Hot Water Supply - Rinnai E50C Instructions D'installation Et D'entretien

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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.

9.3 Hot water supply

48
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 fi lling loop;
16 Press the 'STEP'-button;
17 Be sure that the fi lling loop is closed.
18 After the automatic de-aeration program (A XX) is fi nished 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 fi lled installation.
Especially in the fi rst 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.
Apply the water pipe pressure to the DHW fascility (open main valve and/or stop
valve of the safety group).
Vent the DHW fascility and the hot water installation by opening a hot water shut off
valve. Leave the shut off valve open for as long as required until all air has disappeared
from the DHW fascility and the pipes and only water is fl owing from the shut off valve.
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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