22
Installation Manual
4
Remove the water heater front cover by loosening the 2
Phillips screws securing it to the case.
1
1
2
5
Loosen the screw indicated in the figure below and connect a
manometer to the inlet pressure port. Reset the manometer to
zero before use.
6
Re-open the manual gas shut-off valve and check for leaks.
7
Open multiple fixtures that have high flow rates, such as
bathtub and shower faucets, to ramp up the water heater to
its maximum firing rate.
8
When the water heater reaches its maximum firing rate, check
the inlet gas pressure reading on the manometer. The gas
pressure must fall within the ranges specified in "Inlet Gas
Pressure" on page 21.
9
Tighten the inlet gas pressure screw.
10
Replace the front cover and tighten the 2 Phillips screws to
secure it to the case.
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