47
2.4
Air Outlet Piping Installation
•
Install a new vent riser next to an existing vent riser (if possible).
•
The 1” piping must slope away from the
GREEN MACHINE
a minimum of ¼” per foot.
See Figure 2-1
.
•
Install the new dedicated vent riser so that the discharge opening is at least as high as the
existing riser and a minimum of 1” diameter.
•
Install a tee with a cap at the bottom of the new air outlet vent riser to provide for manual
drainage, if required.
•
Make sure the ¼” drain line is installed between the vapor inlet and the vapor return lines.
•
Install piping from the 1” NPT Air Outlet fitting on t
he GREEN MACHINE to the new vent riser.
•
From the vent riser, install the 1” locking ball valve, then the 1” union, then the 1” tee as
shown in
Figure 2-1
.
•
A rain cap or equivalent must be installed on the new air outlet vent riser.
•
If a PV vent valve is used, the internal components must be removed to allow open
venting to the atmosphere.
2.5
Vapor Piping Post-Installation
•
After all the piping has been installed, make sure the 3 lockable ball valves are locked and in the
OPEN position.
•
Make sure all the pipe connections are tight.
•
Make sure the slope is a minimum 1/4
” per foot away from the
GREEN MACHINE to the vent
risers.
•
Make sure there are no traps between the GREEN MACHINE and the vent risers.
•
If flex piping is used, make sure the flexible piping is adequately supported.
•
Make sure the ball valve below the Pressure Sensor is OPEN, or the handle is vertical.
See Figure 2-3
.
•
The ¼”
diameter drain line with the supplied adapter must be installed per
Figure 2-1
.
