Rinnai E85SRN Installation & Servicing Instructions Manual page 51

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NOTICE
Water pressure is too low (<10 PSI), FILL
indication remains continuously visible,
the boiler is taken out of operation. The
installation needs to be topped off.
13 If A XX appears on the display, wait for 17 minutes;
14 Check the water pressure and if necessary top it up to 16 to 18 PSI
15 Close the filling loop;
16 Press the 'STEP'-button;
17 Be sure that the filling loop is closed.
18 After the automatic de-aeration program (A XX) is finished the boiler will return to
the Good state or Technical read out.
Check the water pressure regularly and top off the installation when necessary.
The working pressure of the installation should be between 16 and 18 PSI when the
system is cold.
It can take a while before all air has disappeared from a filled installation.
Especially in the first week noises may be heard which indicate the presence
of air. The automatic air vent in the boiler will remove this air, which means the
water pressure can reduce during this period and therefore topping off with
water will have to be done.
During normal use the following messages can occur with the necessary follow up:
Water pressure is too low (<12 PSI),
flashing FILL will alternate with indication
of water pressure, boiler power of 50%
is possible. The installation needs to be
topped off.
Water pressure is too high (>42 PSI),
if HIGH indication remains continuously
visible, the boiler is taken out of operation.
The installation pressure needs to be
decreased by draining water.
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