FOUR WINDS INTERNATIONAL 2007 Presidio, Owner'S Manual

Page: 143 / 173

PRESIDIO
Never alter the positioning of the regulator. Propane gas regulators must always be
installed with the diaphragm vent facing downward. Also make sure to keep the
regulator cover in place to minimize vent blockage which could result in excessive
gas pressure causing fire or explosion. Do not rely upon being able to smell propane gas
leaks, as the odor may not be sufficiently strong enough to detect.
The regulator reduces the pressure of the propane gas vapor from the pressure in the tank, to
the pressure required for use at the appliances. This reduction in pressure is performed by a
two-stage regulator. Two regulators are used in the same body to reduce the pressure of the
propane gas in the tank for use by the appliances in the motorhome. The regulator seldom
requires service, but it should always be protected from the elements and extremes of hot and
cold.
The high pressure regulator (first stage) is used to reduce the pressure to approximately 10 to
13 PSI before sending it along to the low pressure regulator (second stage). This second stage
regulator reduces the pressure further to 11 inches water column, or 6.35 ounces per square
inch. The two stages regulator does not have to work as hard since the second stage receives
consistent pressure rather than inlet pressure which varies. The result is an efficient safer
system that helps to eliminate problems such as freeze up and pilot outage.
The regulator has been preset by the manufacturer of the regulator, and adjustment should not
be necessary. If adjustment should be required however, DO NOT attempt to adjust it yourself.
Adjustment must be made with special equipment by a qualified propane gas service
technician. Have the regulator checked annually, or whenever you suspect a problem.
The correct line pressure should be 6 ¼ oz. or 11 inches of water column.
Because air is required for proper operation of the regulator, it is very important that the
regulator vent is kept clean and free of dirt and debris. This is why it is necessary to keep the
vent facing downward and the regulator covered to protect if from contamination. A toothbrush
can be used to clean the vent if it becomes clogged by foreign matter.
11-3
PROPANE GAS SYSTEMS
PROPANE GAS REGULATOR