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2.6.3. Water Fill / Drainage From The Circuit
In order to achieve an efficient operation or to uncommission the system, it should be known how
to fill or drane water from the water circuit.
The maximum water pressure level can be 6 bars in the installation for aiM 85, 115, and
150. The standard equipment of your product due to first unpacking is a 6 bar purge valve.
The maximum water pressure level can be 4,5 bar in the installation for aiM 65. The
standard equipment of your product due to first unpacking is a 4,5 bar purge valve.
The water pressure should be between 1 to 1,5 bars in cold conditions. The system water
pressure should be risen up if the value drops below this range.
ready for using and no plug like similar connections or equipment should be connected.
2.6.4. Hardness and Conductivity of Water, Fur Layer
The heating circuitry should be well cleaned before first fill up. In the first fill up, only use drinking water.
If the water supplied to the system does not carry the mentioned properties, additionaly a
refinement system should also be installed.
Only use drinking water when refilling up the water circuit for any reason.
circulating cycle whilst a steady flow regyme is reached.
If an Aluminum component is being used in the circuit (i.e. Aluminum radiators) the level should be
pH < 8,5.
The maximum allowed hardness (MAH) values for the water to be used in the heating circuit is
designated with reference to VDI 2035 and must be in the range 5 Fr < MAH < 15 Fr.
The maximum total hardness and corresponding maximum conductivity is related to the boiler
capacity and the total volume of the circuitry installation.
2.7.
Over
It is not preferred that the temperature difference between the inflow water and the outflow water may
exceed a certain limit. The main reason is to protect the heat exchanger of your device from thermal over-
stresses. This function may lowe
system minimum value or due to design and safety purposes, it could take the boiler to start prevention
mode (lockout).
Rev: RINNAI Service manual (English)
Date:14/05/2019
Settled Total System Power (kW)
<600
>600
Hardness
5 - 15
0,5 1,5
5 7
0,5 - 0,7
30
the first
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