Turn off gas supply to heater. Remove 1/8” Allen
plug from the pressure port on the gas valve.
Locate test ports
Install barbed fitting from manometer in the
pressure port of the gas valve..
Turn off gas supply
Remove the silicone tubing from the vent port on
the gas valve, leaving the barbed fitting installed
on the gas valve.
Remove test port plug(s)
14
Connect the negative side of your manometer to
the pressure port. Connect the positive side to the
vent port as show above. You will need a 3/16”
barbed “T” for your manometer.
Connect manometer
How To: Test/Adjust Gas Pressure
Step 1
Step 3
Step 2
Step 4
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