Negative Barbed Fitting
(remove for manifold adjustment)
(+)
(−)
2" Long Square Tubing
(remove for manifold adjustment)
Manifold Pressure Outlet
Gas Valve Regulator
Vent Hose
(to burner box)
Tee
Barbed Fitting
10" Long
Square
Tubing
Measuring Device
FIGURE 53
Page 41