G420E/G424E
Tier
LP Engine
Test And Adjustments
79
Secondary Stage Test Connection
Primary Stage Test Hardware
1.
Hand vacuum pump.
2.
Regulator Fuel Inlet test fitting (¼” NPT standard
air coupling).
3.
Test Gauge fitting (1/4” NPT X 1/4” Hose Barb).
4.
Vacuum hose or vinyl tubing.
5.
0-60 in W.C. Magnehelic Gauge (inches of water
column).
Primary Stage Pressure Test
1.
Remove the primary test port plug from the side of
the regulator and install the ¼” NPT hose barb
fitting.
2.
Connect a compressed air line (shop air ~100psi)
to the liquid propane fuel inlet of the N2001
Regulator (Figure R12).
Union Tee
Vacuum
Hand Pump
Vapor Outlet
Test Fitting
Magnahelic
Gauge
Test Port
Figure R12
Fule Inlet
Figure R11
