Heating System Filling - Rinnai Mirai 24 Installation And User Manual

HEATING SYSTEM FILLING

Once the boiler is connected open the water supply valve located at the bottom part of the casing and proceed
with the filling of the CH system (pag.11).
ATTENTION: the filling procedure must be performed slowly. This is reducing the air bubbles into
the CH system and reduces the venting process time necessary to wait before to operate the
boiler.
ATTENTION: prior to use the boiler make sure that the installation is properly filled with water
and that the pressure gauge on the front panel shows a value within the green sector (0.5÷1.5
bar). Otherwise fill the system using the water supply valve at the bottom part of the casing.
The venting valve is built-in into the circulation pump. Make sure
that the cap is open.
Open the venting valves on the heating system to purge the air
until only water flows out.
ATTENTION: when plugging in the boiler an automatic
venting program is always activated. It lasts 60 to 120
minutes and it stops automatically. During this process
some safety tests are also performed. It is recommended
not to push any button on the remote controller (some
symbols can appear and/or disappear on the display).
During the venting program the water pressure in the CH system
can fall below the minimum recommended value: restore the
appropriate pressure using the water supply valve.
In the case of some air bubbles remain into the CH system, it is
recommended to unplug and re-plug the boiler to repeat the
venting program.
During the initial use of the boiler it is recommended to check the
pressure gauge on the front panel to ensure a correct pressure of
the CH system.
If necessary, refill the system and restore a correct water
pressure.
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INSTALLATION
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