Grand Design Imagine, Owner'S Manual

Page: 107 / 180

105
Propane Systems
pressure to 10-13 lbs. The second stage reduces the 10-13
lbs. of pressure further to an operating pressure of 11” W.C.
(water column) or 6.35 oz. of outlet pressure to your applianc-
es.
The second stage is adjustable and will need to be adjusted
by your dealer or qualified propane service technician for op-
timum performance (this adjustment should always be made
with a properly calibrated manometer). If the pressure is too
high, it affects performance and safety; if the pressure is too
low, your appliances will not operate correctly.
If your RV is equipped with the “automatic” two-stage reg-
ulator, with both cylinders full of propane, turn the lever on
the regulator towards the cylinder you wish to use first. This
will now be the “supply” cylinder and the other the “reserve.”
Slowly open both cylinder valves. The indicator on top of the
regulator will change to green. When the cylinder becomes
empty, the indicator will change to a red. Now turn the regu-
lator lever to the side of the “reserve” cylinder and the green
signal should return. You may now remove the empty cylinder
to have it refilled without interrupting the flow from the full
bottle. After filling the cylinder, connect the pigtail hose and
slowly open the bottle valve.
PROPANE SYSTEM HOSES, TUBES, PIPES & FITTINGS
The hoses, pipes, tubes and fittings used in your propane
system are designed to withstand pressures exceeding those
of the propane system. However, because environment and
time can both contribute to the deterioration of these compo-
nents, they must be inspected for wear at regular intervals.
Be sure to inspect the hose before each season and when
having the tank refilled. Look for signs of deterioration such as
cracks or loss of flexibility. When replacing the hose or other
propane components, always replace them with components
of the same type and rating (check with your dealer).
Fittings are used to connect the various system components
to each other. The P.O.L. fitting at the end of the propane
supply hose is made of brass so that pipe sealants are
not necessary to prevent leaking. It also has a left-handed
thread, which means that it is turned clockwise to remove,
and counter-clockwise to tighten. The P.O.L. fitting has been
designed to help restrict the flow of LP gas in the event of a
regulator failure or hose malfunction.