Fulton Heating Solutions, Inc. -- PHW Manual -- 2010-0713
Page 52
c) Open gas supply to manual gas shutoff valve and turn on boiler. After combustion starts,
manometer should read 7" WC (178mm) minimum for natural gas and 11” WC (25mm)
minimum for propane.
d) If reading exceeds 14" WC. (178mm) install regulator upstream of gas valve to reduce
pressure.
35. For High Gas Pressure Installations
a) In high gas pressure areas, it is good practice to step the pressure down as described
below.
1. Locate the stepdown regulator as far away from the Pulse boiler as
possible.
2. When stepping down from more than 5 psig to 14" WC, the stepdown
should be done in two steps:
i. Reduce the pressure to 5 psig.
ii. Reduce the pressure from 5 psig to 14" WC
3. The preferred regulator for this application is the Fisher S202 with a
stabilizing booster cartridge (SBC).
4. Consult your Authorized Fulton Representative for selection.
b) This recommendation is made to avoid regulator chatter. It is also recommended to avoid
high lockup pressures which can cause light off reliability problems. Regulators, other
than specified, may be acceptable, but it has been our experience that the above listed
regulators operate the most satisfactorily.
36. Before Leaving the Installation
a) Check all controls to insure they are operating properly. Cycle boiler several times by
raising and lowering operating temperature on the temperature controller.
b) Make sure installation complies with all applicable codes.
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