System Filling And Emptying; Filling; Emptying - Riello Steel Pro Power 114-2 P Installation, Technical Assistance Service And System Management Manual

− that the system be always at a pressure higher than the
atmospheric one at any point (including the pump suc-
tion side) and under any operating conditions (all seals
and hydraulic couplings in a system are designed to
withstand pressure towards the outside, but not under-
pressure);
− the installation be not made with gas-permeable mate-
rials (e.g. plastic pipes without oxygen barrier for under-
floor heating systems)
9
Damages suffered by the thermal module, caused by en-
crustations and corrosion, are not covered by warranty. In
addition, the non compliance of the water requirements
listed in this chapter will void the appliance warranty itself.

2.11 System filling and emptying

The thermal module Steel Pro Power must be provided with a
charging system to be connected to the appliance's return line.
Before filling or emptying the system, switch the system's mas-
ter switch to the OFF position and the thermal module's master
switch to (0).
2.11.1

Filling

− Make sure that drain cocks (1) are closed before you start
loading the system
− Unscrew the vent valve's release cap
− Open the shut-off cocks in order to slowly fill the system
− Use the pressure gauge to check that the pressure is rising
and the water is exiting through the vent valves
− Close the shut-off cocks after the pressure reaches 1.5 bar
1
− Start the system pumps and the thermal module's pump
as shown in Paragraph "Commissioning and mainte-
nance"
− During this stage, check that the air is correctly eliminat-
ed
− Restore the pressure if necessary
− Switch the pumps off and on again
− Repeat the last three steps until the pressure is stabilised
9
The system must be filled up slowly the first time; once it is
filled and the air expelled it should never need to be topped
up again.
9
Systems should also be operated at maximum working
temperature the first time they are started up, in order to
facilitate de-aeration. (Gas is not released from the water at
low temperatures).
9
An automatic spurge can be performed during the first igni-
tion. The parameter that set the cycle is Par. 139. See param-
eter table for more information.
2.11.2

Emptying

Before starting to empty the appliance and the storage cylinder:
− Switch the system's master switch to the OFF position and
the thermal module's master switch to (0).
− Close the water supply shut-off cocks;
− To empty the appliance, connect a rubber hose (2) (Øint
internal diameter = 12mm) to the drainage hose connec-
tor of each unit (1).
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INSTALLATION
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