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6. Take a pressure reading with the heater running, the value should agree with those shown
in the table below. If the pressure is within the range shown, then no further adjustment is
needed.
7. If the gas pressure does not meet the above requirements, the regulator must be adjusted.
8. Gas pressure regulator adjustment procedure:
a. Remove the screw cap over the regulator adjustment screw.
b. Turn the regulator adjustment screw clockwise to increase pressure and counterclock-
wise to decrease pressure.
c. Replace the screw cap over the regulator adjustment screw.
9. Remove the manometer and replace the plug. If proper pressure cannot be achieved by ad-
justing the gas valve regulator, the installer must contact the gas supplier and request that the
inlet pressure to the heater be set to within the gas pressure range shown in step 6.
.
5
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Correct gas pressures
[inches water column (in wc)]
Fuel
Natural
Manifold
1.8 – 2.2
Inlet, Minimum
4.5
Inlet, Maximum
10.5
Propane
6.8 – 7.0
10.0
13.0
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