10
PRESSURE TESTING
Figure 10a
NOTE
The appliance and its individual shutoff valve must be disconnected from gas supply piping system during any pressure testing
of that system at pressures in excess of ½ psi (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off valve during any
pressure testing of the gas line at test pressures equal to or less than ½ psi (3.5 kPa).
IMPORTANT
Pressure check taps for manifold (outgoing) and inlet (incoming) pressure have been incorporated into the valve. The pressure
tap marked OUT measures outgoing pressure and pressure tap marked IN measures incoming pressure. Follow instructions
below for proper testing procedures.
MANIFOLD PRESSURE TEST:
1. Light pilot.
2. Loosen manifold (OUT) pressure tap screw (counter-clockwise).
3.
Attach manometer to pressure tap using a 5/16” I.D. hose.
4. Turn gas control knob to ON.
5. Press rocker switch to ON and note manometer reading.
6. Press rocker switch to OFF.
7. Disconnect manometer hose and tighten screw (clockwise). Screw should be snug, do not over tighten.
8. Attach manometer to manifold pressure tap to verify it is completely sealed. Manometer should read no pressure when rocker switch is
pressed to ON.
INLET PRESSURE TEST:
1. Loosen inlet (IN) pressure tap screw (counter-clockwise).
2.
Attach manometer using a 5/16” I.D. hose.
3. Light pilot.
4. Turn gas control knob to ON (burner should not light). Note manometer reading.
5. Press rocker switch to ON. Check pressure to ensure it stays near maximum inlet pressure.
6. Press rocker switch to OFF.
7. Turn gas control knob to OFF.
8. Disconnect hose and tighten screw (clockwise). Screw should be snug, do not over tighten.
9. Relight pilot and turn gas control knob to ON. Reattach manometer to inlet pressure tap to verify it is completely sealed.
Manometer should read no pressure.
MANIFOLD
INLET
CAUTION
A LOW PRESSURE READING CAN CAUSE DELAYED IGNITION.
NOTE
If inlet pressure reading is too high or too low, contact the gas company. Only a qualified gas service technician should adjust
the incoming gas pressure.
