Emptying - Riello Condexa PRO NA 75P Installation, Operation And Service Manual

INSTALLATION
− Unscrew the air vents release cap
− Open the shut-off cocks in order to slowly fill the system
− Use a pressure gauge to check that the pressure is rising
and the water is exiting through the air vents
− Close the shut-off cocks after the pressure reaches 21.75 psi
(1.5 bar)
− Start the system pumps and the boiler's pump as shown in
section "Commissioning and maintenance"
− During this stage, check that the air is correctly eliminated
− Restore the pressure if necessary
− Switch the pumps off and on again
− Repeat the last three steps until the pressure has stabilized.
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NOTE: The system must be filled up slowly the first time; once
it is filled and the air is expelled it should never need to be
topped up again.
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NOTE: Systems should also be operated at maximum working
temperature the first time they are started up, in order to fa-
cilitate de-aeration. (Gas is not released from the water at low
temperatures).
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NOTE: An automatic air purge can be performed during the
first ignition. The parameter that sets the air purge cycle is Par.
139. See section "Parameters' list" for more information.

2.14.2 Emptying

Before starting to empty the appliance and the storage cylinder:
− Switch the system's master switch to the OFF position and
the boiler's master switch to (0).
− Close the water supply shut-off cocks;
− In order to empty the appliance, fit a rubber hose (2) (inner
diameter int. Ø = 1/2" (13mm)) to the boiler's drain valve (1).
1
2
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