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Gas Pressure Testing _________________
For proper operation, the gas pressure must be correct,
consistent and maintained at the gas pressure rates shown
on page 21. Provisions are made at the gas valve for taking
gas pressure readings.
There are 2 types of devices used to measure gas pressure.
They are the spring/mechanical type gauge and the
manometer. The use of the spring/mechanical type gauge is
not recommended because they are very easily damaged
and are not always accurate. The preferred type of gauge is
the manometer because it is a simple devise to use and is
highly accurate. A manometer is simply a glass or transparent
plastic tube with a scale graduated in inches or mb. When it
is filled with water and pressure is applied, the water in the
tube rises, showing the exact gas pressure.
Gas Pressure Test Procedure
Turn gas cock in gas supply line to “OFF” position.
50 Hz dryers: Back out miniature screw inside pressure tap
and attach manometer (refer to the illustration on page 23).
60 Hz dryers: Install pressure tap and attach manometer (refer
to illustration on page 23).
Turn gas cock to “ON” position.
Start the dryer in Heat Mode and wait for ignition. Gas manifold
pressure should be as shown on page 21 of this manual.
If the gas pressure needs to be adjusted, refer to “Gas
Pressure Adjustment” on page 24.
Once test is complete, turn gas cock to “OFF” position.
Remove manometer. Tighten screw inside the pressure tap,
or install plug.
Turn gas cock to “ON” position and check for leaks with soap
solution with main burner “ON.”